summaryrefslogtreecommitdiffstats
path: root/debian/patches/import-http2-module-from-2.4.46.patch
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-25 04:41:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-25 04:41:28 +0000
commit2eeb62e38ae17a3523ad3cd81c3de9f20f9e7742 (patch)
treefe91033d4712f6d836006b998525656b9dd193b8 /debian/patches/import-http2-module-from-2.4.46.patch
parentMerging upstream version 2.4.59. (diff)
downloadapache2-debian/2.4.59-1_deb10u1.tar.xz
apache2-debian/2.4.59-1_deb10u1.zip
Adding debian version 2.4.59-1~deb10u1.debian/2.4.59-1_deb10u1debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches/import-http2-module-from-2.4.46.patch')
-rw-r--r--debian/patches/import-http2-module-from-2.4.46.patch7588
1 files changed, 0 insertions, 7588 deletions
diff --git a/debian/patches/import-http2-module-from-2.4.46.patch b/debian/patches/import-http2-module-from-2.4.46.patch
deleted file mode 100644
index cdca37d..0000000
--- a/debian/patches/import-http2-module-from-2.4.46.patch
+++ /dev/null
@@ -1,7588 +0,0 @@
-Description: import http2 module from 2.4.41
- There are too many changes in http2 module to distiguish CVE-2019-9517,
- CVE-2019-10082 and CVE-2019-10081 changes.
-Author: Apache authors
-Bug: https://security-tracker.debian.org/tracker/CVE-2019-9517
- https://security-tracker.debian.org/tracker/CVE-2019-10082
- https://security-tracker.debian.org/tracker/CVE-2019-10081
- https://security-tracker.debian.org/tracker/CVE-2020-9490
- https://security-tracker.debian.org/tracker/CVE-2020-11993
-Forwarded: not-needed
-Reviewed-By: Xavier Guimard <yadd@debian.org>
-Last-Update: 2020-08-25
-
---- a/modules/http2/config2.m4
-+++ b/modules/http2/config2.m4
-@@ -31,7 +31,6 @@
- h2_h2.lo dnl
- h2_headers.lo dnl
- h2_mplx.lo dnl
--h2_ngn_shed.lo dnl
- h2_push.lo dnl
- h2_request.lo dnl
- h2_session.lo dnl
---- a/modules/http2/h2.h
-+++ b/modules/http2/h2.h
-@@ -48,12 +48,12 @@
- #define H2_HEADER_PATH_LEN 5
- #define H2_CRLF "\r\n"
-
--/* Max data size to write so it fits inside a TLS record */
--#define H2_DATA_CHUNK_SIZE ((16*1024) - 100 - 9)
--
- /* Size of the frame header itself in HTTP/2 */
- #define H2_FRAME_HDR_LEN 9
-
-+/* Max data size to write so it fits inside a TLS record */
-+#define H2_DATA_CHUNK_SIZE ((16*1024) - 100 - H2_FRAME_HDR_LEN)
-+
- /* Maximum number of padding bytes in a frame, rfc7540 */
- #define H2_MAX_PADLEN 256
- /* Initial default window size, RFC 7540 ch. 6.5.2 */
-@@ -138,7 +138,7 @@
- apr_table_t *headers;
-
- apr_time_t request_time;
-- unsigned int chunked : 1; /* iff requst body needs to be forwarded as chunked */
-+ unsigned int chunked : 1; /* iff request body needs to be forwarded as chunked */
- unsigned int serialize : 1; /* iff this request is written in HTTP/1.1 serialization */
- apr_off_t raw_bytes; /* RAW network bytes that generated this request - if known. */
- };
-@@ -162,5 +162,6 @@
- #define H2_FILTER_DEBUG_NOTE "http2-debug"
- #define H2_HDR_CONFORMANCE "http2-hdr-conformance"
- #define H2_HDR_CONFORMANCE_UNSAFE "unsafe"
-+#define H2_PUSH_MODE_NOTE "http2-push-mode"
-
- #endif /* defined(__mod_h2__h2__) */
---- a/modules/http2/h2_alt_svc.c
-+++ b/modules/http2/h2_alt_svc.c
-@@ -75,7 +75,7 @@
-
- static int h2_alt_svc_handler(request_rec *r)
- {
-- const h2_config *cfg;
-+ apr_array_header_t *alt_svcs;
- int i;
-
- if (r->connection->keepalives > 0) {
-@@ -87,8 +87,8 @@
- return DECLINED;
- }
-
-- cfg = h2_config_sget(r->server);
-- if (r->hostname && cfg && cfg->alt_svcs && cfg->alt_svcs->nelts > 0) {
-+ alt_svcs = h2_config_alt_svcs(r);
-+ if (r->hostname && alt_svcs && alt_svcs->nelts > 0) {
- const char *alt_svc_used = apr_table_get(r->headers_in, "Alt-Svc-Used");
- if (!alt_svc_used) {
- /* We have alt-svcs defined and client is not already using
-@@ -99,7 +99,7 @@
- const char *alt_svc = "";
- const char *svc_ma = "";
- int secure = h2_h2_is_tls(r->connection);
-- int ma = h2_config_geti(cfg, H2_CONF_ALT_SVC_MAX_AGE);
-+ int ma = h2_config_rgeti(r, H2_CONF_ALT_SVC_MAX_AGE);
- if (ma >= 0) {
- svc_ma = apr_psprintf(r->pool, "; ma=%d", ma);
- }
-@@ -107,8 +107,8 @@
- "h2_alt_svc: announce %s for %s:%d",
- (secure? "secure" : "insecure"),
- r->hostname, (int)r->server->port);
-- for (i = 0; i < cfg->alt_svcs->nelts; ++i) {
-- h2_alt_svc *as = h2_alt_svc_IDX(cfg->alt_svcs, i);
-+ for (i = 0; i < alt_svcs->nelts; ++i) {
-+ h2_alt_svc *as = h2_alt_svc_IDX(alt_svcs, i);
- const char *ahost = as->host;
- if (ahost && !apr_strnatcasecmp(ahost, r->hostname)) {
- ahost = NULL;
---- a/modules/http2/h2_bucket_beam.c
-+++ b/modules/http2/h2_bucket_beam.c
-@@ -196,7 +196,7 @@
- * bucket beam that can transport buckets across threads
- ******************************************************************************/
-
--static void mutex_leave(void *ctx, apr_thread_mutex_t *lock)
-+static void mutex_leave(apr_thread_mutex_t *lock)
- {
- apr_thread_mutex_unlock(lock);
- }
-@@ -217,7 +217,7 @@
- static void leave_yellow(h2_bucket_beam *beam, h2_beam_lock *pbl)
- {
- if (pbl->leave) {
-- pbl->leave(pbl->leave_ctx, pbl->mutex);
-+ pbl->leave(pbl->mutex);
- }
- }
-
---- a/modules/http2/h2_bucket_beam.h
-+++ b/modules/http2/h2_bucket_beam.h
-@@ -126,12 +126,11 @@
- * buffers until the transmission is complete. Star gates use a similar trick.
- */
-
--typedef void h2_beam_mutex_leave(void *ctx, struct apr_thread_mutex_t *lock);
-+typedef void h2_beam_mutex_leave(struct apr_thread_mutex_t *lock);
-
- typedef struct {
- apr_thread_mutex_t *mutex;
- h2_beam_mutex_leave *leave;
-- void *leave_ctx;
- } h2_beam_lock;
-
- typedef struct h2_bucket_beam h2_bucket_beam;
---- a/modules/http2/h2_config.c
-+++ b/modules/http2/h2_config.c
-@@ -42,6 +42,55 @@
- #define H2_CONFIG_GET(a, b, n) \
- (((a)->n == DEF_VAL)? (b) : (a))->n
-
-+#define H2_CONFIG_SET(a, n, v) \
-+ ((a)->n = v)
-+
-+#define CONFIG_CMD_SET(cmd,dir,var,val) \
-+ h2_config_seti(((cmd)->path? (dir) : NULL), h2_config_sget((cmd)->server), var, val)
-+
-+#define CONFIG_CMD_SET64(cmd,dir,var,val) \
-+ h2_config_seti64(((cmd)->path? (dir) : NULL), h2_config_sget((cmd)->server), var, val)
-+
-+/* Apache httpd module configuration for h2. */
-+typedef struct h2_config {
-+ const char *name;
-+ int h2_max_streams; /* max concurrent # streams (http2) */
-+ int h2_window_size; /* stream window size (http2) */
-+ int min_workers; /* min # of worker threads/child */
-+ int max_workers; /* max # of worker threads/child */
-+ int max_worker_idle_secs; /* max # of idle seconds for worker */
-+ int stream_max_mem_size; /* max # bytes held in memory/stream */
-+ apr_array_header_t *alt_svcs; /* h2_alt_svc specs for this server */
-+ int alt_svc_max_age; /* seconds clients can rely on alt-svc info*/
-+ int serialize_headers; /* Use serialized HTTP/1.1 headers for
-+ processing, better compatibility */
-+ int h2_direct; /* if mod_h2 is active directly */
-+ int modern_tls_only; /* Accept only modern TLS in HTTP/2 connections */
-+ int h2_upgrade; /* Allow HTTP/1 upgrade to h2/h2c */
-+ apr_int64_t tls_warmup_size; /* Amount of TLS data to send before going full write size */
-+ int tls_cooldown_secs; /* Seconds of idle time before going back to small TLS records */
-+ int h2_push; /* if HTTP/2 server push is enabled */
-+ struct apr_hash_t *priorities;/* map of content-type to h2_priority records */
-+
-+ int push_diary_size; /* # of entries in push diary */
-+ int copy_files; /* if files shall be copied vs setaside on output */
-+ apr_array_header_t *push_list;/* list of h2_push_res configurations */
-+ int early_hints; /* support status code 103 */
-+ int padding_bits;
-+ int padding_always;
-+} h2_config;
-+
-+typedef struct h2_dir_config {
-+ const char *name;
-+ apr_array_header_t *alt_svcs; /* h2_alt_svc specs for this server */
-+ int alt_svc_max_age; /* seconds clients can rely on alt-svc info*/
-+ int h2_upgrade; /* Allow HTTP/1 upgrade to h2/h2c */
-+ int h2_push; /* if HTTP/2 server push is enabled */
-+ apr_array_header_t *push_list;/* list of h2_push_res configurations */
-+ int early_hints; /* support status code 103 */
-+} h2_dir_config;
-+
-+
- static h2_config defconf = {
- "default",
- 100, /* max_streams */
-@@ -64,6 +113,18 @@
- 0, /* copy files across threads */
- NULL, /* push list */
- 0, /* early hints, http status 103 */
-+ 0, /* padding bits */
-+ 1, /* padding always */
-+};
-+
-+static h2_dir_config defdconf = {
-+ "default",
-+ NULL, /* no alt-svcs */
-+ -1, /* alt-svc max age */
-+ -1, /* HTTP/1 Upgrade support */
-+ -1, /* HTTP/2 server push enabled */
-+ NULL, /* push list */
-+ -1, /* early hints, http status 103 */
- };
-
- void h2_config_init(apr_pool_t *pool)
-@@ -71,12 +132,10 @@
- (void)pool;
- }
-
--static void *h2_config_create(apr_pool_t *pool,
-- const char *prefix, const char *x)
-+void *h2_config_create_svr(apr_pool_t *pool, server_rec *s)
- {
- h2_config *conf = (h2_config *)apr_pcalloc(pool, sizeof(h2_config));
-- const char *s = x? x : "unknown";
-- char *name = apr_pstrcat(pool, prefix, "[", s, "]", NULL);
-+ char *name = apr_pstrcat(pool, "srv[", s->defn_name, "]", NULL);
-
- conf->name = name;
- conf->h2_max_streams = DEF_VAL;
-@@ -98,19 +157,11 @@
- conf->copy_files = DEF_VAL;
- conf->push_list = NULL;
- conf->early_hints = DEF_VAL;
-+ conf->padding_bits = DEF_VAL;
-+ conf->padding_always = DEF_VAL;
- return conf;
- }
-
--void *h2_config_create_svr(apr_pool_t *pool, server_rec *s)
--{
-- return h2_config_create(pool, "srv", s->defn_name);
--}
--
--void *h2_config_create_dir(apr_pool_t *pool, char *x)
--{
-- return h2_config_create(pool, "dir", x);
--}
--
- static void *h2_config_merge(apr_pool_t *pool, void *basev, void *addv)
- {
- h2_config *base = (h2_config *)basev;
-@@ -149,25 +200,52 @@
- n->push_list = add->push_list? add->push_list : base->push_list;
- }
- n->early_hints = H2_CONFIG_GET(add, base, early_hints);
-+ n->padding_bits = H2_CONFIG_GET(add, base, padding_bits);
-+ n->padding_always = H2_CONFIG_GET(add, base, padding_always);
- return n;
- }
-
--void *h2_config_merge_dir(apr_pool_t *pool, void *basev, void *addv)
-+void *h2_config_merge_svr(apr_pool_t *pool, void *basev, void *addv)
- {
- return h2_config_merge(pool, basev, addv);
- }
-
--void *h2_config_merge_svr(apr_pool_t *pool, void *basev, void *addv)
-+void *h2_config_create_dir(apr_pool_t *pool, char *x)
- {
-- return h2_config_merge(pool, basev, addv);
-+ h2_dir_config *conf = (h2_dir_config *)apr_pcalloc(pool, sizeof(h2_dir_config));
-+ const char *s = x? x : "unknown";
-+ char *name = apr_pstrcat(pool, "dir[", s, "]", NULL);
-+
-+ conf->name = name;
-+ conf->alt_svc_max_age = DEF_VAL;
-+ conf->h2_upgrade = DEF_VAL;
-+ conf->h2_push = DEF_VAL;
-+ conf->early_hints = DEF_VAL;
-+ return conf;
- }
-
--int h2_config_geti(const h2_config *conf, h2_config_var_t var)
-+void *h2_config_merge_dir(apr_pool_t *pool, void *basev, void *addv)
- {
-- return (int)h2_config_geti64(conf, var);
-+ h2_dir_config *base = (h2_dir_config *)basev;
-+ h2_dir_config *add = (h2_dir_config *)addv;
-+ h2_dir_config *n = (h2_dir_config *)apr_pcalloc(pool, sizeof(h2_dir_config));
-+
-+ n->name = apr_pstrcat(pool, "merged[", add->name, ", ", base->name, "]", NULL);
-+ n->alt_svcs = add->alt_svcs? add->alt_svcs : base->alt_svcs;
-+ n->alt_svc_max_age = H2_CONFIG_GET(add, base, alt_svc_max_age);
-+ n->h2_upgrade = H2_CONFIG_GET(add, base, h2_upgrade);
-+ n->h2_push = H2_CONFIG_GET(add, base, h2_push);
-+ if (add->push_list && base->push_list) {
-+ n->push_list = apr_array_append(pool, base->push_list, add->push_list);
-+ }
-+ else {
-+ n->push_list = add->push_list? add->push_list : base->push_list;
-+ }
-+ n->early_hints = H2_CONFIG_GET(add, base, early_hints);
-+ return n;
- }
-
--apr_int64_t h2_config_geti64(const h2_config *conf, h2_config_var_t var)
-+static apr_int64_t h2_srv_config_geti64(const h2_config *conf, h2_config_var_t var)
- {
- switch(var) {
- case H2_CONF_MAX_STREAMS:
-@@ -204,12 +282,93 @@
- return H2_CONFIG_GET(conf, &defconf, copy_files);
- case H2_CONF_EARLY_HINTS:
- return H2_CONFIG_GET(conf, &defconf, early_hints);
-+ case H2_CONF_PADDING_BITS:
-+ return H2_CONFIG_GET(conf, &defconf, padding_bits);
-+ case H2_CONF_PADDING_ALWAYS:
-+ return H2_CONFIG_GET(conf, &defconf, padding_always);
- default:
- return DEF_VAL;
- }
- }
-
--const h2_config *h2_config_sget(server_rec *s)
-+static void h2_srv_config_seti(h2_config *conf, h2_config_var_t var, int val)
-+{
-+ switch(var) {
-+ case H2_CONF_MAX_STREAMS:
-+ H2_CONFIG_SET(conf, h2_max_streams, val);
-+ break;
-+ case H2_CONF_WIN_SIZE:
-+ H2_CONFIG_SET(conf, h2_window_size, val);
-+ break;
-+ case H2_CONF_MIN_WORKERS:
-+ H2_CONFIG_SET(conf, min_workers, val);
-+ break;
-+ case H2_CONF_MAX_WORKERS:
-+ H2_CONFIG_SET(conf, max_workers, val);
-+ break;
-+ case H2_CONF_MAX_WORKER_IDLE_SECS:
-+ H2_CONFIG_SET(conf, max_worker_idle_secs, val);
-+ break;
-+ case H2_CONF_STREAM_MAX_MEM:
-+ H2_CONFIG_SET(conf, stream_max_mem_size, val);
-+ break;
-+ case H2_CONF_ALT_SVC_MAX_AGE:
-+ H2_CONFIG_SET(conf, alt_svc_max_age, val);
-+ break;
-+ case H2_CONF_SER_HEADERS:
-+ H2_CONFIG_SET(conf, serialize_headers, val);
-+ break;
-+ case H2_CONF_MODERN_TLS_ONLY:
-+ H2_CONFIG_SET(conf, modern_tls_only, val);
-+ break;
-+ case H2_CONF_UPGRADE:
-+ H2_CONFIG_SET(conf, h2_upgrade, val);
-+ break;
-+ case H2_CONF_DIRECT:
-+ H2_CONFIG_SET(conf, h2_direct, val);
-+ break;
-+ case H2_CONF_TLS_WARMUP_SIZE:
-+ H2_CONFIG_SET(conf, tls_warmup_size, val);
-+ break;
-+ case H2_CONF_TLS_COOLDOWN_SECS:
-+ H2_CONFIG_SET(conf, tls_cooldown_secs, val);
-+ break;
-+ case H2_CONF_PUSH:
-+ H2_CONFIG_SET(conf, h2_push, val);
-+ break;
-+ case H2_CONF_PUSH_DIARY_SIZE:
-+ H2_CONFIG_SET(conf, push_diary_size, val);
-+ break;
-+ case H2_CONF_COPY_FILES:
-+ H2_CONFIG_SET(conf, copy_files, val);
-+ break;
-+ case H2_CONF_EARLY_HINTS:
-+ H2_CONFIG_SET(conf, early_hints, val);
-+ break;
-+ case H2_CONF_PADDING_BITS:
-+ H2_CONFIG_SET(conf, padding_bits, val);
-+ break;
-+ case H2_CONF_PADDING_ALWAYS:
-+ H2_CONFIG_SET(conf, padding_always, val);
-+ break;
-+ default:
-+ break;
-+ }
-+}
-+
-+static void h2_srv_config_seti64(h2_config *conf, h2_config_var_t var, apr_int64_t val)
-+{
-+ switch(var) {
-+ case H2_CONF_TLS_WARMUP_SIZE:
-+ H2_CONFIG_SET(conf, tls_warmup_size, val);
-+ break;
-+ default:
-+ h2_srv_config_seti(conf, var, (int)val);
-+ break;
-+ }
-+}
-+
-+static h2_config *h2_config_sget(server_rec *s)
- {
- h2_config *cfg = (h2_config *)ap_get_module_config(s->module_config,
- &http2_module);
-@@ -217,9 +376,162 @@
- return cfg;
- }
-
--const struct h2_priority *h2_config_get_priority(const h2_config *conf,
-- const char *content_type)
-+static const h2_dir_config *h2_config_rget(request_rec *r)
-+{
-+ h2_dir_config *cfg = (h2_dir_config *)ap_get_module_config(r->per_dir_config,
-+ &http2_module);
-+ ap_assert(cfg);
-+ return cfg;
-+}
-+
-+static apr_int64_t h2_dir_config_geti64(const h2_dir_config *conf, h2_config_var_t var)
-+{
-+ switch(var) {
-+ case H2_CONF_ALT_SVC_MAX_AGE:
-+ return H2_CONFIG_GET(conf, &defdconf, alt_svc_max_age);
-+ case H2_CONF_UPGRADE:
-+ return H2_CONFIG_GET(conf, &defdconf, h2_upgrade);
-+ case H2_CONF_PUSH:
-+ return H2_CONFIG_GET(conf, &defdconf, h2_push);
-+ case H2_CONF_EARLY_HINTS:
-+ return H2_CONFIG_GET(conf, &defdconf, early_hints);
-+
-+ default:
-+ return DEF_VAL;
-+ }
-+}
-+
-+static void h2_config_seti(h2_dir_config *dconf, h2_config *conf, h2_config_var_t var, int val)
-+{
-+ int set_srv = !dconf;
-+ if (dconf) {
-+ switch(var) {
-+ case H2_CONF_ALT_SVC_MAX_AGE:
-+ H2_CONFIG_SET(dconf, alt_svc_max_age, val);
-+ break;
-+ case H2_CONF_UPGRADE:
-+ H2_CONFIG_SET(dconf, h2_upgrade, val);
-+ break;
-+ case H2_CONF_PUSH:
-+ H2_CONFIG_SET(dconf, h2_push, val);
-+ break;
-+ case H2_CONF_EARLY_HINTS:
-+ H2_CONFIG_SET(dconf, early_hints, val);
-+ break;
-+ default:
-+ /* not handled in dir_conf */
-+ set_srv = 1;
-+ break;
-+ }
-+ }
-+
-+ if (set_srv) {
-+ h2_srv_config_seti(conf, var, val);
-+ }
-+}
-+
-+static void h2_config_seti64(h2_dir_config *dconf, h2_config *conf, h2_config_var_t var, apr_int64_t val)
- {
-+ int set_srv = !dconf;
-+ if (dconf) {
-+ switch(var) {
-+ default:
-+ /* not handled in dir_conf */
-+ set_srv = 1;
-+ break;
-+ }
-+ }
-+
-+ if (set_srv) {
-+ h2_srv_config_seti64(conf, var, val);
-+ }
-+}
-+
-+static const h2_config *h2_config_get(conn_rec *c)
-+{
-+ h2_ctx *ctx = h2_ctx_get(c, 0);
-+
-+ if (ctx) {
-+ if (ctx->config) {
-+ return ctx->config;
-+ }
-+ else if (ctx->server) {
-+ ctx->config = h2_config_sget(ctx->server);
-+ return ctx->config;
-+ }
-+ }
-+
-+ return h2_config_sget(c->base_server);
-+}
-+
-+int h2_config_cgeti(conn_rec *c, h2_config_var_t var)
-+{
-+ return (int)h2_srv_config_geti64(h2_config_get(c), var);
-+}
-+
-+apr_int64_t h2_config_cgeti64(conn_rec *c, h2_config_var_t var)
-+{
-+ return h2_srv_config_geti64(h2_config_get(c), var);
-+}
-+
-+int h2_config_sgeti(server_rec *s, h2_config_var_t var)
-+{
-+ return (int)h2_srv_config_geti64(h2_config_sget(s), var);
-+}
-+
-+apr_int64_t h2_config_sgeti64(server_rec *s, h2_config_var_t var)
-+{
-+ return h2_srv_config_geti64(h2_config_sget(s), var);
-+}
-+
-+int h2_config_geti(request_rec *r, server_rec *s, h2_config_var_t var)
-+{
-+ return (int)h2_config_geti64(r, s, var);
-+}
-+
-+apr_int64_t h2_config_geti64(request_rec *r, server_rec *s, h2_config_var_t var)
-+{
-+ apr_int64_t mode = r? (int)h2_dir_config_geti64(h2_config_rget(r), var) : DEF_VAL;
-+ return (mode != DEF_VAL)? mode : h2_config_sgeti64(s, var);
-+}
-+
-+int h2_config_rgeti(request_rec *r, h2_config_var_t var)
-+{
-+ return h2_config_geti(r, r->server, var);
-+}
-+
-+apr_int64_t h2_config_rgeti64(request_rec *r, h2_config_var_t var)
-+{
-+ return h2_config_geti64(r, r->server, var);
-+}
-+
-+apr_array_header_t *h2_config_push_list(request_rec *r)
-+{
-+ const h2_config *sconf;
-+ const h2_dir_config *conf = h2_config_rget(r);
-+
-+ if (conf && conf->push_list) {
-+ return conf->push_list;
-+ }
-+ sconf = h2_config_sget(r->server);
-+ return sconf? sconf->push_list : NULL;
-+}
-+
-+apr_array_header_t *h2_config_alt_svcs(request_rec *r)
-+{
-+ const h2_config *sconf;
-+ const h2_dir_config *conf = h2_config_rget(r);
-+
-+ if (conf && conf->alt_svcs) {
-+ return conf->alt_svcs;
-+ }
-+ sconf = h2_config_sget(r->server);
-+ return sconf? sconf->alt_svcs : NULL;
-+}
-+
-+const struct h2_priority *h2_cconfig_get_priority(conn_rec *c, const char *content_type)
-+{
-+ const h2_config *conf = h2_config_get(c);
- if (content_type && conf->priorities) {
- size_t len = strcspn(content_type, "; \t");
- h2_priority *prio = apr_hash_get(conf->priorities, content_type, len);
-@@ -228,166 +540,156 @@
- return NULL;
- }
-
--static const char *h2_conf_set_max_streams(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_max_streams(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->h2_max_streams = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->h2_max_streams < 1) {
-+ apr_int64_t ival = (int)apr_atoi64(value);
-+ if (ival < 1) {
- return "value must be > 0";
- }
-+ CONFIG_CMD_SET64(cmd, dirconf, H2_CONF_MAX_STREAMS, ival);
- return NULL;
- }
-
--static const char *h2_conf_set_window_size(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_window_size(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->h2_window_size = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->h2_window_size < 1024) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 1024) {
- return "value must be >= 1024";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_WIN_SIZE, val);
- return NULL;
- }
-
--static const char *h2_conf_set_min_workers(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_min_workers(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->min_workers = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->min_workers < 1) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 1) {
- return "value must be > 0";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_MIN_WORKERS, val);
- return NULL;
- }
-
--static const char *h2_conf_set_max_workers(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_max_workers(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->max_workers = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->max_workers < 1) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 1) {
- return "value must be > 0";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_MAX_WORKERS, val);
- return NULL;
- }
-
--static const char *h2_conf_set_max_worker_idle_secs(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_max_worker_idle_secs(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->max_worker_idle_secs = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->max_worker_idle_secs < 1) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 1) {
- return "value must be > 0";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_MAX_WORKER_IDLE_SECS, val);
- return NULL;
- }
-
--static const char *h2_conf_set_stream_max_mem_size(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_stream_max_mem_size(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
--
--
-- cfg->stream_max_mem_size = (int)apr_atoi64(value);
-- (void)arg;
-- if (cfg->stream_max_mem_size < 1024) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 1024) {
- return "value must be >= 1024";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_STREAM_MAX_MEM, val);
- return NULL;
- }
-
--static const char *h2_add_alt_svc(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_add_alt_svc(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
- if (value && *value) {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- h2_alt_svc *as = h2_alt_svc_parse(value, parms->pool);
-+ h2_alt_svc *as = h2_alt_svc_parse(value, cmd->pool);
- if (!as) {
- return "unable to parse alt-svc specifier";
- }
-- if (!cfg->alt_svcs) {
-- cfg->alt_svcs = apr_array_make(parms->pool, 5, sizeof(h2_alt_svc*));
-+
-+ if (cmd->path) {
-+ h2_dir_config *dcfg = (h2_dir_config *)dirconf;
-+ if (!dcfg->alt_svcs) {
-+ dcfg->alt_svcs = apr_array_make(cmd->pool, 5, sizeof(h2_alt_svc*));
-+ }
-+ APR_ARRAY_PUSH(dcfg->alt_svcs, h2_alt_svc*) = as;
-+ }
-+ else {
-+ h2_config *cfg = (h2_config *)h2_config_sget(cmd->server);
-+ if (!cfg->alt_svcs) {
-+ cfg->alt_svcs = apr_array_make(cmd->pool, 5, sizeof(h2_alt_svc*));
-+ }
-+ APR_ARRAY_PUSH(cfg->alt_svcs, h2_alt_svc*) = as;
- }
-- APR_ARRAY_PUSH(cfg->alt_svcs, h2_alt_svc*) = as;
- }
-- (void)arg;
- return NULL;
- }
-
--static const char *h2_conf_set_alt_svc_max_age(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_alt_svc_max_age(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->alt_svc_max_age = (int)apr_atoi64(value);
-- (void)arg;
-+ int val = (int)apr_atoi64(value);
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_ALT_SVC_MAX_AGE, val);
- return NULL;
- }
-
--static const char *h2_conf_set_session_extra_files(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_session_extra_files(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
- /* deprecated, ignore */
-- (void)arg;
-+ (void)dirconf;
- (void)value;
-- ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, parms->pool, /* NO LOGNO */
-+ ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, cmd->pool, /* NO LOGNO */
- "H2SessionExtraFiles is obsolete and will be ignored");
- return NULL;
- }
-
--static const char *h2_conf_set_serialize_headers(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_serialize_headers(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
- if (!strcasecmp(value, "On")) {
-- cfg->serialize_headers = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_SER_HEADERS, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->serialize_headers = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_SER_HEADERS, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
--static const char *h2_conf_set_direct(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_direct(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
- if (!strcasecmp(value, "On")) {
-- cfg->h2_direct = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_DIRECT, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->h2_direct = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_DIRECT, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
--static const char *h2_conf_set_push(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_push(cmd_parms *cmd, void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
- if (!strcasecmp(value, "On")) {
-- cfg->h2_push = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_PUSH, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->h2_push = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_PUSH, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
-@@ -419,7 +721,7 @@
- else if (!strcasecmp("BEFORE", sdependency)) {
- dependency = H2_DEPENDANT_BEFORE;
- if (sweight) {
-- return "dependency 'Before' does not allow a weight";
-+ return "dependecy 'Before' does not allow a weight";
- }
- }
- else if (!strcasecmp("INTERLEAVED", sdependency)) {
-@@ -447,100 +749,88 @@
- return NULL;
- }
-
--static const char *h2_conf_set_modern_tls_only(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_modern_tls_only(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
- if (!strcasecmp(value, "On")) {
-- cfg->modern_tls_only = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_MODERN_TLS_ONLY, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->modern_tls_only = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_MODERN_TLS_ONLY, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
--static const char *h2_conf_set_upgrade(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_upgrade(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
- if (!strcasecmp(value, "On")) {
-- cfg->h2_upgrade = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_UPGRADE, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->h2_upgrade = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_UPGRADE, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
--static const char *h2_conf_set_tls_warmup_size(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_tls_warmup_size(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->tls_warmup_size = apr_atoi64(value);
-- (void)arg;
-+ apr_int64_t val = apr_atoi64(value);
-+ CONFIG_CMD_SET64(cmd, dirconf, H2_CONF_TLS_WARMUP_SIZE, val);
- return NULL;
- }
-
--static const char *h2_conf_set_tls_cooldown_secs(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_tls_cooldown_secs(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- cfg->tls_cooldown_secs = (int)apr_atoi64(value);
-- (void)arg;
-+ apr_int64_t val = (int)apr_atoi64(value);
-+ CONFIG_CMD_SET64(cmd, dirconf, H2_CONF_TLS_COOLDOWN_SECS, val);
- return NULL;
- }
-
--static const char *h2_conf_set_push_diary_size(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_push_diary_size(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- (void)arg;
-- cfg->push_diary_size = (int)apr_atoi64(value);
-- if (cfg->push_diary_size < 0) {
-+ int val = (int)apr_atoi64(value);
-+ if (val < 0) {
- return "value must be >= 0";
- }
-- if (cfg->push_diary_size > 0 && (cfg->push_diary_size & (cfg->push_diary_size-1))) {
-+ if (val > 0 && (val & (val-1))) {
- return "value must a power of 2";
- }
-- if (cfg->push_diary_size > (1 << 15)) {
-+ if (val > (1 << 15)) {
- return "value must <= 65536";
- }
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_PUSH_DIARY_SIZE, val);
- return NULL;
- }
-
--static const char *h2_conf_set_copy_files(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_copy_files(cmd_parms *cmd,
-+ void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)arg;
- if (!strcasecmp(value, "On")) {
-- cfg->copy_files = 1;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_COPY_FILES, 1);
- return NULL;
- }
- else if (!strcasecmp(value, "Off")) {
-- cfg->copy_files = 0;
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_COPY_FILES, 0);
- return NULL;
- }
--
-- (void)arg;
- return "value must be On or Off";
- }
-
--static void add_push(apr_pool_t *pool, h2_config *conf, h2_push_res *push)
-+static void add_push(apr_array_header_t **plist, apr_pool_t *pool, h2_push_res *push)
- {
- h2_push_res *new;
-- if (!conf->push_list) {
-- conf->push_list = apr_array_make(pool, 10, sizeof(*push));
-+ if (!*plist) {
-+ *plist = apr_array_make(pool, 10, sizeof(*push));
- }
-- new = apr_array_push(conf->push_list);
-+ new = apr_array_push(*plist);
- new->uri_ref = push->uri_ref;
- new->critical = push->critical;
- }
-@@ -549,8 +839,6 @@
- const char *arg1, const char *arg2,
- const char *arg3)
- {
-- h2_config *dconf = (h2_config*)dirconf ;
-- h2_config *sconf = (h2_config*)h2_config_sget(cmd->server);
- h2_push_res push;
- const char *last = arg3;
-
-@@ -575,42 +863,54 @@
- }
- }
-
-- /* server command? set both */
-- if (cmd->path == NULL) {
-- add_push(cmd->pool, sconf, &push);
-- add_push(cmd->pool, dconf, &push);
-+ if (cmd->path) {
-+ add_push(&(((h2_dir_config*)dirconf)->push_list), cmd->pool, &push);
- }
- else {
-- add_push(cmd->pool, dconf, &push);
-+ add_push(&(h2_config_sget(cmd->server)->push_list), cmd->pool, &push);
- }
-+ return NULL;
-+}
-
-+static const char *h2_conf_set_early_hints(cmd_parms *cmd,
-+ void *dirconf, const char *value)
-+{
-+ int val;
-+
-+ if (!strcasecmp(value, "On")) val = 1;
-+ else if (!strcasecmp(value, "Off")) val = 0;
-+ else return "value must be On or Off";
-+
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_EARLY_HINTS, val);
-+ if (cmd->path) {
-+ ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, cmd->pool,
-+ "H2EarlyHints = %d on path %s", val, cmd->path);
-+ }
- return NULL;
- }
-
--static const char *h2_conf_set_early_hints(cmd_parms *parms,
-- void *arg, const char *value)
-+static const char *h2_conf_set_padding(cmd_parms *cmd, void *dirconf, const char *value)
- {
-- h2_config *cfg = (h2_config *)h2_config_sget(parms->server);
-- if (!strcasecmp(value, "On")) {
-- cfg->early_hints = 1;
-- return NULL;
-+ int val;
-+
-+ val = (int)apr_atoi64(value);
-+ if (val < 0) {
-+ return "number of bits must be >= 0";
- }
-- else if (!strcasecmp(value, "Off")) {
-- cfg->early_hints = 0;
-- return NULL;
-+ if (val > 8) {
-+ return "number of bits must be <= 8";
- }
--
-- (void)arg;
-- return "value must be On or Off";
-+ CONFIG_CMD_SET(cmd, dirconf, H2_CONF_PADDING_BITS, val);
-+ return NULL;
- }
-
-+
- void h2_get_num_workers(server_rec *s, int *minw, int *maxw)
- {
- int threads_per_child = 0;
-- const h2_config *config = h2_config_sget(s);
-
-- *minw = h2_config_geti(config, H2_CONF_MIN_WORKERS);
-- *maxw = h2_config_geti(config, H2_CONF_MAX_WORKERS);
-+ *minw = h2_config_sgeti(s, H2_CONF_MIN_WORKERS);
-+ *maxw = h2_config_sgeti(s, H2_CONF_MAX_WORKERS);
- ap_mpm_query(AP_MPMQ_MAX_THREADS, &threads_per_child);
-
- if (*minw <= 0) {
-@@ -652,7 +952,7 @@
- AP_INIT_TAKE1("H2ModernTLSOnly", h2_conf_set_modern_tls_only, NULL,
- RSRC_CONF, "off to not impose RFC 7540 restrictions on TLS"),
- AP_INIT_TAKE1("H2Upgrade", h2_conf_set_upgrade, NULL,
-- RSRC_CONF, "on to allow HTTP/1 Upgrades to h2/h2c"),
-+ RSRC_CONF|OR_AUTHCFG, "on to allow HTTP/1 Upgrades to h2/h2c"),
- AP_INIT_TAKE1("H2Direct", h2_conf_set_direct, NULL,
- RSRC_CONF, "on to enable direct HTTP/2 mode"),
- AP_INIT_TAKE1("H2SessionExtraFiles", h2_conf_set_session_extra_files, NULL,
-@@ -662,7 +962,7 @@
- AP_INIT_TAKE1("H2TLSCoolDownSecs", h2_conf_set_tls_cooldown_secs, NULL,
- RSRC_CONF, "seconds of idle time on TLS before shrinking writes"),
- AP_INIT_TAKE1("H2Push", h2_conf_set_push, NULL,
-- RSRC_CONF, "off to disable HTTP/2 server push"),
-+ RSRC_CONF|OR_AUTHCFG, "off to disable HTTP/2 server push"),
- AP_INIT_TAKE23("H2PushPriority", h2_conf_add_push_priority, NULL,
- RSRC_CONF, "define priority of PUSHed resources per content type"),
- AP_INIT_TAKE1("H2PushDiarySize", h2_conf_set_push_diary_size, NULL,
-@@ -670,33 +970,12 @@
- AP_INIT_TAKE1("H2CopyFiles", h2_conf_set_copy_files, NULL,
- OR_FILEINFO, "on to perform copy of file data"),
- AP_INIT_TAKE123("H2PushResource", h2_conf_add_push_res, NULL,
-- OR_FILEINFO, "add a resource to be pushed in this location/on this server."),
-+ OR_FILEINFO|OR_AUTHCFG, "add a resource to be pushed in this location/on this server."),
- AP_INIT_TAKE1("H2EarlyHints", h2_conf_set_early_hints, NULL,
- RSRC_CONF, "on to enable interim status 103 responses"),
-+ AP_INIT_TAKE1("H2Padding", h2_conf_set_padding, NULL,
-+ RSRC_CONF, "set payload padding"),
- AP_END_CMD
- };
-
-
--const h2_config *h2_config_rget(request_rec *r)
--{
-- h2_config *cfg = (h2_config *)ap_get_module_config(r->per_dir_config,
-- &http2_module);
-- return cfg? cfg : h2_config_sget(r->server);
--}
--
--const h2_config *h2_config_get(conn_rec *c)
--{
-- h2_ctx *ctx = h2_ctx_get(c, 0);
--
-- if (ctx) {
-- if (ctx->config) {
-- return ctx->config;
-- }
-- else if (ctx->server) {
-- ctx->config = h2_config_sget(ctx->server);
-- return ctx->config;
-- }
-- }
--
-- return h2_config_sget(c->base_server);
--}
---- a/modules/http2/h2_config.h
-+++ b/modules/http2/h2_config.h
-@@ -42,6 +42,8 @@
- H2_CONF_PUSH_DIARY_SIZE,
- H2_CONF_COPY_FILES,
- H2_CONF_EARLY_HINTS,
-+ H2_CONF_PADDING_BITS,
-+ H2_CONF_PADDING_ALWAYS,
- } h2_config_var_t;
-
- struct apr_hash_t;
-@@ -53,33 +55,6 @@
- int critical;
- } h2_push_res;
-
--/* Apache httpd module configuration for h2. */
--typedef struct h2_config {
-- const char *name;
-- int h2_max_streams; /* max concurrent # streams (http2) */
-- int h2_window_size; /* stream window size (http2) */
-- int min_workers; /* min # of worker threads/child */
-- int max_workers; /* max # of worker threads/child */
-- int max_worker_idle_secs; /* max # of idle seconds for worker */
-- int stream_max_mem_size; /* max # bytes held in memory/stream */
-- apr_array_header_t *alt_svcs; /* h2_alt_svc specs for this server */
-- int alt_svc_max_age; /* seconds clients can rely on alt-svc info*/
-- int serialize_headers; /* Use serialized HTTP/1.1 headers for
-- processing, better compatibility */
-- int h2_direct; /* if mod_h2 is active directly */
-- int modern_tls_only; /* Accept only modern TLS in HTTP/2 connections */
-- int h2_upgrade; /* Allow HTTP/1 upgrade to h2/h2c */
-- apr_int64_t tls_warmup_size; /* Amount of TLS data to send before going full write size */
-- int tls_cooldown_secs; /* Seconds of idle time before going back to small TLS records */
-- int h2_push; /* if HTTP/2 server push is enabled */
-- struct apr_hash_t *priorities;/* map of content-type to h2_priority records */
--
-- int push_diary_size; /* # of entries in push diary */
-- int copy_files; /* if files shall be copied vs setaside on output */
-- apr_array_header_t *push_list;/* list of h2_push_res configurations */
-- int early_hints; /* support status code 103 */
--} h2_config;
--
-
- void *h2_config_create_dir(apr_pool_t *pool, char *x);
- void *h2_config_merge_dir(apr_pool_t *pool, void *basev, void *addv);
-@@ -88,19 +63,37 @@
-
- extern const command_rec h2_cmds[];
-
--const h2_config *h2_config_get(conn_rec *c);
--const h2_config *h2_config_sget(server_rec *s);
--const h2_config *h2_config_rget(request_rec *r);
-+int h2_config_geti(request_rec *r, server_rec *s, h2_config_var_t var);
-+apr_int64_t h2_config_geti64(request_rec *r, server_rec *s, h2_config_var_t var);
-
--int h2_config_geti(const h2_config *conf, h2_config_var_t var);
--apr_int64_t h2_config_geti64(const h2_config *conf, h2_config_var_t var);
-+/**
-+ * Get the configured value for variable <var> at the given connection.
-+ */
-+int h2_config_cgeti(conn_rec *c, h2_config_var_t var);
-+apr_int64_t h2_config_cgeti64(conn_rec *c, h2_config_var_t var);
-+
-+/**
-+ * Get the configured value for variable <var> at the given server.
-+ */
-+int h2_config_sgeti(server_rec *s, h2_config_var_t var);
-+apr_int64_t h2_config_sgeti64(server_rec *s, h2_config_var_t var);
-+
-+/**
-+ * Get the configured value for variable <var> at the given request,
-+ * if configured for the request location.
-+ * Fallback to request server config otherwise.
-+ */
-+int h2_config_rgeti(request_rec *r, h2_config_var_t var);
-+apr_int64_t h2_config_rgeti64(request_rec *r, h2_config_var_t var);
-
--void h2_get_num_workers(server_rec *s, int *minw, int *maxw);
-+apr_array_header_t *h2_config_push_list(request_rec *r);
-+apr_array_header_t *h2_config_alt_svcs(request_rec *r);
-
-+
-+void h2_get_num_workers(server_rec *s, int *minw, int *maxw);
- void h2_config_init(apr_pool_t *pool);
-
--const struct h2_priority *h2_config_get_priority(const h2_config *conf,
-- const char *content_type);
-+const struct h2_priority *h2_cconfig_get_priority(conn_rec *c, const char *content_type);
-
- #endif /* __mod_h2__h2_config_h__ */
-
---- a/modules/http2/h2_conn.c
-+++ b/modules/http2/h2_conn.c
-@@ -18,6 +18,7 @@
- #include <apr_strings.h>
-
- #include <ap_mpm.h>
-+#include <ap_mmn.h>
-
- #include <httpd.h>
- #include <http_core.h>
-@@ -79,7 +80,7 @@
- mpm_type = H2_MPM_PREFORK;
- mpm_module = m;
- /* While http2 can work really well on prefork, it collides
-- * today's use case for prefork: runnning single-thread app engines
-+ * today's use case for prefork: running single-thread app engines
- * like php. If we restrict h2_workers to 1 per process, php will
- * work fine, but browser will be limited to 1 active request at a
- * time. */
-@@ -109,7 +110,6 @@
-
- apr_status_t h2_conn_child_init(apr_pool_t *pool, server_rec *s)
- {
-- const h2_config *config = h2_config_sget(s);
- apr_status_t status = APR_SUCCESS;
- int minw, maxw;
- int max_threads_per_child = 0;
-@@ -129,7 +129,7 @@
-
- h2_get_num_workers(s, &minw, &maxw);
-
-- idle_secs = h2_config_geti(config, H2_CONF_MAX_WORKER_IDLE_SECS);
-+ idle_secs = h2_config_sgeti(s, H2_CONF_MAX_WORKER_IDLE_SECS);
- ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s,
- "h2_workers: min=%d max=%d, mthrpchild=%d, idle_secs=%d",
- minw, maxw, max_threads_per_child, idle_secs);
-@@ -138,7 +138,7 @@
- ap_register_input_filter("H2_IN", h2_filter_core_input,
- NULL, AP_FTYPE_CONNECTION);
-
-- status = h2_mplx_child_init(pool, s);
-+ status = h2_mplx_m_child_init(pool, s);
-
- if (status == APR_SUCCESS) {
- status = apr_socket_create(&dummy_socket, APR_INET, SOCK_STREAM,
-@@ -172,9 +172,10 @@
- return mpm_module;
- }
-
--apr_status_t h2_conn_setup(h2_ctx *ctx, conn_rec *c, request_rec *r)
-+apr_status_t h2_conn_setup(conn_rec *c, request_rec *r, server_rec *s)
- {
- h2_session *session;
-+ h2_ctx *ctx;
- apr_status_t status;
-
- if (!workers) {
-@@ -183,24 +184,25 @@
- return APR_EGENERAL;
- }
-
-- if (r) {
-- status = h2_session_rcreate(&session, r, ctx, workers);
-- }
-- else {
-- status = h2_session_create(&session, c, ctx, workers);
-- }
--
-- if (status == APR_SUCCESS) {
-+ if (APR_SUCCESS == (status = h2_session_create(&session, c, r, s, workers))) {
-+ ctx = h2_ctx_get(c, 1);
- h2_ctx_session_set(ctx, session);
-+
-+ /* remove the input filter of mod_reqtimeout, now that the connection
-+ * is established and we have swtiched to h2. reqtimeout has supervised
-+ * possibly configured handshake timeouts and needs to get out of the way
-+ * now since the rest of its state handling assumes http/1.x to take place. */
-+ ap_remove_input_filter_byhandle(c->input_filters, "reqtimeout");
- }
-+
- return status;
- }
-
--apr_status_t h2_conn_run(struct h2_ctx *ctx, conn_rec *c)
-+apr_status_t h2_conn_run(conn_rec *c)
- {
- apr_status_t status;
- int mpm_state = 0;
-- h2_session *session = h2_ctx_session_get(ctx);
-+ h2_session *session = h2_ctx_get_session(c);
-
- ap_assert(session);
- do {
-@@ -235,6 +237,13 @@
- case H2_SESSION_ST_BUSY:
- case H2_SESSION_ST_WAIT:
- c->cs->state = CONN_STATE_WRITE_COMPLETION;
-+ if (c->cs && (session->open_streams || !session->remote.emitted_count)) {
-+ /* let the MPM know that we are not done and want
-+ * the Timeout behaviour instead of a KeepAliveTimeout
-+ * See PR 63534.
-+ */
-+ c->cs->sense = CONN_SENSE_WANT_READ;
-+ }
- break;
- case H2_SESSION_ST_CLEANUP:
- case H2_SESSION_ST_DONE:
-@@ -249,7 +258,7 @@
-
- apr_status_t h2_conn_pre_close(struct h2_ctx *ctx, conn_rec *c)
- {
-- h2_session *session = h2_ctx_session_get(ctx);
-+ h2_session *session = h2_ctx_get_session(c);
- if (session) {
- apr_status_t status = h2_session_pre_close(session, async_mpm);
- return (status == APR_SUCCESS)? DONE : status;
-@@ -257,7 +266,7 @@
- return DONE;
- }
-
--conn_rec *h2_slave_create(conn_rec *master, int slave_id, apr_pool_t *parent)
-+conn_rec *h2_secondary_create(conn_rec *master, int sec_id, apr_pool_t *parent)
- {
- apr_allocator_t *allocator;
- apr_status_t status;
-@@ -268,11 +277,11 @@
-
- ap_assert(master);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, master,
-- "h2_stream(%ld-%d): create slave", master->id, slave_id);
-+ "h2_stream(%ld-%d): create secondary", master->id, sec_id);
-
- /* We create a pool with its own allocator to be used for
- * processing a request. This is the only way to have the processing
-- * independant of its parent pool in the sense that it can work in
-+ * independent of its parent pool in the sense that it can work in
- * another thread. Also, the new allocator needs its own mutex to
- * synchronize sub-pools.
- */
-@@ -281,18 +290,18 @@
- status = apr_pool_create_ex(&pool, parent, NULL, allocator);
- if (status != APR_SUCCESS) {
- ap_log_cerror(APLOG_MARK, APLOG_ERR, status, master,
-- APLOGNO(10004) "h2_session(%ld-%d): create slave pool",
-- master->id, slave_id);
-+ APLOGNO(10004) "h2_session(%ld-%d): create secondary pool",
-+ master->id, sec_id);
- return NULL;
- }
- apr_allocator_owner_set(allocator, pool);
-- apr_pool_tag(pool, "h2_slave_conn");
-+ apr_pool_tag(pool, "h2_secondary_conn");
-
- c = (conn_rec *) apr_palloc(pool, sizeof(conn_rec));
- if (c == NULL) {
- ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, master,
-- APLOGNO(02913) "h2_session(%ld-%d): create slave",
-- master->id, slave_id);
-+ APLOGNO(02913) "h2_session(%ld-%d): create secondary",
-+ master->id, sec_id);
- apr_pool_destroy(pool);
- return NULL;
- }
-@@ -310,26 +319,28 @@
- c->filter_conn_ctx = NULL;
- #endif
- c->bucket_alloc = apr_bucket_alloc_create(pool);
-+#if !AP_MODULE_MAGIC_AT_LEAST(20180720, 1)
- c->data_in_input_filters = 0;
- c->data_in_output_filters = 0;
-+#endif
- /* prevent mpm_event from making wrong assumptions about this connection,
- * like e.g. using its socket for an async read check. */
- c->clogging_input_filters = 1;
- c->log = NULL;
- c->log_id = apr_psprintf(pool, "%ld-%d",
-- master->id, slave_id);
-+ master->id, sec_id);
- c->aborted = 0;
-- /* We cannot install the master connection socket on the slaves, as
-+ /* We cannot install the master connection socket on the secondary, as
- * modules mess with timeouts/blocking of the socket, with
- * unwanted side effects to the master connection processing.
-- * Fortunately, since we never use the slave socket, we can just install
-+ * Fortunately, since we never use the secondary socket, we can just install
- * a single, process-wide dummy and everyone is happy.
- */
- ap_set_module_config(c->conn_config, &core_module, dummy_socket);
- /* TODO: these should be unique to this thread */
- c->sbh = master->sbh;
-- /* TODO: not all mpm modules have learned about slave connections yet.
-- * copy their config from master to slave.
-+ /* TODO: not all mpm modules have learned about secondary connections yet.
-+ * copy their config from master to secondary.
- */
- if ((mpm = h2_conn_mpm_module()) != NULL) {
- cfg = ap_get_module_config(master->conn_config, mpm);
-@@ -337,38 +348,38 @@
- }
-
- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, c,
-- "h2_slave(%s): created", c->log_id);
-+ "h2_secondary(%s): created", c->log_id);
- return c;
- }
-
--void h2_slave_destroy(conn_rec *slave)
-+void h2_secondary_destroy(conn_rec *secondary)
- {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, slave,
-- "h2_slave(%s): destroy", slave->log_id);
-- slave->sbh = NULL;
-- apr_pool_destroy(slave->pool);
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, secondary,
-+ "h2_secondary(%s): destroy", secondary->log_id);
-+ secondary->sbh = NULL;
-+ apr_pool_destroy(secondary->pool);
- }
-
--apr_status_t h2_slave_run_pre_connection(conn_rec *slave, apr_socket_t *csd)
-+apr_status_t h2_secondary_run_pre_connection(conn_rec *secondary, apr_socket_t *csd)
- {
-- if (slave->keepalives == 0) {
-+ if (secondary->keepalives == 0) {
- /* Simulate that we had already a request on this connection. Some
- * hooks trigger special behaviour when keepalives is 0.
- * (Not necessarily in pre_connection, but later. Set it here, so it
- * is in place.) */
-- slave->keepalives = 1;
-+ secondary->keepalives = 1;
- /* We signal that this connection will be closed after the request.
- * Which is true in that sense that we throw away all traffic data
-- * on this slave connection after each requests. Although we might
-+ * on this secondary connection after each requests. Although we might
- * reuse internal structures like memory pools.
- * The wanted effect of this is that httpd does not try to clean up
- * any dangling data on this connection when a request is done. Which
-- * is unneccessary on a h2 stream.
-+ * is unnecessary on a h2 stream.
- */
-- slave->keepalive = AP_CONN_CLOSE;
-- return ap_run_pre_connection(slave, csd);
-+ secondary->keepalive = AP_CONN_CLOSE;
-+ return ap_run_pre_connection(secondary, csd);
- }
-- ap_assert(slave->output_filters);
-+ ap_assert(secondary->output_filters);
- return APR_SUCCESS;
- }
-
---- a/modules/http2/h2_conn.h
-+++ b/modules/http2/h2_conn.h
-@@ -23,21 +23,21 @@
- /**
- * Setup the connection and our context for HTTP/2 processing
- *
-- * @param ctx the http2 context to setup
- * @param c the connection HTTP/2 is starting on
- * @param r the upgrade request that still awaits an answer, optional
-+ * @param s the server selected for this connection (can be != c->base_server)
- */
--apr_status_t h2_conn_setup(struct h2_ctx *ctx, conn_rec *c, request_rec *r);
-+apr_status_t h2_conn_setup(conn_rec *c, request_rec *r, server_rec *s);
-
- /**
- * Run the HTTP/2 connection in synchronous fashion.
- * Return when the HTTP/2 session is done
- * and the connection will close or a fatal error occurred.
- *
-- * @param ctx the http2 context to run
-+ * @param c the http2 connection to run
- * @return APR_SUCCESS when session is done.
- */
--apr_status_t h2_conn_run(struct h2_ctx *ctx, conn_rec *c);
-+apr_status_t h2_conn_run(conn_rec *c);
-
- /**
- * The connection is about to close. If we have not send a GOAWAY
-@@ -68,10 +68,10 @@
- const char *h2_conn_mpm_name(void);
- int h2_mpm_supported(void);
-
--conn_rec *h2_slave_create(conn_rec *master, int slave_id, apr_pool_t *parent);
--void h2_slave_destroy(conn_rec *slave);
-+conn_rec *h2_secondary_create(conn_rec *master, int sec_id, apr_pool_t *parent);
-+void h2_secondary_destroy(conn_rec *secondary);
-
--apr_status_t h2_slave_run_pre_connection(conn_rec *slave, apr_socket_t *csd);
--void h2_slave_run_connection(conn_rec *slave);
-+apr_status_t h2_secondary_run_pre_connection(conn_rec *secondary, apr_socket_t *csd);
-+void h2_secondary_run_connection(conn_rec *secondary);
-
- #endif /* defined(__mod_h2__h2_conn__) */
---- a/modules/http2/h2_conn_io.c
-+++ b/modules/http2/h2_conn_io.c
-@@ -40,12 +40,17 @@
- * ~= 1300 bytes */
- #define WRITE_SIZE_INITIAL 1300
-
--/* Calculated like this: max TLS record size 16*1024
-- * - 40 (IP) - 20 (TCP) - 40 (TCP options)
-- * - TLS overhead (60-100)
-- * which seems to create less TCP packets overall
-+/* The maximum we'd like to write in one chunk is
-+ * the max size of a TLS record. When pushing
-+ * many frames down the h2 connection, this might
-+ * align differently because of headers and other
-+ * frames or simply as not sufficient data is
-+ * in a response body.
-+ * However keeping frames at or below this limit
-+ * should make optimizations at the layer that writes
-+ * to TLS easier.
- */
--#define WRITE_SIZE_MAX (TLS_DATA_MAX - 100)
-+#define WRITE_SIZE_MAX (TLS_DATA_MAX)
-
-
- static void h2_conn_io_bb_log(conn_rec *c, int stream_id, int level,
-@@ -123,21 +128,20 @@
-
- }
-
--apr_status_t h2_conn_io_init(h2_conn_io *io, conn_rec *c,
-- const h2_config *cfg)
-+apr_status_t h2_conn_io_init(h2_conn_io *io, conn_rec *c, server_rec *s)
- {
- io->c = c;
- io->output = apr_brigade_create(c->pool, c->bucket_alloc);
- io->is_tls = h2_h2_is_tls(c);
- io->buffer_output = io->is_tls;
-- io->flush_threshold = (apr_size_t)h2_config_geti64(cfg, H2_CONF_STREAM_MAX_MEM);
-+ io->flush_threshold = (apr_size_t)h2_config_sgeti64(s, H2_CONF_STREAM_MAX_MEM);
-
- if (io->is_tls) {
- /* This is what we start with,
- * see https://issues.apache.org/jira/browse/TS-2503
- */
-- io->warmup_size = h2_config_geti64(cfg, H2_CONF_TLS_WARMUP_SIZE);
-- io->cooldown_usecs = (h2_config_geti(cfg, H2_CONF_TLS_COOLDOWN_SECS)
-+ io->warmup_size = h2_config_sgeti64(s, H2_CONF_TLS_WARMUP_SIZE);
-+ io->cooldown_usecs = (h2_config_sgeti(s, H2_CONF_TLS_COOLDOWN_SECS)
- * APR_USEC_PER_SEC);
- io->write_size = (io->cooldown_usecs > 0?
- WRITE_SIZE_INITIAL : WRITE_SIZE_MAX);
---- a/modules/http2/h2_conn_io.h
-+++ b/modules/http2/h2_conn_io.h
-@@ -48,8 +48,7 @@
- apr_size_t slen;
- } h2_conn_io;
-
--apr_status_t h2_conn_io_init(h2_conn_io *io, conn_rec *c,
-- const struct h2_config *cfg);
-+apr_status_t h2_conn_io_init(h2_conn_io *io, conn_rec *c, server_rec *s);
-
- /**
- * Append data to the buffered output.
---- a/modules/http2/h2_ctx.c
-+++ b/modules/http2/h2_ctx.c
-@@ -29,8 +29,8 @@
- {
- h2_ctx *ctx = apr_pcalloc(c->pool, sizeof(h2_ctx));
- ap_assert(ctx);
-+ h2_ctx_server_update(ctx, c->base_server);
- ap_set_module_config(c->conn_config, &http2_module, ctx);
-- h2_ctx_server_set(ctx, c->base_server);
- return ctx;
- }
-
-@@ -79,8 +79,9 @@
- return ctx;
- }
-
--h2_session *h2_ctx_session_get(h2_ctx *ctx)
-+h2_session *h2_ctx_get_session(conn_rec *c)
- {
-+ h2_ctx *ctx = h2_ctx_get(c, 0);
- return ctx? ctx->session : NULL;
- }
-
-@@ -89,33 +90,17 @@
- ctx->session = session;
- }
-
--server_rec *h2_ctx_server_get(h2_ctx *ctx)
-+h2_ctx *h2_ctx_server_update(h2_ctx *ctx, server_rec *s)
- {
-- return ctx? ctx->server : NULL;
--}
--
--h2_ctx *h2_ctx_server_set(h2_ctx *ctx, server_rec *s)
--{
-- ctx->server = s;
-+ if (ctx->server != s) {
-+ ctx->server = s;
-+ }
- return ctx;
- }
-
--int h2_ctx_is_task(h2_ctx *ctx)
--{
-- return ctx && ctx->task;
--}
--
--h2_task *h2_ctx_get_task(h2_ctx *ctx)
-+h2_task *h2_ctx_get_task(conn_rec *c)
- {
-+ h2_ctx *ctx = h2_ctx_get(c, 0);
- return ctx? ctx->task : NULL;
- }
-
--h2_task *h2_ctx_cget_task(conn_rec *c)
--{
-- return h2_ctx_get_task(h2_ctx_get(c, 0));
--}
--
--h2_task *h2_ctx_rget_task(request_rec *r)
--{
-- return h2_ctx_get_task(h2_ctx_rget(r));
--}
---- a/modules/http2/h2_ctx.h
-+++ b/modules/http2/h2_ctx.h
-@@ -56,12 +56,11 @@
- */
- h2_ctx *h2_ctx_protocol_set(h2_ctx *ctx, const char *proto);
-
--/* Set the server_rec relevant for this context.
-+/* Update the server_rec relevant for this context. A server for
-+ * a connection may change during SNI handling, for example.
- */
--h2_ctx *h2_ctx_server_set(h2_ctx *ctx, server_rec *s);
--server_rec *h2_ctx_server_get(h2_ctx *ctx);
-+h2_ctx *h2_ctx_server_update(h2_ctx *ctx, server_rec *s);
-
--struct h2_session *h2_ctx_session_get(h2_ctx *ctx);
- void h2_ctx_session_set(h2_ctx *ctx, struct h2_session *session);
-
- /**
-@@ -69,10 +68,8 @@
- */
- const char *h2_ctx_protocol_get(const conn_rec *c);
-
--int h2_ctx_is_task(h2_ctx *ctx);
-+struct h2_session *h2_ctx_get_session(conn_rec *c);
-+struct h2_task *h2_ctx_get_task(conn_rec *c);
-
--struct h2_task *h2_ctx_get_task(h2_ctx *ctx);
--struct h2_task *h2_ctx_cget_task(conn_rec *c);
--struct h2_task *h2_ctx_rget_task(request_rec *r);
-
- #endif /* defined(__mod_h2__h2_ctx__) */
---- a/modules/http2/h2_filter.c
-+++ b/modules/http2/h2_filter.c
-@@ -54,6 +54,7 @@
- const char *data;
- ssize_t n;
-
-+ (void)c;
- status = apr_bucket_read(b, &data, &len, block);
-
- while (status == APR_SUCCESS && len > 0) {
-@@ -71,10 +72,10 @@
- }
- else {
- session->io.bytes_read += n;
-- if (len <= n) {
-+ if ((apr_ssize_t)len <= n) {
- break;
- }
-- len -= n;
-+ len -= (apr_size_t)n;
- data += n;
- }
- }
-@@ -277,6 +278,7 @@
- apr_bucket_brigade *dest,
- const apr_bucket *src)
- {
-+ (void)beam;
- if (H2_BUCKET_IS_OBSERVER(src)) {
- h2_bucket_observer *l = (h2_bucket_observer *)src->data;
- apr_bucket *b = h2_bucket_observer_create(dest->bucket_alloc,
-@@ -311,8 +313,7 @@
- bbout(bb, " \"settings\": {\n");
- bbout(bb, " \"SETTINGS_MAX_CONCURRENT_STREAMS\": %d,\n", m->max_streams);
- bbout(bb, " \"SETTINGS_MAX_FRAME_SIZE\": %d,\n", 16*1024);
-- bbout(bb, " \"SETTINGS_INITIAL_WINDOW_SIZE\": %d,\n",
-- h2_config_geti(s->config, H2_CONF_WIN_SIZE));
-+ bbout(bb, " \"SETTINGS_INITIAL_WINDOW_SIZE\": %d,\n", h2_config_sgeti(s->s, H2_CONF_WIN_SIZE));
- bbout(bb, " \"SETTINGS_ENABLE_PUSH\": %d\n", h2_session_push_enabled(s));
- bbout(bb, " }%s\n", last? "" : ",");
- }
-@@ -369,7 +370,7 @@
- x.s = s;
- x.idx = 0;
- bbout(bb, " \"streams\": {");
-- h2_mplx_stream_do(s->mplx, add_stream, &x);
-+ h2_mplx_m_stream_do(s->mplx, add_stream, &x);
- bbout(bb, "\n }%s\n", last? "" : ",");
- }
-
-@@ -431,41 +432,38 @@
-
- static apr_status_t h2_status_insert(h2_task *task, apr_bucket *b)
- {
-- conn_rec *c = task->c->master;
-- h2_ctx *h2ctx = h2_ctx_get(c, 0);
-- h2_session *session;
-- h2_stream *stream;
-+ h2_mplx *m = task->mplx;
-+ h2_stream *stream = h2_mplx_t_stream_get(m, task);
-+ h2_session *s;
-+ conn_rec *c;
-+
- apr_bucket_brigade *bb;
- apr_bucket *e;
- int32_t connFlowIn, connFlowOut;
-
--
-- if (!h2ctx || (session = h2_ctx_session_get(h2ctx)) == NULL) {
-- return APR_SUCCESS;
-- }
--
-- stream = h2_session_stream_get(session, task->stream_id);
- if (!stream) {
- /* stream already done */
- return APR_SUCCESS;
- }
-+ s = stream->session;
-+ c = s->c;
-
- bb = apr_brigade_create(stream->pool, c->bucket_alloc);
-
-- connFlowIn = nghttp2_session_get_effective_local_window_size(session->ngh2);
-- connFlowOut = nghttp2_session_get_remote_window_size(session->ngh2);
-+ connFlowIn = nghttp2_session_get_effective_local_window_size(s->ngh2);
-+ connFlowOut = nghttp2_session_get_remote_window_size(s->ngh2);
-
- bbout(bb, "{\n");
- bbout(bb, " \"version\": \"draft-01\",\n");
-- add_settings(bb, session, 0);
-- add_peer_settings(bb, session, 0);
-+ add_settings(bb, s, 0);
-+ add_peer_settings(bb, s, 0);
- bbout(bb, " \"connFlowIn\": %d,\n", connFlowIn);
- bbout(bb, " \"connFlowOut\": %d,\n", connFlowOut);
-- bbout(bb, " \"sentGoAway\": %d,\n", session->local.shutdown);
-+ bbout(bb, " \"sentGoAway\": %d,\n", s->local.shutdown);
-
-- add_streams(bb, session, 0);
-+ add_streams(bb, s, 0);
-
-- add_stats(bb, session, stream, 1);
-+ add_stats(bb, s, stream, 1);
- bbout(bb, "}\n");
-
- while ((e = APR_BRIGADE_FIRST(bb)) != APR_BRIGADE_SENTINEL(bb)) {
-@@ -495,9 +493,54 @@
- return APR_SUCCESS;
- }
-
-+static apr_status_t discard_body(request_rec *r, apr_off_t maxlen)
-+{
-+ apr_bucket_brigade *bb;
-+ int seen_eos;
-+ apr_status_t rv;
-+
-+ bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
-+ seen_eos = 0;
-+ do {
-+ apr_bucket *bucket;
-+
-+ rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
-+ APR_BLOCK_READ, HUGE_STRING_LEN);
-+
-+ if (rv != APR_SUCCESS) {
-+ apr_brigade_destroy(bb);
-+ return rv;
-+ }
-+
-+ for (bucket = APR_BRIGADE_FIRST(bb);
-+ bucket != APR_BRIGADE_SENTINEL(bb);
-+ bucket = APR_BUCKET_NEXT(bucket))
-+ {
-+ const char *data;
-+ apr_size_t len;
-+
-+ if (APR_BUCKET_IS_EOS(bucket)) {
-+ seen_eos = 1;
-+ break;
-+ }
-+ if (bucket->length == 0) {
-+ continue;
-+ }
-+ rv = apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
-+ if (rv != APR_SUCCESS) {
-+ apr_brigade_destroy(bb);
-+ return rv;
-+ }
-+ maxlen -= bucket->length;
-+ }
-+ apr_brigade_cleanup(bb);
-+ } while (!seen_eos && maxlen >= 0);
-+
-+ return APR_SUCCESS;
-+}
-+
- int h2_filter_h2_status_handler(request_rec *r)
- {
-- h2_ctx *ctx = h2_ctx_rget(r);
- conn_rec *c = r->connection;
- h2_task *task;
- apr_bucket_brigade *bb;
-@@ -511,10 +554,12 @@
- return DECLINED;
- }
-
-- task = ctx? h2_ctx_get_task(ctx) : NULL;
-+ task = h2_ctx_get_task(r->connection);
- if (task) {
--
-- if ((status = ap_discard_request_body(r)) != OK) {
-+ /* In this handler, we do some special sauce to send footers back,
-+ * IFF we received footers in the request. This is used in our test
-+ * cases, since CGI has no way of handling those. */
-+ if ((status = discard_body(r, 1024)) != OK) {
- return status;
- }
-
---- a/modules/http2/h2_from_h1.c
-+++ b/modules/http2/h2_from_h1.c
-@@ -315,6 +315,7 @@
- int http_status;
- apr_array_header_t *hlines;
- apr_bucket_brigade *tmp;
-+ apr_bucket_brigade *saveto;
- } h2_response_parser;
-
- static apr_status_t parse_header(h2_response_parser *parser, char *line) {
-@@ -351,13 +352,17 @@
- parser->tmp = apr_brigade_create(task->pool, task->c->bucket_alloc);
- }
- status = apr_brigade_split_line(parser->tmp, bb, APR_BLOCK_READ,
-- HUGE_STRING_LEN);
-+ len);
- if (status == APR_SUCCESS) {
- --len;
- status = apr_brigade_flatten(parser->tmp, line, &len);
- if (status == APR_SUCCESS) {
- /* we assume a non-0 containing line and remove trailing crlf. */
- line[len] = '\0';
-+ /*
-+ * XXX: What to do if there is an LF but no CRLF?
-+ * Should we error out?
-+ */
- if (len >= 2 && !strcmp(H2_CRLF, line + len - 2)) {
- len -= 2;
- line[len] = '\0';
-@@ -367,10 +372,47 @@
- task->id, line);
- }
- else {
-+ apr_off_t brigade_length;
-+
-+ /*
-+ * If the brigade parser->tmp becomes longer than our buffer
-+ * for flattening we never have a chance to get a complete
-+ * line. This can happen if we are called multiple times after
-+ * previous calls did not find a H2_CRLF and we returned
-+ * APR_EAGAIN. In this case parser->tmp (correctly) grows
-+ * with each call to apr_brigade_split_line.
-+ *
-+ * XXX: Currently a stack based buffer of HUGE_STRING_LEN is
-+ * used. This means we cannot cope with lines larger than
-+ * HUGE_STRING_LEN which might be an issue.
-+ */
-+ status = apr_brigade_length(parser->tmp, 0, &brigade_length);
-+ if ((status != APR_SUCCESS) || (brigade_length > len)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, task->c, APLOGNO(10257)
-+ "h2_task(%s): read response, line too long",
-+ task->id);
-+ return APR_ENOSPC;
-+ }
- /* this does not look like a complete line yet */
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c,
- "h2_task(%s): read response, incomplete line: %s",
- task->id, line);
-+ if (!parser->saveto) {
-+ parser->saveto = apr_brigade_create(task->pool,
-+ task->c->bucket_alloc);
-+ }
-+ /*
-+ * Be on the save side and save the parser->tmp brigade
-+ * as it could contain transient buckets which could be
-+ * invalid next time we are here.
-+ *
-+ * NULL for the filter parameter is ok since we
-+ * provide our own brigade as second parameter
-+ * and ap_save_brigade does not need to create one.
-+ */
-+ ap_save_brigade(NULL, &(parser->saveto), &(parser->tmp),
-+ parser->tmp->p);
-+ APR_BRIGADE_CONCAT(parser->tmp, parser->saveto);
- return APR_EAGAIN;
- }
- }
-@@ -594,18 +636,20 @@
- }
- }
-
-- if (r->header_only) {
-+ if (r->header_only || AP_STATUS_IS_HEADER_ONLY(r->status)) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c,
-- "h2_task(%s): header_only, cleanup output brigade",
-+ "h2_task(%s): headers only, cleanup output brigade",
- task->id);
- b = body_bucket? body_bucket : APR_BRIGADE_FIRST(bb);
- while (b != APR_BRIGADE_SENTINEL(bb)) {
- next = APR_BUCKET_NEXT(b);
- if (APR_BUCKET_IS_EOS(b) || AP_BUCKET_IS_EOR(b)) {
- break;
-- }
-- APR_BUCKET_REMOVE(b);
-- apr_bucket_destroy(b);
-+ }
-+ if (!H2_BUCKET_IS_HEADERS(b)) {
-+ APR_BUCKET_REMOVE(b);
-+ apr_bucket_destroy(b);
-+ }
- b = next;
- }
- }
---- a/modules/http2/h2_h2.c
-+++ b/modules/http2/h2_h2.c
-@@ -463,19 +463,18 @@
- return opt_ssl_is_https && opt_ssl_is_https(c);
- }
-
--int h2_is_acceptable_connection(conn_rec *c, int require_all)
-+int h2_is_acceptable_connection(conn_rec *c, request_rec *r, int require_all)
- {
- int is_tls = h2_h2_is_tls(c);
-- const h2_config *cfg = h2_config_get(c);
-
-- if (is_tls && h2_config_geti(cfg, H2_CONF_MODERN_TLS_ONLY) > 0) {
-+ if (is_tls && h2_config_cgeti(c, H2_CONF_MODERN_TLS_ONLY) > 0) {
- /* Check TLS connection for modern TLS parameters, as defined in
- * RFC 7540 and https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility
- */
- apr_pool_t *pool = c->pool;
- server_rec *s = c->base_server;
- char *val;
--
-+
- if (!opt_ssl_var_lookup) {
- /* unable to check */
- return 0;
-@@ -521,33 +520,29 @@
- return 1;
- }
-
--int h2_allows_h2_direct(conn_rec *c)
-+static int h2_allows_h2_direct(conn_rec *c)
- {
-- const h2_config *cfg = h2_config_get(c);
- int is_tls = h2_h2_is_tls(c);
- const char *needed_protocol = is_tls? "h2" : "h2c";
-- int h2_direct = h2_config_geti(cfg, H2_CONF_DIRECT);
-+ int h2_direct = h2_config_cgeti(c, H2_CONF_DIRECT);
-
- if (h2_direct < 0) {
- h2_direct = is_tls? 0 : 1;
- }
-- return (h2_direct
-- && ap_is_allowed_protocol(c, NULL, NULL, needed_protocol));
-+ return (h2_direct && ap_is_allowed_protocol(c, NULL, NULL, needed_protocol));
- }
-
--int h2_allows_h2_upgrade(conn_rec *c)
-+int h2_allows_h2_upgrade(request_rec *r)
- {
-- const h2_config *cfg = h2_config_get(c);
-- int h2_upgrade = h2_config_geti(cfg, H2_CONF_UPGRADE);
--
-- return h2_upgrade > 0 || (h2_upgrade < 0 && !h2_h2_is_tls(c));
-+ int h2_upgrade = h2_config_rgeti(r, H2_CONF_UPGRADE);
-+ return h2_upgrade > 0 || (h2_upgrade < 0 && !h2_h2_is_tls(r->connection));
- }
-
- /*******************************************************************************
- * Register various hooks
- */
- static const char* const mod_ssl[] = { "mod_ssl.c", NULL};
--static const char* const mod_reqtimeout[] = { "mod_reqtimeout.c", NULL};
-+static const char* const mod_reqtimeout[] = { "mod_ssl.c", "mod_reqtimeout.c", NULL};
-
- void h2_h2_register_hooks(void)
- {
-@@ -558,7 +553,7 @@
- * a chance to take over before it.
- */
- ap_hook_process_connection(h2_h2_process_conn,
-- mod_ssl, mod_reqtimeout, APR_HOOK_LAST);
-+ mod_reqtimeout, NULL, APR_HOOK_LAST);
-
- /* One last chance to properly say goodbye if we have not done so
- * already. */
-@@ -581,14 +576,17 @@
- {
- apr_status_t status;
- h2_ctx *ctx;
-+ server_rec *s;
-
- if (c->master) {
- return DECLINED;
- }
-
- ctx = h2_ctx_get(c, 0);
-+ s = ctx? ctx->server : c->base_server;
-+
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_h2, process_conn");
-- if (h2_ctx_is_task(ctx)) {
-+ if (ctx && ctx->task) {
- /* our stream pseudo connection */
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, "h2_h2, task, declined");
- return DECLINED;
-@@ -601,19 +599,19 @@
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_h2, process_conn, "
- "new connection using protocol '%s', direct=%d, "
- "tls acceptable=%d", proto, h2_allows_h2_direct(c),
-- h2_is_acceptable_connection(c, 1));
-+ h2_is_acceptable_connection(c, NULL, 1));
- }
-
- if (!strcmp(AP_PROTOCOL_HTTP1, proto)
- && h2_allows_h2_direct(c)
-- && h2_is_acceptable_connection(c, 1)) {
-+ && h2_is_acceptable_connection(c, NULL, 1)) {
- /* Fresh connection still is on http/1.1 and H2Direct is enabled.
- * Otherwise connection is in a fully acceptable state.
- * -> peek at the first 24 incoming bytes
- */
- apr_bucket_brigade *temp;
-- char *s = NULL;
-- apr_size_t slen;
-+ char *peek = NULL;
-+ apr_size_t peeklen;
-
- temp = apr_brigade_create(c->pool, c->bucket_alloc);
- status = ap_get_brigade(c->input_filters, temp,
-@@ -626,8 +624,8 @@
- return DECLINED;
- }
-
-- apr_brigade_pflatten(temp, &s, &slen, c->pool);
-- if ((slen >= 24) && !memcmp(H2_MAGIC_TOKEN, s, 24)) {
-+ apr_brigade_pflatten(temp, &peek, &peeklen, c->pool);
-+ if ((peeklen >= 24) && !memcmp(H2_MAGIC_TOKEN, peek, 24)) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
- "h2_h2, direct mode detected");
- if (!ctx) {
-@@ -638,7 +636,7 @@
- else if (APLOGctrace2(c)) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
- "h2_h2, not detected in %d bytes(base64): %s",
-- (int)slen, h2_util_base64url_encode(s, slen, c->pool));
-+ (int)peeklen, h2_util_base64url_encode(peek, peeklen, c->pool));
- }
-
- apr_brigade_destroy(temp);
-@@ -647,15 +645,16 @@
-
- if (ctx) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "process_conn");
-- if (!h2_ctx_session_get(ctx)) {
-- status = h2_conn_setup(ctx, c, NULL);
-+
-+ if (!h2_ctx_get_session(c)) {
-+ status = h2_conn_setup(c, NULL, s);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, c, "conn_setup");
- if (status != APR_SUCCESS) {
- h2_ctx_clear(c);
- return !OK;
- }
- }
-- h2_conn_run(ctx, c);
-+ h2_conn_run(c);
- return OK;
- }
-
-@@ -667,7 +666,7 @@
- {
- h2_ctx *ctx;
-
-- /* slave connection? */
-+ /* secondary connection? */
- if (c->master) {
- return DECLINED;
- }
-@@ -684,16 +683,17 @@
-
- static void check_push(request_rec *r, const char *tag)
- {
-- const h2_config *conf = h2_config_rget(r);
-- if (!r->expecting_100
-- && conf && conf->push_list && conf->push_list->nelts > 0) {
-+ apr_array_header_t *push_list = h2_config_push_list(r);
-+
-+ if (!r->expecting_100 && push_list && push_list->nelts > 0) {
- int i, old_status;
- const char *old_line;
-+
- ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r,
- "%s, early announcing %d resources for push",
-- tag, conf->push_list->nelts);
-- for (i = 0; i < conf->push_list->nelts; ++i) {
-- h2_push_res *push = &APR_ARRAY_IDX(conf->push_list, i, h2_push_res);
-+ tag, push_list->nelts);
-+ for (i = 0; i < push_list->nelts; ++i) {
-+ h2_push_res *push = &APR_ARRAY_IDX(push_list, i, h2_push_res);
- apr_table_add(r->headers_out, "Link",
- apr_psprintf(r->pool, "<%s>; rel=preload%s",
- push->uri_ref, push->critical? "; critical" : ""));
-@@ -710,10 +710,9 @@
-
- static int h2_h2_post_read_req(request_rec *r)
- {
-- /* slave connection? */
-+ /* secondary connection? */
- if (r->connection->master) {
-- h2_ctx *ctx = h2_ctx_rget(r);
-- struct h2_task *task = h2_ctx_get_task(ctx);
-+ struct h2_task *task = h2_ctx_get_task(r->connection);
- /* This hook will get called twice on internal redirects. Take care
- * that we manipulate filters only once. */
- if (task && !task->filters_set) {
-@@ -730,7 +729,7 @@
- ap_add_output_filter("H2_RESPONSE", task, r, r->connection);
-
- for (f = r->input_filters; f; f = f->next) {
-- if (!strcmp("H2_SLAVE_IN", f->frec->name)) {
-+ if (!strcmp("H2_SECONDARY_IN", f->frec->name)) {
- f->r = r;
- break;
- }
-@@ -744,17 +743,15 @@
-
- static int h2_h2_late_fixups(request_rec *r)
- {
-- /* slave connection? */
-+ /* secondary connection? */
- if (r->connection->master) {
-- h2_ctx *ctx = h2_ctx_rget(r);
-- struct h2_task *task = h2_ctx_get_task(ctx);
-+ struct h2_task *task = h2_ctx_get_task(r->connection);
- if (task) {
- /* check if we copy vs. setaside files in this location */
-- task->output.copy_files = h2_config_geti(h2_config_rget(r),
-- H2_CONF_COPY_FILES);
-+ task->output.copy_files = h2_config_rgeti(r, H2_CONF_COPY_FILES);
- if (task->output.copy_files) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c,
-- "h2_slave_out(%s): copy_files on", task->id);
-+ "h2_secondary_out(%s): copy_files on", task->id);
- h2_beam_on_file_beam(task->output.beam, h2_beam_no_files, NULL);
- }
- check_push(r, "late_fixup");
---- a/modules/http2/h2_h2.h
-+++ b/modules/http2/h2_h2.h
-@@ -57,23 +57,15 @@
- * the handshake is still ongoing.
- * @return != 0 iff connection requirements are met
- */
--int h2_is_acceptable_connection(conn_rec *c, int require_all);
--
--/**
-- * Check if the "direct" HTTP/2 mode of protocol handling is enabled
-- * for the given connection.
-- * @param c the connection to check
-- * @return != 0 iff direct mode is enabled
-- */
--int h2_allows_h2_direct(conn_rec *c);
-+int h2_is_acceptable_connection(conn_rec *c, request_rec *r, int require_all);
-
- /**
- * Check if the "Upgrade" HTTP/1.1 mode of protocol switching is enabled
-- * for the given connection.
-- * @param c the connection to check
-+ * for the given request.
-+ * @param r the request to check
- * @return != 0 iff Upgrade switching is enabled
- */
--int h2_allows_h2_upgrade(conn_rec *c);
-+int h2_allows_h2_upgrade(request_rec *r);
-
-
- #endif /* defined(__mod_h2__h2_h2__) */
---- a/modules/http2/h2_headers.c
-+++ b/modules/http2/h2_headers.c
-@@ -28,6 +28,7 @@
-
- #include "h2_private.h"
- #include "h2_h2.h"
-+#include "h2_config.h"
- #include "h2_util.h"
- #include "h2_request.h"
- #include "h2_headers.h"
-@@ -101,8 +102,9 @@
- const apr_bucket *src)
- {
- if (H2_BUCKET_IS_HEADERS(src)) {
-- h2_headers *r = ((h2_bucket_headers *)src->data)->headers;
-- apr_bucket *b = h2_bucket_headers_create(dest->bucket_alloc, r);
-+ h2_headers *src_headers = ((h2_bucket_headers *)src->data)->headers;
-+ apr_bucket *b = h2_bucket_headers_create(dest->bucket_alloc,
-+ h2_headers_clone(dest->p, src_headers));
- APR_BRIGADE_INSERT_TAIL(dest, b);
- return b;
- }
-@@ -128,28 +130,41 @@
- {
- h2_headers *headers = h2_headers_create(status, header, r->notes, 0, pool);
- if (headers->status == HTTP_FORBIDDEN) {
-- const char *cause = apr_table_get(r->notes, "ssl-renegotiate-forbidden");
-- if (cause) {
-- /* This request triggered a TLS renegotiation that is now allowed
-- * in HTTP/2. Tell the client that it should use HTTP/1.1 for this.
-- */
-- ap_log_rerror(APLOG_MARK, APLOG_DEBUG, headers->status, r,
-- APLOGNO(03061)
-- "h2_headers(%ld): renegotiate forbidden, cause: %s",
-- (long)r->connection->id, cause);
-- headers->status = H2_ERR_HTTP_1_1_REQUIRED;
-+ request_rec *r_prev;
-+ for (r_prev = r; r_prev != NULL; r_prev = r_prev->prev) {
-+ const char *cause = apr_table_get(r_prev->notes, "ssl-renegotiate-forbidden");
-+ if (cause) {
-+ /* This request triggered a TLS renegotiation that is not allowed
-+ * in HTTP/2. Tell the client that it should use HTTP/1.1 for this.
-+ */
-+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, headers->status, r,
-+ APLOGNO(03061)
-+ "h2_headers(%ld): renegotiate forbidden, cause: %s",
-+ (long)r->connection->id, cause);
-+ headers->status = H2_ERR_HTTP_1_1_REQUIRED;
-+ break;
-+ }
- }
- }
- if (is_unsafe(r->server)) {
-- apr_table_setn(headers->notes, H2_HDR_CONFORMANCE,
-- H2_HDR_CONFORMANCE_UNSAFE);
-+ apr_table_setn(headers->notes, H2_HDR_CONFORMANCE, H2_HDR_CONFORMANCE_UNSAFE);
-+ }
-+ if (h2_config_rgeti(r, H2_CONF_PUSH) == 0 && h2_config_sgeti(r->server, H2_CONF_PUSH) != 0) {
-+ apr_table_setn(headers->notes, H2_PUSH_MODE_NOTE, "0");
- }
- return headers;
- }
-
- h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h)
- {
-- return h2_headers_create(h->status, h->headers, h->notes, h->raw_bytes, pool);
-+ return h2_headers_create(h->status, apr_table_copy(pool, h->headers),
-+ apr_table_copy(pool, h->notes), h->raw_bytes, pool);
-+}
-+
-+h2_headers *h2_headers_clone(apr_pool_t *pool, h2_headers *h)
-+{
-+ return h2_headers_create(h->status, apr_table_clone(pool, h->headers),
-+ apr_table_clone(pool, h->notes), h->raw_bytes, pool);
- }
-
- h2_headers *h2_headers_die(apr_status_t type,
---- a/modules/http2/h2_headers.h
-+++ b/modules/http2/h2_headers.h
-@@ -59,12 +59,18 @@
- apr_table_t *header, apr_pool_t *pool);
-
- /**
-- * Clone the headers into another pool. This will not copy any
-+ * Copy the headers into another pool. This will not copy any
- * header strings.
- */
- h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h);
-
- /**
-+ * Clone the headers into another pool. This will also clone any
-+ * header strings.
-+ */
-+h2_headers *h2_headers_clone(apr_pool_t *pool, h2_headers *h);
-+
-+/**
- * Create the headers for the given error.
- * @param stream_id id of the stream to create the headers for
- * @param type the error code
---- a/modules/http2/h2_mplx.c
-+++ b/modules/http2/h2_mplx.c
-@@ -40,7 +40,6 @@
- #include "h2_ctx.h"
- #include "h2_h2.h"
- #include "h2_mplx.h"
--#include "h2_ngn_shed.h"
- #include "h2_request.h"
- #include "h2_stream.h"
- #include "h2_session.h"
-@@ -54,9 +53,21 @@
- h2_mplx *m;
- h2_stream *stream;
- apr_time_t now;
-+ apr_size_t count;
- } stream_iter_ctx;
-
--apr_status_t h2_mplx_child_init(apr_pool_t *pool, server_rec *s)
-+/**
-+ * Naming convention for static functions:
-+ * - m_*: function only called from the master connection
-+ * - s_*: function only called from a secondary connection
-+ * - t_*: function only called from a h2_task holder
-+ * - mst_*: function called from everyone
-+ */
-+
-+static apr_status_t s_mplx_be_happy(h2_mplx *m, h2_task *task);
-+static apr_status_t m_be_annoyed(h2_mplx *m);
-+
-+apr_status_t h2_mplx_m_child_init(apr_pool_t *pool, server_rec *s)
- {
- return APR_SUCCESS;
- }
-@@ -72,46 +83,40 @@
- #define H2_MPLX_ENTER_ALWAYS(m) \
- apr_thread_mutex_lock(m->lock)
-
--#define H2_MPLX_ENTER_MAYBE(m, lock) \
-- if (lock) apr_thread_mutex_lock(m->lock)
-+#define H2_MPLX_ENTER_MAYBE(m, dolock) \
-+ if (dolock) apr_thread_mutex_lock(m->lock)
-
--#define H2_MPLX_LEAVE_MAYBE(m, lock) \
-- if (lock) apr_thread_mutex_unlock(m->lock)
-+#define H2_MPLX_LEAVE_MAYBE(m, dolock) \
-+ if (dolock) apr_thread_mutex_unlock(m->lock)
-
--static void check_data_for(h2_mplx *m, h2_stream *stream, int lock);
-+static void mst_check_data_for(h2_mplx *m, h2_stream *stream, int mplx_is_locked);
-
--static void stream_output_consumed(void *ctx,
-- h2_bucket_beam *beam, apr_off_t length)
-+static void mst_stream_output_consumed(void *ctx, h2_bucket_beam *beam, apr_off_t length)
- {
-- h2_stream *stream = ctx;
-- h2_task *task = stream->task;
--
-- if (length > 0 && task && task->assigned) {
-- h2_req_engine_out_consumed(task->assigned, task->c, length);
-- }
- }
-
--static void stream_input_ev(void *ctx, h2_bucket_beam *beam)
-+static void mst_stream_input_ev(void *ctx, h2_bucket_beam *beam)
- {
- h2_stream *stream = ctx;
- h2_mplx *m = stream->session->mplx;
- apr_atomic_set32(&m->event_pending, 1);
- }
-
--static void stream_input_consumed(void *ctx, h2_bucket_beam *beam, apr_off_t length)
-+static void m_stream_input_consumed(void *ctx, h2_bucket_beam *beam, apr_off_t length)
- {
- h2_stream_in_consumed(ctx, length);
- }
-
--static void stream_joined(h2_mplx *m, h2_stream *stream)
-+static void ms_stream_joined(h2_mplx *m, h2_stream *stream)
- {
-- ap_assert(!stream->task || stream->task->worker_done);
-+ ap_assert(!h2_task_has_started(stream->task) || stream->task->worker_done);
-
-+ h2_ififo_remove(m->readyq, stream->id);
- h2_ihash_remove(m->shold, stream->id);
- h2_ihash_add(m->spurge, stream);
- }
-
--static void stream_cleanup(h2_mplx *m, h2_stream *stream)
-+static void m_stream_cleanup(h2_mplx *m, h2_stream *stream)
- {
- ap_assert(stream->state == H2_SS_CLEANUP);
-
-@@ -128,15 +133,16 @@
-
- h2_ihash_remove(m->streams, stream->id);
- h2_iq_remove(m->q, stream->id);
-- h2_ififo_remove(m->readyq, stream->id);
-- h2_ihash_add(m->shold, stream);
-
-- if (!stream->task || stream->task->worker_done) {
-- stream_joined(m, stream);
-+ if (!h2_task_has_started(stream->task) || stream->task->done_done) {
-+ ms_stream_joined(m, stream);
- }
-- else if (stream->task) {
-- stream->task->c->aborted = 1;
-- apr_thread_cond_broadcast(m->task_thawed);
-+ else {
-+ h2_ififo_remove(m->readyq, stream->id);
-+ h2_ihash_add(m->shold, stream);
-+ if (stream->task) {
-+ stream->task->c->aborted = 1;
-+ }
- }
- }
-
-@@ -151,29 +157,23 @@
- * their HTTP/1 cousins, the separate allocator seems to work better
- * than protecting a shared h2_session one with an own lock.
- */
--h2_mplx *h2_mplx_create(conn_rec *c, apr_pool_t *parent,
-- const h2_config *conf,
-- h2_workers *workers)
-+h2_mplx *h2_mplx_m_create(conn_rec *c, server_rec *s, apr_pool_t *parent,
-+ h2_workers *workers)
- {
- apr_status_t status = APR_SUCCESS;
- apr_allocator_t *allocator;
- apr_thread_mutex_t *mutex;
- h2_mplx *m;
-- h2_ctx *ctx = h2_ctx_get(c, 0);
-- ap_assert(conf);
-
- m = apr_pcalloc(parent, sizeof(h2_mplx));
- if (m) {
- m->id = c->id;
- m->c = c;
-- m->s = (ctx? h2_ctx_server_get(ctx) : NULL);
-- if (!m->s) {
-- m->s = c->base_server;
-- }
-+ m->s = s;
-
- /* We create a pool with its own allocator to be used for
-- * processing slave connections. This is the only way to have the
-- * processing independant of its parent pool in the sense that it
-+ * processing secondary connections. This is the only way to have the
-+ * processing independent of its parent pool in the sense that it
- * can work in another thread. Also, the new allocator needs its own
- * mutex to synchronize sub-pools.
- */
-@@ -204,17 +204,10 @@
- return NULL;
- }
-
-- status = apr_thread_cond_create(&m->task_thawed, m->pool);
-- if (status != APR_SUCCESS) {
-- apr_pool_destroy(m->pool);
-- return NULL;
-- }
--
-- m->max_streams = h2_config_geti(conf, H2_CONF_MAX_STREAMS);
-- m->stream_max_mem = h2_config_geti(conf, H2_CONF_STREAM_MAX_MEM);
-+ m->max_streams = h2_config_sgeti(s, H2_CONF_MAX_STREAMS);
-+ m->stream_max_mem = h2_config_sgeti(s, H2_CONF_STREAM_MAX_MEM);
-
- m->streams = h2_ihash_create(m->pool, offsetof(h2_stream,id));
-- m->sredo = h2_ihash_create(m->pool, offsetof(h2_stream,id));
- m->shold = h2_ihash_create(m->pool, offsetof(h2_stream,id));
- m->spurge = h2_ihash_create(m->pool, offsetof(h2_stream,id));
- m->q = h2_iq_create(m->pool, m->max_streams);
-@@ -228,19 +221,15 @@
- m->workers = workers;
- m->max_active = workers->max_workers;
- m->limit_active = 6; /* the original h1 max parallel connections */
-- m->last_limit_change = m->last_idle_block = apr_time_now();
-- m->limit_change_interval = apr_time_from_msec(100);
--
-- m->spare_slaves = apr_array_make(m->pool, 10, sizeof(conn_rec*));
-+ m->last_mood_change = apr_time_now();
-+ m->mood_update_interval = apr_time_from_msec(100);
-
-- m->ngn_shed = h2_ngn_shed_create(m->pool, m->c, m->max_streams,
-- m->stream_max_mem);
-- h2_ngn_shed_set_ctx(m->ngn_shed , m);
-+ m->spare_secondary = apr_array_make(m->pool, 10, sizeof(conn_rec*));
- }
- return m;
- }
-
--int h2_mplx_shutdown(h2_mplx *m)
-+int h2_mplx_m_shutdown(h2_mplx *m)
- {
- int max_stream_started = 0;
-
-@@ -254,7 +243,7 @@
- return max_stream_started;
- }
-
--static int input_consumed_signal(h2_mplx *m, h2_stream *stream)
-+static int m_input_consumed_signal(h2_mplx *m, h2_stream *stream)
- {
- if (stream->input) {
- return h2_beam_report_consumption(stream->input);
-@@ -262,12 +251,12 @@
- return 0;
- }
-
--static int report_consumption_iter(void *ctx, void *val)
-+static int m_report_consumption_iter(void *ctx, void *val)
- {
- h2_stream *stream = val;
- h2_mplx *m = ctx;
-
-- input_consumed_signal(m, stream);
-+ m_input_consumed_signal(m, stream);
- if (stream->state == H2_SS_CLOSED_L
- && (!stream->task || stream->task->worker_done)) {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c,
-@@ -278,7 +267,7 @@
- return 1;
- }
-
--static int output_consumed_signal(h2_mplx *m, h2_task *task)
-+static int s_output_consumed_signal(h2_mplx *m, h2_task *task)
- {
- if (task->output.beam) {
- return h2_beam_report_consumption(task->output.beam);
-@@ -286,7 +275,7 @@
- return 0;
- }
-
--static int stream_destroy_iter(void *ctx, void *val)
-+static int m_stream_destroy_iter(void *ctx, void *val)
- {
- h2_mplx *m = ctx;
- h2_stream *stream = val;
-@@ -296,7 +285,7 @@
-
- if (stream->input) {
- /* Process outstanding events before destruction */
-- input_consumed_signal(m, stream);
-+ m_input_consumed_signal(m, stream);
- h2_beam_log(stream->input, m->c, APLOG_TRACE2, "stream_destroy");
- h2_beam_destroy(stream->input);
- stream->input = NULL;
-@@ -304,12 +293,12 @@
-
- if (stream->task) {
- h2_task *task = stream->task;
-- conn_rec *slave;
-- int reuse_slave = 0;
-+ conn_rec *secondary;
-+ int reuse_secondary = 0;
-
- stream->task = NULL;
-- slave = task->c;
-- if (slave) {
-+ secondary = task->c;
-+ if (secondary) {
- /* On non-serialized requests, the IO logging has not accounted for any
- * meta data send over the network: response headers and h2 frame headers. we
- * counted this on the stream and need to add this now.
-@@ -318,26 +307,25 @@
- if (task->request && !task->request->serialize && h2_task_logio_add_bytes_out) {
- apr_off_t unaccounted = stream->out_frame_octets - stream->out_data_octets;
- if (unaccounted > 0) {
-- h2_task_logio_add_bytes_out(slave, unaccounted);
-+ h2_task_logio_add_bytes_out(secondary, unaccounted);
- }
- }
-
-- if (m->s->keep_alive_max == 0 || slave->keepalives < m->s->keep_alive_max) {
-- reuse_slave = ((m->spare_slaves->nelts < (m->limit_active * 3 / 2))
-- && !task->rst_error);
-+ if (m->s->keep_alive_max == 0 || secondary->keepalives < m->s->keep_alive_max) {
-+ reuse_secondary = ((m->spare_secondary->nelts < (m->limit_active * 3 / 2))
-+ && !task->rst_error);
- }
-
-- task->c = NULL;
-- if (reuse_slave) {
-+ if (reuse_secondary) {
- h2_beam_log(task->output.beam, m->c, APLOG_DEBUG,
-- APLOGNO(03385) "h2_task_destroy, reuse slave");
-+ APLOGNO(03385) "h2_task_destroy, reuse secondary");
- h2_task_destroy(task);
-- APR_ARRAY_PUSH(m->spare_slaves, conn_rec*) = slave;
-+ APR_ARRAY_PUSH(m->spare_secondary, conn_rec*) = secondary;
- }
- else {
- h2_beam_log(task->output.beam, m->c, APLOG_TRACE1,
-- "h2_task_destroy, destroy slave");
-- h2_slave_destroy(slave);
-+ "h2_task_destroy, destroy secondary");
-+ h2_secondary_destroy(secondary);
- }
- }
- }
-@@ -345,11 +333,11 @@
- return 0;
- }
-
--static void purge_streams(h2_mplx *m, int lock)
-+static void m_purge_streams(h2_mplx *m, int lock)
- {
- if (!h2_ihash_empty(m->spurge)) {
- H2_MPLX_ENTER_MAYBE(m, lock);
-- while (!h2_ihash_iter(m->spurge, stream_destroy_iter, m)) {
-+ while (!h2_ihash_iter(m->spurge, m_stream_destroy_iter, m)) {
- /* repeat until empty */
- }
- H2_MPLX_LEAVE_MAYBE(m, lock);
-@@ -361,13 +349,13 @@
- void *ctx;
- } stream_iter_ctx_t;
-
--static int stream_iter_wrap(void *ctx, void *stream)
-+static int m_stream_iter_wrap(void *ctx, void *stream)
- {
- stream_iter_ctx_t *x = ctx;
- return x->cb(stream, x->ctx);
- }
-
--apr_status_t h2_mplx_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx)
-+apr_status_t h2_mplx_m_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx)
- {
- stream_iter_ctx_t x;
-
-@@ -375,13 +363,13 @@
-
- x.cb = cb;
- x.ctx = ctx;
-- h2_ihash_iter(m->streams, stream_iter_wrap, &x);
-+ h2_ihash_iter(m->streams, m_stream_iter_wrap, &x);
-
- H2_MPLX_LEAVE(m);
- return APR_SUCCESS;
- }
-
--static int report_stream_iter(void *ctx, void *val) {
-+static int m_report_stream_iter(void *ctx, void *val) {
- h2_mplx *m = ctx;
- h2_stream *stream = val;
- h2_task *task = stream->task;
-@@ -394,10 +382,10 @@
- if (task) {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, /* NO APLOGNO */
- H2_STRM_MSG(stream, "->03198: %s %s %s"
-- "[started=%d/done=%d/frozen=%d]"),
-+ "[started=%d/done=%d]"),
- task->request->method, task->request->authority,
- task->request->path, task->worker_started,
-- task->worker_done, task->frozen);
-+ task->worker_done);
- }
- else {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, /* NO APLOGNO */
-@@ -406,7 +394,7 @@
- return 1;
- }
-
--static int unexpected_stream_iter(void *ctx, void *val) {
-+static int m_unexpected_stream_iter(void *ctx, void *val) {
- h2_mplx *m = ctx;
- h2_stream *stream = val;
- ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, /* NO APLOGNO */
-@@ -415,7 +403,7 @@
- return 1;
- }
-
--static int stream_cancel_iter(void *ctx, void *val) {
-+static int m_stream_cancel_iter(void *ctx, void *val) {
- h2_mplx *m = ctx;
- h2_stream *stream = val;
-
-@@ -429,14 +417,14 @@
- h2_stream_rst(stream, H2_ERR_NO_ERROR);
- /* All connection data has been sent, simulate cleanup */
- h2_stream_dispatch(stream, H2_SEV_EOS_SENT);
-- stream_cleanup(m, stream);
-+ m_stream_cleanup(m, stream);
- return 0;
- }
-
--void h2_mplx_release_and_join(h2_mplx *m, apr_thread_cond_t *wait)
-+void h2_mplx_m_release_and_join(h2_mplx *m, apr_thread_cond_t *wait)
- {
- apr_status_t status;
-- int i, wait_secs = 60;
-+ int i, wait_secs = 60, old_aborted;
-
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
- "h2_mplx(%ld): start release", m->id);
-@@ -447,15 +435,23 @@
-
- H2_MPLX_ENTER_ALWAYS(m);
-
-+ /* While really terminating any secondary connections, treat the master
-+ * connection as aborted. It's not as if we could send any more data
-+ * at this point. */
-+ old_aborted = m->c->aborted;
-+ m->c->aborted = 1;
-+
- /* How to shut down a h2 connection:
- * 1. cancel all streams still active */
-- while (!h2_ihash_iter(m->streams, stream_cancel_iter, m)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-+ "h2_mplx(%ld): release, %d/%d/%d streams (total/hold/purge), %d active tasks",
-+ m->id, (int)h2_ihash_count(m->streams),
-+ (int)h2_ihash_count(m->shold), (int)h2_ihash_count(m->spurge), m->tasks_active);
-+ while (!h2_ihash_iter(m->streams, m_stream_cancel_iter, m)) {
- /* until empty */
- }
-
-- /* 2. terminate ngn_shed, no more streams
-- * should be scheduled or in the active set */
-- h2_ngn_shed_abort(m->ngn_shed);
-+ /* 2. no more streams should be scheduled or in the active set */
- ap_assert(h2_ihash_empty(m->streams));
- ap_assert(h2_iq_empty(m->q));
-
-@@ -473,65 +469,60 @@
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, APLOGNO(03198)
- "h2_mplx(%ld): waited %d sec for %d tasks",
- m->id, i*wait_secs, (int)h2_ihash_count(m->shold));
-- h2_ihash_iter(m->shold, report_stream_iter, m);
-+ h2_ihash_iter(m->shold, m_report_stream_iter, m);
- }
- }
-- ap_assert(m->tasks_active == 0);
- m->join_wait = NULL;
--
-- /* 4. close the h2_req_enginge shed */
-- h2_ngn_shed_destroy(m->ngn_shed);
-- m->ngn_shed = NULL;
--
-+
- /* 4. With all workers done, all streams should be in spurge */
-+ ap_assert(m->tasks_active == 0);
- if (!h2_ihash_empty(m->shold)) {
- ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03516)
- "h2_mplx(%ld): unexpected %d streams in hold",
- m->id, (int)h2_ihash_count(m->shold));
-- h2_ihash_iter(m->shold, unexpected_stream_iter, m);
-+ h2_ihash_iter(m->shold, m_unexpected_stream_iter, m);
- }
-
-+ m->c->aborted = old_aborted;
- H2_MPLX_LEAVE(m);
-
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-- "h2_mplx(%ld): released", m->id);
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, "h2_mplx(%ld): released", m->id);
- }
-
--apr_status_t h2_mplx_stream_cleanup(h2_mplx *m, h2_stream *stream)
-+apr_status_t h2_mplx_m_stream_cleanup(h2_mplx *m, h2_stream *stream)
- {
- H2_MPLX_ENTER(m);
-
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
- H2_STRM_MSG(stream, "cleanup"));
-- stream_cleanup(m, stream);
-+ m_stream_cleanup(m, stream);
-
- H2_MPLX_LEAVE(m);
- return APR_SUCCESS;
- }
-
--h2_stream *h2_mplx_stream_get(h2_mplx *m, int id)
-+h2_stream *h2_mplx_t_stream_get(h2_mplx *m, h2_task *task)
- {
- h2_stream *s = NULL;
-
- H2_MPLX_ENTER_ALWAYS(m);
-
-- s = h2_ihash_get(m->streams, id);
-+ s = h2_ihash_get(m->streams, task->stream_id);
-
- H2_MPLX_LEAVE(m);
- return s;
- }
-
--static void output_produced(void *ctx, h2_bucket_beam *beam, apr_off_t bytes)
-+static void mst_output_produced(void *ctx, h2_bucket_beam *beam, apr_off_t bytes)
- {
- h2_stream *stream = ctx;
- h2_mplx *m = stream->session->mplx;
-
-- check_data_for(m, stream, 1);
-+ mst_check_data_for(m, stream, 0);
- }
-
--static apr_status_t out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam)
-+static apr_status_t t_out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam)
- {
-- apr_status_t status = APR_SUCCESS;
- h2_stream *stream = h2_ihash_get(m->streams, stream_id);
-
- if (!stream || !stream->task || m->aborted) {
-@@ -542,26 +533,26 @@
- stream->output = beam;
-
- if (APLOGctrace2(m->c)) {
-- h2_beam_log(beam, m->c, APLOG_TRACE2, "out_open");
-+ h2_beam_log(beam, stream->task->c, APLOG_TRACE2, "out_open");
- }
- else {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, m->c,
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->task->c,
- "h2_mplx(%s): out open", stream->task->id);
- }
-
-- h2_beam_on_consumed(stream->output, NULL, stream_output_consumed, stream);
-- h2_beam_on_produced(stream->output, output_produced, stream);
-+ h2_beam_on_consumed(stream->output, NULL, mst_stream_output_consumed, stream);
-+ h2_beam_on_produced(stream->output, mst_output_produced, stream);
- if (stream->task->output.copy_files) {
- h2_beam_on_file_beam(stream->output, h2_beam_no_files, NULL);
- }
-
- /* we might see some file buckets in the output, see
- * if we have enough handles reserved. */
-- check_data_for(m, stream, 0);
-- return status;
-+ mst_check_data_for(m, stream, 1);
-+ return APR_SUCCESS;
- }
-
--apr_status_t h2_mplx_out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam)
-+apr_status_t h2_mplx_t_out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam)
- {
- apr_status_t status;
-
-@@ -571,14 +562,14 @@
- status = APR_ECONNABORTED;
- }
- else {
-- status = out_open(m, stream_id, beam);
-+ status = t_out_open(m, stream_id, beam);
- }
-
- H2_MPLX_LEAVE(m);
- return status;
- }
-
--static apr_status_t out_close(h2_mplx *m, h2_task *task)
-+static apr_status_t s_out_close(h2_mplx *m, h2_task *task)
- {
- apr_status_t status = APR_SUCCESS;
- h2_stream *stream;
-@@ -595,17 +586,17 @@
- return APR_ECONNABORTED;
- }
-
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, m->c,
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, task->c,
- "h2_mplx(%s): close", task->id);
- status = h2_beam_close(task->output.beam);
-- h2_beam_log(task->output.beam, m->c, APLOG_TRACE2, "out_close");
-- output_consumed_signal(m, task);
-- check_data_for(m, stream, 0);
-+ h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "out_close");
-+ s_output_consumed_signal(m, task);
-+ mst_check_data_for(m, stream, 1);
- return status;
- }
-
--apr_status_t h2_mplx_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
-- apr_thread_cond_t *iowait)
-+apr_status_t h2_mplx_m_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
-+ apr_thread_cond_t *iowait)
- {
- apr_status_t status;
-
-@@ -614,12 +605,12 @@
- if (m->aborted) {
- status = APR_ECONNABORTED;
- }
-- else if (h2_mplx_has_master_events(m)) {
-+ else if (h2_mplx_m_has_master_events(m)) {
- status = APR_SUCCESS;
- }
- else {
-- purge_streams(m, 0);
-- h2_ihash_iter(m->streams, report_consumption_iter, m);
-+ m_purge_streams(m, 0);
-+ h2_ihash_iter(m->streams, m_report_consumption_iter, m);
- m->added_output = iowait;
- status = apr_thread_cond_timedwait(m->added_output, m->lock, timeout);
- if (APLOGctrace2(m->c)) {
-@@ -634,19 +625,27 @@
- return status;
- }
-
--static void check_data_for(h2_mplx *m, h2_stream *stream, int lock)
-+static void mst_check_data_for(h2_mplx *m, h2_stream *stream, int mplx_is_locked)
- {
-+ /* If m->lock is already held, we must release during h2_ififo_push()
-+ * which can wait on its not_full condition, causing a deadlock because
-+ * no one would then be able to acquire m->lock to empty the fifo.
-+ */
-+ H2_MPLX_LEAVE_MAYBE(m, mplx_is_locked);
- if (h2_ififo_push(m->readyq, stream->id) == APR_SUCCESS) {
-+ H2_MPLX_ENTER_ALWAYS(m);
- apr_atomic_set32(&m->event_pending, 1);
-- H2_MPLX_ENTER_MAYBE(m, lock);
- if (m->added_output) {
- apr_thread_cond_signal(m->added_output);
- }
-- H2_MPLX_LEAVE_MAYBE(m, lock);
-+ H2_MPLX_LEAVE_MAYBE(m, !mplx_is_locked);
-+ }
-+ else {
-+ H2_MPLX_ENTER_MAYBE(m, mplx_is_locked);
- }
- }
-
--apr_status_t h2_mplx_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx)
-+apr_status_t h2_mplx_m_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx)
- {
- apr_status_t status;
-
-@@ -666,22 +665,22 @@
- return status;
- }
-
--static void register_if_needed(h2_mplx *m)
-+static void ms_register_if_needed(h2_mplx *m, int from_master)
- {
- if (!m->aborted && !m->is_registered && !h2_iq_empty(m->q)) {
- apr_status_t status = h2_workers_register(m->workers, m);
- if (status == APR_SUCCESS) {
- m->is_registered = 1;
- }
-- else {
-+ else if (from_master) {
- ap_log_cerror(APLOG_MARK, APLOG_ERR, status, m->c, APLOGNO(10021)
- "h2_mplx(%ld): register at workers", m->id);
- }
- }
- }
-
--apr_status_t h2_mplx_process(h2_mplx *m, struct h2_stream *stream,
-- h2_stream_pri_cmp *cmp, void *ctx)
-+apr_status_t h2_mplx_m_process(h2_mplx *m, struct h2_stream *stream,
-+ h2_stream_pri_cmp *cmp, void *ctx)
- {
- apr_status_t status;
-
-@@ -695,13 +694,13 @@
- h2_ihash_add(m->streams, stream);
- if (h2_stream_is_ready(stream)) {
- /* already have a response */
-- check_data_for(m, stream, 0);
-+ mst_check_data_for(m, stream, 1);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
- H2_STRM_MSG(stream, "process, add to readyq"));
- }
- else {
- h2_iq_add(m->q, stream->id, cmp, ctx);
-- register_if_needed(m);
-+ ms_register_if_needed(m, 1);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
- H2_STRM_MSG(stream, "process, added to q"));
- }
-@@ -711,7 +710,7 @@
- return status;
- }
-
--static h2_task *next_stream_task(h2_mplx *m)
-+static h2_task *s_next_stream_task(h2_mplx *m)
- {
- h2_stream *stream;
- int sid;
-@@ -720,40 +719,39 @@
-
- stream = h2_ihash_get(m->streams, sid);
- if (stream) {
-- conn_rec *slave, **pslave;
-+ conn_rec *secondary, **psecondary;
-
-- pslave = (conn_rec **)apr_array_pop(m->spare_slaves);
-- if (pslave) {
-- slave = *pslave;
-- slave->aborted = 0;
-+ psecondary = (conn_rec **)apr_array_pop(m->spare_secondary);
-+ if (psecondary) {
-+ secondary = *psecondary;
-+ secondary->aborted = 0;
- }
- else {
-- slave = h2_slave_create(m->c, stream->id, m->pool);
-+ secondary = h2_secondary_create(m->c, stream->id, m->pool);
- }
-
- if (!stream->task) {
--
- if (sid > m->max_stream_started) {
- m->max_stream_started = sid;
- }
- if (stream->input) {
-- h2_beam_on_consumed(stream->input, stream_input_ev,
-- stream_input_consumed, stream);
-+ h2_beam_on_consumed(stream->input, mst_stream_input_ev,
-+ m_stream_input_consumed, stream);
- }
-
-- stream->task = h2_task_create(slave, stream->id,
-+ stream->task = h2_task_create(secondary, stream->id,
- stream->request, m, stream->input,
- stream->session->s->timeout,
- m->stream_max_mem);
- if (!stream->task) {
-- ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, slave,
-+ ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, secondary,
- H2_STRM_LOG(APLOGNO(02941), stream,
- "create task"));
- return NULL;
- }
--
- }
-
-+ stream->task->started_at = apr_time_now();
- ++m->tasks_active;
- return stream->task;
- }
-@@ -761,7 +759,7 @@
- return NULL;
- }
-
--apr_status_t h2_mplx_pop_task(h2_mplx *m, h2_task **ptask)
-+apr_status_t h2_mplx_s_pop_task(h2_mplx *m, h2_task **ptask)
- {
- apr_status_t rv = APR_EOF;
-
-@@ -777,7 +775,7 @@
- rv = APR_EOF;
- }
- else {
-- *ptask = next_stream_task(m);
-+ *ptask = s_next_stream_task(m);
- rv = (*ptask != NULL && !h2_iq_empty(m->q))? APR_EAGAIN : APR_SUCCESS;
- }
- if (APR_EAGAIN != rv) {
-@@ -787,127 +785,87 @@
- return rv;
- }
-
--static void task_done(h2_mplx *m, h2_task *task, h2_req_engine *ngn)
-+static void s_task_done(h2_mplx *m, h2_task *task)
- {
- h2_stream *stream;
-
-- if (task->frozen) {
-- /* this task was handed over to an engine for processing
-- * and the original worker has finished. That means the
-- * engine may start processing now. */
-- h2_task_thaw(task);
-- apr_thread_cond_broadcast(m->task_thawed);
-- return;
-- }
--
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c,
- "h2_mplx(%ld): task(%s) done", m->id, task->id);
-- out_close(m, task);
--
-- if (ngn) {
-- apr_off_t bytes = 0;
-- h2_beam_send(task->output.beam, NULL, APR_NONBLOCK_READ);
-- bytes += h2_beam_get_buffered(task->output.beam);
-- if (bytes > 0) {
-- /* we need to report consumed and current buffered output
-- * to the engine. The request will be streamed out or cancelled,
-- * no more data is coming from it and the engine should update
-- * its calculations before we destroy this information. */
-- h2_req_engine_out_consumed(ngn, task->c, bytes);
-- }
-- }
--
-- if (task->engine) {
-- if (!m->aborted && !task->c->aborted
-- && !h2_req_engine_is_shutdown(task->engine)) {
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, APLOGNO(10022)
-- "h2_mplx(%ld): task(%s) has not-shutdown "
-- "engine(%s)", m->id, task->id,
-- h2_req_engine_get_id(task->engine));
-- }
-- h2_ngn_shed_done_ngn(m->ngn_shed, task->engine);
-- }
-+ s_out_close(m, task);
-
- task->worker_done = 1;
- task->done_at = apr_time_now();
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, task->c,
- "h2_mplx(%s): request done, %f ms elapsed", task->id,
- (task->done_at - task->started_at) / 1000.0);
-
-- if (task->started_at > m->last_idle_block) {
-- /* this task finished without causing an 'idle block', e.g.
-- * a block by flow control.
-- */
-- if (task->done_at- m->last_limit_change >= m->limit_change_interval
-- && m->limit_active < m->max_active) {
-- /* Well behaving stream, allow it more workers */
-- m->limit_active = H2MIN(m->limit_active * 2,
-- m->max_active);
-- m->last_limit_change = task->done_at;
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-- "h2_mplx(%ld): increase worker limit to %d",
-- m->id, m->limit_active);
-- }
-+ if (task->c && !task->c->aborted && task->started_at > m->last_mood_change) {
-+ s_mplx_be_happy(m, task);
- }
-
-+ ap_assert(task->done_done == 0);
-+
- stream = h2_ihash_get(m->streams, task->stream_id);
- if (stream) {
- /* stream not done yet. */
-- if (!m->aborted && h2_ihash_get(m->sredo, stream->id)) {
-+ if (!m->aborted && task->redo) {
- /* reset and schedule again */
- h2_task_redo(task);
-- h2_ihash_remove(m->sredo, stream->id);
- h2_iq_add(m->q, stream->id, NULL, NULL);
-+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c,
-+ H2_STRM_MSG(stream, "redo, added to q"));
- }
- else {
- /* stream not cleaned up, stay around */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
-+ task->done_done = 1;
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, task->c,
- H2_STRM_MSG(stream, "task_done, stream open"));
- if (stream->input) {
- h2_beam_leave(stream->input);
- }
-
- /* more data will not arrive, resume the stream */
-- check_data_for(m, stream, 0);
-+ mst_check_data_for(m, stream, 1);
- }
- }
- else if ((stream = h2_ihash_get(m->shold, task->stream_id)) != NULL) {
- /* stream is done, was just waiting for this. */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
-+ task->done_done = 1;
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, task->c,
- H2_STRM_MSG(stream, "task_done, in hold"));
- if (stream->input) {
- h2_beam_leave(stream->input);
- }
-- stream_joined(m, stream);
-+ ms_stream_joined(m, stream);
- }
- else if ((stream = h2_ihash_get(m->spurge, task->stream_id)) != NULL) {
-- ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c,
-+ ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, task->c,
- H2_STRM_LOG(APLOGNO(03517), stream, "already in spurge"));
- ap_assert("stream should not be in spurge" == NULL);
- }
- else {
-- ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03518)
-+ ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, task->c, APLOGNO(03518)
- "h2_mplx(%s): task_done, stream not found",
- task->id);
- ap_assert("stream should still be available" == NULL);
- }
- }
-
--void h2_mplx_task_done(h2_mplx *m, h2_task *task, h2_task **ptask)
-+void h2_mplx_s_task_done(h2_mplx *m, h2_task *task, h2_task **ptask)
- {
- H2_MPLX_ENTER_ALWAYS(m);
-
-- task_done(m, task, NULL);
- --m->tasks_active;
-+ s_task_done(m, task);
-
- if (m->join_wait) {
- apr_thread_cond_signal(m->join_wait);
- }
- if (ptask) {
- /* caller wants another task */
-- *ptask = next_stream_task(m);
-+ *ptask = s_next_stream_task(m);
- }
-- register_if_needed(m);
-+ ms_register_if_needed(m, 0);
-
- H2_MPLX_LEAVE(m);
- }
-@@ -916,94 +874,161 @@
- * h2_mplx DoS protection
- ******************************************************************************/
-
--static int latest_repeatable_unsubmitted_iter(void *data, void *val)
-+static int m_timed_out_busy_iter(void *data, void *val)
- {
- stream_iter_ctx *ctx = data;
- h2_stream *stream = val;
--
-- if (stream->task && !stream->task->worker_done
-- && h2_task_can_redo(stream->task)
-- && !h2_ihash_get(ctx->m->sredo, stream->id)) {
-- if (!h2_stream_is_ready(stream)) {
-- /* this task occupies a worker, the response has not been submitted
-- * yet, not been cancelled and it is a repeatable request
-- * -> it can be re-scheduled later */
-- if (!ctx->stream
-- || (ctx->stream->task->started_at < stream->task->started_at)) {
-- /* we did not have one or this one was started later */
-- ctx->stream = stream;
-- }
-- }
-+ if (h2_task_has_started(stream->task) && !stream->task->worker_done
-+ && (ctx->now - stream->task->started_at) > stream->task->timeout) {
-+ /* timed out stream occupying a worker, found */
-+ ctx->stream = stream;
-+ return 0;
- }
- return 1;
- }
-
--static h2_stream *get_latest_repeatable_unsubmitted_stream(h2_mplx *m)
-+static h2_stream *m_get_timed_out_busy_stream(h2_mplx *m)
- {
- stream_iter_ctx ctx;
- ctx.m = m;
- ctx.stream = NULL;
-- h2_ihash_iter(m->streams, latest_repeatable_unsubmitted_iter, &ctx);
-+ ctx.now = apr_time_now();
-+ h2_ihash_iter(m->streams, m_timed_out_busy_iter, &ctx);
- return ctx.stream;
- }
-
--static int timed_out_busy_iter(void *data, void *val)
-+static int m_latest_repeatable_unsubmitted_iter(void *data, void *val)
- {
- stream_iter_ctx *ctx = data;
- h2_stream *stream = val;
-- if (stream->task && !stream->task->worker_done
-- && (ctx->now - stream->task->started_at) > stream->task->timeout) {
-- /* timed out stream occupying a worker, found */
-- ctx->stream = stream;
-- return 0;
-+
-+ if (!stream->task) goto leave;
-+ if (!h2_task_has_started(stream->task) || stream->task->worker_done) goto leave;
-+ if (h2_stream_is_ready(stream)) goto leave;
-+ if (stream->task->redo) {
-+ ++ctx->count;
-+ goto leave;
-+ }
-+ if (h2_task_can_redo(stream->task)) {
-+ /* this task occupies a worker, the response has not been submitted
-+ * yet, not been cancelled and it is a repeatable request
-+ * -> we could redo it later */
-+ if (!ctx->stream
-+ || (ctx->stream->task->started_at < stream->task->started_at)) {
-+ /* we did not have one or this one was started later */
-+ ctx->stream = stream;
-+ }
- }
-+leave:
- return 1;
- }
-
--static h2_stream *get_timed_out_busy_stream(h2_mplx *m)
-+static apr_status_t m_assess_task_to_throttle(h2_task **ptask, h2_mplx *m)
- {
- stream_iter_ctx ctx;
-+
-+ /* count the running tasks already marked for redo and get one that could
-+ * be throttled */
-+ *ptask = NULL;
- ctx.m = m;
- ctx.stream = NULL;
-- ctx.now = apr_time_now();
-- h2_ihash_iter(m->streams, timed_out_busy_iter, &ctx);
-- return ctx.stream;
-+ ctx.count = 0;
-+ h2_ihash_iter(m->streams, m_latest_repeatable_unsubmitted_iter, &ctx);
-+ if (m->tasks_active - ctx.count > m->limit_active) {
-+ /* we are above the limit of running tasks, accounting for the ones
-+ * already throttled. */
-+ if (ctx.stream && ctx.stream->task) {
-+ *ptask = ctx.stream->task;
-+ return APR_EAGAIN;
-+ }
-+ /* above limit, be seeing no candidate for easy throttling */
-+ if (m_get_timed_out_busy_stream(m)) {
-+ /* Too many busy workers, unable to cancel enough streams
-+ * and with a busy, timed out stream, we tell the client
-+ * to go away... */
-+ return APR_TIMEUP;
-+ }
-+ }
-+ return APR_SUCCESS;
- }
-
--static apr_status_t unschedule_slow_tasks(h2_mplx *m)
-+static apr_status_t m_unschedule_slow_tasks(h2_mplx *m)
- {
-- h2_stream *stream;
-- int n;
-+ h2_task *task;
-+ apr_status_t rv;
-
- /* Try to get rid of streams that occupy workers. Look for safe requests
- * that are repeatable. If none found, fail the connection.
- */
-- n = (m->tasks_active - m->limit_active - (int)h2_ihash_count(m->sredo));
-- while (n > 0 && (stream = get_latest_repeatable_unsubmitted_stream(m))) {
-+ while (APR_EAGAIN == (rv = m_assess_task_to_throttle(&task, m))) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c,
- "h2_mplx(%s): unschedule, resetting task for redo later",
-- stream->task->id);
-- h2_task_rst(stream->task, H2_ERR_CANCEL);
-- h2_ihash_add(m->sredo, stream);
-- --n;
-+ task->id);
-+ task->redo = 1;
-+ h2_task_rst(task, H2_ERR_CANCEL);
- }
-
-- if ((m->tasks_active - h2_ihash_count(m->sredo)) > m->limit_active) {
-- h2_stream *stream = get_timed_out_busy_stream(m);
-- if (stream) {
-- /* Too many busy workers, unable to cancel enough streams
-- * and with a busy, timed out stream, we tell the client
-- * to go away... */
-- return APR_TIMEUP;
-- }
-+ return rv;
-+}
-+
-+static apr_status_t s_mplx_be_happy(h2_mplx *m, h2_task *task)
-+{
-+ apr_time_t now;
-+
-+ --m->irritations_since;
-+ now = apr_time_now();
-+ if (m->limit_active < m->max_active
-+ && (now - m->last_mood_change >= m->mood_update_interval
-+ || m->irritations_since < -m->limit_active)) {
-+ m->limit_active = H2MIN(m->limit_active * 2, m->max_active);
-+ m->last_mood_change = now;
-+ m->irritations_since = 0;
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c,
-+ "h2_mplx(%ld): mood update, increasing worker limit to %d",
-+ m->id, m->limit_active);
- }
- return APR_SUCCESS;
- }
-
--apr_status_t h2_mplx_idle(h2_mplx *m)
-+static apr_status_t m_be_annoyed(h2_mplx *m)
- {
- apr_status_t status = APR_SUCCESS;
- apr_time_t now;
-+
-+ ++m->irritations_since;
-+ now = apr_time_now();
-+ if (m->limit_active > 2 &&
-+ ((now - m->last_mood_change >= m->mood_update_interval)
-+ || (m->irritations_since >= m->limit_active))) {
-+
-+ if (m->limit_active > 16) {
-+ m->limit_active = 16;
-+ }
-+ else if (m->limit_active > 8) {
-+ m->limit_active = 8;
-+ }
-+ else if (m->limit_active > 4) {
-+ m->limit_active = 4;
-+ }
-+ else if (m->limit_active > 2) {
-+ m->limit_active = 2;
-+ }
-+ m->last_mood_change = now;
-+ m->irritations_since = 0;
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-+ "h2_mplx(%ld): mood update, decreasing worker limit to %d",
-+ m->id, m->limit_active);
-+ }
-+
-+ if (m->tasks_active > m->limit_active) {
-+ status = m_unschedule_slow_tasks(m);
-+ }
-+ return status;
-+}
-+
-+apr_status_t h2_mplx_m_idle(h2_mplx *m)
-+{
-+ apr_status_t status = APR_SUCCESS;
- apr_size_t scount;
-
- H2_MPLX_ENTER(m);
-@@ -1023,31 +1048,7 @@
- * of busy workers we allow for this connection until it
- * well behaves.
- */
-- now = apr_time_now();
-- m->last_idle_block = now;
-- if (m->limit_active > 2
-- && now - m->last_limit_change >= m->limit_change_interval) {
-- if (m->limit_active > 16) {
-- m->limit_active = 16;
-- }
-- else if (m->limit_active > 8) {
-- m->limit_active = 8;
-- }
-- else if (m->limit_active > 4) {
-- m->limit_active = 4;
-- }
-- else if (m->limit_active > 2) {
-- m->limit_active = 2;
-- }
-- m->last_limit_change = now;
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-- "h2_mplx(%ld): decrease worker limit to %d",
-- m->id, m->limit_active);
-- }
--
-- if (m->tasks_active > m->limit_active) {
-- status = unschedule_slow_tasks(m);
-- }
-+ status = m_be_annoyed(m);
- }
- else if (!h2_iq_empty(m->q)) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-@@ -1077,167 +1078,30 @@
- h2_beam_is_closed(stream->output),
- (long)h2_beam_get_buffered(stream->output));
- h2_ihash_add(m->streams, stream);
-- check_data_for(m, stream, 0);
-+ mst_check_data_for(m, stream, 1);
- stream->out_checked = 1;
- status = APR_EAGAIN;
- }
- }
- }
- }
-- register_if_needed(m);
-+ ms_register_if_needed(m, 1);
-
- H2_MPLX_LEAVE(m);
- return status;
- }
-
- /*******************************************************************************
-- * HTTP/2 request engines
-- ******************************************************************************/
--
--typedef struct {
-- h2_mplx * m;
-- h2_req_engine *ngn;
-- int streams_updated;
--} ngn_update_ctx;
--
--static int ngn_update_window(void *ctx, void *val)
--{
-- ngn_update_ctx *uctx = ctx;
-- h2_stream *stream = val;
-- if (stream->task && stream->task->assigned == uctx->ngn
-- && output_consumed_signal(uctx->m, stream->task)) {
-- ++uctx->streams_updated;
-- }
-- return 1;
--}
--
--static apr_status_t ngn_out_update_windows(h2_mplx *m, h2_req_engine *ngn)
--{
-- ngn_update_ctx ctx;
--
-- ctx.m = m;
-- ctx.ngn = ngn;
-- ctx.streams_updated = 0;
-- h2_ihash_iter(m->streams, ngn_update_window, &ctx);
--
-- return ctx.streams_updated? APR_SUCCESS : APR_EAGAIN;
--}
--
--apr_status_t h2_mplx_req_engine_push(const char *ngn_type,
-- request_rec *r,
-- http2_req_engine_init *einit)
--{
-- apr_status_t status;
-- h2_mplx *m;
-- h2_task *task;
-- h2_stream *stream;
--
-- task = h2_ctx_rget_task(r);
-- if (!task) {
-- return APR_ECONNABORTED;
-- }
-- m = task->mplx;
--
-- H2_MPLX_ENTER(m);
--
-- stream = h2_ihash_get(m->streams, task->stream_id);
-- if (stream) {
-- status = h2_ngn_shed_push_request(m->ngn_shed, ngn_type, r, einit);
-- }
-- else {
-- status = APR_ECONNABORTED;
-- }
--
-- H2_MPLX_LEAVE(m);
-- return status;
--}
--
--apr_status_t h2_mplx_req_engine_pull(h2_req_engine *ngn,
-- apr_read_type_e block,
-- int capacity,
-- request_rec **pr)
--{
-- h2_ngn_shed *shed = h2_ngn_shed_get_shed(ngn);
-- h2_mplx *m = h2_ngn_shed_get_ctx(shed);
-- apr_status_t status;
-- int want_shutdown;
--
-- H2_MPLX_ENTER(m);
--
-- want_shutdown = (block == APR_BLOCK_READ);
--
-- /* Take this opportunity to update output consummation
-- * for this engine */
-- ngn_out_update_windows(m, ngn);
--
-- if (want_shutdown && !h2_iq_empty(m->q)) {
-- /* For a blocking read, check first if requests are to be
-- * had and, if not, wait a short while before doing the
-- * blocking, and if unsuccessful, terminating read.
-- */
-- status = h2_ngn_shed_pull_request(shed, ngn, capacity, 1, pr);
-- if (APR_STATUS_IS_EAGAIN(status)) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
-- "h2_mplx(%ld): start block engine pull", m->id);
-- apr_thread_cond_timedwait(m->task_thawed, m->lock,
-- apr_time_from_msec(20));
-- status = h2_ngn_shed_pull_request(shed, ngn, capacity, 1, pr);
-- }
-- }
-- else {
-- status = h2_ngn_shed_pull_request(shed, ngn, capacity,
-- want_shutdown, pr);
-- }
--
-- H2_MPLX_LEAVE(m);
-- return status;
--}
--
--void h2_mplx_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn,
-- apr_status_t status)
--{
-- h2_task *task = h2_ctx_cget_task(r_conn);
--
-- if (task) {
-- h2_mplx *m = task->mplx;
-- h2_stream *stream;
--
-- H2_MPLX_ENTER_ALWAYS(m);
--
-- stream = h2_ihash_get(m->streams, task->stream_id);
--
-- ngn_out_update_windows(m, ngn);
-- h2_ngn_shed_done_task(m->ngn_shed, ngn, task);
--
-- if (status != APR_SUCCESS && stream
-- && h2_task_can_redo(task)
-- && !h2_ihash_get(m->sredo, stream->id)) {
-- h2_ihash_add(m->sredo, stream);
-- }
--
-- if (task->engine) {
-- /* cannot report that as done until engine returns */
-- }
-- else {
-- task_done(m, task, ngn);
-- }
--
-- H2_MPLX_LEAVE(m);
-- }
--}
--
--/*******************************************************************************
- * mplx master events dispatching
- ******************************************************************************/
-
--int h2_mplx_has_master_events(h2_mplx *m)
-+int h2_mplx_m_has_master_events(h2_mplx *m)
- {
- return apr_atomic_read32(&m->event_pending) > 0;
- }
-
--apr_status_t h2_mplx_dispatch_master_events(h2_mplx *m,
-- stream_ev_callback *on_resume,
-- void *on_ctx)
-+apr_status_t h2_mplx_m_dispatch_master_events(h2_mplx *m, stream_ev_callback *on_resume,
-+ void *on_ctx)
- {
- h2_stream *stream;
- int n, id;
-@@ -1247,8 +1111,8 @@
- apr_atomic_set32(&m->event_pending, 0);
-
- /* update input windows for streams */
-- h2_ihash_iter(m->streams, report_consumption_iter, m);
-- purge_streams(m, 1);
-+ h2_ihash_iter(m->streams, m_report_consumption_iter, m);
-+ m_purge_streams(m, 1);
-
- n = h2_ififo_count(m->readyq);
- while (n > 0
-@@ -1263,13 +1127,13 @@
- return APR_SUCCESS;
- }
-
--apr_status_t h2_mplx_keep_active(h2_mplx *m, h2_stream *stream)
-+apr_status_t h2_mplx_m_keep_active(h2_mplx *m, h2_stream *stream)
- {
-- check_data_for(m, stream, 1);
-+ mst_check_data_for(m, stream, 0);
- return APR_SUCCESS;
- }
-
--int h2_mplx_awaits_data(h2_mplx *m)
-+int h2_mplx_m_awaits_data(h2_mplx *m)
- {
- int waiting = 1;
-
-@@ -1278,11 +1142,24 @@
- if (h2_ihash_empty(m->streams)) {
- waiting = 0;
- }
-- else if (!m->tasks_active && !h2_ififo_count(m->readyq)
-- && h2_iq_empty(m->q)) {
-+ else if (!m->tasks_active && !h2_ififo_count(m->readyq) && h2_iq_empty(m->q)) {
- waiting = 0;
- }
-
- H2_MPLX_LEAVE(m);
- return waiting;
- }
-+
-+apr_status_t h2_mplx_m_client_rst(h2_mplx *m, int stream_id)
-+{
-+ h2_stream *stream;
-+ apr_status_t status = APR_SUCCESS;
-+
-+ H2_MPLX_ENTER_ALWAYS(m);
-+ stream = h2_ihash_get(m->streams, stream_id);
-+ if (stream && stream->task) {
-+ status = m_be_annoyed(m);
-+ }
-+ H2_MPLX_LEAVE(m);
-+ return status;
-+}
---- a/modules/http2/h2_mplx.h
-+++ b/modules/http2/h2_mplx.h
-@@ -31,8 +31,10 @@
- * queued in the multiplexer. If a task thread tries to write more
- * data, it is blocked until space becomes available.
- *
-- * Writing input is never blocked. In order to use flow control on the input,
-- * the mplx can be polled for input data consumption.
-+ * Naming Convention:
-+ * "h2_mplx_m_" are methods only to be called by the main connection
-+ * "h2_mplx_s_" are method only to be called by a secondary connection
-+ * "h2_mplx_t_" are method only to be called by a task handler (can be master or secondary)
- */
-
- struct apr_pool_t;
-@@ -47,8 +49,6 @@
- struct apr_thread_cond_t;
- struct h2_workers;
- struct h2_iqueue;
--struct h2_ngn_shed;
--struct h2_req_engine;
-
- #include <apr_queue.h>
-
-@@ -65,7 +65,6 @@
- unsigned int is_registered; /* is registered at h2_workers */
-
- struct h2_ihash_t *streams; /* all streams currently processing */
-- struct h2_ihash_t *sredo; /* all streams that need to be re-started */
- struct h2_ihash_t *shold; /* all streams done with task ongoing */
- struct h2_ihash_t *spurge; /* all streams done, ready for destroy */
-
-@@ -79,41 +78,35 @@
- int tasks_active; /* # of tasks being processed from this mplx */
- int limit_active; /* current limit on active tasks, dynamic */
- int max_active; /* max, hard limit # of active tasks in a process */
-- apr_time_t last_idle_block; /* last time, this mplx entered IDLE while
-- * streams were ready */
-- apr_time_t last_limit_change; /* last time, worker limit changed */
-- apr_interval_time_t limit_change_interval;
-+
-+ apr_time_t last_mood_change; /* last time, we worker limit changed */
-+ apr_interval_time_t mood_update_interval; /* how frequent we update at most */
-+ int irritations_since; /* irritations (>0) or happy events (<0) since last mood change */
-
- apr_thread_mutex_t *lock;
- struct apr_thread_cond_t *added_output;
-- struct apr_thread_cond_t *task_thawed;
- struct apr_thread_cond_t *join_wait;
-
- apr_size_t stream_max_mem;
-
- apr_pool_t *spare_io_pool;
-- apr_array_header_t *spare_slaves; /* spare slave connections */
-+ apr_array_header_t *spare_secondary; /* spare secondary connections */
-
- struct h2_workers *workers;
--
-- struct h2_ngn_shed *ngn_shed;
- };
-
--
--
- /*******************************************************************************
-- * Object lifecycle and information.
-+ * From the main connection processing: h2_mplx_m_*
- ******************************************************************************/
-
--apr_status_t h2_mplx_child_init(apr_pool_t *pool, server_rec *s);
-+apr_status_t h2_mplx_m_child_init(apr_pool_t *pool, server_rec *s);
-
- /**
- * Create the multiplexer for the given HTTP2 session.
- * Implicitly has reference count 1.
- */
--h2_mplx *h2_mplx_create(conn_rec *c, apr_pool_t *master,
-- const struct h2_config *conf,
-- struct h2_workers *workers);
-+h2_mplx *h2_mplx_m_create(conn_rec *c, server_rec *s, apr_pool_t *master,
-+ struct h2_workers *workers);
-
- /**
- * Decreases the reference counter of this mplx and waits for it
-@@ -123,26 +116,14 @@
- * @param m the mplx to be released and destroyed
- * @param wait condition var to wait on for ref counter == 0
- */
--void h2_mplx_release_and_join(h2_mplx *m, struct apr_thread_cond_t *wait);
--
--apr_status_t h2_mplx_pop_task(h2_mplx *m, struct h2_task **ptask);
--
--void h2_mplx_task_done(h2_mplx *m, struct h2_task *task, struct h2_task **ptask);
-+void h2_mplx_m_release_and_join(h2_mplx *m, struct apr_thread_cond_t *wait);
-
- /**
- * Shut down the multiplexer gracefully. Will no longer schedule new streams
- * but let the ongoing ones finish normally.
- * @return the highest stream id being/been processed
- */
--int h2_mplx_shutdown(h2_mplx *m);
--
--int h2_mplx_is_busy(h2_mplx *m);
--
--/*******************************************************************************
-- * IO lifetime of streams.
-- ******************************************************************************/
--
--struct h2_stream *h2_mplx_stream_get(h2_mplx *m, int id);
-+int h2_mplx_m_shutdown(h2_mplx *m);
-
- /**
- * Notifies mplx that a stream has been completely handled on the main
-@@ -151,20 +132,16 @@
- * @param m the mplx itself
- * @param stream the stream ready for cleanup
- */
--apr_status_t h2_mplx_stream_cleanup(h2_mplx *m, struct h2_stream *stream);
-+apr_status_t h2_mplx_m_stream_cleanup(h2_mplx *m, struct h2_stream *stream);
-
- /**
- * Waits on output data from any stream in this session to become available.
- * Returns APR_TIMEUP if no data arrived in the given time.
- */
--apr_status_t h2_mplx_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
-- struct apr_thread_cond_t *iowait);
-+apr_status_t h2_mplx_m_out_trywait(h2_mplx *m, apr_interval_time_t timeout,
-+ struct apr_thread_cond_t *iowait);
-
--apr_status_t h2_mplx_keep_active(h2_mplx *m, struct h2_stream *stream);
--
--/*******************************************************************************
-- * Stream processing.
-- ******************************************************************************/
-+apr_status_t h2_mplx_m_keep_active(h2_mplx *m, struct h2_stream *stream);
-
- /**
- * Process a stream request.
-@@ -175,8 +152,8 @@
- * @param cmp the stream priority compare function
- * @param ctx context data for the compare function
- */
--apr_status_t h2_mplx_process(h2_mplx *m, struct h2_stream *stream,
-- h2_stream_pri_cmp *cmp, void *ctx);
-+apr_status_t h2_mplx_m_process(h2_mplx *m, struct h2_stream *stream,
-+ h2_stream_pri_cmp *cmp, void *ctx);
-
- /**
- * Stream priorities have changed, reschedule pending requests.
-@@ -185,7 +162,7 @@
- * @param cmp the stream priority compare function
- * @param ctx context data for the compare function
- */
--apr_status_t h2_mplx_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx);
-+apr_status_t h2_mplx_m_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx);
-
- typedef apr_status_t stream_ev_callback(void *ctx, struct h2_stream *stream);
-
-@@ -193,7 +170,7 @@
- * Check if the multiplexer has events for the master connection pending.
- * @return != 0 iff there are events pending
- */
--int h2_mplx_has_master_events(h2_mplx *m);
-+int h2_mplx_m_has_master_events(h2_mplx *m);
-
- /**
- * Dispatch events for the master connection, such as
-@@ -201,130 +178,46 @@
- * @param on_resume new output data has arrived for a suspended stream
- * @param ctx user supplied argument to invocation.
- */
--apr_status_t h2_mplx_dispatch_master_events(h2_mplx *m,
-- stream_ev_callback *on_resume,
-- void *ctx);
-+apr_status_t h2_mplx_m_dispatch_master_events(h2_mplx *m, stream_ev_callback *on_resume,
-+ void *ctx);
-
--int h2_mplx_awaits_data(h2_mplx *m);
-+int h2_mplx_m_awaits_data(h2_mplx *m);
-
- typedef int h2_mplx_stream_cb(struct h2_stream *s, void *ctx);
-
--apr_status_t h2_mplx_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx);
-+apr_status_t h2_mplx_m_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx);
-
--/*******************************************************************************
-- * Output handling of streams.
-- ******************************************************************************/
-+apr_status_t h2_mplx_m_client_rst(h2_mplx *m, int stream_id);
-
- /**
-- * Opens the output for the given stream with the specified response.
-+ * Master connection has entered idle mode.
-+ * @param m the mplx instance of the master connection
-+ * @return != SUCCESS iff connection should be terminated
- */
--apr_status_t h2_mplx_out_open(h2_mplx *mplx, int stream_id,
-- struct h2_bucket_beam *beam);
-+apr_status_t h2_mplx_m_idle(h2_mplx *m);
-
- /*******************************************************************************
-- * h2_mplx list Manipulation.
-+ * From a secondary connection processing: h2_mplx_s_*
- ******************************************************************************/
--
--/**
-- * The magic pointer value that indicates the head of a h2_mplx list
-- * @param b The mplx list
-- * @return The magic pointer value
-- */
--#define H2_MPLX_LIST_SENTINEL(b) APR_RING_SENTINEL((b), h2_mplx, link)
--
--/**
-- * Determine if the mplx list is empty
-- * @param b The list to check
-- * @return true or false
-- */
--#define H2_MPLX_LIST_EMPTY(b) APR_RING_EMPTY((b), h2_mplx, link)
--
--/**
-- * Return the first mplx in a list
-- * @param b The list to query
-- * @return The first mplx in the list
-- */
--#define H2_MPLX_LIST_FIRST(b) APR_RING_FIRST(b)
--
--/**
-- * Return the last mplx in a list
-- * @param b The list to query
-- * @return The last mplx int he list
-- */
--#define H2_MPLX_LIST_LAST(b) APR_RING_LAST(b)
--
--/**
-- * Insert a single mplx at the front of a list
-- * @param b The list to add to
-- * @param e The mplx to insert
-- */
--#define H2_MPLX_LIST_INSERT_HEAD(b, e) do { \
--h2_mplx *ap__b = (e); \
--APR_RING_INSERT_HEAD((b), ap__b, h2_mplx, link); \
--} while (0)
--
--/**
-- * Insert a single mplx at the end of a list
-- * @param b The list to add to
-- * @param e The mplx to insert
-- */
--#define H2_MPLX_LIST_INSERT_TAIL(b, e) do { \
--h2_mplx *ap__b = (e); \
--APR_RING_INSERT_TAIL((b), ap__b, h2_mplx, link); \
--} while (0)
--
--/**
-- * Get the next mplx in the list
-- * @param e The current mplx
-- * @return The next mplx
-- */
--#define H2_MPLX_NEXT(e) APR_RING_NEXT((e), link)
--/**
-- * Get the previous mplx in the list
-- * @param e The current mplx
-- * @return The previous mplx
-- */
--#define H2_MPLX_PREV(e) APR_RING_PREV((e), link)
--
--/**
-- * Remove a mplx from its list
-- * @param e The mplx to remove
-- */
--#define H2_MPLX_REMOVE(e) APR_RING_REMOVE((e), link)
-+apr_status_t h2_mplx_s_pop_task(h2_mplx *m, struct h2_task **ptask);
-+void h2_mplx_s_task_done(h2_mplx *m, struct h2_task *task, struct h2_task **ptask);
-
- /*******************************************************************************
-- * h2_mplx DoS protection
-+ * From a h2_task owner: h2_mplx_s_*
-+ * (a task is transfered from master to secondary connection and back in
-+ * its normal lifetime).
- ******************************************************************************/
-
- /**
-- * Master connection has entered idle mode.
-- * @param m the mplx instance of the master connection
-- * @return != SUCCESS iff connection should be terminated
-+ * Opens the output for the given stream with the specified response.
- */
--apr_status_t h2_mplx_idle(h2_mplx *m);
-+apr_status_t h2_mplx_t_out_open(h2_mplx *mplx, int stream_id,
-+ struct h2_bucket_beam *beam);
-
--/*******************************************************************************
-- * h2_req_engine handling
-- ******************************************************************************/
-+/**
-+ * Get the stream that belongs to the given task.
-+ */
-+struct h2_stream *h2_mplx_t_stream_get(h2_mplx *m, struct h2_task *task);
-
--typedef void h2_output_consumed(void *ctx, conn_rec *c, apr_off_t consumed);
--typedef apr_status_t h2_mplx_req_engine_init(struct h2_req_engine *engine,
-- const char *id,
-- const char *type,
-- apr_pool_t *pool,
-- apr_size_t req_buffer_size,
-- request_rec *r,
-- h2_output_consumed **pconsumed,
-- void **pbaton);
--
--apr_status_t h2_mplx_req_engine_push(const char *ngn_type,
-- request_rec *r,
-- h2_mplx_req_engine_init *einit);
--apr_status_t h2_mplx_req_engine_pull(struct h2_req_engine *ngn,
-- apr_read_type_e block,
-- int capacity,
-- request_rec **pr);
--void h2_mplx_req_engine_done(struct h2_req_engine *ngn, conn_rec *r_conn,
-- apr_status_t status);
-
- #endif /* defined(__mod_h2__h2_mplx__) */
---- a/modules/http2/h2_proxy_session.c
-+++ b/modules/http2/h2_proxy_session.c
-@@ -45,6 +45,7 @@
- unsigned int suspended : 1;
- unsigned int waiting_on_100 : 1;
- unsigned int waiting_on_ping : 1;
-+ unsigned int headers_ended : 1;
- uint32_t error_code;
-
- apr_bucket_brigade *input;
-@@ -61,7 +62,123 @@
- static void ping_arrived(h2_proxy_session *session);
- static apr_status_t check_suspended(h2_proxy_session *session);
- static void stream_resume(h2_proxy_stream *stream);
-+static apr_status_t submit_trailers(h2_proxy_stream *stream);
-
-+/*
-+ * The H2_PING connection sub-state: a state independant of the H2_SESSION state
-+ * of the connection:
-+ * - H2_PING_ST_NONE: no interference with request handling, ProxyTimeout in effect.
-+ * When entered, all suspended streams are unsuspended again.
-+ * - H2_PING_ST_AWAIT_ANY: new requests are suspended, a possibly configured "ping"
-+ * timeout is in effect. Any frame received transits to H2_PING_ST_NONE.
-+ * - H2_PING_ST_AWAIT_PING: same as above, but only a PING frame transits
-+ * to H2_PING_ST_NONE.
-+ *
-+ * An AWAIT state is entered on a new connection or when re-using a connection and
-+ * the last frame received has been some time ago. The latter sends a PING frame
-+ * and insists on an answer, the former is satisfied by any frame received from the
-+ * backend.
-+ *
-+ * This works for new connections as there is always at least one SETTINGS frame
-+ * that the backend sends. When re-using connection, we send a PING and insist on
-+ * receiving one back, as there might be frames in our connection buffers from
-+ * some time ago. Since some servers have protections against PING flooding, we
-+ * only ever have one PING unanswered.
-+ *
-+ * Requests are suspended while in a PING state, as we do not want to send data
-+ * before we can be reasonably sure that the connection is working (at least on
-+ * the h2 protocol level). This also means that the session can do blocking reads
-+ * when expecting PING answers.
-+ */
-+static void set_ping_timeout(h2_proxy_session *session)
-+{
-+ if (session->ping_timeout != -1 && session->save_timeout == -1) {
-+ apr_socket_t *socket = NULL;
-+
-+ socket = ap_get_conn_socket(session->c);
-+ if (socket) {
-+ apr_socket_timeout_get(socket, &session->save_timeout);
-+ apr_socket_timeout_set(socket, session->ping_timeout);
-+ }
-+ }
-+}
-+
-+static void unset_ping_timeout(h2_proxy_session *session)
-+{
-+ if (session->save_timeout != -1) {
-+ apr_socket_t *socket = NULL;
-+
-+ socket = ap_get_conn_socket(session->c);
-+ if (socket) {
-+ apr_socket_timeout_set(socket, session->save_timeout);
-+ session->save_timeout = -1;
-+ }
-+ }
-+}
-+
-+static void enter_ping_state(h2_proxy_session *session, h2_ping_state_t state)
-+{
-+ if (session->ping_state == state) return;
-+ switch (session->ping_state) {
-+ case H2_PING_ST_NONE:
-+ /* leaving NONE, enforce timeout, send frame maybe */
-+ if (H2_PING_ST_AWAIT_PING == state) {
-+ unset_ping_timeout(session);
-+ nghttp2_submit_ping(session->ngh2, 0, (const uint8_t *)"nevergonnagiveyouup");
-+ }
-+ set_ping_timeout(session);
-+ session->ping_state = state;
-+ break;
-+ default:
-+ /* no switching between the != NONE states */
-+ if (H2_PING_ST_NONE == state) {
-+ session->ping_state = state;
-+ unset_ping_timeout(session);
-+ ping_arrived(session);
-+ }
-+ break;
-+ }
-+}
-+
-+static void ping_new_session(h2_proxy_session *session, proxy_conn_rec *p_conn)
-+{
-+ session->save_timeout = -1;
-+ session->ping_timeout = (p_conn->worker->s->ping_timeout_set?
-+ p_conn->worker->s->ping_timeout : -1);
-+ session->ping_state = H2_PING_ST_NONE;
-+ enter_ping_state(session, H2_PING_ST_AWAIT_ANY);
-+}
-+
-+static void ping_reuse_session(h2_proxy_session *session)
-+{
-+ if (H2_PING_ST_NONE == session->ping_state) {
-+ apr_interval_time_t age = apr_time_now() - session->last_frame_received;
-+ if (age > apr_time_from_sec(1)) {
-+ enter_ping_state(session, H2_PING_ST_AWAIT_PING);
-+ }
-+ }
-+}
-+
-+static void ping_ev_frame_received(h2_proxy_session *session, const nghttp2_frame *frame)
-+{
-+ session->last_frame_received = apr_time_now();
-+ switch (session->ping_state) {
-+ case H2_PING_ST_NONE:
-+ /* nop */
-+ break;
-+ case H2_PING_ST_AWAIT_ANY:
-+ enter_ping_state(session, H2_PING_ST_NONE);
-+ break;
-+ case H2_PING_ST_AWAIT_PING:
-+ if (NGHTTP2_PING == frame->hd.type) {
-+ enter_ping_state(session, H2_PING_ST_NONE);
-+ }
-+ /* we may receive many other frames while we are waiting for the
-+ * PING answer. They may come all from our connection buffers and
-+ * say nothing about the current state of the backend. */
-+ break;
-+ }
-+}
-
- static apr_status_t proxy_session_pre_close(void *theconn)
- {
-@@ -152,7 +269,8 @@
- session->id, buffer);
- }
-
-- session->last_frame_received = apr_time_now();
-+ ping_ev_frame_received(session, frame);
-+ /* Action for frame types: */
- switch (frame->hd.type) {
- case NGHTTP2_HEADERS:
- stream = nghttp2_session_get_stream_user_data(ngh2, frame->hd.stream_id);
-@@ -193,10 +311,6 @@
- stream_resume(stream);
- break;
- case NGHTTP2_PING:
-- if (session->check_ping) {
-- session->check_ping = 0;
-- ping_arrived(session);
-- }
- break;
- case NGHTTP2_PUSH_PROMISE:
- break;
-@@ -241,7 +355,8 @@
- return 1;
- }
-
--static void process_proxy_header(h2_proxy_stream *stream, const char *n, const char *v)
-+static void process_proxy_header(apr_table_t *headers, h2_proxy_stream *stream,
-+ const char *n, const char *v)
- {
- static const struct {
- const char *name;
-@@ -262,20 +377,18 @@
- if (!dconf->preserve_host) {
- for (i = 0; transform_hdrs[i].name; ++i) {
- if (!ap_cstr_casecmp(transform_hdrs[i].name, n)) {
-- apr_table_add(r->headers_out, n,
-- (*transform_hdrs[i].func)(r, dconf, v));
-+ apr_table_add(headers, n, (*transform_hdrs[i].func)(r, dconf, v));
- return;
- }
- }
- if (!ap_cstr_casecmp("Link", n)) {
- dconf = ap_get_module_config(r->per_dir_config, &proxy_module);
-- apr_table_add(r->headers_out, n,
-- h2_proxy_link_reverse_map(r, dconf,
-- stream->real_server_uri, stream->p_server_uri, v));
-+ apr_table_add(headers, n, h2_proxy_link_reverse_map(r, dconf,
-+ stream->real_server_uri, stream->p_server_uri, v));
- return;
- }
- }
-- apr_table_add(r->headers_out, n, v);
-+ apr_table_add(headers, n, v);
- }
-
- static apr_status_t h2_proxy_stream_add_header_out(h2_proxy_stream *stream,
-@@ -299,8 +412,13 @@
- return APR_SUCCESS;
- }
-
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c,
-+ "h2_proxy_stream(%s-%d): on_header %s: %s",
-+ stream->session->id, stream->id, n, v);
- if (!h2_proxy_res_ignore_header(n, nlen)) {
- char *hname, *hvalue;
-+ apr_table_t *headers = (stream->headers_ended?
-+ stream->r->trailers_out : stream->r->headers_out);
-
- hname = apr_pstrndup(stream->pool, n, nlen);
- h2_proxy_util_camel_case_header(hname, nlen);
-@@ -309,7 +427,7 @@
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c,
- "h2_proxy_stream(%s-%d): got header %s: %s",
- stream->session->id, stream->id, hname, hvalue);
-- process_proxy_header(stream, hname, hvalue);
-+ process_proxy_header(headers, stream, hname, hvalue);
- }
- return APR_SUCCESS;
- }
-@@ -374,6 +492,7 @@
- server_name, portstr)
- );
- }
-+ if (r->status >= 200) stream->headers_ended = 1;
-
- if (APLOGrtrace2(stream->r)) {
- ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, stream->r,
-@@ -429,12 +548,6 @@
- stream_id, NGHTTP2_STREAM_CLOSED);
- return NGHTTP2_ERR_STREAM_CLOSING;
- }
-- if (stream->standalone) {
-- nghttp2_session_consume(ngh2, stream_id, len);
-- ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, stream->r,
-- "h2_proxy_session(%s): stream %d, win_update %d bytes",
-- session->id, stream_id, (int)len);
-- }
- return 0;
- }
-
-@@ -493,12 +606,12 @@
- stream = nghttp2_session_get_stream_user_data(ngh2, stream_id);
- if (!stream) {
- ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(03361)
-- "h2_proxy_stream(%s): data_read, stream %d not found",
-- stream->session->id, stream_id);
-+ "h2_proxy_stream(NULL): data_read, stream %d not found",
-+ stream_id);
- return NGHTTP2_ERR_CALLBACK_FAILURE;
- }
-
-- if (stream->session->check_ping) {
-+ if (stream->session->ping_state != H2_PING_ST_NONE) {
- /* suspend until we hear from the other side */
- stream->waiting_on_ping = 1;
- status = APR_EAGAIN;
-@@ -553,9 +666,14 @@
- stream->data_sent += readlen;
- ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(03468)
- "h2_proxy_stream(%d): request DATA %ld, %ld"
-- " total, flags=%d",
-- stream->id, (long)readlen, (long)stream->data_sent,
-+ " total, flags=%d", stream->id, (long)readlen, (long)stream->data_sent,
- (int)*data_flags);
-+ if ((*data_flags & NGHTTP2_DATA_FLAG_EOF) && !apr_is_empty_table(stream->r->trailers_in)) {
-+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(10179)
-+ "h2_proxy_stream(%d): submit trailers", stream->id);
-+ *data_flags |= NGHTTP2_DATA_FLAG_NO_END_STREAM;
-+ submit_trailers(stream);
-+ }
- return readlen;
- }
- else if (APR_STATUS_IS_EAGAIN(status)) {
-@@ -641,23 +759,20 @@
-
- nghttp2_option_new(&option);
- nghttp2_option_set_peer_max_concurrent_streams(option, 100);
-- nghttp2_option_set_no_auto_window_update(option, 1);
-+ nghttp2_option_set_no_auto_window_update(option, 0);
-
- nghttp2_session_client_new2(&session->ngh2, cbs, session, option);
-
- nghttp2_option_del(option);
- nghttp2_session_callbacks_del(cbs);
-
-+ ping_new_session(session, p_conn);
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03362)
- "setup session for %s", p_conn->hostname);
- }
- else {
- h2_proxy_session *session = p_conn->data;
-- apr_interval_time_t age = apr_time_now() - session->last_frame_received;
-- if (age > apr_time_from_sec(1)) {
-- session->check_ping = 1;
-- nghttp2_submit_ping(session->ngh2, 0, (const uint8_t *)"nevergonnagiveyouup");
-- }
-+ ping_reuse_session(session);
- }
- return p_conn->data;
- }
-@@ -740,6 +855,8 @@
- stream->real_server_uri = apr_psprintf(stream->pool, "%s://%s", scheme, authority);
- stream->p_server_uri = apr_psprintf(stream->pool, "%s://%s", puri.scheme, authority);
- path = apr_uri_unparse(stream->pool, &puri, APR_URI_UNP_OMITSITEPART);
-+
-+
- h2_proxy_req_make(stream->req, stream->pool, r->method, scheme,
- authority, path, r->headers_in);
-
-@@ -826,6 +943,16 @@
- return APR_EGENERAL;
- }
-
-+static apr_status_t submit_trailers(h2_proxy_stream *stream)
-+{
-+ h2_proxy_ngheader *hd;
-+ int rv;
-+
-+ hd = h2_proxy_util_nghd_make(stream->pool, stream->r->trailers_in);
-+ rv = nghttp2_submit_trailer(stream->session->ngh2, stream->id, hd->nv, hd->nvlen);
-+ return rv == 0? APR_SUCCESS: APR_EGENERAL;
-+}
-+
- static apr_status_t feed_brigade(h2_proxy_session *session, apr_bucket_brigade *bb)
- {
- apr_status_t status = APR_SUCCESS;
-@@ -882,7 +1009,7 @@
- apr_socket_t *socket = NULL;
- apr_time_t save_timeout = -1;
-
-- if (block) {
-+ if (block && timeout > 0) {
- socket = ap_get_conn_socket(session->c);
- if (socket) {
- apr_socket_timeout_get(socket, &save_timeout);
-@@ -954,6 +1081,14 @@
- dispatch_event(session, H2_PROXYS_EV_STREAM_RESUMED, 0, NULL);
- }
-
-+static int is_waiting_for_backend(h2_proxy_session *session)
-+{
-+ return ((session->ping_state != H2_PING_ST_NONE)
-+ || ((session->suspended->nelts <= 0)
-+ && !nghttp2_session_want_write(session->ngh2)
-+ && nghttp2_session_want_read(session->ngh2)));
-+}
-+
- static apr_status_t check_suspended(h2_proxy_session *session)
- {
- h2_proxy_stream *stream;
-@@ -1408,7 +1543,22 @@
- break;
-
- case H2_PROXYS_ST_WAIT:
-- if (check_suspended(session) == APR_EAGAIN) {
-+ if (is_waiting_for_backend(session)) {
-+ /* we can do a blocking read with the default timeout (as
-+ * configured via ProxyTimeout in our socket. There is
-+ * nothing we want to send or check until we get more data
-+ * from the backend. */
-+ status = h2_proxy_session_read(session, 1, 0);
-+ if (status == APR_SUCCESS) {
-+ have_read = 1;
-+ dispatch_event(session, H2_PROXYS_EV_DATA_READ, 0, NULL);
-+ }
-+ else {
-+ dispatch_event(session, H2_PROXYS_EV_CONN_ERROR, status, NULL);
-+ return status;
-+ }
-+ }
-+ else if (check_suspended(session) == APR_EAGAIN) {
- /* no stream has become resumed. Do a blocking read with
- * ever increasing timeouts... */
- if (session->wait_timeout < 25) {
-@@ -1423,7 +1573,7 @@
- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c,
- APLOGNO(03365)
- "h2_proxy_session(%s): WAIT read, timeout=%fms",
-- session->id, (float)session->wait_timeout/1000.0);
-+ session->id, session->wait_timeout/1000.0);
- if (status == APR_SUCCESS) {
- have_read = 1;
- dispatch_event(session, H2_PROXYS_EV_DATA_READ, 0, NULL);
-@@ -1543,42 +1693,3 @@
- int updated;
- } win_update_ctx;
-
--static int win_update_iter(void *udata, void *val)
--{
-- win_update_ctx *ctx = udata;
-- h2_proxy_stream *stream = val;
--
-- if (stream->r && stream->r->connection == ctx->c) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, ctx->session->c,
-- "h2_proxy_session(%s-%d): win_update %ld bytes",
-- ctx->session->id, (int)stream->id, (long)ctx->bytes);
-- nghttp2_session_consume(ctx->session->ngh2, stream->id, ctx->bytes);
-- ctx->updated = 1;
-- return 0;
-- }
-- return 1;
--}
--
--
--void h2_proxy_session_update_window(h2_proxy_session *session,
-- conn_rec *c, apr_off_t bytes)
--{
-- if (!h2_proxy_ihash_empty(session->streams)) {
-- win_update_ctx ctx;
-- ctx.session = session;
-- ctx.c = c;
-- ctx.bytes = bytes;
-- ctx.updated = 0;
-- h2_proxy_ihash_iter(session->streams, win_update_iter, &ctx);
--
-- if (!ctx.updated) {
-- /* could not find the stream any more, possibly closed, update
-- * the connection window at least */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c,
-- "h2_proxy_session(%s): win_update conn %ld bytes",
-- session->id, (long)bytes);
-- nghttp2_session_consume_connection(session->ngh2, (size_t)bytes);
-- }
-- }
--}
--
---- a/modules/http2/h2_proxy_session.h
-+++ b/modules/http2/h2_proxy_session.h
-@@ -60,6 +60,11 @@
- H2_PROXYS_EV_PRE_CLOSE, /* connection will close after this */
- } h2_proxys_event_t;
-
-+typedef enum {
-+ H2_PING_ST_NONE, /* normal connection mode, ProxyTimeout rules */
-+ H2_PING_ST_AWAIT_ANY, /* waiting for any frame from backend */
-+ H2_PING_ST_AWAIT_PING, /* waiting for PING frame from backend */
-+} h2_ping_state_t;
-
- typedef struct h2_proxy_session h2_proxy_session;
- typedef void h2_proxy_request_done(h2_proxy_session *s, request_rec *r,
-@@ -74,7 +79,6 @@
- nghttp2_session *ngh2; /* the nghttp2 session itself */
-
- unsigned int aborted : 1;
-- unsigned int check_ping : 1;
- unsigned int h2_front : 1; /* if front-end connection is HTTP/2 */
-
- h2_proxy_request_done *done;
-@@ -94,6 +98,10 @@
-
- apr_bucket_brigade *input;
- apr_bucket_brigade *output;
-+
-+ h2_ping_state_t ping_state;
-+ apr_time_t ping_timeout;
-+ apr_time_t save_timeout;
- };
-
- h2_proxy_session *h2_proxy_session_setup(const char *id, proxy_conn_rec *p_conn,
-@@ -120,9 +128,6 @@
-
- void h2_proxy_session_cleanup(h2_proxy_session *s, h2_proxy_request_done *done);
-
--void h2_proxy_session_update_window(h2_proxy_session *s,
-- conn_rec *c, apr_off_t bytes);
--
- #define H2_PROXY_REQ_URL_NOTE "h2-proxy-req-url"
-
- #endif /* h2_proxy_session_h */
---- a/modules/http2/h2_proxy_util.c
-+++ b/modules/http2/h2_proxy_util.c
-@@ -452,6 +452,22 @@
- return ngh;
- }
-
-+h2_proxy_ngheader *h2_proxy_util_nghd_make(apr_pool_t *p, apr_table_t *headers)
-+{
-+
-+ h2_proxy_ngheader *ngh;
-+ size_t n;
-+
-+ n = 0;
-+ apr_table_do(count_header, &n, headers, NULL);
-+
-+ ngh = apr_pcalloc(p, sizeof(h2_proxy_ngheader));
-+ ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv));
-+ apr_table_do(add_table_header, ngh, headers, NULL);
-+
-+ return ngh;
-+}
-+
- /*******************************************************************************
- * header HTTP/1 <-> HTTP/2 conversions
- ******************************************************************************/
-@@ -609,6 +625,7 @@
- apr_table_t *headers)
- {
- h1_ctx x;
-+ const char *val;
-
- req->method = method;
- req->scheme = scheme;
-@@ -623,6 +640,11 @@
- x.pool = pool;
- x.headers = req->headers;
- apr_table_do(set_h1_header, &x, headers, NULL);
-+ if ((val = apr_table_get(headers, "TE")) && ap_find_token(pool, val, "trailers")) {
-+ /* client accepts trailers, forward this information */
-+ apr_table_addn(req->headers, "TE", "trailers");
-+ }
-+ apr_table_setn(req->headers, "te", "trailers");
- return APR_SUCCESS;
- }
-
-@@ -915,12 +937,12 @@
- nlen = (int)strlen(ns);
- delta = nlen - olen;
- plen = ctx->slen + delta + 1;
-- p = apr_pcalloc(ctx->pool, plen);
-+ p = apr_palloc(ctx->pool, plen);
- memcpy(p, ctx->s, start);
- memcpy(p + start, ns, nlen);
- strcpy(p + start + nlen, ctx->s + end);
- ctx->s = p;
-- ctx->slen = (int)strlen(p);
-+ ctx->slen = plen - 1; /* (int)strlen(p) */
- if (ctx->i >= end) {
- ctx->i += delta;
- }
---- a/modules/http2/h2_proxy_util.h
-+++ b/modules/http2/h2_proxy_util.h
-@@ -168,6 +168,8 @@
- h2_proxy_ngheader *h2_proxy_util_nghd_make_req(apr_pool_t *p,
- const struct h2_proxy_request *req);
-
-+h2_proxy_ngheader *h2_proxy_util_nghd_make(apr_pool_t *p, apr_table_t *headers);
-+
- /*******************************************************************************
- * h2_proxy_request helpers
- ******************************************************************************/
-@@ -183,7 +185,7 @@
-
- apr_time_t request_time;
-
-- unsigned int chunked : 1; /* iff requst body needs to be forwarded as chunked */
-+ unsigned int chunked : 1; /* iff request body needs to be forwarded as chunked */
- unsigned int serialize : 1; /* iff this request is written in HTTP/1.1 serialization */
- };
-
---- a/modules/http2/h2_push.c
-+++ b/modules/http2/h2_push.c
-@@ -464,33 +464,6 @@
- return NULL;
- }
-
--/*******************************************************************************
-- * push diary
-- *
-- * - The push diary keeps track of resources already PUSHed via HTTP/2 on this
-- * connection. It records a hash value from the absolute URL of the resource
-- * pushed.
-- * - Lacking openssl, it uses 'apr_hashfunc_default' for the value
-- * - with openssl, it uses SHA256 to calculate the hash value
-- * - whatever the method to generate the hash, the diary keeps a maximum of 64
-- * bits per hash, limiting the memory consumption to about
-- * H2PushDiarySize * 8
-- * bytes. Entries are sorted by most recently used and oldest entries are
-- * forgotten first.
-- * - Clients can initialize/replace the push diary by sending a 'Cache-Digest'
-- * header. Currently, this is the base64url encoded value of the cache digest
-- * as specified in https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/
-- * This draft can be expected to evolve and the definition of the header
-- * will be added there and refined.
-- * - The cache digest header is a Golomb Coded Set of hash values, but it may
-- * limit the amount of bits per hash value even further. For a good description
-- * of GCS, read here:
-- * http://giovanni.bajo.it/post/47119962313/golomb-coded-sets-smaller-than-bloom-filters
-- * - The means that the push diary might be initialized with hash values of much
-- * less than 64 bits, leading to more false positives, but smaller digest size.
-- ******************************************************************************/
--
--
- #define GCSLOG_LEVEL APLOG_TRACE1
-
- typedef struct h2_push_diary_entry {
-@@ -617,38 +590,48 @@
- return -1;
- }
-
--static h2_push_diary_entry *move_to_last(h2_push_diary *diary, apr_size_t idx)
-+static void move_to_last(h2_push_diary *diary, apr_size_t idx)
- {
- h2_push_diary_entry *entries = (h2_push_diary_entry*)diary->entries->elts;
- h2_push_diary_entry e;
-- apr_size_t lastidx = diary->entries->nelts-1;
-+ int lastidx;
-
-+ /* Move an existing entry to the last place */
-+ if (diary->entries->nelts <= 0)
-+ return;
-+
- /* move entry[idx] to the end */
-+ lastidx = diary->entries->nelts - 1;
- if (idx < lastidx) {
- e = entries[idx];
-- memmove(entries+idx, entries+idx+1, sizeof(e) * (lastidx - idx));
-+ memmove(entries+idx, entries+idx+1, sizeof(h2_push_diary_entry) * (lastidx - idx));
- entries[lastidx] = e;
- }
-- return &entries[lastidx];
- }
-
--static void h2_push_diary_append(h2_push_diary *diary, h2_push_diary_entry *e)
-+static void remove_first(h2_push_diary *diary)
- {
-- h2_push_diary_entry *ne;
-+ h2_push_diary_entry *entries = (h2_push_diary_entry*)diary->entries->elts;
-+ int lastidx;
-
-- if (diary->entries->nelts < diary->N) {
-- /* append a new diary entry at the end */
-- APR_ARRAY_PUSH(diary->entries, h2_push_diary_entry) = *e;
-- ne = &APR_ARRAY_IDX(diary->entries, diary->entries->nelts-1, h2_push_diary_entry);
-- }
-- else {
-- /* replace content with new digest. keeps memory usage constant once diary is full */
-- ne = move_to_last(diary, 0);
-- *ne = *e;
-+ /* move remaining entries to index 0 */
-+ lastidx = diary->entries->nelts - 1;
-+ if (lastidx > 0) {
-+ --diary->entries->nelts;
-+ memmove(entries, entries+1, sizeof(h2_push_diary_entry) * diary->entries->nelts);
- }
-+}
-+
-+static void h2_push_diary_append(h2_push_diary *diary, h2_push_diary_entry *e)
-+{
-+ while (diary->entries->nelts >= diary->N) {
-+ remove_first(diary);
-+ }
-+ /* append a new diary entry at the end */
-+ APR_ARRAY_PUSH(diary->entries, h2_push_diary_entry) = *e;
- /* Intentional no APLOGNO */
- ap_log_perror(APLOG_MARK, GCSLOG_LEVEL, 0, diary->entries->pool,
-- "push_diary_append: %"APR_UINT64_T_HEX_FMT, ne->hash);
-+ "push_diary_append: %"APR_UINT64_T_HEX_FMT, e->hash);
- }
-
- apr_array_header_t *h2_push_diary_update(h2_session *session, apr_array_header_t *pushes)
-@@ -691,30 +674,12 @@
- const struct h2_request *req,
- const struct h2_headers *res)
- {
-- h2_session *session = stream->session;
-- const char *cache_digest = apr_table_get(req->headers, "Cache-Digest");
- apr_array_header_t *pushes;
-- apr_status_t status;
-
-- if (cache_digest && session->push_diary) {
-- status = h2_push_diary_digest64_set(session->push_diary, req->authority,
-- cache_digest, stream->pool);
-- if (status != APR_SUCCESS) {
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c,
-- H2_SSSN_LOG(APLOGNO(03057), session,
-- "push diary set from Cache-Digest: %s"), cache_digest);
-- }
-- }
- pushes = h2_push_collect(stream->pool, req, stream->push_policy, res);
- return h2_push_diary_update(stream->session, pushes);
- }
-
--static apr_int32_t h2_log2inv(unsigned char log2)
--{
-- return log2? (1 << log2) : 1;
--}
--
--
- typedef struct {
- h2_push_diary *diary;
- unsigned char log2p;
-@@ -829,16 +794,11 @@
- apr_size_t hash_count;
-
- nelts = diary->entries->nelts;
--
-- if (nelts > APR_UINT32_MAX) {
-- /* should not happen */
-- return APR_ENOTIMPL;
-- }
- N = ceil_power_of_2(nelts);
- log2n = h2_log2(N);
-
- /* Now log2p is the max number of relevant bits, so that
-- * log2p + log2n == mask_bits. We can uise a lower log2p
-+ * log2p + log2n == mask_bits. We can use a lower log2p
- * and have a shorter set encoding...
- */
- log2pmax = h2_log2(ceil_power_of_2(maxP));
-@@ -895,166 +855,3 @@
- return APR_SUCCESS;
- }
-
--typedef struct {
-- h2_push_diary *diary;
-- apr_pool_t *pool;
-- unsigned char log2p;
-- const unsigned char *data;
-- apr_size_t datalen;
-- apr_size_t offset;
-- unsigned int bit;
-- apr_uint64_t last_val;
--} gset_decoder;
--
--static int gset_decode_next_bit(gset_decoder *decoder)
--{
-- if (++decoder->bit >= 8) {
-- if (++decoder->offset >= decoder->datalen) {
-- return -1;
-- }
-- decoder->bit = 0;
-- }
-- return (decoder->data[decoder->offset] & cbit_mask[decoder->bit])? 1 : 0;
--}
--
--static apr_status_t gset_decode_next(gset_decoder *decoder, apr_uint64_t *phash)
--{
-- apr_uint64_t flex = 0, fixed = 0, delta;
-- int i;
--
-- /* read 1 bits until we encounter 0, then read log2n(diary-P) bits.
-- * On a malformed bit-string, this will not fail, but produce results
-- * which are pbly too large. Luckily, the diary will modulo the hash.
-- */
-- while (1) {
-- int bit = gset_decode_next_bit(decoder);
-- if (bit == -1) {
-- return APR_EINVAL;
-- }
-- if (!bit) {
-- break;
-- }
-- ++flex;
-- }
--
-- for (i = 0; i < decoder->log2p; ++i) {
-- int bit = gset_decode_next_bit(decoder);
-- if (bit == -1) {
-- return APR_EINVAL;
-- }
-- fixed = (fixed << 1) | bit;
-- }
--
-- delta = (flex << decoder->log2p) | fixed;
-- *phash = delta + decoder->last_val;
-- decoder->last_val = *phash;
--
-- /* Intentional no APLOGNO */
-- ap_log_perror(APLOG_MARK, GCSLOG_LEVEL, 0, decoder->pool,
-- "h2_push_diary_digest_dec: val=%"APR_UINT64_T_HEX_FMT", delta=%"
-- APR_UINT64_T_HEX_FMT", flex=%d, fixed=%"APR_UINT64_T_HEX_FMT,
-- *phash, delta, (int)flex, fixed);
--
-- return APR_SUCCESS;
--}
--
--/**
-- * Initialize the push diary by a cache digest as described in
-- * https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/
-- * .
-- * @param diary the diary to set the digest into
-- * @param data the binary cache digest
-- * @param len the length of the cache digest
-- * @return APR_EINVAL if digest was not successfully parsed
-- */
--apr_status_t h2_push_diary_digest_set(h2_push_diary *diary, const char *authority,
-- const char *data, apr_size_t len)
--{
-- gset_decoder decoder;
-- unsigned char log2n, log2p;
-- int N, i;
-- apr_pool_t *pool = diary->entries->pool;
-- h2_push_diary_entry e;
-- apr_status_t status = APR_SUCCESS;
--
-- if (len < 2) {
-- /* at least this should be there */
-- return APR_EINVAL;
-- }
-- log2n = data[0];
-- log2p = data[1];
-- diary->mask_bits = log2n + log2p;
-- if (diary->mask_bits > 64) {
-- /* cannot handle */
-- return APR_ENOTIMPL;
-- }
--
-- /* whatever is in the digest, it replaces the diary entries */
-- apr_array_clear(diary->entries);
-- if (!authority || !strcmp("*", authority)) {
-- diary->authority = NULL;
-- }
-- else if (!diary->authority || strcmp(diary->authority, authority)) {
-- diary->authority = apr_pstrdup(diary->entries->pool, authority);
-- }
--
-- N = h2_log2inv(log2n + log2p);
--
-- decoder.diary = diary;
-- decoder.pool = pool;
-- decoder.log2p = log2p;
-- decoder.data = (const unsigned char*)data;
-- decoder.datalen = len;
-- decoder.offset = 1;
-- decoder.bit = 8;
-- decoder.last_val = 0;
--
-- diary->N = N;
-- /* Determine effective N we use for storage */
-- if (!N) {
-- /* a totally empty cache digest. someone tells us that she has no
-- * entries in the cache at all. Use our own preferences for N+mask
-- */
-- diary->N = diary->NMax;
-- return APR_SUCCESS;
-- }
-- else if (N > diary->NMax) {
-- /* Store not more than diary is configured to hold. We open us up
-- * to DOS attacks otherwise. */
-- diary->N = diary->NMax;
-- }
--
-- /* Intentional no APLOGNO */
-- ap_log_perror(APLOG_MARK, GCSLOG_LEVEL, 0, pool,
-- "h2_push_diary_digest_set: N=%d, log2n=%d, "
-- "diary->mask_bits=%d, dec.log2p=%d",
-- (int)diary->N, (int)log2n, diary->mask_bits,
-- (int)decoder.log2p);
--
-- for (i = 0; i < diary->N; ++i) {
-- if (gset_decode_next(&decoder, &e.hash) != APR_SUCCESS) {
-- /* the data may have less than N values */
-- break;
-- }
-- h2_push_diary_append(diary, &e);
-- }
--
-- /* Intentional no APLOGNO */
-- ap_log_perror(APLOG_MARK, GCSLOG_LEVEL, 0, pool,
-- "h2_push_diary_digest_set: diary now with %d entries, mask_bits=%d",
-- (int)diary->entries->nelts, diary->mask_bits);
-- return status;
--}
--
--apr_status_t h2_push_diary_digest64_set(h2_push_diary *diary, const char *authority,
-- const char *data64url, apr_pool_t *pool)
--{
-- const char *data;
-- apr_size_t len = h2_util_base64url_decode(&data, data64url, pool);
-- /* Intentional no APLOGNO */
-- ap_log_perror(APLOG_MARK, GCSLOG_LEVEL, 0, pool,
-- "h2_push_diary_digest64_set: digest=%s, dlen=%d",
-- data64url, (int)len);
-- return h2_push_diary_digest_set(diary, authority, data, len);
--}
--
---- a/modules/http2/h2_push.h
-+++ b/modules/http2/h2_push.h
-@@ -35,6 +35,44 @@
- H2_PUSH_DIGEST_SHA256
- } h2_push_digest_type;
-
-+/*******************************************************************************
-+ * push diary
-+ *
-+ * - The push diary keeps track of resources already PUSHed via HTTP/2 on this
-+ * connection. It records a hash value from the absolute URL of the resource
-+ * pushed.
-+ * - Lacking openssl,
-+ * - with openssl, it uses SHA256 to calculate the hash value, otherwise it
-+ * falls back to apr_hashfunc_default()
-+ * - whatever the method to generate the hash, the diary keeps a maximum of 64
-+ * bits per hash, limiting the memory consumption to about
-+ * H2PushDiarySize * 8
-+ * bytes. Entries are sorted by most recently used and oldest entries are
-+ * forgotten first.
-+ * - While useful by itself to avoid duplicated PUSHes on the same connection,
-+ * the original idea was that clients provided a 'Cache-Digest' header with
-+ * the values of *their own* cached resources. This was described in
-+ * <https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/>
-+ * and some subsequent revisions that tweaked values but kept the overall idea.
-+ * - The draft was abandoned by the IETF http-wg, as support from major clients,
-+ * e.g. browsers, was lacking for various reasons.
-+ * - For these reasons, mod_h2 abandoned its support for client supplied values
-+ * but keeps the diary. It seems to provide value for applications using PUSH,
-+ * is configurable in size and defaults to a very moderate amount of memory
-+ * used.
-+ * - The cache digest header is a Golomb Coded Set of hash values, but it may
-+ * limit the amount of bits per hash value even further. For a good description
-+ * of GCS, read here:
-+ * <http://giovanni.bajo.it/post/47119962313/golomb-coded-sets-smaller-than-bloom-filters>
-+ ******************************************************************************/
-+
-+
-+/*
-+ * The push diary is based on the abandoned draft
-+ * <https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/>
-+ * that describes how to use golomb filters.
-+ */
-+
- typedef struct h2_push_diary h2_push_diary;
-
- typedef void h2_push_digest_calc(h2_push_diary *diary, apr_uint64_t *phash, h2_push *push);
-@@ -101,20 +139,4 @@
- int maxP, const char *authority,
- const char **pdata, apr_size_t *plen);
-
--/**
-- * Initialize the push diary by a cache digest as described in
-- * https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/
-- * .
-- * @param diary the diary to set the digest into
-- * @param authority the authority to set the data for
-- * @param data the binary cache digest
-- * @param len the length of the cache digest
-- * @return APR_EINVAL if digest was not successfully parsed
-- */
--apr_status_t h2_push_diary_digest_set(h2_push_diary *diary, const char *authority,
-- const char *data, apr_size_t len);
--
--apr_status_t h2_push_diary_digest64_set(h2_push_diary *diary, const char *authority,
-- const char *data64url, apr_pool_t *pool);
--
- #endif /* defined(__mod_h2__h2_push__) */
---- a/modules/http2/h2_request.c
-+++ b/modules/http2/h2_request.c
-@@ -17,6 +17,7 @@
- #include <assert.h>
-
- #include <apr_strings.h>
-+#include <ap_mmn.h>
-
- #include <httpd.h>
- #include <http_core.h>
-@@ -46,9 +47,9 @@
- static int set_h1_header(void *ctx, const char *key, const char *value)
- {
- h1_ctx *x = ctx;
-- x->status = h2_req_add_header(x->headers, x->pool, key, strlen(key),
-- value, strlen(value));
-- return (x->status == APR_SUCCESS)? 1 : 0;
-+ int was_added;
-+ h2_req_add_header(x->headers, x->pool, key, strlen(key), value, strlen(value), 0, &was_added);
-+ return 1;
- }
-
- apr_status_t h2_request_rcreate(h2_request **preq, apr_pool_t *pool,
-@@ -84,8 +85,7 @@
- req->path = path;
- req->headers = apr_table_make(pool, 10);
- if (r->server) {
-- req->serialize = h2_config_geti(h2_config_sget(r->server),
-- H2_CONF_SER_HEADERS);
-+ req->serialize = h2_config_rgeti(r, H2_CONF_SER_HEADERS);
- }
-
- x.pool = pool;
-@@ -99,10 +99,12 @@
-
- apr_status_t h2_request_add_header(h2_request *req, apr_pool_t *pool,
- const char *name, size_t nlen,
-- const char *value, size_t vlen)
-+ const char *value, size_t vlen,
-+ size_t max_field_len, int *pwas_added)
- {
- apr_status_t status = APR_SUCCESS;
-
-+ *pwas_added = 0;
- if (nlen <= 0) {
- return status;
- }
-@@ -143,8 +145,9 @@
- }
- }
- else {
-- /* non-pseudo header, append to work bucket of stream */
-- status = h2_req_add_header(req->headers, pool, name, nlen, value, vlen);
-+ /* non-pseudo header, add to table */
-+ status = h2_req_add_header(req->headers, pool, name, nlen, value, vlen,
-+ max_field_len, pwas_added);
- }
-
- return status;
-@@ -156,7 +159,7 @@
-
- /* rfc7540, ch. 8.1.2.3:
- * - if we have :authority, it overrides any Host header
-- * - :authority MUST be ommited when converting h1->h2, so we
-+ * - :authority MUST be omitted when converting h1->h2, so we
- * might get a stream without, but then Host needs to be there */
- if (!req->authority) {
- const char *host = apr_table_get(req->headers, "Host");
-@@ -206,13 +209,11 @@
- return dst;
- }
-
--request_rec *h2_request_create_rec(const h2_request *req, conn_rec *c)
-+#if !AP_MODULE_MAGIC_AT_LEAST(20150222, 13)
-+static request_rec *my_ap_create_request(conn_rec *c)
- {
-- int access_status = HTTP_OK;
-- const char *rpath;
- apr_pool_t *p;
- request_rec *r;
-- const char *s;
-
- apr_pool_create(&p, c->pool);
- apr_pool_tag(p, "request");
-@@ -226,8 +227,8 @@
- r->ap_auth_type = NULL;
-
- r->allowed_methods = ap_make_method_list(p, 2);
--
-- r->headers_in = apr_table_clone(r->pool, req->headers);
-+
-+ r->headers_in = apr_table_make(r->pool, 5);
- r->trailers_in = apr_table_make(r->pool, 5);
- r->subprocess_env = apr_table_make(r->pool, 25);
- r->headers_out = apr_table_make(r->pool, 12);
-@@ -262,6 +263,24 @@
- r->useragent_addr = c->client_addr;
- r->useragent_ip = c->client_ip;
-
-+ return r;
-+}
-+#endif
-+
-+request_rec *h2_request_create_rec(const h2_request *req, conn_rec *c)
-+{
-+ int access_status = HTTP_OK;
-+ const char *rpath;
-+ const char *s;
-+
-+#if AP_MODULE_MAGIC_AT_LEAST(20150222, 13)
-+ request_rec *r = ap_create_request(c);
-+#else
-+ request_rec *r = my_ap_create_request(c);
-+#endif
-+
-+ r->headers_in = apr_table_clone(r->pool, req->headers);
-+
- ap_run_pre_read_request(r, c);
-
- /* Time to populate r with the data we have. */
-@@ -272,6 +291,9 @@
- if (r->method_number == M_GET && r->method[0] == 'H') {
- r->header_only = 1;
- }
-+ r->the_request = apr_psprintf(r->pool, "%s %s HTTP/2.0",
-+ req->method, req->path ? req->path : "");
-+ r->headers_in = apr_table_clone(r->pool, req->headers);
-
- rpath = (req->path ? req->path : "");
- ap_parse_uri(r, rpath);
-@@ -288,7 +310,9 @@
- */
- r->hostname = NULL;
- ap_update_vhost_from_headers(r);
--
-+ r->protocol = "HTTP/2.0";
-+ r->proto_num = HTTP_VERSION(2, 0);
-+
- /* we may have switched to another server */
- r->per_dir_config = r->server->lookup_defaults;
-
-@@ -337,3 +361,4 @@
- }
-
-
-+
---- a/modules/http2/h2_request.h
-+++ b/modules/http2/h2_request.h
-@@ -24,7 +24,8 @@
-
- apr_status_t h2_request_add_header(h2_request *req, apr_pool_t *pool,
- const char *name, size_t nlen,
-- const char *value, size_t vlen);
-+ const char *value, size_t vlen,
-+ size_t max_field_len, int *pwas_added);
-
- apr_status_t h2_request_add_trailer(h2_request *req, apr_pool_t *pool,
- const char *name, size_t nlen,
---- a/modules/http2/h2_session.c
-+++ b/modules/http2/h2_session.c
-@@ -106,7 +106,7 @@
-
- static void cleanup_unprocessed_streams(h2_session *session)
- {
-- h2_mplx_stream_do(session->mplx, rst_unprocessed_stream, session);
-+ h2_mplx_m_stream_do(session->mplx, rst_unprocessed_stream, session);
- }
-
- static h2_stream *h2_session_open_stream(h2_session *session, int stream_id,
-@@ -385,14 +385,19 @@
- break;
- case NGHTTP2_RST_STREAM:
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03067)
-- "h2_stream(%ld-%d): RST_STREAM by client, errror=%d",
-+ "h2_stream(%ld-%d): RST_STREAM by client, error=%d",
- session->id, (int)frame->hd.stream_id,
- (int)frame->rst_stream.error_code);
- stream = h2_session_stream_get(session, frame->hd.stream_id);
- if (stream && stream->initiated_on) {
-+ /* A stream reset on a request we sent it. Normal, when the
-+ * client does not want it. */
- ++session->pushes_reset;
- }
- else {
-+ /* A stream reset on a request it sent us. Could happen in a browser
-+ * when the user navigates away or cancels loading - maybe. */
-+ h2_mplx_m_client_rst(session->mplx, frame->hd.stream_id);
- ++session->streams_reset;
- }
- break;
-@@ -462,7 +467,7 @@
- }
-
- static int h2_session_continue_data(h2_session *session) {
-- if (h2_mplx_has_master_events(session->mplx)) {
-+ if (h2_mplx_m_has_master_events(session->mplx)) {
- return 0;
- }
- if (h2_conn_io_needs_flush(&session->io)) {
-@@ -495,9 +500,7 @@
- return NGHTTP2_ERR_WOULDBLOCK;
- }
-
-- if (frame->data.padlen > H2_MAX_PADLEN) {
-- return NGHTTP2_ERR_PROTO;
-- }
-+ ap_assert(frame->data.padlen <= (H2_MAX_PADLEN+1));
- padlen = (unsigned char)frame->data.padlen;
-
- stream = h2_session_stream_get(session, stream_id);
-@@ -513,8 +516,9 @@
- H2_STRM_MSG(stream, "send_data_cb for %ld bytes"),
- (long)length);
-
-- status = h2_conn_io_write(&session->io, (const char *)framehd, 9);
-+ status = h2_conn_io_write(&session->io, (const char *)framehd, H2_FRAME_HDR_LEN);
- if (padlen && status == APR_SUCCESS) {
-+ --padlen;
- status = h2_conn_io_write(&session->io, (const char *)&padlen, 1);
- }
-
-@@ -622,6 +626,39 @@
- }
- #endif
-
-+static ssize_t select_padding_cb(nghttp2_session *ngh2,
-+ const nghttp2_frame *frame,
-+ size_t max_payloadlen, void *user_data)
-+{
-+ h2_session *session = user_data;
-+ ssize_t frame_len = frame->hd.length + H2_FRAME_HDR_LEN; /* the total length without padding */
-+ ssize_t padded_len = frame_len;
-+
-+ /* Determine # of padding bytes to append to frame. Unless session->padding_always
-+ * the number my be capped by the ui.write_size that currently applies.
-+ */
-+ if (session->padding_max) {
-+ int n = ap_random_pick(0, session->padding_max);
-+ padded_len = H2MIN(max_payloadlen + H2_FRAME_HDR_LEN, frame_len + n);
-+ }
-+
-+ if (padded_len != frame_len) {
-+ if (!session->padding_always && session->io.write_size
-+ && (padded_len > session->io.write_size)
-+ && (frame_len <= session->io.write_size)) {
-+ padded_len = session->io.write_size;
-+ }
-+ if (APLOGctrace2(session->c)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c,
-+ "select padding from [%d, %d]: %d (frame length: 0x%04x, write size: %d)",
-+ (int)frame_len, (int)max_payloadlen+H2_FRAME_HDR_LEN,
-+ (int)(padded_len - frame_len), (int)padded_len, (int)session->io.write_size);
-+ }
-+ return padded_len - H2_FRAME_HDR_LEN;
-+ }
-+ return frame->hd.length;
-+}
-+
- #define NGH2_SET_CALLBACK(callbacks, name, fn)\
- nghttp2_session_callbacks_set_##name##_callback(callbacks, fn)
-
-@@ -647,6 +684,7 @@
- #ifdef H2_NG2_INVALID_HEADER_CB
- NGH2_SET_CALLBACK(*pcb, on_invalid_header, on_invalid_header_cb);
- #endif
-+ NGH2_SET_CALLBACK(*pcb, select_padding, select_padding_cb);
- return APR_SUCCESS;
- }
-
-@@ -691,7 +729,7 @@
- * Remove all streams greater than this number without submitting
- * a RST_STREAM frame, since that should be clear from the GOAWAY
- * we send. */
-- session->local.accepted_max = h2_mplx_shutdown(session->mplx);
-+ session->local.accepted_max = h2_mplx_m_shutdown(session->mplx);
- session->local.error = error;
- }
- else {
-@@ -741,7 +779,7 @@
- }
-
- transit(session, trigger, H2_SESSION_ST_CLEANUP);
-- h2_mplx_release_and_join(session->mplx, session->iowait);
-+ h2_mplx_m_release_and_join(session->mplx, session->iowait);
- session->mplx = NULL;
-
- ap_assert(session->ngh2);
-@@ -757,13 +795,12 @@
- {
- conn_rec *c = data;
- h2_session *session;
-- h2_ctx *ctx = h2_ctx_get(c, 0);
-
-- if (ctx && (session = h2_ctx_session_get(ctx))) {
-+ if ((session = h2_ctx_get_session(c))) {
- /* if the session is still there, now is the last chance
- * to perform cleanup. Normally, cleanup should have happened
- * earlier in the connection pre_close. Main reason is that
-- * any ongoing requests on slave connections might still access
-+ * any ongoing requests on secondary connections might still access
- * data which has, at this time, already been freed. An example
- * is mod_ssl that uses request hooks. */
- ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, c,
-@@ -775,11 +812,8 @@
- return APR_SUCCESS;
- }
-
--static apr_status_t h2_session_create_int(h2_session **psession,
-- conn_rec *c,
-- request_rec *r,
-- h2_ctx *ctx,
-- h2_workers *workers)
-+apr_status_t h2_session_create(h2_session **psession, conn_rec *c, request_rec *r,
-+ server_rec *s, h2_workers *workers)
- {
- nghttp2_session_callbacks *callbacks = NULL;
- nghttp2_option *options = NULL;
-@@ -820,19 +854,16 @@
- session->id = c->id;
- session->c = c;
- session->r = r;
-- session->s = h2_ctx_server_get(ctx);
-+ session->s = s;
- session->pool = pool;
-- session->config = h2_config_sget(session->s);
- session->workers = workers;
-
- session->state = H2_SESSION_ST_INIT;
- session->local.accepting = 1;
- session->remote.accepting = 1;
-
-- session->max_stream_count = h2_config_geti(session->config,
-- H2_CONF_MAX_STREAMS);
-- session->max_stream_mem = h2_config_geti(session->config,
-- H2_CONF_STREAM_MAX_MEM);
-+ session->max_stream_count = h2_config_sgeti(s, H2_CONF_MAX_STREAMS);
-+ session->max_stream_mem = h2_config_sgeti(s, H2_CONF_STREAM_MAX_MEM);
-
- status = apr_thread_cond_create(&session->iowait, session->pool);
- if (status != APR_SUCCESS) {
-@@ -862,14 +893,18 @@
- session->monitor->on_state_event = on_stream_state_event;
- session->monitor->on_event = on_stream_event;
-
-- session->mplx = h2_mplx_create(c, session->pool, session->config,
-- workers);
-+ session->mplx = h2_mplx_m_create(c, s, session->pool, workers);
-
- /* connection input filter that feeds the session */
- session->cin = h2_filter_cin_create(session);
- ap_add_input_filter("H2_IN", session->cin, r, c);
-
-- h2_conn_io_init(&session->io, c, session->config);
-+ h2_conn_io_init(&session->io, c, s);
-+ session->padding_max = h2_config_sgeti(s, H2_CONF_PADDING_BITS);
-+ if (session->padding_max) {
-+ session->padding_max = (0x01 << session->padding_max) - 1;
-+ }
-+ session->padding_always = h2_config_sgeti(s, H2_CONF_PADDING_ALWAYS);
- session->bbtmp = apr_brigade_create(session->pool, c->bucket_alloc);
-
- status = init_callbacks(c, &callbacks);
-@@ -888,8 +923,7 @@
- apr_pool_destroy(pool);
- return status;
- }
-- nghttp2_option_set_peer_max_concurrent_streams(
-- options, (uint32_t)session->max_stream_count);
-+ nghttp2_option_set_peer_max_concurrent_streams(options, (uint32_t)session->max_stream_count);
- /* We need to handle window updates ourself, otherwise we
- * get flooded by nghttp2. */
- nghttp2_option_set_no_auto_window_update(options, 1);
-@@ -907,7 +941,7 @@
- return APR_ENOMEM;
- }
-
-- n = h2_config_geti(session->config, H2_CONF_PUSH_DIARY_SIZE);
-+ n = h2_config_sgeti(s, H2_CONF_PUSH_DIARY_SIZE);
- session->push_diary = h2_push_diary_create(session->pool, n);
-
- if (APLOGcdebug(c)) {
-@@ -924,22 +958,11 @@
- (int)session->push_diary->N);
- }
-
-- apr_pool_pre_cleanup_register(pool, c, session_pool_cleanup);
-+ apr_pool_pre_cleanup_register(pool, c, session_pool_cleanup);
-+
- return APR_SUCCESS;
- }
-
--apr_status_t h2_session_create(h2_session **psession,
-- conn_rec *c, h2_ctx *ctx, h2_workers *workers)
--{
-- return h2_session_create_int(psession, c, NULL, ctx, workers);
--}
--
--apr_status_t h2_session_rcreate(h2_session **psession,
-- request_rec *r, h2_ctx *ctx, h2_workers *workers)
--{
-- return h2_session_create_int(psession, r->connection, r, ctx, workers);
--}
--
- static apr_status_t h2_session_start(h2_session *session, int *rv)
- {
- apr_status_t status = APR_SUCCESS;
-@@ -1004,7 +1027,7 @@
- settings[slen].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
- settings[slen].value = (uint32_t)session->max_stream_count;
- ++slen;
-- win_size = h2_config_geti(session->config, H2_CONF_WIN_SIZE);
-+ win_size = h2_config_sgeti(session->s, H2_CONF_WIN_SIZE);
- if (win_size != H2_INITIAL_WINDOW_SIZE) {
- settings[slen].settings_id = NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
- settings[slen].value = win_size;
-@@ -1156,7 +1179,7 @@
- stream = h2_session_open_stream(session, nid, is->id);
- if (!stream) {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
-- H2_STRM_LOG(APLOGNO(03077), stream,
-+ H2_STRM_LOG(APLOGNO(03077), is,
- "failed to create stream obj %d"), nid);
- /* kill the push_promise */
- nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE, nid,
-@@ -1262,7 +1285,7 @@
-
- rv = nghttp2_session_change_stream_priority(session->ngh2, stream->id, &ps);
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c,
-- ""H2_STRM_LOG(APLOGNO(03203), stream,
-+ H2_STRM_LOG(APLOGNO(03203), stream,
- "PUSH %s, weight=%d, depends=%d, returned=%d"),
- ptype, ps.weight, ps.stream_id, rv);
- status = (rv < 0)? APR_EGENERAL : APR_SUCCESS;
-@@ -1280,7 +1303,7 @@
- {
- /* iff we can and they can and want */
- return (session->remote.accepting /* remote GOAWAY received */
-- && h2_config_geti(session->config, H2_CONF_PUSH)
-+ && h2_config_sgeti(session->s, H2_CONF_PUSH)
- && nghttp2_session_get_remote_settings(session->ngh2,
- NGHTTP2_SETTINGS_ENABLE_PUSH));
- }
-@@ -1324,6 +1347,7 @@
- int eos)
- {
- apr_status_t status = APR_SUCCESS;
-+ const char *s;
- int rv = 0;
-
- ap_assert(session);
-@@ -1391,8 +1415,12 @@
- && (headers->status < 400)
- && (headers->status != 304)
- && h2_session_push_enabled(session)) {
--
-- h2_stream_submit_pushes(stream, headers);
-+ /* PUSH is possible and enabled on server, unless the request
-+ * denies it, submit resources to push */
-+ s = apr_table_get(headers->notes, H2_PUSH_MODE_NOTE);
-+ if (!s || strcmp(s, "0")) {
-+ h2_stream_submit_pushes(stream, headers);
-+ }
- }
-
- if (!stream->pref_priority) {
-@@ -1414,7 +1442,7 @@
- }
-
- if (headers->status == 103
-- && !h2_config_geti(session->config, H2_CONF_EARLY_HINTS)) {
-+ && !h2_config_sgeti(session->s, H2_CONF_EARLY_HINTS)) {
- /* suppress sending this to the client, it might have triggered
- * pushes and served its purpose nevertheless */
- rv = 0;
-@@ -1524,7 +1552,7 @@
- if (stream) {
- ap_assert(!stream->scheduled);
- if (h2_stream_prep_processing(stream) == APR_SUCCESS) {
-- h2_mplx_process(session->mplx, stream, stream_pri_cmp, session);
-+ h2_mplx_m_process(session->mplx, stream, stream_pri_cmp, session);
- }
- else {
- h2_stream_rst(stream, H2_ERR_INTERNAL_ERROR);
-@@ -1680,7 +1708,7 @@
- * that already served requests - not fair. */
- session->idle_sync_until = apr_time_now() + apr_time_from_sec(1);
- s = "timeout";
-- timeout = H2MAX(session->s->timeout, session->s->keep_alive_timeout);
-+ timeout = session->s->timeout;
- update_child_status(session, SERVER_BUSY_READ, "idle");
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
- H2_SSSN_LOG("", session, "enter idle, timeout = %d sec"),
-@@ -1688,8 +1716,8 @@
- }
- else if (session->open_streams) {
- s = "timeout";
-- timeout = session->s->keep_alive_timeout;
-- update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle");
-+ timeout = session->s->timeout;
-+ update_child_status(session, SERVER_BUSY_READ, "idle");
- }
- else {
- /* normal keepalive setup */
-@@ -1796,7 +1824,7 @@
- session->open_streams);
- h2_conn_io_flush(&session->io);
- if (session->open_streams > 0) {
-- if (h2_mplx_awaits_data(session->mplx)) {
-+ if (h2_mplx_m_awaits_data(session->mplx)) {
- /* waiting for at least one stream to produce data */
- transit(session, "no io", H2_SESSION_ST_WAIT);
- }
-@@ -1954,7 +1982,8 @@
- ev_stream_closed(session, stream);
- break;
- case H2_SS_CLEANUP:
-- h2_mplx_stream_cleanup(session->mplx, stream);
-+ nghttp2_session_set_stream_user_data(session->ngh2, stream->id, NULL);
-+ h2_mplx_m_stream_cleanup(session->mplx, stream);
- break;
- default:
- break;
-@@ -2044,7 +2073,7 @@
- static apr_status_t dispatch_master(h2_session *session) {
- apr_status_t status;
-
-- status = h2_mplx_dispatch_master_events(session->mplx,
-+ status = h2_mplx_m_dispatch_master_events(session->mplx,
- on_stream_resume, session);
- if (status == APR_EAGAIN) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c,
-@@ -2089,7 +2118,7 @@
- switch (session->state) {
- case H2_SESSION_ST_INIT:
- ap_update_child_status_from_conn(c->sbh, SERVER_BUSY_READ, c);
-- if (!h2_is_acceptable_connection(c, 1)) {
-+ if (!h2_is_acceptable_connection(c, session->r, 1)) {
- update_child_status(session, SERVER_BUSY_READ,
- "inadequate security");
- h2_session_shutdown(session,
-@@ -2112,7 +2141,7 @@
- break;
-
- case H2_SESSION_ST_IDLE:
-- if (session->idle_until && (apr_time_now() + session->idle_delay) > session->idle_until) {
-+ if (session->idle_until && (now + session->idle_delay) > session->idle_until) {
- ap_log_cerror( APLOG_MARK, APLOG_TRACE1, status, c,
- H2_SSSN_MSG(session, "idle, timeout reached, closing"));
- if (session->idle_delay) {
-@@ -2146,6 +2175,14 @@
- session->have_read = 1;
- }
- else if (APR_STATUS_IS_EAGAIN(status) || APR_STATUS_IS_TIMEUP(status)) {
-+ status = h2_mplx_m_idle(session->mplx);
-+ if (status == APR_EAGAIN) {
-+ break;
-+ }
-+ else if (status != APR_SUCCESS) {
-+ dispatch_event(session, H2_SESSION_EV_CONN_ERROR,
-+ H2_ERR_ENHANCE_YOUR_CALM, "less is more");
-+ }
- status = APR_EAGAIN;
- goto out;
- }
-@@ -2168,7 +2205,7 @@
- /* We wait in smaller increments, using a 1 second timeout.
- * That gives us the chance to check for MPMQ_STOPPING often.
- */
-- status = h2_mplx_idle(session->mplx);
-+ status = h2_mplx_m_idle(session->mplx);
- if (status == APR_EAGAIN) {
- break;
- }
-@@ -2282,7 +2319,7 @@
- "h2_session: wait for data, %ld micros",
- (long)session->wait_us);
- }
-- status = h2_mplx_out_trywait(session->mplx, session->wait_us,
-+ status = h2_mplx_m_out_trywait(session->mplx, session->wait_us,
- session->iowait);
- if (status == APR_SUCCESS) {
- session->wait_us = 0;
-@@ -2319,7 +2356,7 @@
- dispatch_event(session, H2_SESSION_EV_NGH2_DONE, 0, NULL);
- }
- if (session->reprioritize) {
-- h2_mplx_reprioritize(session->mplx, stream_pri_cmp, session);
-+ h2_mplx_m_reprioritize(session->mplx, stream_pri_cmp, session);
- session->reprioritize = 0;
- }
- }
---- a/modules/http2/h2_session.h
-+++ b/modules/http2/h2_session.h
-@@ -80,12 +80,13 @@
- request_rec *r; /* the request that started this in case
- * of 'h2c', NULL otherwise */
- server_rec *s; /* server/vhost we're starting on */
-- const struct h2_config *config; /* Relevant config for this session */
- apr_pool_t *pool; /* pool to use in session */
- struct h2_mplx *mplx; /* multiplexer for stream data */
- struct h2_workers *workers; /* for executing stream tasks */
- struct h2_filter_cin *cin; /* connection input filter context */
- h2_conn_io io; /* io on httpd conn filters */
-+ int padding_max; /* max number of padding bytes */
-+ int padding_always; /* padding has precedence over I/O optimizations */
- struct nghttp2_session *ngh2; /* the nghttp2 session (internal use) */
-
- h2_session_state state; /* state session is in */
-@@ -131,7 +132,7 @@
- const char *last_status_msg; /* the one already reported */
-
- struct h2_iqueue *in_pending; /* all streams with input pending */
-- struct h2_iqueue *in_process; /* all streams ready for processing on slave */
-+ struct h2_iqueue *in_process; /* all streams ready for processing on a secondary */
-
- } h2_session;
-
-@@ -142,27 +143,15 @@
- * The session will apply the configured parameter.
- * @param psession pointer receiving the created session on success or NULL
- * @param c the connection to work on
-+ * @param r optional request when protocol was upgraded
- * @param cfg the module config to apply
- * @param workers the worker pool to use
- * @return the created session
- */
- apr_status_t h2_session_create(h2_session **psession,
-- conn_rec *c, struct h2_ctx *ctx,
-+ conn_rec *c, request_rec *r, server_rec *,
- struct h2_workers *workers);
-
--/**
-- * Create a new h2_session for the given request.
-- * The session will apply the configured parameter.
-- * @param psession pointer receiving the created session on success or NULL
-- * @param r the request that was upgraded
-- * @param cfg the module config to apply
-- * @param workers the worker pool to use
-- * @return the created session
-- */
--apr_status_t h2_session_rcreate(h2_session **psession,
-- request_rec *r, struct h2_ctx *ctx,
-- struct h2_workers *workers);
--
- void h2_session_event(h2_session *session, h2_session_event_t ev,
- int err, const char *msg);
-
---- a/modules/http2/h2_stream.c
-+++ b/modules/http2/h2_stream.c
-@@ -365,9 +365,8 @@
- static void set_policy_for(h2_stream *stream, h2_request *r)
- {
- int enabled = h2_session_push_enabled(stream->session);
-- stream->push_policy = h2_push_policy_determine(r->headers, stream->pool,
-- enabled);
-- r->serialize = h2_config_geti(stream->session->config, H2_CONF_SER_HEADERS);
-+ stream->push_policy = h2_push_policy_determine(r->headers, stream->pool, enabled);
-+ r->serialize = h2_config_sgeti(stream->session->s, H2_CONF_SER_HEADERS);
- }
-
- apr_status_t h2_stream_send_frame(h2_stream *stream, int ftype, int flags, size_t frame_len)
-@@ -398,13 +397,8 @@
- /* start pushed stream */
- ap_assert(stream->request == NULL);
- ap_assert(stream->rtmp != NULL);
-- status = h2_request_end_headers(stream->rtmp, stream->pool, 1, 0);
-- if (status != APR_SUCCESS) {
-- return status;
-- }
-- set_policy_for(stream, stream->rtmp);
-- stream->request = stream->rtmp;
-- stream->rtmp = NULL;
-+ status = h2_stream_end_headers(stream, 1, 0);
-+ if (status != APR_SUCCESS) goto leave;
- break;
-
- default:
-@@ -416,6 +410,7 @@
- if (status == APR_SUCCESS && eos) {
- status = transit(stream, on_event(stream, H2_SEV_CLOSED_L));
- }
-+leave:
- return status;
- }
-
-@@ -451,18 +446,13 @@
- ap_assert(stream->request == NULL);
- if (stream->rtmp == NULL) {
- /* This can only happen, if the stream has received no header
-- * name/value pairs at all. The lastest nghttp2 version have become
-+ * name/value pairs at all. The latest nghttp2 version have become
- * pretty good at detecting this early. In any case, we have
- * to abort the connection here, since this is clearly a protocol error */
- return APR_EINVAL;
- }
-- status = h2_request_end_headers(stream->rtmp, stream->pool, eos, frame_len);
-- if (status != APR_SUCCESS) {
-- return status;
-- }
-- set_policy_for(stream, stream->rtmp);
-- stream->request = stream->rtmp;
-- stream->rtmp = NULL;
-+ status = h2_stream_end_headers(stream, eos, frame_len);
-+ if (status != APR_SUCCESS) goto leave;
- }
- break;
-
-@@ -473,6 +463,7 @@
- if (status == APR_SUCCESS && eos) {
- status = transit(stream, on_event(stream, H2_SEV_CLOSED_R));
- }
-+leave:
- return status;
- }
-
-@@ -663,11 +654,14 @@
-
- static apr_status_t add_trailer(h2_stream *stream,
- const char *name, size_t nlen,
-- const char *value, size_t vlen)
-+ const char *value, size_t vlen,
-+ size_t max_field_len, int *pwas_added)
- {
- conn_rec *c = stream->session->c;
- char *hname, *hvalue;
-+ const char *existing;
-
-+ *pwas_added = 0;
- if (nlen == 0 || name[0] == ':') {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, APR_EINVAL, c,
- H2_STRM_LOG(APLOGNO(03060), stream,
-@@ -681,9 +675,18 @@
- stream->trailers = apr_table_make(stream->pool, 5);
- }
- hname = apr_pstrndup(stream->pool, name, nlen);
-- hvalue = apr_pstrndup(stream->pool, value, vlen);
- h2_util_camel_case_header(hname, nlen);
-+ existing = apr_table_get(stream->trailers, hname);
-+ if (max_field_len
-+ && ((existing? strlen(existing)+2 : 0) + vlen + nlen + 2 > max_field_len)) {
-+ /* "key: (oldval, )?nval" is too long */
-+ return APR_EINVAL;
-+ }
-+ if (!existing) *pwas_added = 1;
-+ hvalue = apr_pstrndup(stream->pool, value, vlen);
- apr_table_mergen(stream->trailers, hname, hvalue);
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
-+ H2_STRM_MSG(stream, "added trailer '%s: %s'"), hname, hvalue);
-
- return APR_SUCCESS;
- }
-@@ -693,44 +696,31 @@
- const char *value, size_t vlen)
- {
- h2_session *session = stream->session;
-- int error = 0;
-- apr_status_t status;
-+ int error = 0, was_added = 0;
-+ apr_status_t status = APR_SUCCESS;
-
- if (stream->has_response) {
- return APR_EINVAL;
- }
-- ++stream->request_headers_added;
-+
- if (name[0] == ':') {
- if ((vlen) > session->s->limit_req_line) {
- /* pseudo header: approximation of request line size check */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
-- H2_STRM_MSG(stream, "pseudo %s too long"), name);
-+ if (!h2_stream_is_ready(stream)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c,
-+ H2_STRM_LOG(APLOGNO(10178), stream,
-+ "Request pseudo header exceeds "
-+ "LimitRequestFieldSize: %s"), name);
-+ }
- error = HTTP_REQUEST_URI_TOO_LARGE;
-+ goto cleanup;
- }
- }
-- else if ((nlen + 2 + vlen) > session->s->limit_req_fieldsize) {
-- /* header too long */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
-- H2_STRM_MSG(stream, "header %s too long"), name);
-- error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE;
-- }
--
-- if (stream->request_headers_added > session->s->limit_req_fields + 4) {
-- /* too many header lines, include 4 pseudo headers */
-- if (stream->request_headers_added
-- > session->s->limit_req_fields + 4 + 100) {
-- /* yeah, right */
-- h2_stream_rst(stream, H2_ERR_ENHANCE_YOUR_CALM);
-- return APR_ECONNRESET;
-- }
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
-- H2_STRM_MSG(stream, "too many header lines"));
-- error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE;
-- }
-
-- if (error) {
-- set_error_response(stream, error);
-- return APR_EINVAL;
-+ if (session->s->limit_req_fields > 0
-+ && stream->request_headers_added > session->s->limit_req_fields) {
-+ /* already over limit, count this attempt, but do not take it in */
-+ ++stream->request_headers_added;
- }
- else if (H2_SS_IDLE == stream->state) {
- if (!stream->rtmp) {
-@@ -738,16 +728,55 @@
- NULL, NULL, NULL, NULL, NULL, 0);
- }
- status = h2_request_add_header(stream->rtmp, stream->pool,
-- name, nlen, value, vlen);
-+ name, nlen, value, vlen,
-+ session->s->limit_req_fieldsize, &was_added);
-+ if (was_added) ++stream->request_headers_added;
- }
- else if (H2_SS_OPEN == stream->state) {
-- status = add_trailer(stream, name, nlen, value, vlen);
-+ status = add_trailer(stream, name, nlen, value, vlen,
-+ session->s->limit_req_fieldsize, &was_added);
-+ if (was_added) ++stream->request_headers_added;
- }
- else {
- status = APR_EINVAL;
-+ goto cleanup;
-+ }
-+
-+ if (APR_EINVAL == status) {
-+ /* header too long */
-+ if (!h2_stream_is_ready(stream)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c,
-+ H2_STRM_LOG(APLOGNO(10180), stream,"Request header exceeds "
-+ "LimitRequestFieldSize: %.*s"),
-+ (int)H2MIN(nlen, 80), name);
-+ }
-+ error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE;
-+ goto cleanup;
-+ }
-+
-+ if (session->s->limit_req_fields > 0
-+ && stream->request_headers_added > session->s->limit_req_fields) {
-+ /* too many header lines */
-+ if (stream->request_headers_added > session->s->limit_req_fields + 100) {
-+ /* yeah, right, this request is way over the limit, say goodbye */
-+ h2_stream_rst(stream, H2_ERR_ENHANCE_YOUR_CALM);
-+ return APR_ECONNRESET;
-+ }
-+ if (!h2_stream_is_ready(stream)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c,
-+ H2_STRM_LOG(APLOGNO(10181), stream, "Number of request headers "
-+ "exceeds LimitRequestFields"));
-+ }
-+ error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE;
-+ goto cleanup;
- }
-
-- if (status != APR_SUCCESS) {
-+cleanup:
-+ if (error) {
-+ set_error_response(stream, error);
-+ return APR_EINVAL;
-+ }
-+ else if (status != APR_SUCCESS) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
- H2_STRM_MSG(stream, "header %s not accepted"), name);
- h2_stream_dispatch(stream, H2_SEV_CANCELLED);
-@@ -755,6 +784,49 @@
- return status;
- }
-
-+typedef struct {
-+ apr_size_t maxlen;
-+ const char *failed_key;
-+} val_len_check_ctx;
-+
-+static int table_check_val_len(void *baton, const char *key, const char *value)
-+{
-+ val_len_check_ctx *ctx = baton;
-+
-+ if (strlen(value) <= ctx->maxlen) return 1;
-+ ctx->failed_key = key;
-+ return 0;
-+}
-+
-+apr_status_t h2_stream_end_headers(h2_stream *stream, int eos, size_t raw_bytes)
-+{
-+ apr_status_t status;
-+ val_len_check_ctx ctx;
-+
-+ status = h2_request_end_headers(stream->rtmp, stream->pool, eos, raw_bytes);
-+ if (APR_SUCCESS == status) {
-+ set_policy_for(stream, stream->rtmp);
-+ stream->request = stream->rtmp;
-+ stream->rtmp = NULL;
-+
-+ ctx.maxlen = stream->session->s->limit_req_fieldsize;
-+ ctx.failed_key = NULL;
-+ apr_table_do(table_check_val_len, &ctx, stream->request->headers, NULL);
-+ if (ctx.failed_key) {
-+ if (!h2_stream_is_ready(stream)) {
-+ ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, stream->session->c,
-+ H2_STRM_LOG(APLOGNO(10230), stream,"Request header exceeds "
-+ "LimitRequestFieldSize: %.*s"),
-+ (int)H2MIN(strlen(ctx.failed_key), 80), ctx.failed_key);
-+ }
-+ set_error_response(stream, HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE);
-+ /* keep on returning APR_SUCCESS, so that we send a HTTP response and
-+ * do not RST the stream. */
-+ }
-+ }
-+ return status;
-+}
-+
- static apr_bucket *get_first_headers_bucket(apr_bucket_brigade *bb)
- {
- if (bb) {
-@@ -855,7 +927,7 @@
- * is requested. But we can reduce the size in case the master
- * connection operates in smaller chunks. (TSL warmup) */
- if (stream->session->io.write_size > 0) {
-- max_chunk = stream->session->io.write_size - 9; /* header bits */
-+ max_chunk = stream->session->io.write_size - H2_FRAME_HDR_LEN;
- }
- requested = (*plen > 0)? H2MIN(*plen, max_chunk) : max_chunk;
-
-@@ -864,7 +936,7 @@
-
- if (status == APR_EAGAIN) {
- /* TODO: ugly, someone needs to retrieve the response first */
-- h2_mplx_keep_active(stream->session->mplx, stream);
-+ h2_mplx_m_keep_active(stream->session->mplx, stream);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
- H2_STRM_MSG(stream, "prep, response eagain"));
- return status;
-@@ -987,7 +1059,7 @@
- const char *ctype = apr_table_get(response->headers, "content-type");
- if (ctype) {
- /* FIXME: Not good enough, config needs to come from request->server */
-- return h2_config_get_priority(stream->session->config, ctype);
-+ return h2_cconfig_get_priority(stream->session->c, ctype);
- }
- }
- return NULL;
---- a/modules/http2/h2_stream.h
-+++ b/modules/http2/h2_stream.h
-@@ -198,6 +198,10 @@
- apr_status_t h2_stream_add_header(h2_stream *stream,
- const char *name, size_t nlen,
- const char *value, size_t vlen);
-+
-+/* End the construction of request headers */
-+apr_status_t h2_stream_end_headers(h2_stream *stream, int eos, size_t raw_bytes);
-+
-
- apr_status_t h2_stream_send_frame(h2_stream *stream, int frame_type, int flags, size_t frame_len);
- apr_status_t h2_stream_recv_frame(h2_stream *stream, int frame_type, int flags, size_t frame_len);
---- a/modules/http2/h2_switch.c
-+++ b/modules/http2/h2_switch.c
-@@ -55,7 +55,6 @@
- int is_tls = h2_h2_is_tls(c);
- const char **protos = is_tls? h2_tls_protos : h2_clear_protos;
-
-- (void)s;
- if (!h2_mpm_supported()) {
- return DECLINED;
- }
-@@ -68,7 +67,7 @@
- return DECLINED;
- }
-
-- if (!h2_is_acceptable_connection(c, 0)) {
-+ if (!h2_is_acceptable_connection(c, r, 0)) {
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(03084)
- "protocol propose: connection requirements not met");
- return DECLINED;
-@@ -81,7 +80,7 @@
- */
- const char *p;
-
-- if (!h2_allows_h2_upgrade(c)) {
-+ if (!h2_allows_h2_upgrade(r)) {
- return DECLINED;
- }
-
-@@ -150,7 +149,7 @@
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
- "switching protocol to '%s'", protocol);
- h2_ctx_protocol_set(ctx, protocol);
-- h2_ctx_server_set(ctx, s);
-+ h2_ctx_server_update(ctx, s);
-
- if (r != NULL) {
- apr_status_t status;
-@@ -160,12 +159,11 @@
- * right away.
- */
- ap_remove_input_filter_byhandle(r->input_filters, "http_in");
-- ap_remove_input_filter_byhandle(r->input_filters, "reqtimeout");
- ap_remove_output_filter_byhandle(r->output_filters, "HTTP_HEADER");
-
- /* Ok, start an h2_conn on this one. */
-- h2_ctx_server_set(ctx, r->server);
-- status = h2_conn_setup(ctx, r->connection, r);
-+ status = h2_conn_setup(c, r, s);
-+
- if (status != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, APLOGNO(03088)
- "session setup");
-@@ -173,7 +171,7 @@
- return !OK;
- }
-
-- h2_conn_run(ctx, c);
-+ h2_conn_run(c);
- }
- return OK;
- }
---- a/modules/http2/h2_task.c
-+++ b/modules/http2/h2_task.c
-@@ -86,7 +86,7 @@
- task->request->authority,
- task->request->path);
- task->output.opened = 1;
-- return h2_mplx_out_open(task->mplx, task->stream_id, task->output.beam);
-+ return h2_mplx_t_out_open(task->mplx, task->stream_id, task->output.beam);
- }
-
- static apr_status_t send_out(h2_task *task, apr_bucket_brigade* bb, int block)
-@@ -97,7 +97,7 @@
- apr_brigade_length(bb, 0, &written);
- H2_TASK_OUT_LOG(APLOG_TRACE2, task, bb, "h2_task send_out");
- h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "send_out(before)");
-- /* engines send unblocking */
-+
- status = h2_beam_send(task->output.beam, bb,
- block? APR_BLOCK_READ : APR_NONBLOCK_READ);
- h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "send_out(after)");
-@@ -126,33 +126,16 @@
- * request_rec out filter chain) into the h2_mplx for further sending
- * on the master connection.
- */
--static apr_status_t slave_out(h2_task *task, ap_filter_t* f,
-- apr_bucket_brigade* bb)
-+static apr_status_t secondary_out(h2_task *task, ap_filter_t* f,
-+ apr_bucket_brigade* bb)
- {
- apr_bucket *b;
- apr_status_t rv = APR_SUCCESS;
- int flush = 0, blocking;
-
-- if (task->frozen) {
-- h2_util_bb_log(task->c, task->stream_id, APLOG_TRACE2,
-- "frozen task output write, ignored", bb);
-- while (!APR_BRIGADE_EMPTY(bb)) {
-- b = APR_BRIGADE_FIRST(bb);
-- if (AP_BUCKET_IS_EOR(b)) {
-- APR_BUCKET_REMOVE(b);
-- task->eor = b;
-- }
-- else {
-- apr_bucket_delete(b);
-- }
-- }
-- return APR_SUCCESS;
-- }
--
- send:
-- /* we send block once we opened the output, so someone is there
-- * reading it *and* the task is not assigned to a h2_req_engine */
-- blocking = (!task->assigned && task->output.opened);
-+ /* we send block once we opened the output, so someone is there reading it */
-+ blocking = task->output.opened;
- for (b = APR_BRIGADE_FIRST(bb);
- b != APR_BRIGADE_SENTINEL(bb);
- b = APR_BUCKET_NEXT(b)) {
-@@ -192,7 +175,7 @@
- if (APR_SUCCESS == rv) {
- /* could not write all, buffer the rest */
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, task->c, APLOGNO(03405)
-- "h2_slave_out(%s): saving brigade", task->id);
-+ "h2_secondary_out(%s): saving brigade", task->id);
- ap_assert(NULL);
- rv = ap_save_brigade(f, &task->output.bb, &bb, task->pool);
- flush = 1;
-@@ -206,7 +189,7 @@
- }
- out:
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, rv, task->c,
-- "h2_slave_out(%s): slave_out leave", task->id);
-+ "h2_secondary_out(%s): secondary_out leave", task->id);
- return rv;
- }
-
-@@ -219,14 +202,14 @@
- }
-
- /*******************************************************************************
-- * task slave connection filters
-+ * task secondary connection filters
- ******************************************************************************/
-
--static apr_status_t h2_filter_slave_in(ap_filter_t* f,
-- apr_bucket_brigade* bb,
-- ap_input_mode_t mode,
-- apr_read_type_e block,
-- apr_off_t readbytes)
-+static apr_status_t h2_filter_secondary_in(ap_filter_t* f,
-+ apr_bucket_brigade* bb,
-+ ap_input_mode_t mode,
-+ apr_read_type_e block,
-+ apr_off_t readbytes)
- {
- h2_task *task;
- apr_status_t status = APR_SUCCESS;
-@@ -236,12 +219,12 @@
- apr_size_t rmax = ((readbytes <= APR_SIZE_MAX)?
- (apr_size_t)readbytes : APR_SIZE_MAX);
-
-- task = h2_ctx_cget_task(f->c);
-+ task = h2_ctx_get_task(f->c);
- ap_assert(task);
-
- if (trace1) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c,
-- "h2_slave_in(%s): read, mode=%d, block=%d, readbytes=%ld",
-+ "h2_secondary_in(%s): read, mode=%d, block=%d, readbytes=%ld",
- task->id, mode, block, (long)readbytes);
- }
-
-@@ -271,7 +254,7 @@
- /* Get more input data for our request. */
- if (trace1) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c,
-- "h2_slave_in(%s): get more data from mplx, block=%d, "
-+ "h2_secondary_in(%s): get more data from mplx, block=%d, "
- "readbytes=%ld", task->id, block, (long)readbytes);
- }
- if (task->input.beam) {
-@@ -284,7 +267,7 @@
-
- if (trace1) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, f->c,
-- "h2_slave_in(%s): read returned", task->id);
-+ "h2_secondary_in(%s): read returned", task->id);
- }
- if (APR_STATUS_IS_EAGAIN(status)
- && (mode == AP_MODE_GETLINE || block == APR_BLOCK_READ)) {
-@@ -310,11 +293,9 @@
- }
- }
-
-- /* Nothing there, no more data to get. Return APR_EAGAIN on
-- * speculative reads, this is ap_check_pipeline()'s trick to
-- * see if the connection needs closing. */
-+ /* Nothing there, no more data to get. Return. */
- if (status == APR_EOF && APR_BRIGADE_EMPTY(task->input.bb)) {
-- return (mode == AP_MODE_SPECULATIVE)? APR_EAGAIN : APR_EOF;
-+ return status;
- }
-
- if (trace1) {
-@@ -325,7 +306,7 @@
- if (APR_BRIGADE_EMPTY(task->input.bb)) {
- if (trace1) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c,
-- "h2_slave_in(%s): no data", task->id);
-+ "h2_secondary_in(%s): no data", task->id);
- }
- return (block == APR_NONBLOCK_READ)? APR_EAGAIN : APR_EOF;
- }
-@@ -353,7 +334,7 @@
- buffer[len] = 0;
- if (trace1) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c,
-- "h2_slave_in(%s): getline: %s",
-+ "h2_secondary_in(%s): getline: %s",
- task->id, buffer);
- }
- }
-@@ -363,7 +344,7 @@
- * to support it. Seems to work. */
- ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOTIMPL, f->c,
- APLOGNO(03472)
-- "h2_slave_in(%s), unsupported READ mode %d",
-+ "h2_secondary_in(%s), unsupported READ mode %d",
- task->id, mode);
- status = APR_ENOTIMPL;
- }
-@@ -371,19 +352,19 @@
- if (trace1) {
- apr_brigade_length(bb, 0, &bblen);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c,
-- "h2_slave_in(%s): %ld data bytes", task->id, (long)bblen);
-+ "h2_secondary_in(%s): %ld data bytes", task->id, (long)bblen);
- }
- return status;
- }
-
--static apr_status_t h2_filter_slave_output(ap_filter_t* filter,
-- apr_bucket_brigade* brigade)
-+static apr_status_t h2_filter_secondary_output(ap_filter_t* filter,
-+ apr_bucket_brigade* brigade)
- {
-- h2_task *task = h2_ctx_cget_task(filter->c);
-+ h2_task *task = h2_ctx_get_task(filter->c);
- apr_status_t status;
-
- ap_assert(task);
-- status = slave_out(task, filter, brigade);
-+ status = secondary_out(task, filter, brigade);
- if (status != APR_SUCCESS) {
- h2_task_rst(task, H2_ERR_INTERNAL_ERROR);
- }
-@@ -392,14 +373,14 @@
-
- static apr_status_t h2_filter_parse_h1(ap_filter_t* f, apr_bucket_brigade* bb)
- {
-- h2_task *task = h2_ctx_cget_task(f->c);
-+ h2_task *task = h2_ctx_get_task(f->c);
- apr_status_t status;
-
- ap_assert(task);
- /* There are cases where we need to parse a serialized http/1.1
- * response. One example is a 100-continue answer in serialized mode
- * or via a mod_proxy setup */
-- while (bb && !task->output.sent_response) {
-+ while (bb && !task->c->aborted && !task->output.sent_response) {
- status = h2_from_h1_parse_response(task, f, bb);
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, f->c,
- "h2_task(%s): parsed response", task->id);
-@@ -425,8 +406,15 @@
- || !strcmp("OPTIONS", task->request->method));
- }
-
-+int h2_task_has_started(h2_task *task)
-+{
-+ return task && task->started_at != 0;
-+}
-+
- void h2_task_redo(h2_task *task)
- {
-+ task->started_at = 0;
-+ task->worker_done = 0;
- task->rst_error = 0;
- }
-
-@@ -468,9 +456,9 @@
- ap_hook_process_connection(h2_task_process_conn,
- NULL, NULL, APR_HOOK_FIRST);
-
-- ap_register_input_filter("H2_SLAVE_IN", h2_filter_slave_in,
-+ ap_register_input_filter("H2_SECONDARY_IN", h2_filter_secondary_in,
- NULL, AP_FTYPE_NETWORK);
-- ap_register_output_filter("H2_SLAVE_OUT", h2_filter_slave_output,
-+ ap_register_output_filter("H2_SECONDARY_OUT", h2_filter_secondary_output,
- NULL, AP_FTYPE_NETWORK);
- ap_register_output_filter("H2_PARSE_H1", h2_filter_parse_h1,
- NULL, AP_FTYPE_NETWORK);
-@@ -502,17 +490,17 @@
-
- ctx = h2_ctx_get(c, 0);
- (void)arg;
-- if (h2_ctx_is_task(ctx)) {
-+ if (ctx->task) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
-- "h2_slave(%s), pre_connection, adding filters", c->log_id);
-- ap_add_input_filter("H2_SLAVE_IN", NULL, NULL, c);
-+ "h2_secondary(%s), pre_connection, adding filters", c->log_id);
-+ ap_add_input_filter("H2_SECONDARY_IN", NULL, NULL, c);
- ap_add_output_filter("H2_PARSE_H1", NULL, NULL, c);
-- ap_add_output_filter("H2_SLAVE_OUT", NULL, NULL, c);
-+ ap_add_output_filter("H2_SECONDARY_OUT", NULL, NULL, c);
- }
- return OK;
- }
-
--h2_task *h2_task_create(conn_rec *slave, int stream_id,
-+h2_task *h2_task_create(conn_rec *secondary, int stream_id,
- const h2_request *req, h2_mplx *m,
- h2_bucket_beam *input,
- apr_interval_time_t timeout,
-@@ -521,17 +509,18 @@
- apr_pool_t *pool;
- h2_task *task;
-
-- ap_assert(slave);
-+ ap_assert(secondary);
- ap_assert(req);
-
-- apr_pool_create(&pool, slave->pool);
-+ apr_pool_create(&pool, secondary->pool);
-+ apr_pool_tag(pool, "h2_task");
- task = apr_pcalloc(pool, sizeof(h2_task));
- if (task == NULL) {
- return NULL;
- }
- task->id = "000";
- task->stream_id = stream_id;
-- task->c = slave;
-+ task->c = secondary;
- task->mplx = m;
- task->pool = pool;
- task->request = req;
-@@ -564,41 +553,40 @@
- ap_assert(task);
- c = task->c;
- task->worker_started = 1;
-- task->started_at = apr_time_now();
-
- if (c->master) {
-- /* Each conn_rec->id is supposed to be unique at a point in time. Since
-+ /* See the discussion at <https://github.com/icing/mod_h2/issues/195>
-+ *
-+ * Each conn_rec->id is supposed to be unique at a point in time. Since
- * some modules (and maybe external code) uses this id as an identifier
-- * for the request_rec they handle, it needs to be unique for slave
-+ * for the request_rec they handle, it needs to be unique for secondary
- * connections also.
-- * The connection id is generated by the MPM and most MPMs use the formula
-- * id := (child_num * max_threads) + thread_num
-- * which means that there is a maximum id of about
-- * idmax := max_child_count * max_threads
-- * If we assume 2024 child processes with 2048 threads max, we get
-- * idmax ~= 2024 * 2048 = 2 ** 22
-- * On 32 bit systems, we have not much space left, but on 64 bit systems
-- * (and higher?) we can use the upper 32 bits without fear of collision.
-- * 32 bits is just what we need, since a connection can only handle so
-- * many streams.
-+ *
-+ * The MPM module assigns the connection ids and mod_unique_id is using
-+ * that one to generate identifier for requests. While the implementation
-+ * works for HTTP/1.x, the parallel execution of several requests per
-+ * connection will generate duplicate identifiers on load.
-+ *
-+ * The original implementation for secondary connection identifiers used
-+ * to shift the master connection id up and assign the stream id to the
-+ * lower bits. This was cramped on 32 bit systems, but on 64bit there was
-+ * enough space.
-+ *
-+ * As issue 195 showed, mod_unique_id only uses the lower 32 bit of the
-+ * connection id, even on 64bit systems. Therefore collisions in request ids.
-+ *
-+ * The way master connection ids are generated, there is some space "at the
-+ * top" of the lower 32 bits on allmost all systems. If you have a setup
-+ * with 64k threads per child and 255 child processes, you live on the edge.
-+ *
-+ * The new implementation shifts 8 bits and XORs in the worker
-+ * id. This will experience collisions with > 256 h2 workers and heavy
-+ * load still. There seems to be no way to solve this in all possible
-+ * configurations by mod_h2 alone.
- */
-- int slave_id, free_bits;
--
-+ task->c->id = (c->master->id << 8)^worker_id;
- task->id = apr_psprintf(task->pool, "%ld-%d", c->master->id,
- task->stream_id);
-- if (sizeof(unsigned long) >= 8) {
-- free_bits = 32;
-- slave_id = task->stream_id;
-- }
-- else {
-- /* Assume we have a more limited number of threads/processes
-- * and h2 workers on a 32-bit system. Use the worker instead
-- * of the stream id. */
-- free_bits = 8;
-- slave_id = worker_id;
-- }
-- task->c->id = (c->master->id << free_bits)^slave_id;
-- c->keepalive = AP_CONN_KEEPALIVE;
- }
-
- h2_beam_create(&task->output.beam, c->pool, task->stream_id, "output",
-@@ -613,7 +601,7 @@
- h2_ctx_create_for(c, task);
- apr_table_setn(c->notes, H2_TASK_ID_NOTE, task->id);
-
-- h2_slave_run_pre_connection(c, ap_get_conn_socket(c));
-+ h2_secondary_run_pre_connection(c, ap_get_conn_socket(c));
-
- task->input.bb = apr_brigade_create(task->pool, c->bucket_alloc);
- if (task->request->serialize) {
-@@ -633,18 +621,9 @@
- task->c->current_thread = thread;
- ap_run_process_connection(c);
-
-- if (task->frozen) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "h2_task(%s): process_conn returned frozen task",
-- task->id);
-- /* cleanup delayed */
-- return APR_EAGAIN;
-- }
-- else {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "h2_task(%s): processing done", task->id);
-- return output_finish(task);
-- }
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-+ "h2_task(%s): processing done", task->id);
-+ return output_finish(task);
- }
-
- static apr_status_t h2_task_process_request(h2_task *task, conn_rec *c)
-@@ -682,14 +661,8 @@
-
- ap_process_request(r);
-
-- if (task->frozen) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "h2_task(%s): process_request frozen", task->id);
-- }
-- else {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "h2_task(%s): process_request done", task->id);
-- }
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-+ "h2_task(%s): process_request done", task->id);
-
- /* After the call to ap_process_request, the
- * request pool may have been deleted. We set
-@@ -724,7 +697,7 @@
- }
-
- ctx = h2_ctx_get(c, 0);
-- if (h2_ctx_is_task(ctx)) {
-+ if (ctx->task) {
- if (!ctx->task->request->serialize) {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
- "h2_h2, processing request directly");
-@@ -736,33 +709,8 @@
- }
- else {
- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "slave_conn(%ld): has no task", c->id);
-+ "secondary_conn(%ld): has no task", c->id);
- }
- return DECLINED;
- }
-
--apr_status_t h2_task_freeze(h2_task *task)
--{
-- if (!task->frozen) {
-- task->frozen = 1;
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03406)
-- "h2_task(%s), frozen", task->id);
-- }
-- return APR_SUCCESS;
--}
--
--apr_status_t h2_task_thaw(h2_task *task)
--{
-- if (task->frozen) {
-- task->frozen = 0;
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03407)
-- "h2_task(%s), thawed", task->id);
-- }
-- task->thawed = 1;
-- return APR_SUCCESS;
--}
--
--int h2_task_has_thawed(h2_task *task)
--{
-- return task->thawed;
--}
---- a/modules/http2/h2_task.h
-+++ b/modules/http2/h2_task.h
-@@ -35,14 +35,13 @@
- *
- * Finally, to keep certain connection level filters, such as ourselves and
- * especially mod_ssl ones, from messing with our data, we need a filter
-- * of our own to disble those.
-+ * of our own to disable those.
- */
-
- struct h2_bucket_beam;
- struct h2_conn;
- struct h2_mplx;
- struct h2_task;
--struct h2_req_engine;
- struct h2_request;
- struct h2_response_parser;
- struct h2_stream;
-@@ -80,20 +79,18 @@
- struct h2_mplx *mplx;
-
- unsigned int filters_set : 1;
-- unsigned int frozen : 1;
-- unsigned int thawed : 1;
- unsigned int worker_started : 1; /* h2_worker started processing */
-- unsigned int worker_done : 1; /* h2_worker finished */
-+ unsigned int redo : 1; /* was throttled, should be restarted later */
-+
-+ int worker_done; /* h2_worker finished */
-+ int done_done; /* task_done has been handled */
-
- apr_time_t started_at; /* when processing started */
- apr_time_t done_at; /* when processing was done */
- apr_bucket *eor;
--
-- struct h2_req_engine *engine; /* engine hosted by this task */
-- struct h2_req_engine *assigned; /* engine that task has been assigned to */
- };
-
--h2_task *h2_task_create(conn_rec *slave, int stream_id,
-+h2_task *h2_task_create(conn_rec *secondary, int stream_id,
- const h2_request *req, struct h2_mplx *m,
- struct h2_bucket_beam *input,
- apr_interval_time_t timeout,
-@@ -105,6 +102,7 @@
-
- void h2_task_redo(h2_task *task);
- int h2_task_can_redo(h2_task *task);
-+int h2_task_has_started(h2_task *task);
-
- /**
- * Reset the task with the given error code, resets all input/output.
-@@ -120,8 +118,4 @@
- extern APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_in) *h2_task_logio_add_bytes_in;
- extern APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_out) *h2_task_logio_add_bytes_out;
-
--apr_status_t h2_task_freeze(h2_task *task);
--apr_status_t h2_task_thaw(h2_task *task);
--int h2_task_has_thawed(h2_task *task);
--
- #endif /* defined(__mod_h2__h2_task__) */
---- a/modules/http2/h2_util.c
-+++ b/modules/http2/h2_util.c
-@@ -638,15 +638,6 @@
- apr_status_t rv;
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- fifo->aborted = 1;
-- apr_thread_mutex_unlock(fifo->lock);
-- }
-- return rv;
--}
--
--apr_status_t h2_fifo_interrupt(h2_fifo *fifo)
--{
-- apr_status_t rv;
-- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- apr_thread_cond_broadcast(fifo->not_empty);
- apr_thread_cond_broadcast(fifo->not_full);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -710,10 +701,6 @@
- {
- apr_status_t rv;
-
-- if (fifo->aborted) {
-- return APR_EOF;
-- }
--
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- rv = fifo_push_int(fifo, elem, block);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -754,10 +741,6 @@
- {
- apr_status_t rv;
-
-- if (fifo->aborted) {
-- return APR_EOF;
-- }
--
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- rv = pull_head(fifo, pelem, block);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -946,15 +929,6 @@
- apr_status_t rv;
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- fifo->aborted = 1;
-- apr_thread_mutex_unlock(fifo->lock);
-- }
-- return rv;
--}
--
--apr_status_t h2_ififo_interrupt(h2_ififo *fifo)
--{
-- apr_status_t rv;
-- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- apr_thread_cond_broadcast(fifo->not_empty);
- apr_thread_cond_broadcast(fifo->not_full);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -1018,10 +992,6 @@
- {
- apr_status_t rv;
-
-- if (fifo->aborted) {
-- return APR_EOF;
-- }
--
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- rv = ififo_push_int(fifo, id, block);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -1062,10 +1032,6 @@
- {
- apr_status_t rv;
-
-- if (fifo->aborted) {
-- return APR_EOF;
-- }
--
- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
- rv = ipull_head(fifo, pi, block);
- apr_thread_mutex_unlock(fifo->lock);
-@@ -1088,10 +1054,6 @@
- apr_status_t rv;
- int id;
-
-- if (fifo->aborted) {
-- return APR_EOF;
-- }
--
- if (APR_SUCCESS == (rv = apr_thread_mutex_lock(fifo->lock))) {
- if (APR_SUCCESS == (rv = ipull_head(fifo, &id, block))) {
- switch (fn(id, ctx)) {
-@@ -1117,39 +1079,40 @@
- return ififo_peek(fifo, fn, ctx, 0);
- }
-
--apr_status_t h2_ififo_remove(h2_ififo *fifo, int id)
-+static apr_status_t ififo_remove(h2_ififo *fifo, int id)
- {
-- apr_status_t rv;
-+ int rc, i;
-
- if (fifo->aborted) {
- return APR_EOF;
- }
-
-- if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
-- int i, rc;
-- int e;
--
-- rc = 0;
-- for (i = 0; i < fifo->count; ++i) {
-- e = fifo->elems[inth_index(fifo, i)];
-- if (e == id) {
-- ++rc;
-- }
-- else if (rc) {
-- fifo->elems[inth_index(fifo, i-rc)] = e;
-- }
-- }
-- if (rc) {
-- fifo->count -= rc;
-- if (fifo->count + rc == fifo->nelems) {
-- apr_thread_cond_broadcast(fifo->not_full);
-- }
-- rv = APR_SUCCESS;
-+ rc = 0;
-+ for (i = 0; i < fifo->count; ++i) {
-+ int e = fifo->elems[inth_index(fifo, i)];
-+ if (e == id) {
-+ ++rc;
- }
-- else {
-- rv = APR_EAGAIN;
-+ else if (rc) {
-+ fifo->elems[inth_index(fifo, i-rc)] = e;
- }
--
-+ }
-+ if (!rc) {
-+ return APR_EAGAIN;
-+ }
-+ fifo->count -= rc;
-+ if (fifo->count + rc == fifo->nelems) {
-+ apr_thread_cond_broadcast(fifo->not_full);
-+ }
-+ return APR_SUCCESS;
-+}
-+
-+apr_status_t h2_ififo_remove(h2_ififo *fifo, int id)
-+{
-+ apr_status_t rv;
-+
-+ if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
-+ rv = ififo_remove(fifo, id);
- apr_thread_mutex_unlock(fifo->lock);
- }
- return rv;
-@@ -1373,7 +1336,7 @@
- return status;
- }
- else if (blen == 0) {
-- /* brigade without data, does it have an EOS bucket somwhere? */
-+ /* brigade without data, does it have an EOS bucket somewhere? */
- *plen = 0;
- *peos = h2_util_has_eos(bb, -1);
- }
-@@ -1840,22 +1803,29 @@
- }
-
- apr_status_t h2_req_add_header(apr_table_t *headers, apr_pool_t *pool,
-- const char *name, size_t nlen,
-- const char *value, size_t vlen)
-+ const char *name, size_t nlen,
-+ const char *value, size_t vlen,
-+ size_t max_field_len, int *pwas_added)
- {
- char *hname, *hvalue;
-+ const char *existing;
-
-+ *pwas_added = 0;
- if (h2_req_ignore_header(name, nlen)) {
- return APR_SUCCESS;
- }
- else if (H2_HD_MATCH_LIT("cookie", name, nlen)) {
-- const char *existing = apr_table_get(headers, "cookie");
-+ existing = apr_table_get(headers, "cookie");
- if (existing) {
- char *nval;
-
- /* Cookie header come separately in HTTP/2, but need
- * to be merged by "; " (instead of default ", ")
- */
-+ if (max_field_len && strlen(existing) + vlen + nlen + 4 > max_field_len) {
-+ /* "key: oldval, nval" is too long */
-+ return APR_EINVAL;
-+ }
- hvalue = apr_pstrndup(pool, value, vlen);
- nval = apr_psprintf(pool, "%s; %s", existing, hvalue);
- apr_table_setn(headers, "Cookie", nval);
-@@ -1869,8 +1839,16 @@
- }
-
- hname = apr_pstrndup(pool, name, nlen);
-- hvalue = apr_pstrndup(pool, value, vlen);
- h2_util_camel_case_header(hname, nlen);
-+ existing = apr_table_get(headers, hname);
-+ if (max_field_len) {
-+ if ((existing? strlen(existing)+2 : 0) + vlen + nlen + 2 > max_field_len) {
-+ /* "key: (oldval, )?nval" is too long */
-+ return APR_EINVAL;
-+ }
-+ }
-+ if (!existing) *pwas_added = 1;
-+ hvalue = apr_pstrndup(pool, value, vlen);
- apr_table_mergen(headers, hname, hvalue);
-
- return APR_SUCCESS;
-@@ -1960,7 +1938,8 @@
- case NGHTTP2_GOAWAY: {
- size_t len = (frame->goaway.opaque_data_len < s_len)?
- frame->goaway.opaque_data_len : s_len-1;
-- memcpy(scratch, frame->goaway.opaque_data, len);
-+ if (len)
-+ memcpy(scratch, frame->goaway.opaque_data, len);
- scratch[len] = '\0';
- return apr_snprintf(buffer, maxlen, "GOAWAY[error=%d, reason='%s', "
- "last_stream=%d]", frame->goaway.error_code,
---- a/modules/http2/h2_util.h
-+++ b/modules/http2/h2_util.h
-@@ -209,7 +209,6 @@
- apr_status_t h2_fifo_set_create(h2_fifo **pfifo, apr_pool_t *pool, int capacity);
-
- apr_status_t h2_fifo_term(h2_fifo *fifo);
--apr_status_t h2_fifo_interrupt(h2_fifo *fifo);
-
- int h2_fifo_count(h2_fifo *fifo);
-
-@@ -229,7 +228,7 @@
-
- typedef enum {
- H2_FIFO_OP_PULL, /* pull the element from the queue, ie discard it */
-- H2_FIFO_OP_REPUSH, /* pull and immediatley re-push it */
-+ H2_FIFO_OP_REPUSH, /* pull and immediately re-push it */
- } h2_fifo_op_t;
-
- typedef h2_fifo_op_t h2_fifo_peek_fn(void *head, void *ctx);
-@@ -280,7 +279,6 @@
- apr_status_t h2_ififo_set_create(h2_ififo **pfifo, apr_pool_t *pool, int capacity);
-
- apr_status_t h2_ififo_term(h2_ififo *fifo);
--apr_status_t h2_ififo_interrupt(h2_ififo *fifo);
-
- int h2_ififo_count(h2_ififo *fifo);
-
-@@ -412,9 +410,14 @@
- apr_status_t h2_req_create_ngheader(h2_ngheader **ph, apr_pool_t *p,
- const struct h2_request *req);
-
-+/**
-+ * Add a HTTP/2 header and return the table key if it really was added
-+ * and not ignored.
-+ */
- apr_status_t h2_req_add_header(apr_table_t *headers, apr_pool_t *pool,
- const char *name, size_t nlen,
-- const char *value, size_t vlen);
-+ const char *value, size_t vlen,
-+ size_t max_field_len, int *pwas_added);
-
- /*******************************************************************************
- * h2_request helpers
---- a/modules/http2/h2_version.h
-+++ b/modules/http2/h2_version.h
-@@ -27,7 +27,7 @@
- * @macro
- * Version number of the http2 module as c string
- */
--#define MOD_HTTP2_VERSION "1.11.4"
-+#define MOD_HTTP2_VERSION "1.15.14"
-
- /**
- * @macro
-@@ -35,7 +35,6 @@
- * release. This is a 24 bit number with 8 bits for major number, 8 bits
- * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
- */
--#define MOD_HTTP2_VERSION_NUM 0x010b04
--
-+#define MOD_HTTP2_VERSION_NUM 0x010f0e
-
- #endif /* mod_h2_h2_version_h */
---- a/modules/http2/h2_workers.c
-+++ b/modules/http2/h2_workers.c
-@@ -155,7 +155,7 @@
- {
- apr_status_t rv;
-
-- rv = h2_mplx_pop_task(m, &slot->task);
-+ rv = h2_mplx_s_pop_task(m, &slot->task);
- if (slot->task) {
- /* Ok, we got something to give back to the worker for execution.
- * If we still have idle workers, we let the worker be sticky,
-@@ -234,10 +234,10 @@
- * mplx the opportunity to give us back a new task right away.
- */
- if (!slot->aborted && (--slot->sticks > 0)) {
-- h2_mplx_task_done(slot->task->mplx, slot->task, &slot->task);
-+ h2_mplx_s_task_done(slot->task->mplx, slot->task, &slot->task);
- }
- else {
-- h2_mplx_task_done(slot->task->mplx, slot->task, NULL);
-+ h2_mplx_s_task_done(slot->task->mplx, slot->task, NULL);
- slot->task = NULL;
- }
- }
-@@ -269,7 +269,6 @@
- }
-
- h2_fifo_term(workers->mplxs);
-- h2_fifo_interrupt(workers->mplxs);
-
- cleanup_zombies(workers);
- }
---- a/modules/http2/mod_http2.c
-+++ b/modules/http2/mod_http2.c
-@@ -172,27 +172,6 @@
- conn_rec *, request_rec *, char *name);
- static int http2_is_h2(conn_rec *);
-
--static apr_status_t http2_req_engine_push(const char *ngn_type,
-- request_rec *r,
-- http2_req_engine_init *einit)
--{
-- return h2_mplx_req_engine_push(ngn_type, r, einit);
--}
--
--static apr_status_t http2_req_engine_pull(h2_req_engine *ngn,
-- apr_read_type_e block,
-- int capacity,
-- request_rec **pr)
--{
-- return h2_mplx_req_engine_pull(ngn, block, capacity, pr);
--}
--
--static void http2_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn,
-- apr_status_t status)
--{
-- h2_mplx_req_engine_done(ngn, r_conn, status);
--}
--
- static void http2_get_num_workers(server_rec *s, int *minw, int *maxw)
- {
- h2_get_num_workers(s, minw, maxw);
-@@ -220,9 +199,6 @@
-
- APR_REGISTER_OPTIONAL_FN(http2_is_h2);
- APR_REGISTER_OPTIONAL_FN(http2_var_lookup);
-- APR_REGISTER_OPTIONAL_FN(http2_req_engine_push);
-- APR_REGISTER_OPTIONAL_FN(http2_req_engine_pull);
-- APR_REGISTER_OPTIONAL_FN(http2_req_engine_done);
- APR_REGISTER_OPTIONAL_FN(http2_get_num_workers);
-
- ap_log_perror(APLOG_MARK, APLOG_TRACE1, 0, pool, "installing hooks");
-@@ -260,9 +236,8 @@
- {
- if (ctx) {
- if (r) {
-- h2_task *task = h2_ctx_get_task(ctx);
-- if (task) {
-- h2_stream *stream = h2_mplx_stream_get(task->mplx, task->stream_id);
-+ if (ctx->task) {
-+ h2_stream *stream = h2_mplx_t_stream_get(ctx->task->mplx, ctx->task);
- if (stream && stream->push_policy != H2_PUSH_NONE) {
- return "on";
- }
-@@ -273,8 +248,7 @@
- }
- }
- else if (s) {
-- const h2_config *cfg = h2_config_sget(s);
-- if (cfg && h2_config_geti(cfg, H2_CONF_PUSH)) {
-+ if (h2_config_geti(r, s, H2_CONF_PUSH)) {
- return "on";
- }
- }
-@@ -285,8 +259,7 @@
- conn_rec *c, request_rec *r, h2_ctx *ctx)
- {
- if (ctx) {
-- h2_task *task = h2_ctx_get_task(ctx);
-- if (task && !H2_STREAM_CLIENT_INITIATED(task->stream_id)) {
-+ if (ctx->task && !H2_STREAM_CLIENT_INITIATED(ctx->task->stream_id)) {
- return "PUSHED";
- }
- }
-@@ -297,9 +270,8 @@
- conn_rec *c, request_rec *r, h2_ctx *ctx)
- {
- if (ctx) {
-- h2_task *task = h2_ctx_get_task(ctx);
-- if (task && !H2_STREAM_CLIENT_INITIATED(task->stream_id)) {
-- h2_stream *stream = h2_mplx_stream_get(task->mplx, task->stream_id);
-+ if (ctx->task && !H2_STREAM_CLIENT_INITIATED(ctx->task->stream_id)) {
-+ h2_stream *stream = h2_mplx_t_stream_get(ctx->task->mplx, ctx->task);
- if (stream) {
- return apr_itoa(p, stream->initiated_on);
- }
-@@ -312,9 +284,8 @@
- conn_rec *c, request_rec *r, h2_ctx *ctx)
- {
- if (ctx) {
-- h2_task *task = h2_ctx_get_task(ctx);
-- if (task) {
-- return task->id;
-+ if (ctx->task) {
-+ return ctx->task->id;
- }
- }
- return "";
-@@ -366,7 +337,7 @@
- for (i = 0; i < H2_ALEN(H2_VARS); ++i) {
- h2_var_def *vdef = &H2_VARS[i];
- if (!strcmp(vdef->name, name)) {
-- h2_ctx *ctx = (r? h2_ctx_rget(r) :
-+ h2_ctx *ctx = (r? h2_ctx_get(c, 0) :
- h2_ctx_get(c->master? c->master : c, 0));
- return (char *)vdef->lookup(p, s, c, r, ctx);
- }
-@@ -377,7 +348,7 @@
- static int h2_h2_fixups(request_rec *r)
- {
- if (r->connection->master) {
-- h2_ctx *ctx = h2_ctx_rget(r);
-+ h2_ctx *ctx = h2_ctx_get(r->connection, 0);
- int i;
-
- for (i = 0; ctx && i < H2_ALEN(H2_VARS); ++i) {
---- a/modules/http2/mod_http2.dep
-+++ b/modules/http2/mod_http2.dep
-@@ -694,7 +694,6 @@
- ".\h2_ctx.h"\
- ".\h2_h2.h"\
- ".\h2_mplx.h"\
-- ".\h2_ngn_shed.h"\
- ".\h2_private.h"\
- ".\h2_request.h"\
- ".\h2_stream.h"\
-@@ -754,7 +753,6 @@
- ".\h2_ctx.h"\
- ".\h2_h2.h"\
- ".\h2_mplx.h"\
-- ".\h2_ngn_shed.h"\
- ".\h2_private.h"\
- ".\h2_request.h"\
- ".\h2_task.h"\
---- a/modules/http2/mod_http2.dsp
-+++ b/modules/http2/mod_http2.dsp
-@@ -145,10 +145,6 @@
- # End Source File
- # Begin Source File
-
--SOURCE=./h2_ngn_shed.c
--# End Source File
--# Begin Source File
--
- SOURCE=./h2_push.c
- # End Source File
- # Begin Source File
---- a/modules/http2/mod_http2.h
-+++ b/modules/http2/mod_http2.h
-@@ -30,22 +30,20 @@
-
-
- /*******************************************************************************
-- * HTTP/2 request engines
-+ * START HTTP/2 request engines (DEPRECATED)
- ******************************************************************************/
-+
-+/* The following functions were introduced for the experimental mod_proxy_http2
-+ * support, but have been abandoned since.
-+ * They are still declared here for backward compatibility, in case someone
-+ * tries to build an old mod_proxy_http2 against it, but will disappear
-+ * completely sometime in the future.
-+ */
-
- struct apr_thread_cond_t;
--
- typedef struct h2_req_engine h2_req_engine;
--
- typedef void http2_output_consumed(void *ctx, conn_rec *c, apr_off_t consumed);
-
--/**
-- * Initialize a h2_req_engine. The structure will be passed in but
-- * only the name and master are set. The function should initialize
-- * all fields.
-- * @param engine the allocated, partially filled structure
-- * @param r the first request to process, or NULL
-- */
- typedef apr_status_t http2_req_engine_init(h2_req_engine *engine,
- const char *id,
- const char *type,
-@@ -55,35 +53,11 @@
- http2_output_consumed **pconsumed,
- void **pbaton);
-
--/**
-- * Push a request to an engine with the specified name for further processing.
-- * If no such engine is available, einit is not NULL, einit is called
-- * with a new engine record and the caller is responsible for running the
-- * new engine instance.
-- * @param engine_type the type of the engine to add the request to
-- * @param r the request to push to an engine for processing
-- * @param einit an optional initialization callback for a new engine
-- * of the requested type, should no instance be available.
-- * By passing a non-NULL callback, the caller is willing
-- * to init and run a new engine itself.
-- * @return APR_SUCCESS iff slave was successfully added to an engine
-- */
- APR_DECLARE_OPTIONAL_FN(apr_status_t,
- http2_req_engine_push, (const char *engine_type,
- request_rec *r,
- http2_req_engine_init *einit));
-
--/**
-- * Get a new request for processing in this engine.
-- * @param engine the engine which is done processing the slave
-- * @param block if call should block waiting for request to come
-- * @param capacity how many parallel requests are acceptable
-- * @param pr the request that needs processing or NULL
-- * @return APR_SUCCESS if new request was assigned
-- * APR_EAGAIN if no new request is available
-- * APR_EOF if engine may shut down, as no more request will be scheduled
-- * APR_ECONNABORTED if the engine needs to shut down immediately
-- */
- APR_DECLARE_OPTIONAL_FN(apr_status_t,
- http2_req_engine_pull, (h2_req_engine *engine,
- apr_read_type_e block,
-@@ -98,4 +72,8 @@
- http2_get_num_workers, (server_rec *s,
- int *minw, int *max));
-
-+/*******************************************************************************
-+ * END HTTP/2 request engines (DEPRECATED)
-+ ******************************************************************************/
-+
- #endif
---- a/modules/http2/mod_http2.mak
-+++ b/modules/http2/mod_http2.mak
-@@ -61,7 +61,6 @@
- -@erase "$(INTDIR)\h2_h2.obj"
- -@erase "$(INTDIR)\h2_headers.obj"
- -@erase "$(INTDIR)\h2_mplx.obj"
-- -@erase "$(INTDIR)\h2_ngn_shed.obj"
- -@erase "$(INTDIR)\h2_push.obj"
- -@erase "$(INTDIR)\h2_request.obj"
- -@erase "$(INTDIR)\h2_session.obj"
-@@ -138,7 +137,6 @@
- "$(INTDIR)\h2_h2.obj" \
- "$(INTDIR)\h2_headers.obj" \
- "$(INTDIR)\h2_mplx.obj" \
-- "$(INTDIR)\h2_ngn_shed.obj" \
- "$(INTDIR)\h2_push.obj" \
- "$(INTDIR)\h2_request.obj" \
- "$(INTDIR)\h2_session.obj" \
-@@ -207,7 +205,6 @@
- -@erase "$(INTDIR)\h2_h2.obj"
- -@erase "$(INTDIR)\h2_headers.obj"
- -@erase "$(INTDIR)\h2_mplx.obj"
-- -@erase "$(INTDIR)\h2_ngn_shed.obj"
- -@erase "$(INTDIR)\h2_push.obj"
- -@erase "$(INTDIR)\h2_request.obj"
- -@erase "$(INTDIR)\h2_session.obj"
-@@ -284,7 +281,6 @@
- "$(INTDIR)\h2_h2.obj" \
- "$(INTDIR)\h2_headers.obj" \
- "$(INTDIR)\h2_mplx.obj" \
-- "$(INTDIR)\h2_ngn_shed.obj" \
- "$(INTDIR)\h2_push.obj" \
- "$(INTDIR)\h2_request.obj" \
- "$(INTDIR)\h2_session.obj" \
-@@ -469,11 +465,6 @@
- "$(INTDIR)\h2_mplx.obj" : $(SOURCE) "$(INTDIR)"
-
-
--SOURCE=./h2_ngn_shed.c
--
--"$(INTDIR)\h2_ngn_shed.obj" : $(SOURCE) "$(INTDIR)"
--
--
- SOURCE=./h2_push.c
-
- "$(INTDIR)\h2_push.obj" : $(SOURCE) "$(INTDIR)"
---- a/modules/http2/mod_proxy_http2.c
-+++ b/modules/http2/mod_proxy_http2.c
-@@ -16,13 +16,14 @@
-
- #include <nghttp2/nghttp2.h>
-
-+#include <ap_mmn.h>
- #include <httpd.h>
- #include <mod_proxy.h>
- #include "mod_http2.h"
-
-
- #include "mod_proxy_http2.h"
--#include "h2_request.h"
-+#include "h2.h"
- #include "h2_proxy_util.h"
- #include "h2_version.h"
- #include "h2_proxy_session.h"
-@@ -46,19 +47,12 @@
-
- /* Optional functions from mod_http2 */
- static int (*is_h2)(conn_rec *c);
--static apr_status_t (*req_engine_push)(const char *name, request_rec *r,
-- http2_req_engine_init *einit);
--static apr_status_t (*req_engine_pull)(h2_req_engine *engine,
-- apr_read_type_e block,
-- int capacity,
-- request_rec **pr);
--static void (*req_engine_done)(h2_req_engine *engine, conn_rec *r_conn,
-- apr_status_t status);
--
-+
- typedef struct h2_proxy_ctx {
-+ const char *id;
-+ conn_rec *master;
- conn_rec *owner;
- apr_pool_t *pool;
-- request_rec *rbase;
- server_rec *server;
- const char *proxy_func;
- char server_portstr[32];
-@@ -66,19 +60,15 @@
- proxy_worker *worker;
- proxy_server_conf *conf;
-
-- h2_req_engine *engine;
-- const char *engine_id;
-- const char *engine_type;
-- apr_pool_t *engine_pool;
- apr_size_t req_buffer_size;
-- h2_proxy_fifo *requests;
- int capacity;
-
-- unsigned standalone : 1;
- unsigned is_ssl : 1;
-- unsigned flushall : 1;
-
-- apr_status_t r_status; /* status of our first request work */
-+ request_rec *r; /* the request processed in this ctx */
-+ apr_status_t r_status; /* status of request work */
-+ int r_done; /* request was processed, not necessarily successfully */
-+ int r_may_retry; /* request may be retried */
- h2_proxy_session *session; /* current http2 session against backend */
- } h2_proxy_ctx;
-
-@@ -104,16 +94,6 @@
- MOD_HTTP2_VERSION, ngh2? ngh2->version_str : "unknown");
-
- is_h2 = APR_RETRIEVE_OPTIONAL_FN(http2_is_h2);
-- req_engine_push = APR_RETRIEVE_OPTIONAL_FN(http2_req_engine_push);
-- req_engine_pull = APR_RETRIEVE_OPTIONAL_FN(http2_req_engine_pull);
-- req_engine_done = APR_RETRIEVE_OPTIONAL_FN(http2_req_engine_done);
--
-- /* we need all of them */
-- if (!req_engine_push || !req_engine_pull || !req_engine_done) {
-- req_engine_push = NULL;
-- req_engine_pull = NULL;
-- req_engine_done = NULL;
-- }
-
- return status;
- }
-@@ -204,45 +184,6 @@
- return OK;
- }
-
--static void out_consumed(void *baton, conn_rec *c, apr_off_t bytes)
--{
-- h2_proxy_ctx *ctx = baton;
--
-- if (ctx->session) {
-- h2_proxy_session_update_window(ctx->session, c, bytes);
-- }
--}
--
--static apr_status_t proxy_engine_init(h2_req_engine *engine,
-- const char *id,
-- const char *type,
-- apr_pool_t *pool,
-- apr_size_t req_buffer_size,
-- request_rec *r,
-- http2_output_consumed **pconsumed,
-- void **pctx)
--{
-- h2_proxy_ctx *ctx = ap_get_module_config(r->connection->conn_config,
-- &proxy_http2_module);
-- if (!ctx) {
-- ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(03368)
-- "h2_proxy_session, engine init, no ctx found");
-- return APR_ENOTIMPL;
-- }
--
-- ctx->pool = pool;
-- ctx->engine = engine;
-- ctx->engine_id = id;
-- ctx->engine_type = type;
-- ctx->engine_pool = pool;
-- ctx->req_buffer_size = req_buffer_size;
-- ctx->capacity = H2MIN(100, h2_proxy_fifo_capacity(ctx->requests));
--
-- *pconsumed = out_consumed;
-- *pctx = ctx;
-- return APR_SUCCESS;
--}
--
- static apr_status_t add_request(h2_proxy_session *session, request_rec *r)
- {
- h2_proxy_ctx *ctx = session->user_data;
-@@ -252,7 +193,7 @@
- url = apr_table_get(r->notes, H2_PROXY_REQ_URL_NOTE);
- apr_table_setn(r->notes, "proxy-source-port", apr_psprintf(r->pool, "%hu",
- ctx->p_conn->connection->local_addr->port));
-- status = h2_proxy_session_submit(session, url, r, ctx->standalone);
-+ status = h2_proxy_session_submit(session, url, r, 1);
- if (status != APR_SUCCESS) {
- ap_log_cerror(APLOG_MARK, APLOG_ERR, status, r->connection, APLOGNO(03351)
- "pass request body failed to %pI (%s) from %s (%s)",
-@@ -266,43 +207,15 @@
- static void request_done(h2_proxy_ctx *ctx, request_rec *r,
- apr_status_t status, int touched)
- {
-- const char *task_id = apr_table_get(r->connection->notes, H2_TASK_ID_NOTE);
--
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, r->connection,
-- "h2_proxy_session(%s): request done %s, touched=%d",
-- ctx->engine_id, task_id, touched);
-- if (status != APR_SUCCESS) {
-- if (!touched) {
-- /* untouched request, need rescheduling */
-- status = h2_proxy_fifo_push(ctx->requests, r);
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection,
-- APLOGNO(03369)
-- "h2_proxy_session(%s): rescheduled request %s",
-- ctx->engine_id, task_id);
-- return;
-- }
-- else {
-- const char *uri;
-- uri = apr_uri_unparse(r->pool, &r->parsed_uri, 0);
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection,
-- APLOGNO(03471) "h2_proxy_session(%s): request %s -> %s "
-- "not complete, cannot repeat",
-- ctx->engine_id, task_id, uri);
-- }
-- }
--
-- if (r == ctx->rbase) {
-+ if (r == ctx->r) {
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, r->connection,
-+ "h2_proxy_session(%s): request done, touched=%d",
-+ ctx->id, touched);
-+ ctx->r_done = 1;
-+ if (touched) ctx->r_may_retry = 0;
- ctx->r_status = ((status == APR_SUCCESS)? APR_SUCCESS
- : HTTP_SERVICE_UNAVAILABLE);
- }
--
-- if (req_engine_done && ctx->engine) {
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection,
-- APLOGNO(03370)
-- "h2_proxy_session(%s): finished request %s",
-- ctx->engine_id, task_id);
-- req_engine_done(ctx->engine, r->connection, status);
-- }
- }
-
- static void session_req_done(h2_proxy_session *session, request_rec *r,
-@@ -311,43 +224,15 @@
- request_done(session->user_data, r, status, touched);
- }
-
--static apr_status_t next_request(h2_proxy_ctx *ctx, int before_leave)
--{
-- if (h2_proxy_fifo_count(ctx->requests) > 0) {
-- return APR_SUCCESS;
-- }
-- else if (req_engine_pull && ctx->engine) {
-- apr_status_t status;
-- request_rec *r = NULL;
--
-- status = req_engine_pull(ctx->engine, before_leave?
-- APR_BLOCK_READ: APR_NONBLOCK_READ,
-- ctx->capacity, &r);
-- if (status == APR_SUCCESS && r) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, ctx->owner,
-- "h2_proxy_engine(%s): pulled request (%s) %s",
-- ctx->engine_id,
-- before_leave? "before leave" : "regular",
-- r->the_request);
-- h2_proxy_fifo_push(ctx->requests, r);
-- }
-- return APR_STATUS_IS_EAGAIN(status)? APR_SUCCESS : status;
-- }
-- return APR_EOF;
--}
--
--static apr_status_t proxy_engine_run(h2_proxy_ctx *ctx) {
-+static apr_status_t ctx_run(h2_proxy_ctx *ctx) {
- apr_status_t status = OK;
- int h2_front;
-- request_rec *r;
-
- /* Step Four: Send the Request in a new HTTP/2 stream and
- * loop until we got the response or encounter errors.
- */
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, ctx->owner,
-- "eng(%s): setup session", ctx->engine_id);
- h2_front = is_h2? is_h2(ctx->owner) : 0;
-- ctx->session = h2_proxy_session_setup(ctx->engine_id, ctx->p_conn, ctx->conf,
-+ ctx->session = h2_proxy_session_setup(ctx->id, ctx->p_conn, ctx->conf,
- h2_front, 30,
- h2_proxy_log2((int)ctx->req_buffer_size),
- session_req_done);
-@@ -358,105 +243,45 @@
- }
-
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(03373)
-- "eng(%s): run session %s", ctx->engine_id, ctx->session->id);
-+ "eng(%s): run session %s", ctx->id, ctx->session->id);
- ctx->session->user_data = ctx;
-
-- while (!ctx->owner->aborted) {
-- if (APR_SUCCESS == h2_proxy_fifo_try_pull(ctx->requests, (void**)&r)) {
-- add_request(ctx->session, r);
-- }
--
-+ ctx->r_done = 0;
-+ add_request(ctx->session, ctx->r);
-+
-+ while (!ctx->master->aborted && !ctx->r_done) {
-+
- status = h2_proxy_session_process(ctx->session);
--
-- if (status == APR_SUCCESS) {
-- apr_status_t s2;
-- /* ongoing processing, call again */
-- if (ctx->session->remote_max_concurrent > 0
-- && ctx->session->remote_max_concurrent != ctx->capacity) {
-- ctx->capacity = H2MIN((int)ctx->session->remote_max_concurrent,
-- h2_proxy_fifo_capacity(ctx->requests));
-- }
-- s2 = next_request(ctx, 0);
-- if (s2 == APR_ECONNABORTED) {
-- /* master connection gone */
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, s2, ctx->owner,
-- APLOGNO(03374) "eng(%s): pull request",
-- ctx->engine_id);
-- /* give notice that we're leaving and cancel all ongoing
-- * streams. */
-- next_request(ctx, 1);
-- h2_proxy_session_cancel_all(ctx->session);
-- h2_proxy_session_process(ctx->session);
-- status = ctx->r_status = APR_SUCCESS;
-- break;
-- }
-- if ((h2_proxy_fifo_count(ctx->requests) == 0)
-- && h2_proxy_ihash_empty(ctx->session->streams)) {
-- break;
-- }
-- }
-- else {
-- /* end of processing, maybe error */
-+ if (status != APR_SUCCESS) {
-+ /* Encountered an error during session processing */
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner,
- APLOGNO(03375) "eng(%s): end of session %s",
-- ctx->engine_id, ctx->session->id);
-- /*
-- * Any open stream of that session needs to
-+ ctx->id, ctx->session->id);
-+ /* Any open stream of that session needs to
- * a) be reopened on the new session iff safe to do so
- * b) reported as done (failed) otherwise
- */
- h2_proxy_session_cleanup(ctx->session, session_req_done);
-- break;
-+ goto out;
- }
- }
-
-- ctx->session->user_data = NULL;
-- ctx->session = NULL;
--
-- return status;
--}
--
--static apr_status_t push_request_somewhere(h2_proxy_ctx *ctx, request_rec *r)
--{
-- conn_rec *c = ctx->owner;
-- const char *engine_type, *hostname;
--
-- hostname = (ctx->p_conn->ssl_hostname?
-- ctx->p_conn->ssl_hostname : ctx->p_conn->hostname);
-- engine_type = apr_psprintf(ctx->pool, "proxy_http2 %s%s", hostname,
-- ctx->server_portstr);
--
-- if (c->master && req_engine_push && r && is_h2 && is_h2(c)) {
-- /* If we are have req_engine capabilities, push the handling of this
-- * request (e.g. slave connection) to a proxy_http2 engine which
-- * uses the same backend. We may be called to create an engine
-- * ourself. */
-- if (req_engine_push(engine_type, r, proxy_engine_init) == APR_SUCCESS) {
-- if (ctx->engine == NULL) {
-- /* request has been assigned to an engine in another thread */
-- return SUSPENDED;
-- }
-+out:
-+ if (ctx->master->aborted) {
-+ /* master connection gone */
-+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner,
-+ APLOGNO(03374) "eng(%s): master connection gone", ctx->id);
-+ /* cancel all ongoing requests */
-+ h2_proxy_session_cancel_all(ctx->session);
-+ h2_proxy_session_process(ctx->session);
-+ if (!ctx->master->aborted) {
-+ status = ctx->r_status = APR_SUCCESS;
- }
- }
-
-- if (!ctx->engine) {
-- /* No engine was available or has been initialized, handle this
-- * request just by ourself. */
-- ctx->engine_id = apr_psprintf(ctx->pool, "eng-proxy-%ld", c->id);
-- ctx->engine_type = engine_type;
-- ctx->engine_pool = ctx->pool;
-- ctx->req_buffer_size = (32*1024);
-- ctx->standalone = 1;
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "h2_proxy_http2(%ld): setup standalone engine for type %s",
-- c->id, engine_type);
-- }
-- else {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
-- "H2: hosting engine %s", ctx->engine_id);
-- }
--
-- return h2_proxy_fifo_push(ctx->requests, r);
-+ ctx->session->user_data = NULL;
-+ ctx->session = NULL;
-+ return status;
- }
-
- static int proxy_http2_handler(request_rec *r,
-@@ -466,7 +291,7 @@
- const char *proxyname,
- apr_port_t proxyport)
- {
-- const char *proxy_func;
-+ const char *proxy_func, *task_id;
- char *locurl = url, *u;
- apr_size_t slen;
- int is_ssl = 0;
-@@ -498,29 +323,35 @@
- default:
- return DECLINED;
- }
-+
-+ task_id = apr_table_get(r->connection->notes, H2_TASK_ID_NOTE);
-
- ctx = apr_pcalloc(r->pool, sizeof(*ctx));
-- ctx->owner = r->connection;
-- ctx->pool = r->pool;
-- ctx->rbase = r;
-- ctx->server = r->server;
-+ ctx->master = r->connection->master? r->connection->master : r->connection;
-+ ctx->id = task_id? task_id : apr_psprintf(r->pool, "%ld", (long)ctx->master->id);
-+ ctx->owner = r->connection;
-+ ctx->pool = r->pool;
-+ ctx->server = r->server;
- ctx->proxy_func = proxy_func;
-- ctx->is_ssl = is_ssl;
-- ctx->worker = worker;
-- ctx->conf = conf;
-- ctx->flushall = apr_table_get(r->subprocess_env, "proxy-flushall")? 1 : 0;
-- ctx->r_status = HTTP_SERVICE_UNAVAILABLE;
--
-- h2_proxy_fifo_set_create(&ctx->requests, ctx->pool, 100);
-+ ctx->is_ssl = is_ssl;
-+ ctx->worker = worker;
-+ ctx->conf = conf;
-+ ctx->req_buffer_size = (32*1024);
-+ ctx->r = r;
-+ ctx->r_status = status = HTTP_SERVICE_UNAVAILABLE;
-+ ctx->r_done = 0;
-+ ctx->r_may_retry = 1;
-
- ap_set_module_config(ctx->owner->conn_config, &proxy_http2_module, ctx);
-
- /* scheme says, this is for us. */
-- apr_table_setn(ctx->rbase->notes, H2_PROXY_REQ_URL_NOTE, url);
-- ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, ctx->rbase,
-+ apr_table_setn(ctx->r->notes, H2_PROXY_REQ_URL_NOTE, url);
-+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, ctx->r,
- "H2: serving URL %s", url);
-
- run_connect:
-+ if (ctx->master->aborted) goto cleanup;
-+
- /* Get a proxy_conn_rec from the worker, might be a new one, might
- * be one still open from another request, or it might fail if the
- * worker is stopped or in error. */
-@@ -530,25 +361,11 @@
- }
-
- ctx->p_conn->is_ssl = ctx->is_ssl;
-- if (ctx->is_ssl && ctx->p_conn->connection) {
-- /* If there are some metadata on the connection (e.g. TLS alert),
-- * let mod_ssl detect them, and create a new connection below.
-- */
-- apr_bucket_brigade *tmp_bb;
-- tmp_bb = apr_brigade_create(ctx->rbase->pool,
-- ctx->rbase->connection->bucket_alloc);
-- status = ap_get_brigade(ctx->p_conn->connection->input_filters, tmp_bb,
-- AP_MODE_SPECULATIVE, APR_NONBLOCK_READ, 1);
-- if (status != APR_SUCCESS && !APR_STATUS_IS_EAGAIN(status)) {
-- ctx->p_conn->close = 1;
-- }
-- apr_brigade_cleanup(tmp_bb);
-- }
-
- /* Step One: Determine the URL to connect to (might be a proxy),
- * initialize the backend accordingly and determine the server
- * port string we can expect in responses. */
-- if ((status = ap_proxy_determine_connection(ctx->pool, ctx->rbase, conf, worker,
-+ if ((status = ap_proxy_determine_connection(ctx->pool, ctx->r, conf, worker,
- ctx->p_conn, &uri, &locurl,
- proxyname, proxyport,
- ctx->server_portstr,
-@@ -556,17 +373,6 @@
- goto cleanup;
- }
-
-- /* If we are not already hosting an engine, try to push the request
-- * to an already existing engine or host a new engine here. */
-- if (r && !ctx->engine) {
-- ctx->r_status = push_request_somewhere(ctx, r);
-- r = NULL;
-- if (ctx->r_status == SUSPENDED) {
-- /* request was pushed to another thread, leave processing here */
-- goto cleanup;
-- }
-- }
--
- /* Step Two: Make the Connection (or check that an already existing
- * socket is still usable). On success, we have a socket connected to
- * backend->hostname. */
-@@ -575,70 +381,56 @@
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(03352)
- "H2: failed to make connection to backend: %s",
- ctx->p_conn->hostname);
-- goto reconnect;
-+ goto cleanup;
- }
-
- /* Step Three: Create conn_rec for the socket we have open now. */
-- if (!ctx->p_conn->connection) {
-- status = ap_proxy_connection_create_ex(ctx->proxy_func,
-- ctx->p_conn, ctx->rbase);
-- if (status != OK) {
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner, APLOGNO(03353)
-- "setup new connection: is_ssl=%d %s %s %s",
-- ctx->p_conn->is_ssl, ctx->p_conn->ssl_hostname,
-- locurl, ctx->p_conn->hostname);
-- goto reconnect;
-- }
--
-- if (!ctx->p_conn->data) {
-- /* New conection: set a note on the connection what CN is
-- * requested and what protocol we want */
-- if (ctx->p_conn->ssl_hostname) {
-- ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, ctx->owner,
-- "set SNI to %s for (%s)",
-- ctx->p_conn->ssl_hostname,
-- ctx->p_conn->hostname);
-- apr_table_setn(ctx->p_conn->connection->notes,
-- "proxy-request-hostname", ctx->p_conn->ssl_hostname);
-- }
-- if (ctx->is_ssl) {
-- apr_table_setn(ctx->p_conn->connection->notes,
-- "proxy-request-alpn-protos", "h2");
-- }
-- }
-+ status = ap_proxy_connection_create_ex(ctx->proxy_func, ctx->p_conn, ctx->r);
-+ if (status != OK) {
-+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner, APLOGNO(03353)
-+ "setup new connection: is_ssl=%d %s %s %s",
-+ ctx->p_conn->is_ssl, ctx->p_conn->ssl_hostname,
-+ locurl, ctx->p_conn->hostname);
-+ ctx->r_status = status;
-+ goto cleanup;
- }
--
--run_session:
-- status = proxy_engine_run(ctx);
-- if (status == APR_SUCCESS) {
-- /* session and connection still ok */
-- if (next_request(ctx, 1) == APR_SUCCESS) {
-- /* more requests, run again */
-- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(03376)
-- "run_session, again");
-- goto run_session;
-+
-+ if (!ctx->p_conn->data && ctx->is_ssl) {
-+ /* New SSL connection: set a note on the connection about what
-+ * protocol we want.
-+ */
-+ apr_table_setn(ctx->p_conn->connection->notes,
-+ "proxy-request-alpn-protos", "h2");
-+ if (ctx->p_conn->ssl_hostname) {
-+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, ctx->owner,
-+ "set SNI to %s for (%s)",
-+ ctx->p_conn->ssl_hostname,
-+ ctx->p_conn->hostname);
-+ apr_table_setn(ctx->p_conn->connection->notes,
-+ "proxy-request-hostname", ctx->p_conn->ssl_hostname);
- }
-- /* done */
-- ctx->engine = NULL;
- }
-
--reconnect:
-- if (next_request(ctx, 1) == APR_SUCCESS) {
-- /* Still more to do, tear down old conn and start over */
-+ if (ctx->master->aborted) goto cleanup;
-+ status = ctx_run(ctx);
-+
-+ if (ctx->r_status != APR_SUCCESS && ctx->r_may_retry && !ctx->master->aborted) {
-+ /* Not successfully processed, but may retry, tear down old conn and start over */
- if (ctx->p_conn) {
- ctx->p_conn->close = 1;
-- /*only in trunk so far */
-- /*proxy_run_detach_backend(r, ctx->p_conn);*/
-+#if AP_MODULE_MAGIC_AT_LEAST(20140207, 2)
-+ proxy_run_detach_backend(r, ctx->p_conn);
-+#endif
- ap_proxy_release_connection(ctx->proxy_func, ctx->p_conn, ctx->server);
- ctx->p_conn = NULL;
- }
- ++reconnects;
-- if (reconnects < 5 && !ctx->owner->aborted) {
-+ if (reconnects < 5) {
- goto run_connect;
- }
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(10023)
-- "giving up after %d reconnects, %d requests todo",
-- reconnects, h2_proxy_fifo_count(ctx->requests));
-+ "giving up after %d reconnects, request-done=%d",
-+ reconnects, ctx->r_done);
- }
-
- cleanup:
-@@ -647,17 +439,13 @@
- /* close socket when errors happened or session shut down (EOF) */
- ctx->p_conn->close = 1;
- }
-- /*only in trunk so far */
-- /*proxy_run_detach_backend(ctx->rbase, ctx->p_conn);*/
-+#if AP_MODULE_MAGIC_AT_LEAST(20140207, 2)
-+ proxy_run_detach_backend(ctx->r, ctx->p_conn);
-+#endif
- ap_proxy_release_connection(ctx->proxy_func, ctx->p_conn, ctx->server);
- ctx->p_conn = NULL;
- }
-
-- /* Any requests will still have need to fail */
-- while (APR_SUCCESS == h2_proxy_fifo_try_pull(ctx->requests, (void**)&r)) {
-- request_done(ctx, r, HTTP_SERVICE_UNAVAILABLE, 1);
-- }
--
- ap_set_module_config(ctx->owner->conn_config, &proxy_http2_module, NULL);
- ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner,
- APLOGNO(03377) "leaving handler");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 17:04:38 +0000