Adding upstream version 2.9.5.upstream/2.9.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1428 insertions, 0 deletions

diff --git a/src/tcp_rules.c b/src/tcp_rules.c
new file mode 100644
index 0000000..9ce6c90
--- /dev/null
+++ b/src/tcp_rules.c
@@ -0,0 +1,1428 @@
+/*
+ * "tcp" rules processing
+ *
+ * Copyright 2000-2016 Willy Tarreau <w@1wt.eu>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+#include <haproxy/acl.h>
+#include <haproxy/action.h>
+#include <haproxy/api.h>
+#include <haproxy/arg-t.h>
+#include <haproxy/capture-t.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/channel.h>
+#include <haproxy/connection.h>
+#include <haproxy/global.h>
+#include <haproxy/list.h>
+#include <haproxy/log.h>
+#include <haproxy/proxy.h>
+#include <haproxy/sample.h>
+#include <haproxy/sc_strm.h>
+#include <haproxy/stconn.h>
+#include <haproxy/stick_table.h>
+#include <haproxy/stream-t.h>
+#include <haproxy/tcp_rules.h>
+#include <haproxy/ticks.h>
+#include <haproxy/tools.h>
+#include <haproxy/trace.h>
+
+
+#define TRACE_SOURCE &trace_strm
+
+/* List head of all known action keywords for "tcp-request connection" */
+struct list tcp_req_conn_keywords = LIST_HEAD_INIT(tcp_req_conn_keywords);
+struct list tcp_req_sess_keywords = LIST_HEAD_INIT(tcp_req_sess_keywords);
+struct list tcp_req_cont_keywords = LIST_HEAD_INIT(tcp_req_cont_keywords);
+struct list tcp_res_cont_keywords = LIST_HEAD_INIT(tcp_res_cont_keywords);
+
+/*
+ * Register keywords.
+ */
+void tcp_req_conn_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_APPEND(&tcp_req_conn_keywords, &kw_list->list);
+}
+
+void tcp_req_sess_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_APPEND(&tcp_req_sess_keywords, &kw_list->list);
+}
+
+void tcp_req_cont_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_APPEND(&tcp_req_cont_keywords, &kw_list->list);
+}
+
+void tcp_res_cont_keywords_register(struct action_kw_list *kw_list)
+{
+	LIST_APPEND(&tcp_res_cont_keywords, &kw_list->list);
+}
+
+/*
+ * Return the struct tcp_req_action_kw associated to a keyword.
+ */
+struct action_kw *tcp_req_conn_action(const char *kw)
+{
+	return action_lookup(&tcp_req_conn_keywords, kw);
+}
+
+struct action_kw *tcp_req_sess_action(const char *kw)
+{
+	return action_lookup(&tcp_req_sess_keywords, kw);
+}
+
+struct action_kw *tcp_req_cont_action(const char *kw)
+{
+	return action_lookup(&tcp_req_cont_keywords, kw);
+}
+
+struct action_kw *tcp_res_cont_action(const char *kw)
+{
+	return action_lookup(&tcp_res_cont_keywords, kw);
+}
+
+/* This function performs the TCP request analysis on the current request. It
+ * returns 1 if the processing can continue on next analysers, or zero if it
+ * needs more data, encounters an error, or wants to immediately abort the
+ * request. It relies on buffers flags, and updates s->req->analysers. The
+ * function may be called for frontend rules and backend rules. It only relies
+ * on the backend pointer so this works for both cases.
+ */
+int tcp_inspect_request(struct stream *s, struct channel *req, int an_bit)
+{
+	struct list *def_rules, *rules;
+	struct session *sess = s->sess;
+	struct act_rule *rule;
+	int partial;
+	int act_opts = 0;
+
+	DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+
+	def_rules = ((s->be->defpx &&
+	              (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP) &&
+	              (an_bit == AN_REQ_INSPECT_FE || s->be->defpx != sess->fe->defpx)) ? &s->be->defpx->tcp_req.inspect_rules : NULL);
+	rules = &s->be->tcp_req.inspect_rules;
+
+	/* We don't know whether we have enough data, so must proceed
+	 * this way :
+	 * - iterate through all rules in their declaration order
+	 * - if one rule returns MISS, it means the inspect delay is
+	 *   not over yet, then return immediately, otherwise consider
+	 *   it as a non-match.
+	 * - if one rule returns OK, then return OK
+	 * - if one rule returns KO, then return KO
+	 */
+
+	if ((s->scf->flags & (SC_FL_EOS|SC_FL_ABRT_DONE)) || channel_full(req, global.tune.maxrewrite) ||
+	    sc_waiting_room(s->scf) ||
+	    !s->be->tcp_req.inspect_delay || tick_is_expired(s->rules_exp, now_ms)) {
+		partial = SMP_OPT_FINAL;
+		/* Action may yield while the inspect_delay is not expired and there is no read error */
+		if ((s->scf->flags & SC_FL_ERROR) || !s->be->tcp_req.inspect_delay || tick_is_expired(s->rules_exp, now_ms))
+			act_opts |= ACT_OPT_FINAL;
+	}
+	else
+		partial = 0;
+
+	/* If "the current_rule_list" match the executed rule list, we are in
+	 * resume condition. If a resume is needed it is always in the action
+	 * and never in the ACL or converters. In this case, we initialise the
+	 * current rule, and go to the action execution point.
+	 */
+	if (s->current_rule) {
+		rule = s->current_rule;
+		s->current_rule = NULL;
+		if ((def_rules && s->current_rule_list == def_rules) || s->current_rule_list == rules)
+			goto resume_execution;
+	}
+	s->current_rule_list = ((!def_rules || s->current_rule_list == def_rules) ? rules : def_rules);
+
+  restart:
+	list_for_each_entry(rule, s->current_rule_list, list) {
+		enum acl_test_res ret = ACL_TEST_PASS;
+
+		if (rule->cond) {
+			ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ | partial);
+			if (ret == ACL_TEST_MISS)
+				goto missing_data;
+
+			ret = acl_pass(ret);
+			if (rule->cond->pol == ACL_COND_UNLESS)
+				ret = !ret;
+		}
+
+		if (ret) {
+			act_opts |= ACT_OPT_FIRST;
+resume_execution:
+			/* Always call the action function if defined */
+			if (rule->action_ptr) {
+				switch (rule->action_ptr(rule, s->be, s->sess, s, act_opts)) {
+					case ACT_RET_CONT:
+						break;
+					case ACT_RET_STOP:
+					case ACT_RET_DONE:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto end;
+					case ACT_RET_YIELD:
+						s->current_rule = rule;
+						if (act_opts & ACT_OPT_FINAL) {
+							send_log(s->be, LOG_WARNING,
+								 "Internal error: yield not allowed if the inspect-delay expired "
+								 "for the tcp-request content actions.");
+							goto internal;
+						}
+						goto missing_data;
+					case ACT_RET_DENY:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto deny;
+					case ACT_RET_ABRT:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto abort;
+					case ACT_RET_ERR:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto internal;
+					case ACT_RET_INV:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto invalid;
+				}
+				continue; /* eval the next rule */
+			}
+
+			/* If not action function defined, check for known actions */
+			if (rule->action == ACT_ACTION_ALLOW) {
+				s->last_rule_file = rule->conf.file;
+				s->last_rule_line = rule->conf.line;
+				goto end;
+			}
+			else if (rule->action == ACT_ACTION_DENY) {
+				s->last_rule_file = rule->conf.file;
+				s->last_rule_line = rule->conf.line;
+				goto deny;
+			}
+		}
+	}
+
+	if (def_rules && s->current_rule_list == def_rules) {
+		s->current_rule_list = rules;
+		goto restart;
+	}
+
+ end:
+	/* if we get there, it means we have no rule which matches, or
+	 * we have an explicit accept, so we apply the default accept.
+	 */
+	req->analysers &= ~an_bit;
+	s->current_rule = s->current_rule_list = NULL;
+	req->analyse_exp = s->rules_exp = TICK_ETERNITY;
+	DBG_TRACE_LEAVE(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+	return 1;
+
+ missing_data:
+	channel_dont_connect(req);
+	/* just set the request timeout once at the beginning of the request */
+	if (!tick_isset(s->rules_exp) && s->be->tcp_req.inspect_delay)
+		s->rules_exp = tick_add(now_ms, s->be->tcp_req.inspect_delay);
+	req->analyse_exp = tick_first((tick_is_expired(req->analyse_exp, now_ms) ? 0 : req->analyse_exp), s->rules_exp);
+	DBG_TRACE_DEVEL("waiting for more data", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+	return 0;
+
+ deny:
+	_HA_ATOMIC_INC(&sess->fe->fe_counters.denied_req);
+	if (sess->listener && sess->listener->counters)
+		_HA_ATOMIC_INC(&sess->listener->counters->denied_req);
+	goto reject;
+
+ internal:
+	_HA_ATOMIC_INC(&sess->fe->fe_counters.internal_errors);
+	if (sess->listener && sess->listener->counters)
+		_HA_ATOMIC_INC(&sess->listener->counters->internal_errors);
+	if (!(s->flags & SF_ERR_MASK))
+		s->flags |= SF_ERR_INTERNAL;
+	goto reject;
+
+ invalid:
+	_HA_ATOMIC_INC(&sess->fe->fe_counters.failed_req);
+	if (sess->listener && sess->listener->counters)
+		_HA_ATOMIC_INC(&sess->listener->counters->failed_req);
+
+ reject:
+	sc_must_kill_conn(s->scf);
+	stream_abort(s);
+
+ abort:
+	req->analysers &= AN_REQ_FLT_END;
+	s->current_rule = s->current_rule_list = NULL;
+	req->analyse_exp = s->rules_exp = TICK_ETERNITY;
+
+	if (!(s->flags & SF_ERR_MASK))
+		s->flags |= SF_ERR_PRXCOND;
+	if (!(s->flags & SF_FINST_MASK))
+		s->flags |= SF_FINST_R;
+	DBG_TRACE_DEVEL("leaving on error|deny|abort", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA|STRM_EV_TCP_ERR, s);
+	return 0;
+}
+
+/* This function performs the TCP response analysis on the current response. It
+ * returns 1 if the processing can continue on next analysers, or zero if it
+ * needs more data, encounters an error, or wants to immediately abort the
+ * response. It relies on buffers flags, and updates s->rep->analysers. The
+ * function may be called for backend rules.
+ */
+int tcp_inspect_response(struct stream *s, struct channel *rep, int an_bit)
+{
+	struct list *def_rules, *rules;
+	struct session *sess = s->sess;
+	struct act_rule *rule;
+	int partial;
+	int act_opts = 0;
+
+	DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+
+	def_rules = (s->be->defpx && (s->be->mode == PR_MODE_TCP || s->be->mode == PR_MODE_HTTP) ? &s->be->defpx->tcp_rep.inspect_rules : NULL);
+	rules = &s->be->tcp_rep.inspect_rules;
+
+	/* We don't know whether we have enough data, so must proceed
+	 * this way :
+	 * - iterate through all rules in their declaration order
+	 * - if one rule returns MISS, it means the inspect delay is
+	 *   not over yet, then return immediately, otherwise consider
+	 *   it as a non-match.
+	 * - if one rule returns OK, then return OK
+	 * - if one rule returns KO, then return KO
+	 */
+	if ((s->scb->flags & (SC_FL_EOS|SC_FL_ABRT_DONE)) || channel_full(rep, global.tune.maxrewrite) ||
+	    sc_waiting_room(s->scb) ||
+	    !s->be->tcp_rep.inspect_delay || tick_is_expired(s->rules_exp, now_ms)) {
+		partial = SMP_OPT_FINAL;
+		/* Action may yield while the inspect_delay is not expired and there is no read error */
+		if ((s->scb->flags & SC_FL_ERROR) || !s->be->tcp_rep.inspect_delay || tick_is_expired(s->rules_exp, now_ms))
+			act_opts |= ACT_OPT_FINAL;
+	}
+	else
+		partial = 0;
+
+	/* If "the current_rule_list" match the executed rule list, we are in
+	 * resume condition. If a resume is needed it is always in the action
+	 * and never in the ACL or converters. In this case, we initialise the
+	 * current rule, and go to the action execution point.
+	 */
+	if (s->current_rule) {
+		rule = s->current_rule;
+		s->current_rule = NULL;
+		if ((def_rules && s->current_rule_list == def_rules) || s->current_rule_list == rules)
+			goto resume_execution;
+	}
+	s->current_rule_list = ((!def_rules || s->current_rule_list == def_rules) ? rules : def_rules);
+
+  restart:
+	list_for_each_entry(rule, s->current_rule_list, list) {
+		enum acl_test_res ret = ACL_TEST_PASS;
+
+		if (rule->cond) {
+			ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_RES | partial);
+			if (ret == ACL_TEST_MISS)
+				goto missing_data;
+
+			ret = acl_pass(ret);
+			if (rule->cond->pol == ACL_COND_UNLESS)
+				ret = !ret;
+		}
+
+		if (ret) {
+			act_opts |= ACT_OPT_FIRST;
+resume_execution:
+			/* Always call the action function if defined */
+			if (rule->action_ptr) {
+				switch (rule->action_ptr(rule, s->be, s->sess, s, act_opts)) {
+					case ACT_RET_CONT:
+						break;
+					case ACT_RET_STOP:
+					case ACT_RET_DONE:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto end;
+					case ACT_RET_YIELD:
+						s->current_rule = rule;
+						if (act_opts & ACT_OPT_FINAL) {
+							send_log(s->be, LOG_WARNING,
+								 "Internal error: yield not allowed if the inspect-delay expired "
+								 "for the tcp-response content actions.");
+							goto internal;
+						}
+						channel_dont_close(rep);
+						goto missing_data;
+					case ACT_RET_DENY:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto deny;
+					case ACT_RET_ABRT:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto abort;
+					case ACT_RET_ERR:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto internal;
+					case ACT_RET_INV:
+						s->last_rule_file = rule->conf.file;
+						s->last_rule_line = rule->conf.line;
+						goto invalid;
+				}
+				continue; /* eval the next rule */
+			}
+
+			/* If not action function defined, check for known actions */
+			if (rule->action == ACT_ACTION_ALLOW) {
+				s->last_rule_file = rule->conf.file;
+				s->last_rule_line = rule->conf.line;
+				goto end;
+			}
+			else if (rule->action == ACT_ACTION_DENY) {
+				s->last_rule_file = rule->conf.file;
+				s->last_rule_line = rule->conf.line;
+				goto deny;
+			}
+			else if (rule->action == ACT_TCP_CLOSE) {
+				s->scb->flags |= SC_FL_NOLINGER | SC_FL_NOHALF;
+				sc_must_kill_conn(s->scb);
+				sc_abort(s->scb);
+				sc_shutdown(s->scb);
+				s->last_rule_file = rule->conf.file;
+				s->last_rule_line = rule->conf.line;
+				goto end;
+			}
+		}
+	}
+
+	if (def_rules && s->current_rule_list == def_rules) {
+		s->current_rule_list = rules;
+		goto restart;
+	}
+
+ end:
+	/* if we get there, it means we have no rule which matches, or
+	 * we have an explicit accept, so we apply the default accept.
+	 */
+	rep->analysers &= ~an_bit;
+	s->current_rule = s->current_rule_list = NULL;
+	rep->analyse_exp = s->rules_exp = TICK_ETERNITY;
+	DBG_TRACE_LEAVE(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+	return 1;
+
+ missing_data:
+	/* just set the analyser timeout once at the beginning of the response */
+	if (!tick_isset(s->rules_exp) && s->be->tcp_rep.inspect_delay)
+		s->rules_exp = tick_add(now_ms, s->be->tcp_rep.inspect_delay);
+	rep->analyse_exp = tick_first((tick_is_expired(rep->analyse_exp, now_ms) ? 0 : rep->analyse_exp), s->rules_exp);
+	DBG_TRACE_DEVEL("waiting for more data", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+	return 0;
+
+  deny:
+	_HA_ATOMIC_INC(&s->sess->fe->fe_counters.denied_resp);
+	_HA_ATOMIC_INC(&s->be->be_counters.denied_resp);
+	if (s->sess->listener && s->sess->listener->counters)
+		_HA_ATOMIC_INC(&s->sess->listener->counters->denied_resp);
+	if (objt_server(s->target))
+		_HA_ATOMIC_INC(&__objt_server(s->target)->counters.denied_resp);
+	goto reject;
+
+ internal:
+	_HA_ATOMIC_INC(&s->sess->fe->fe_counters.internal_errors);
+	_HA_ATOMIC_INC(&s->be->be_counters.internal_errors);
+	if (s->sess->listener && s->sess->listener->counters)
+		_HA_ATOMIC_INC(&s->sess->listener->counters->internal_errors);
+	if (objt_server(s->target))
+		_HA_ATOMIC_INC(&__objt_server(s->target)->counters.internal_errors);
+	if (!(s->flags & SF_ERR_MASK))
+		s->flags |= SF_ERR_INTERNAL;
+	goto reject;
+
+ invalid:
+	_HA_ATOMIC_INC(&s->be->be_counters.failed_resp);
+	if (objt_server(s->target))
+		_HA_ATOMIC_INC(&__objt_server(s->target)->counters.failed_resp);
+
+ reject:
+	sc_must_kill_conn(s->scb);
+	stream_abort(s);
+
+  abort:
+	rep->analysers &= AN_RES_FLT_END;
+	s->current_rule = s->current_rule_list = NULL;
+	rep->analyse_exp = s->rules_exp = TICK_ETERNITY;
+
+	if (!(s->flags & SF_ERR_MASK))
+		s->flags |= SF_ERR_PRXCOND;
+	if (!(s->flags & SF_FINST_MASK))
+		s->flags |= SF_FINST_D;
+	DBG_TRACE_DEVEL("leaving on error", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA|STRM_EV_TCP_ERR, s);
+	return 0;
+}
+
+
+/* This function performs the TCP layer4 analysis on the current request. It
+ * returns 0 if a reject rule matches, otherwise 1 if either an accept rule
+ * matches or if no more rule matches. It can only use rules which don't need
+ * any data. This only works on connection-based client-facing stream connectors.
+ */
+int tcp_exec_l4_rules(struct session *sess)
+{
+	struct proxy *px = sess->fe;
+	struct act_rule *rule;
+	struct connection *conn = objt_conn(sess->origin);
+	int result = 1;
+	enum acl_test_res ret;
+
+	if (!conn)
+		return result;
+
+	if  (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
+		px = sess->fe->defpx;
+
+  restart:
+	list_for_each_entry(rule, &px->tcp_req.l4_rules, list) {
+		ret = ACL_TEST_PASS;
+
+		if (rule->cond) {
+			ret = acl_exec_cond(rule->cond, sess->fe, sess, NULL, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
+			ret = acl_pass(ret);
+			if (rule->cond->pol == ACL_COND_UNLESS)
+				ret = !ret;
+		}
+
+		if (ret) {
+			/* Always call the action function if defined */
+			if (rule->action_ptr) {
+				switch (rule->action_ptr(rule, sess->fe, sess, NULL, ACT_OPT_FINAL | ACT_OPT_FIRST)) {
+					case ACT_RET_YIELD:
+						/* yield is not allowed at this point. If this return code is
+						 * used it is a bug, so I prefer to abort the process.
+						 */
+						send_log(sess->fe, LOG_WARNING,
+							 "Internal error: yield not allowed with tcp-request connection actions.");
+						/* fall through */
+					case ACT_RET_STOP:
+					case ACT_RET_DONE:
+						goto end;
+					case ACT_RET_CONT:
+						break;
+					case ACT_RET_DENY:
+					case ACT_RET_ABRT:
+					case ACT_RET_ERR:
+					case ACT_RET_INV:
+						result = 0;
+						goto end;
+				}
+				continue; /* eval the next rule */
+			}
+
+			/* If not action function defined, check for known actions */
+			if (rule->action == ACT_ACTION_ALLOW) {
+				goto end;
+			}
+			else if (rule->action == ACT_ACTION_DENY) {
+				_HA_ATOMIC_INC(&sess->fe->fe_counters.denied_conn);
+				if (sess->listener && sess->listener->counters)
+					_HA_ATOMIC_INC(&sess->listener->counters->denied_conn);
+
+				result = 0;
+				goto end;
+			}
+			else if (rule->action == ACT_TCP_EXPECT_PX) {
+				if (!(conn->flags & CO_FL_HANDSHAKE)) {
+					if (xprt_add_hs(conn) < 0) {
+						result = 0;
+						goto end;
+					}
+				}
+				conn->flags |= CO_FL_ACCEPT_PROXY;
+			}
+			else if (rule->action == ACT_TCP_EXPECT_CIP) {
+				if (!(conn->flags & CO_FL_HANDSHAKE)) {
+					if (xprt_add_hs(conn) < 0) {
+						result = 0;
+						goto end;
+					}
+				}
+				conn->flags |= CO_FL_ACCEPT_CIP;
+			}
+		}
+	}
+
+	if (px != sess->fe) {
+		px = sess->fe;
+		goto restart;
+	}
+ end:
+	return result;
+}
+
+/* This function performs the TCP layer5 analysis on the current request. It
+ * returns 0 if a reject rule matches, otherwise 1 if either an accept rule
+ * matches or if no more rule matches. It can only use rules which don't need
+ * any data. This only works on session-based client-facing stream connectors.
+ * An example of valid use case is to track a stick-counter on the source
+ * address extracted from the proxy protocol.
+ */
+int tcp_exec_l5_rules(struct session *sess)
+{
+	struct proxy *px = sess->fe;
+	struct act_rule *rule;
+	int result = 1;
+	enum acl_test_res ret;
+
+	if  (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
+		px = sess->fe->defpx;
+
+  restart:
+	list_for_each_entry(rule, &px->tcp_req.l5_rules, list) {
+		ret = ACL_TEST_PASS;
+
+		if (rule->cond) {
+			ret = acl_exec_cond(rule->cond, sess->fe, sess, NULL, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
+			ret = acl_pass(ret);
+			if (rule->cond->pol == ACL_COND_UNLESS)
+				ret = !ret;
+		}
+
+		if (ret) {
+			/* Always call the action function if defined */
+			if (rule->action_ptr) {
+				switch (rule->action_ptr(rule, sess->fe, sess, NULL, ACT_OPT_FINAL | ACT_OPT_FIRST)) {
+					case ACT_RET_YIELD:
+						/* yield is not allowed at this point. If this return code is
+						 * used it is a bug, so I prefer to abort the process.
+						 */
+						send_log(sess->fe, LOG_WARNING,
+							 "Internal error: yield not allowed with tcp-request session actions.");
+						/* fall through */
+					case ACT_RET_STOP:
+					case ACT_RET_DONE:
+						goto end;
+					case ACT_RET_CONT:
+						break;
+					case ACT_RET_DENY:
+					case ACT_RET_ABRT:
+					case ACT_RET_ERR:
+					case ACT_RET_INV:
+						result = 0;
+						goto end;
+				}
+				continue; /* eval the next rule */
+			}
+
+			/* If not action function defined, check for known actions */
+			if (rule->action == ACT_ACTION_ALLOW) {
+				goto end;
+			}
+			else if (rule->action == ACT_ACTION_DENY) {
+				_HA_ATOMIC_INC(&sess->fe->fe_counters.denied_sess);
+				if (sess->listener && sess->listener->counters)
+					_HA_ATOMIC_INC(&sess->listener->counters->denied_sess);
+
+				result = 0;
+				goto end;
+			}
+		}
+	}
+
+	if (px != sess->fe) {
+		px = sess->fe;
+		goto restart;
+	}
+  end:
+	return result;
+}
+
+/* Parse a tcp-response rule. Return a negative value in case of failure */
+static int tcp_parse_response_rule(char **args, int arg, int section_type,
+                                   struct proxy *curpx, const struct proxy *defpx,
+                                   struct act_rule *rule, char **err,
+                                   unsigned int where,
+                                   const char *file, int line)
+{
+	if ((curpx == defpx && strlen(defpx->id) == 0) || !(curpx->cap & PR_CAP_BE)) {
+		memprintf(err, "%s %s is only allowed in 'backend' sections or 'defaults' section with a name",
+		          args[0], args[1]);
+		return -1;
+	}
+
+	if (strcmp(args[arg], "accept") == 0) {
+		arg++;
+		rule->action = ACT_ACTION_ALLOW;
+		rule->flags |= ACT_FLAG_FINAL;
+	}
+	else if (strcmp(args[arg], "reject") == 0) {
+		arg++;
+		rule->action = ACT_ACTION_DENY;
+		rule->flags |= ACT_FLAG_FINAL;
+	}
+	else if (strcmp(args[arg], "close") == 0) {
+		arg++;
+		rule->action = ACT_TCP_CLOSE;
+		rule->flags |= ACT_FLAG_FINAL;
+	}
+	else {
+		struct action_kw *kw;
+		kw = tcp_res_cont_action(args[arg]);
+		if (kw) {
+			arg++;
+			rule->kw = kw;
+			if (kw->parse((const char **)args, &arg, curpx, rule, err) == ACT_RET_PRS_ERR)
+				return -1;
+		} else {
+			const char *extra[] = { "accept", "reject", "close", NULL };
+			const char *best = action_suggest(args[arg], &tcp_res_cont_keywords, extra);
+
+			action_build_list(&tcp_res_cont_keywords, &trash);
+			memprintf(err,
+			          "'%s %s' expects 'accept', 'close', 'reject', %s in %s '%s' (got '%s').%s%s%s",
+			          args[0], args[1], trash.area,
+			          proxy_type_str(curpx), curpx->id, args[arg],
+			          best ? " Did you mean '" : "",
+			          best ? best : "",
+			          best ? "' maybe ?" : "");
+			return -1;
+		}
+	}
+
+	if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
+		if ((rule->cond = build_acl_cond(file, line, &curpx->acl, curpx, (const char **)args+arg, err)) == NULL) {
+			memprintf(err,
+			          "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
+			          args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
+			return -1;
+		}
+	}
+	else if (*args[arg]) {
+		memprintf(err,
+			 "'%s %s %s' only accepts 'if' or 'unless', in %s '%s' (got '%s')",
+			 args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg]);
+		return -1;
+	}
+	return 0;
+}
+
+
+/* This function executes a track-sc* actions. On success, it returns
+ * ACT_RET_CONT. If it must yield, it return ACT_RET_YIELD. Otherwsize
+ * ACT_RET_ERR is returned.
+ */
+static enum act_return tcp_action_track_sc(struct act_rule *rule, struct proxy *px,
+					    struct session *sess, struct stream *s, int flags)
+{
+	struct stksess *ts;
+	struct stktable *t;
+	struct stktable_key *key;
+	struct sample smp;
+	int opt;
+
+	opt = SMP_OPT_DIR_REQ;
+	if (flags & ACT_FLAG_FINAL)
+		opt |= SMP_OPT_FINAL;
+
+	t = rule->arg.trk_ctr.table.t;
+	if (rule->from == ACT_F_TCP_REQ_CNT) { /* L7 rules: use the stream */
+		if (stkctr_entry(&s->stkctr[rule->action]))
+			goto end;
+
+		key = stktable_fetch_key(t, s->be, sess, s, opt, rule->arg.trk_ctr.expr, &smp);
+
+		if ((smp.flags & SMP_F_MAY_CHANGE) && !(flags & ACT_FLAG_FINAL))
+			return ACT_RET_YIELD; /* key might appear later */
+
+		if (key && (ts = stktable_get_entry(t, key))) {
+			stream_track_stkctr(&s->stkctr[rule->action], t, ts);
+			stkctr_set_flags(&s->stkctr[rule->action], STKCTR_TRACK_CONTENT);
+			if (sess->fe != s->be)
+				stkctr_set_flags(&s->stkctr[rule->action], STKCTR_TRACK_BACKEND);
+		}
+	}
+	else {  /* L4/L5 rules: use the session */
+		if (stkctr_entry(&sess->stkctr[rule->action]))
+			goto end;
+
+		key = stktable_fetch_key(t, sess->fe, sess, NULL, opt, rule->arg.trk_ctr.expr, NULL);
+		if (key && (ts = stktable_get_entry(t, key)))
+			stream_track_stkctr(&sess->stkctr[rule->action], t, ts);
+	}
+
+  end:
+	return ACT_RET_CONT;
+}
+
+/* This function executes a capture actions. It executes a fetch expression,
+ * turns the result into a string and puts it in a capture slot. On success, it
+ * returns ACT_RET_CONT. If it must yield, it return ACT_RET_YIELD. Otherwsize
+ * ACT_RET_ERR is returned.
+ */
+static enum act_return tcp_action_capture(struct act_rule *rule, struct proxy *px,
+					  struct session *sess, struct stream *s, int flags)
+{
+	struct sample *key;
+	struct cap_hdr *h = rule->arg.cap.hdr;
+	char **cap = s->req_cap;
+	int len, opt;
+
+	opt = ((rule->from == ACT_F_TCP_REQ_CNT) ? SMP_OPT_DIR_REQ : SMP_OPT_DIR_RES);
+	if (flags & ACT_FLAG_FINAL)
+		opt |= SMP_OPT_FINAL;
+
+	key = sample_fetch_as_type(s->be, sess, s, opt, rule->arg.cap.expr, SMP_T_STR);
+	if (!key)
+		goto end;
+
+	if ((key->flags & SMP_F_MAY_CHANGE) && !(flags & ACT_FLAG_FINAL))
+		return ACT_RET_YIELD; /* key might appear later */
+
+	if (cap[h->index] == NULL) {
+		cap[h->index] = pool_alloc(h->pool);
+		if (cap[h->index] == NULL) /* no more capture memory, ignore error */
+			goto end;
+	}
+
+	len = key->data.u.str.data;
+	if (len > h->len)
+		len = h->len;
+
+	memcpy(cap[h->index], key->data.u.str.area, len);
+	cap[h->index][len] = 0;
+
+  end:
+	return ACT_RET_CONT;
+}
+
+static void release_tcp_capture(struct act_rule * rule)
+{
+	release_sample_expr(rule->arg.cap.expr);
+}
+
+
+static void release_tcp_track_sc(struct act_rule * rule)
+{
+	release_sample_expr(rule->arg.trk_ctr.expr);
+}
+
+/* Parse a tcp-request rule. Return a negative value in case of failure */
+static int tcp_parse_request_rule(char **args, int arg, int section_type,
+                                  struct proxy *curpx, const struct proxy *defpx,
+                                  struct act_rule *rule, char **err,
+                                  unsigned int where, const char *file, int line)
+{
+	if (curpx == defpx && strlen(defpx->id) == 0) {
+		memprintf(err, "%s %s is not allowed in anonymous 'defaults' sections",
+			  args[0], args[1]);
+		return -1;
+	}
+
+	if (strcmp(args[arg], "accept") == 0) {
+		arg++;
+		rule->action = ACT_ACTION_ALLOW;
+		rule->flags |= ACT_FLAG_FINAL;
+	}
+	else if (strcmp(args[arg], "reject") == 0) {
+		arg++;
+		rule->action = ACT_ACTION_DENY;
+		rule->flags |= ACT_FLAG_FINAL;
+	}
+	else if (strcmp(args[arg], "capture") == 0) {
+		struct sample_expr *expr;
+		struct cap_hdr *hdr;
+		int kw = arg;
+		int len = 0;
+
+		if (!(curpx->cap & PR_CAP_FE)) {
+			memprintf(err,
+			          "'%s %s %s' : proxy '%s' has no frontend capability",
+			          args[0], args[1], args[kw], curpx->id);
+			return -1;
+		}
+
+		if (!(where & SMP_VAL_FE_REQ_CNT)) {
+			memprintf(err,
+				  "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+				  args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+			return -1;
+		}
+
+		arg++;
+
+		curpx->conf.args.ctx = ARGC_CAP;
+		expr = sample_parse_expr(args, &arg, file, line, err, &curpx->conf.args, NULL);
+		if (!expr) {
+			memprintf(err,
+			          "'%s %s %s' : %s",
+			          args[0], args[1], args[kw], *err);
+			return -1;
+		}
+
+		if (!(expr->fetch->val & where)) {
+			memprintf(err,
+			          "'%s %s %s' : fetch method '%s' extracts information from '%s', none of which is available here",
+			          args[0], args[1], args[kw], args[arg-1], sample_src_names(expr->fetch->use));
+			release_sample_expr(expr);
+			return -1;
+		}
+
+		if (strcmp(args[arg], "len") == 0) {
+			arg++;
+			if (!args[arg]) {
+				memprintf(err,
+					  "'%s %s %s' : missing length value",
+					  args[0], args[1], args[kw]);
+				release_sample_expr(expr);
+				return -1;
+			}
+			/* we copy the table name for now, it will be resolved later */
+			len = atoi(args[arg]);
+			if (len <= 0) {
+				memprintf(err,
+					  "'%s %s %s' : length must be > 0",
+					  args[0], args[1], args[kw]);
+				release_sample_expr(expr);
+				return -1;
+			}
+			arg++;
+		}
+
+		if (!len) {
+			memprintf(err,
+				  "'%s %s %s' : a positive 'len' argument is mandatory",
+				  args[0], args[1], args[kw]);
+			free(expr);
+			return -1;
+		}
+
+		hdr = calloc(1, sizeof(*hdr));
+		if (!hdr) {
+			memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+			release_sample_expr(expr);
+			return -1;
+		}
+		hdr->next = curpx->req_cap;
+		hdr->name = NULL; /* not a header capture */
+		hdr->namelen = 0;
+		hdr->len = len;
+		hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
+		hdr->index = curpx->nb_req_cap++;
+
+		curpx->req_cap = hdr;
+		curpx->to_log |= LW_REQHDR;
+
+		/* check if we need to allocate an http_txn struct for HTTP parsing */
+		curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
+
+		rule->arg.cap.expr = expr;
+		rule->arg.cap.hdr = hdr;
+		rule->action = ACT_CUSTOM;
+		rule->action_ptr = tcp_action_capture;
+		rule->check_ptr = check_capture;
+		rule->release_ptr  = release_tcp_capture;
+	}
+	else if (strncmp(args[arg], "track-sc", 8) == 0) {
+		struct sample_expr *expr;
+		int kw = arg;
+		unsigned int tsc_num;
+		const char *tsc_num_str;
+
+		arg++;
+
+		tsc_num_str = &args[kw][8];
+		if (cfg_parse_track_sc_num(&tsc_num, tsc_num_str, tsc_num_str + strlen(tsc_num_str), err) == -1) {
+			memprintf(err, "'%s %s %s' : %s", args[0], args[1], args[kw], *err);
+			return -1;
+		}
+
+		curpx->conf.args.ctx = ARGC_TRK;
+		expr = sample_parse_expr(args, &arg, file, line, err, &curpx->conf.args, NULL);
+		if (!expr) {
+			memprintf(err,
+			          "'%s %s %s' : %s",
+			          args[0], args[1], args[kw], *err);
+			return -1;
+		}
+
+		if (!(expr->fetch->val & where)) {
+			memprintf(err,
+			          "'%s %s %s' : fetch method '%s' extracts information from '%s', none of which is available here",
+			          args[0], args[1], args[kw], args[arg-1], sample_src_names(expr->fetch->use));
+			release_sample_expr(expr);
+			return -1;
+		}
+
+		/* check if we need to allocate an http_txn struct for HTTP parsing */
+		curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
+
+		if (strcmp(args[arg], "table") == 0) {
+			arg++;
+			if (!args[arg]) {
+				memprintf(err,
+					  "'%s %s %s' : missing table name",
+					  args[0], args[1], args[kw]);
+				release_sample_expr(expr);
+				return -1;
+			}
+			/* we copy the table name for now, it will be resolved later */
+			rule->arg.trk_ctr.table.n = strdup(args[arg]);
+			arg++;
+		}
+		rule->action = tsc_num;
+		rule->arg.trk_ctr.expr = expr;
+		rule->action_ptr = tcp_action_track_sc;
+		rule->check_ptr = check_trk_action;
+		rule->release_ptr  = release_tcp_track_sc;
+	}
+	else if (strcmp(args[arg], "expect-proxy") == 0) {
+		if (strcmp(args[arg+1], "layer4") != 0) {
+			memprintf(err,
+				  "'%s %s %s' only supports 'layer4' in %s '%s' (got '%s')",
+				  args[0], args[1], args[arg], proxy_type_str(curpx), curpx->id, args[arg+1]);
+			return -1;
+		}
+
+		if (!(where & SMP_VAL_FE_CON_ACC)) {
+			memprintf(err,
+				  "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+				  args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+			return -1;
+		}
+
+		arg += 2;
+		rule->action = ACT_TCP_EXPECT_PX;
+	}
+	else if (strcmp(args[arg], "expect-netscaler-cip") == 0) {
+		if (strcmp(args[arg+1], "layer4") != 0) {
+			memprintf(err,
+				  "'%s %s %s' only supports 'layer4' in %s '%s' (got '%s')",
+				  args[0], args[1], args[arg], proxy_type_str(curpx), curpx->id, args[arg+1]);
+			return -1;
+		}
+
+		if (!(where & SMP_VAL_FE_CON_ACC)) {
+			memprintf(err,
+				  "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+				  args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+			return -1;
+		}
+
+		arg += 2;
+		rule->action = ACT_TCP_EXPECT_CIP;
+	}
+	else {
+		struct action_kw *kw;
+		if (where & SMP_VAL_FE_CON_ACC) {
+			/* L4 */
+			kw = tcp_req_conn_action(args[arg]);
+			rule->kw = kw;
+		} else if (where & SMP_VAL_FE_SES_ACC) {
+			/* L5 */
+			kw = tcp_req_sess_action(args[arg]);
+			rule->kw = kw;
+		} else {
+			/* L6 */
+			kw = tcp_req_cont_action(args[arg]);
+			rule->kw = kw;
+		}
+		if (kw) {
+			arg++;
+			if (kw->parse((const char **)args, &arg, curpx, rule, err) == ACT_RET_PRS_ERR)
+				return -1;
+		} else {
+			const char *extra[] = { "accept", "reject", "capture", "track-sc", "expect-proxy", "expect-netscaler-cip", NULL };
+			const char *best = NULL;
+
+
+			if (where & SMP_VAL_FE_CON_ACC) {
+				action_build_list(&tcp_req_conn_keywords, &trash);
+				best = action_suggest(args[arg], &tcp_req_conn_keywords, extra);
+			}
+			else if (where & SMP_VAL_FE_SES_ACC) {
+				action_build_list(&tcp_req_sess_keywords, &trash);
+				best = action_suggest(args[arg], &tcp_req_sess_keywords, extra);
+			}
+			else {
+				action_build_list(&tcp_req_cont_keywords, &trash);
+				best = action_suggest(args[arg], &tcp_req_cont_keywords, extra);
+			}
+
+			memprintf(err,
+			          "'%s %s' expects 'accept', 'reject', 'capture', 'expect-proxy', 'expect-netscaler-cip', 'track-sc0' ... 'track-sc%d', %s "
+			          "in %s '%s' (got '%s').%s%s%s\n",
+			          args[0], args[1], global.tune.nb_stk_ctr-1,
+			          trash.area, proxy_type_str(curpx),
+			          curpx->id, args[arg],
+			          best ? " Did you mean '" : "",
+			          best ? best : "",
+			          best ? "' maybe ?" : "");
+			return -1;
+		}
+	}
+
+	if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
+		if ((rule->cond = build_acl_cond(file, line, &curpx->acl, curpx, (const char **)args+arg, err)) == NULL) {
+			memprintf(err,
+			          "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
+			          args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
+			return -1;
+		}
+	}
+	else if (*args[arg]) {
+		memprintf(err,
+			 "'%s %s %s' only accepts 'if' or 'unless', in %s '%s' (got '%s')",
+			 args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg]);
+		return -1;
+	}
+	return 0;
+}
+
+/* This function should be called to parse a line starting with the "tcp-response"
+ * keyword.
+ */
+static int tcp_parse_tcp_rep(char **args, int section_type, struct proxy *curpx,
+                             const struct proxy *defpx, const char *file, int line,
+                             char **err)
+{
+	const char *ptr = NULL;
+	unsigned int val;
+	int warn = 0;
+	int arg;
+	struct act_rule *rule;
+	unsigned int where;
+	const struct acl *acl;
+	const char *kw;
+
+	if (!*args[1]) {
+		memprintf(err, "missing argument for '%s' in %s '%s'",
+		          args[0], proxy_type_str(curpx), curpx->id);
+		return -1;
+	}
+
+	if (strcmp(args[1], "inspect-delay") == 0) {
+		if ((curpx == defpx && strlen(defpx->id) == 0) || !(curpx->cap & PR_CAP_BE)) {
+			memprintf(err, "%s %s is only allowed in 'backend' sections or 'defaults' section with a name",
+			          args[0], args[1]);
+			return -1;
+		}
+
+		if (!*args[2] || (ptr = parse_time_err(args[2], &val, TIME_UNIT_MS))) {
+			memprintf(err,
+			          "'%s %s' expects a positive delay in milliseconds, in %s '%s'",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+
+			if (ptr == PARSE_TIME_OVER)
+				memprintf(err, "%s (timer overflow in '%s', maximum value is 2147483647 ms or ~24.8 days)", *err, args[2]);
+			else if (ptr == PARSE_TIME_UNDER)
+				memprintf(err, "%s (timer underflow in '%s', minimum non-null value is 1 ms)", *err, args[2]);
+			else if (ptr)
+				memprintf(err, "%s (unexpected character '%c')", *err, *ptr);
+			return -1;
+		}
+
+		if (curpx->tcp_rep.inspect_delay) {
+			memprintf(err, "ignoring %s %s (was already defined) in %s '%s'",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+			return 1;
+		}
+		curpx->tcp_rep.inspect_delay = val;
+		return 0;
+	}
+
+	rule = new_act_rule(ACT_F_TCP_RES_CNT, file, line);
+	if (!rule) {
+		memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+		return -1;
+	}
+	LIST_INIT(&rule->list);
+	arg = 1;
+	where = 0;
+
+	if (strcmp(args[1], "content") == 0) {
+		arg++;
+
+		if (curpx->cap & PR_CAP_FE)
+			where |= SMP_VAL_FE_RES_CNT;
+		if (curpx->cap & PR_CAP_BE)
+			where |= SMP_VAL_BE_RES_CNT;
+		if (tcp_parse_response_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+			goto error;
+
+		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+		if (acl) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+					  acl->name, args[0], args[1], sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+					  args[0], args[1],
+					  LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+					  sample_ckp_names(where));
+
+			warn++;
+		}
+		else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+					  acl->name, kw, sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+					  kw, sample_ckp_names(where));
+			warn++;
+		}
+
+		LIST_APPEND(&curpx->tcp_rep.inspect_rules, &rule->list);
+	}
+	else {
+		memprintf(err,
+		          "'%s' expects 'inspect-delay' or 'content' in %s '%s' (got '%s')",
+		          args[0], proxy_type_str(curpx), curpx->id, args[1]);
+		goto error;
+	}
+
+	return warn;
+ error:
+	free_act_rule(rule);
+	return -1;
+}
+
+
+/* This function should be called to parse a line starting with the "tcp-request"
+ * keyword.
+ */
+static int tcp_parse_tcp_req(char **args, int section_type, struct proxy *curpx,
+                             const struct proxy *defpx, const char *file, int line,
+                             char **err)
+{
+	const char *ptr = NULL;
+	unsigned int val;
+	int warn = 0;
+	int arg;
+	struct act_rule *rule;
+	unsigned int where;
+	const struct acl *acl;
+	const char *kw;
+
+	if (!*args[1]) {
+		if (curpx == defpx)
+			memprintf(err, "missing argument for '%s' in defaults section", args[0]);
+		else
+			memprintf(err, "missing argument for '%s' in %s '%s'",
+			          args[0], proxy_type_str(curpx), curpx->id);
+		return -1;
+	}
+
+	if (strcmp(args[1], "inspect-delay") == 0) {
+		if (curpx == defpx && strlen(defpx->id) == 0) {
+			memprintf(err, "%s %s is not allowed in anonymous 'defaults' sections",
+				  args[0], args[1]);
+			return -1;
+		}
+
+		if (!*args[2] || (ptr = parse_time_err(args[2], &val, TIME_UNIT_MS))) {
+			memprintf(err,
+			          "'%s %s' expects a positive delay in milliseconds, in %s '%s'",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+
+			if (ptr == PARSE_TIME_OVER)
+				memprintf(err, "%s (timer overflow in '%s', maximum value is 2147483647 ms or ~24.8 days)", *err, args[2]);
+			else if (ptr == PARSE_TIME_UNDER)
+				memprintf(err, "%s (timer underflow in '%s', minimum non-null value is 1 ms)", *err, args[2]);
+			else if (ptr)
+				memprintf(err, "%s (unexpected character '%c')", *err, *ptr);
+			return -1;
+		}
+
+		if (curpx->tcp_req.inspect_delay) {
+			memprintf(err, "ignoring %s %s (was already defined) in %s '%s'",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+			return 1;
+		}
+		curpx->tcp_req.inspect_delay = val;
+		return 0;
+	}
+
+	rule = new_act_rule(0, file, line);
+	if (!rule) {
+		memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+		return -1;
+	}
+	LIST_INIT(&rule->list);
+	arg = 1;
+	where = 0;
+
+	if (strcmp(args[1], "content") == 0) {
+		arg++;
+
+		if (curpx->cap & PR_CAP_FE)
+			where |= SMP_VAL_FE_REQ_CNT;
+		if (curpx->cap & PR_CAP_BE)
+			where |= SMP_VAL_BE_REQ_CNT;
+		rule->from = ACT_F_TCP_REQ_CNT;
+		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+			goto error;
+
+		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+		if (acl) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+					  acl->name, args[0], args[1], sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+					  args[0], args[1],
+					  LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+					  sample_ckp_names(where));
+
+			warn++;
+		}
+		else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+					  acl->name, kw, sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+					  kw, sample_ckp_names(where));
+			warn++;
+		}
+
+		/* the following function directly emits the warning */
+		warnif_misplaced_tcp_cont(curpx, file, line, args[0]);
+		LIST_APPEND(&curpx->tcp_req.inspect_rules, &rule->list);
+	}
+	else if (strcmp(args[1], "connection") == 0) {
+		arg++;
+
+		if (!(curpx->cap & PR_CAP_FE)) {
+			memprintf(err, "%s %s is not allowed because %s %s is not a frontend",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+			goto error;
+		}
+
+		where |= SMP_VAL_FE_CON_ACC;
+		rule->from = ACT_F_TCP_REQ_CON;
+		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+			goto error;
+
+		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+		if (acl) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+					  acl->name, args[0], args[1], sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+					  args[0], args[1],
+					  LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+					  sample_ckp_names(where));
+
+			warn++;
+		}
+		else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+					  acl->name, kw, sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+					  kw, sample_ckp_names(where));
+			warn++;
+		}
+
+		/* the following function directly emits the warning */
+		warnif_misplaced_tcp_conn(curpx, file, line, args[0]);
+		LIST_APPEND(&curpx->tcp_req.l4_rules, &rule->list);
+	}
+	else if (strcmp(args[1], "session") == 0) {
+		arg++;
+
+		if (!(curpx->cap & PR_CAP_FE)) {
+			memprintf(err, "%s %s is not allowed because %s %s is not a frontend",
+			          args[0], args[1], proxy_type_str(curpx), curpx->id);
+			goto error;
+		}
+
+		where |= SMP_VAL_FE_SES_ACC;
+		rule->from = ACT_F_TCP_REQ_SES;
+		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+			goto error;
+
+		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+		if (acl) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+					  acl->name, args[0], args[1], sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+					  args[0], args[1],
+					  LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+					  sample_ckp_names(where));
+			warn++;
+		}
+		else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+			if (acl->name && *acl->name)
+				memprintf(err,
+					  "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+					  acl->name, kw, sample_ckp_names(where));
+			else
+				memprintf(err,
+					  "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+					  kw, sample_ckp_names(where));
+			warn++;
+		}
+
+		/* the following function directly emits the warning */
+		warnif_misplaced_tcp_sess(curpx, file, line, args[0]);
+		LIST_APPEND(&curpx->tcp_req.l5_rules, &rule->list);
+	}
+	else {
+		if (curpx == defpx)
+			memprintf(err,
+			          "'%s' expects 'inspect-delay', 'connection', or 'content' in defaults section (got '%s')",
+			          args[0], args[1]);
+		else
+			memprintf(err,
+			          "'%s' expects 'inspect-delay', 'connection', or 'content' in %s '%s' (got '%s')",
+			          args[0], proxy_type_str(curpx), curpx->id, args[1]);
+		goto error;
+	}
+
+	return warn;
+ error:
+	free_act_rule(rule);
+	return -1;
+}
+
+static struct cfg_kw_list cfg_kws = {ILH, {
+	{ CFG_LISTEN, "tcp-request",  tcp_parse_tcp_req },
+	{ CFG_LISTEN, "tcp-response", tcp_parse_tcp_rep },
+	{ 0, NULL, NULL },
+}};
+
+INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */