The sipua project provides a library for writing SIP user agents in Python, with a focus on correctness and composability. It can be used to write clients, servers or proxies.

Its features include:

• A transport layer supporting UDP, TCP and WebSocket.
• A transaction layer for stateful user agents and proxies.
• An RTP and RTCP stack with optional support for ICE and DTLS-SRTP.

To learn more about sipua please read the documentation.

sipua is released under the BSD license.