1 files changed, 69 insertions, 0 deletions
diff --git a/debian/vendor-h2o/lib/handler/http2_debug_state.c b/debian/vendor-h2o/lib/handler/http2_debug_state.c
new file mode 100644
index 0000000..0aa0bd1
--- /dev/null
+++ b/debian/vendor-h2o/lib/handler/http2_debug_state.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 DeNA Co., Ltd., Ichito Nagata
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include <inttypes.h>
+#include "h2o.h"
+
+struct st_h2o_http2_debug_state_handler_t {
+    h2o_handler_t super;
+    int hpack_enabled;
+};
+
+static int on_req(h2o_handler_t *_self, h2o_req_t *req)
+{
+    struct st_h2o_http2_debug_state_handler_t *self = (void *)_self;
+
+    static h2o_generator_t generator = {NULL, NULL};
+
+    if (req->conn->callbacks->get_debug_state == NULL) {
+        return -1;
+    }
+
+    h2o_http2_debug_state_t *debug_state = req->conn->callbacks->get_debug_state(req, self->hpack_enabled);
+
+    // stringify these variables to embed in Debug Header
+    h2o_iovec_t conn_flow_in, conn_flow_out;
+    conn_flow_in.base = h2o_mem_alloc_pool(&req->pool, sizeof(H2O_INT64_LONGEST_STR));
+    conn_flow_in.len = sprintf(conn_flow_in.base, "%zd", debug_state->conn_flow_in);
+    conn_flow_out.base = h2o_mem_alloc_pool(&req->pool, sizeof(H2O_INT64_LONGEST_STR));
+    conn_flow_out.len = sprintf(conn_flow_out.base, "%zd", debug_state->conn_flow_out);
+
+    req->res.status = 200;
+    h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CONTENT_TYPE, NULL, H2O_STRLIT("application/json; charset=utf-8"));
+    h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CACHE_CONTROL, NULL, H2O_STRLIT("no-cache, no-store"));
+    h2o_add_header_by_str(&req->pool, &req->res.headers, H2O_STRLIT("conn-flow-in"), 0, NULL, conn_flow_in.base, conn_flow_in.len);
+    h2o_add_header_by_str(&req->pool, &req->res.headers, H2O_STRLIT("conn-flow-out"), 0, NULL, conn_flow_out.base,
+                          conn_flow_out.len);
+
+    h2o_start_response(req, &generator);
+    h2o_send(req, debug_state->json.entries,
+             h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("HEAD")) ? 0 : debug_state->json.size,
+             H2O_SEND_STATE_FINAL);
+    return 0;
+}
+
+void h2o_http2_debug_state_register(h2o_hostconf_t *conf, int hpack_enabled)
+{
+    h2o_pathconf_t *pathconf = h2o_config_register_path(conf, "/.well-known/h2/state", 0);
+    struct st_h2o_http2_debug_state_handler_t *self = (void *)h2o_create_handler(pathconf, sizeof(*self));
+    self->super.on_req = on_req;
+    self->hpack_enabled = hpack_enabled;
+}