January 2016
Intermediate to advanced
384 pages
8h 6m
English
book
Building Telephony Systems with OpenSIPS - Second Edition
by Flavio E. Goncalves, Flavio E Goncalves, Bogdan-Andrei Iancu
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TCP handling
TCP is gaining ground as a transport protocol for SIP. The limitations on the size of the UDP packet are creating challenges for applications, such as presence. Additionally, when a request traverses a large number of proxies with big SIP headers and SDP content, it is not uncommon to have overflows. To enable TCP on OpenSIPS is fairly straightforward; however, it is important to pay some attention to a few details.
Enabling TCP
TCP is now a module, so to enable TCP for use with OpenSIPS, use the following command:
loadmoduleproto_tcp.so
There are a few module parameters for TCP that deserve mention:
modparam("proto_tcp", "tcp_async", 0)The preceding parameter sets OpenSIPS to handle the TCP connection asynchronously. The default setting ...
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