Charles,
The version we use here is much modified in the socket area, so this is
general information rather than a specific answer.
The issue with TCP is that you need a socket to listen for received calls on
and a separate socket to make calls on. In Linux you cannot use one socket
for both as we do for UDP. It is actually worse than that; I found it also
impossible to use the same port for the listen and making calls. So if you
make a TCP call you have to rely on the called party sending the answers on
that call and not calling you back - or you set a contact on a different
port. Port agility (which is easy in UDP) is a nightmare in TCP.
I hope this helps.
Peter
_____
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Charles P
Wright
Sent: 21 February 2007 21:48
To: [email protected]
Subject: [Sipp-users] Understanding main_socket vs. tcp_multiplex
Can someone explain the difference between the main_socket and the
tcp_multiplex socket? It seems that the TCP multiplex socket should only be
used if we are using -t t1 (otherwise each call gets its own socket). But,
why are things sent over the tcp_multiplex socket instead of just the
main_socket?
Charles
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