Module: kamailio Branch: 5.5 Commit: e43ea4b3e011e410ec36bb470889170f836e93b5 URL: https://github.com/kamailio/kamailio/commit/e43ea4b3e011e410ec36bb470889170… Author: Federico Cabiddu <federico.cabiddu(a)gmail.com> Committer: Federico Cabiddu <federico.cabiddu(a)gmail.com> Date: 2021-10-24T11:12:03+02:00 core: tcp - add alias for cinfo dst IP (cherry picked from commit 110200ce8e5c4cf7500e57e27a23f76e18044ad5) --- Modified: src/core/tcp_main.c --- Diff: https://github.com/kamailio/kamailio/commit/e43ea4b3e011e410ec36bb470889170… Patch: https://github.com/kamailio/kamailio/commit/e43ea4b3e011e410ec36bb470889170… --- diff --git a/src/core/tcp_main.c b/src/core/tcp_main.c index 3b46026027..4338806ce6 100644 --- a/src/core/tcp_main.c +++ b/src/core/tcp_main.c @@ -1478,7 +1478,12 @@ inline static struct tcp_connection* tcpconn_add(struct tcp_connection *c) * the second alias is for (peer_ip, peer_port, local_addr, 0) -- for * finding any conenction to peer_ip, peer_port from local_addr * the third alias is for (peer_ip, peer_port, local_addr, local_port) - * -- for finding if a fully specified connection exists */ + * -- for finding if a fully specified connection exists + * the fourth alias is for (peer_ip, peer_port, cinfo_addr, 0) -- for + * finding any connection to peer_ip, peer_port from address stored into cinfo (e.g. when proxy protocol is used) + * the fifth alias is for (peer_ip, peer_port, cinfo_addr, cinfo_port) + * -- for finding if a fully specified connection exists using address + * and port stored into cinfo*/ _tcpconn_add_alias_unsafe(c, c->rcv.src_port, &zero_ip, 0, new_conn_alias_flags); if (likely(c->rcv.dst_ip.af && ! ip_addr_any(&c->rcv.dst_ip))){ @@ -1487,6 +1492,14 @@ inline static struct tcp_connection* tcpconn_add(struct tcp_connection *c) _tcpconn_add_alias_unsafe(c, c->rcv.src_port, &c->rcv.dst_ip, c->rcv.dst_port, new_conn_alias_flags); } + if (unlikely(c->cinfo.dst_ip.af && ! ip_addr_any(&c->cinfo.dst_ip) && + ! ip_addr_cmp(&c->rcv.dst_ip, &c->cinfo.dst_ip))){ + _tcpconn_add_alias_unsafe(c, c->rcv.src_port, &c->cinfo.dst_ip, 0, + new_conn_alias_flags); + _tcpconn_add_alias_unsafe(c, c->rcv.src_port, &c->cinfo.dst_ip, c->cinfo.dst_port, + new_conn_alias_flags); + } + /* ignore add_alias errors, there are some valid cases when one * of the add_alias would fail (e.g. first add_alias for 2 connections * with the same destination but different src. ip*/ @@ -1604,7 +1617,8 @@ struct tcp_connection* _tcpconn_find(int id, struct ip_addr* ip, int port, ((l_port==0) || (l_port==a->parent->rcv.dst_port)) && (ip_addr_cmp(ip, &a->parent->rcv.src_ip)) && (is_local_ip_any || - ip_addr_cmp(l_ip, &a->parent->rcv.dst_ip)) + ip_addr_cmp(l_ip, &a->parent->rcv.dst_ip) || + ip_addr_cmp(l_ip, &a->parent->cinfo.dst_ip)) ) { LM_DBG("found connection by peer address (id: %d)\n", a->parent->id);