2009/2/26 Jerry Richards <jer...@tonecommander.com>: > Do you mean that you don't want to bind the TCP connection to port 5060, > because some other program might be using it? Or some other program might > close that port? We have a hard-phone and I know nothing else except > sofia-sip would use that port number.
The port 5060 is used by Sofia SIP itself for serving incoming INVITE and friends. Serious problems refer to the situation where you have a TCP connection, it gets closed, and when you try to open another, you can not, because the new one has exactly the same source-ip-port/destination-ip-port tuple. (The bright idea of making port 5060 as source port for client connections has occurred to me, too, and it simply does not work. And at least Linux makes its hardest to prevent you from shooting yourself into foot (or head) as binding a client-side tcp connection to same port as you use for a server is practically impossible.) --Pekka > > -----Original Message----- > From: Pekka Pessi [mailto:ppe...@gmail.com] > Sent: Thursday, February 26, 2009 12:15 PM > To: Jerry Richards > Cc: sofia-sip-devel@lists.sourceforge.net > Subject: Re: [Sofia-sip-devel] TCP Source Port 3072? > > 2009/2/26 Jerry Richards <jer...@tonecommander.com>: >> Hello All, >> >> When I configure the sofia transport=udp, then I see SIP UDP packets >> sent with source port 5060 and destination port 5060. When the only >> change I make is transport=tcp, then I see SIP TCP packets sent with >> source port 3072 and destination port 5060. >> >> Has anyone seen this? Maybe I'm missing a tag or there is something >> weird happening in my TCP/IP stack? > > This is perfectly normal for TCP. The source port is not usually bind to any > known value but system selects an ephemeral port for it. (If it was, we > would run into serious problems if the connection ever got > closed.) > > -- > Pekka.Pessi mail at nokia.com > > -- Pekka.Pessi mail at nokia.com ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
