Socket keepalive time. For TCP, the default keep-alive timeout is 2 hours and the keep-alive interval is 1 second. 4) The time (in seconds) the connection needs to remain idle before TCP starts sending keepalive probes, if the socket option SO_KEEPALIVE has been set on this socket. If no ACK response is received for nine consecutive times, the connection is marked as broken. Specifies a socket-specific timer value that remains in effect until it is respecified by the SetSockOpt option or until the socket is closed. TCP keepalive process waits for two hours (7200 secs) for socket activity before sending the first keepalive probe, and then resend it every 75 seconds. Apr 19, 2023 · The SO_KEEPALIVE socket option is valid only for protocols that support the notion of keep-alive (connection-oriented protocols). Please note that the following tuning is for linux operating system only. TCP_KEEPIDLE (since Linux 2. This means that the keepalive routines wait for two hours (7200 secs) before sending the first keepalive probe, and then resend it every 75 seconds. If you would like to configure the Keep-Alive timeout on your machine, see the "Changing TCP Timeouts" section below. As long as there is TCP/IP socket communications going on and active, no keepalive packets are needed. . Sep 26, 2009 · The short answer is yes there is a timeout enforced via TCP Keep-Alive, so no the socket won't remain open forever but will probably time out after a few hours. May 17, 2019 · The TCP KeepAlive (socket option SO_KEEPALIVE) is governed by three options—time after which the mechanism triggers, probing interval, and number of failed probes after which the connecting is declared broken. Timeout values in the range 1 – 2 147 460 seconds (or 0) are valid for TCP_KeepAlive. afshq vanhr aymr hmaeylr krtl psa bygoexre lfci edc xntfkgk