SIP stack libre: creating simple OPTIONS SIP request
Libre is a powerful and simple library than implements SIP and many other real-time communication protocol. Full list of features and protocols can be found on its web-page: http://creytiv.com/re.html . There are several open source SIP stacks on C available: Libre Sofia-SIP PJSIP libeXosip2 reSIProcate bell-sip I have tried do some simple SIP UA with four of them: libre, sofia-sip, pjsip and libeXosip2. These scripts can be found at my github project . Some of them are used with big projects. For example, PJSIP is now a part of Asterisk project (starting from version 11) and Sofia-sip is a core SIP library of FreeSWITCH project. Asterisk team has made some good research on SIP Stacks when they were chosing one for their project. It can be found here: https://wiki.asterisk.org/wiki/display/AST/SIP+Stack+Research I do like sofia-sip, but, unfortunately, it was not updated for very long time (since 2011). Libre looks like relatively new to other...