v2.2.1

What's Changed

• Fixed missing __init__.py causing module not found + "TypeError: must be str, not bytes" by @andrewvmail in #55
• Mulipart fixes by @eckschi in #53
• Fixed RFC3261-compatibility issue requiring to put Contact into 18x-class provisional responses
• API changes: Make the 'expires' parameter in the outbound REGISTER configurable; Extend genResponse() so it can also insert SipReason; Allow list of extra headers to be provided into the cancelTransaction() method, unify and cleanup RFC3326 support (Reason header field)
• Adjust WSS support to work with the latest version of the websockets.serve
• Improved SdpParseError exception handling
• CI pipeline fixes and improvements: Installation from pip sdist is now verified; B2BUA code is tested with VoIPTests on every commit for 6 different architectures; Added job to roll source code tarball and publish pre-release notes on GitHub automatically; Switched from using ubuntu-20.04 to ubuntu-22.04
• Performance improvements: Number of UDP workers has been reduced from 30 to 3 for SIP sockets and to 1 for the RTPProxy sockets, this helps to keep things sane on smaller systems

New Contributors

• @andrewvmail made their first contribution in #55
• @eckschi made their first contribution in #53

Full Changelog: RELENG_2_2_0...v2.2.1