just do IT

In sip protocol, the difficult thing is the liecycle of sip elements, including dialog, transaction and message. Though defined as different layers in sip, their lifecycle usually overlaps. Message is the layer at the bottom. Transaction is the layer above

As I posted before, logging is an important debugging means. In order to be truly useful and convenient, the logging module should at lease have two traits: can be turned on and off globally supports the concept of logging level osip also comes with a matu

As described in rfc3261, sip is a layered protocol. Its layers are shown in the image below.Unlike other sophisicated sip libiraies, exosip, pjsip, mjsip, which implement all layers of sip protocol, oSip library doesn't implement transport layer. oSip clai

What is SIPSIP Protocol is one of widely used signaling protocol, with the main purpose of, as its name is abbreviated for, initialization session between several participants. Due to its nature, it's mainly used in VOIP, IM applications.Basics of SIPBeca

I was debugging memory leak bugs recently. The bug was caused by incorrect usage of the osip library. It's not uncommon that we meet problems when we rely on a library or framework that we don't fully understand. Symptom and debugging The symptom is our