ctylihuai left a comment (kamailio/kamailio#4238)
listen cfg config：
listen=tcp:PCSCF_IP:5460 #!define TCP_PROCESSES 48 tcp_async= yes # Alias name: tcp_buf_write tcp_conn_wq_max = 16384 tcp_rd_buf_size = 16384 tcp_wq_max = 16777216 #tcp_defer_accept = 5 #tcp_keepidle = 7200 #tcp_keepintvl = 75 #tcp_keecnt = 10 tcp_poll_method= epoll_lt tcp_send_timeout = 10 tcp_syncnt = 2 tcp_delayed_ack = no tcp_max_connections = 1000000 tcp_accept_haproxy=no tcp_reuse_port = yes tcp_keepalive = yes tcp_keepcnt = 3 tcp_keepidle = 120 tcp_keepintvl = 75 tcp_listen_backlog = 10240 tcp_clone_rcvbuf=1 #tcp_msg_read_timeout=120 #tcp_msg_data_timeout=120 tcp_accept_iplimit =0 tcp_connection_lifetime=3615 tcp_accept_aliases=no # Enable SIP outbound TCP keep-alive using PING-PONG (CRLFCRLF - CRLF). tcp_crlf_ping=yes tcp_accept_no_cl=yes #!ifdef TCP_PROCESSES tcp_children=TCP_PROCESSES loadmodule "tcpops" modparam("tcpops", "closed_event", 2) event_route[tcp:closed] { route(TCPEVENT); event_route[tcp:reset] { route(TCPEVENT); event_route[tcp:timeout] { route(TCPEVENT);