<div dir="ltr"><a href="http://stackoverflow.com/questions/1480236/does-a-tcp-socket-connection-have-a-keep-alive">http://stackoverflow.com/questions/1480236/does-a-tcp-socket-connection-have-a-keep-alive</a><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 5, 2015 at 1:50 PM, Babak Yakhchali <span dir="ltr"><<a href="mailto:babak.freeswitch@gmail.com" target="_blank">babak.freeswitch@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">no. if socket is closed, an exception is thrown and you can catch it and handle it. but if for example your connection is lost, socket will be open till keep alive timer expires. this keep alive is os based and you can not set it for every socket (may be I'm wrong about this part).</div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 5, 2015 at 1:44 PM, Michael Jerris <span dir="ltr"><<a href="mailto:mike@jerris.com" target="_blank">mike@jerris.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">are you saying Java provides no way to detect a tcp socket disconnect?<div><div><span></span><br><br>On Wednesday, August 5, 2015, Babak Yakhchali <<a href="mailto:babak.freeswitch@gmail.com" target="_blank">babak.freeswitch@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">but if for example network connection is lost the socket will remain open forever!</div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 5, 2015 at 12:04 PM, Michael Jerris <span dir="ltr"><<a>mike@jerris.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I would just detect the socket closing instead of using a heartbeat for sure <div><div><br><br>On Wednesday, August 5, 2015, Babak Yakhchali <<a>babak.freeswitch@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi<br>I'm using pure java sockets (not current available esl implementations) with event_socket to control sessions. to detect lan disconnects I'm using session_heartbeat events every 1 second (this is adjustable). Considering performance is this a bad approach or not ? any better suggestions?<br>if I execute enable_heartbeat before answering the call this message is printed on console:<br>switch_core_session.c:1555 sofia/internal/<a>1000@172.16.90.1</a> using scheduler due to bypass media or media is not established.<br><div><br></div><div>should I answer the session before calling enable_heartbeat?</div><div>thanks</div></div>
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