Locate sessions by proxy processes directly
Multiple REGISTER bindings support
Move some code in a separate function
Process gen_server timeouts correctly
Check for 'max_user_sessions' option
Rewrite 'Contact' headers in REGISTER requests
Don't use erlang:integer_to_binary/1
Do not proxy stray responses statelessly (as per RFC 6026)
Optimize request processing
Fix CSeq comparison
Some cleanup
Remove empty line
Forking support
Remove unused function
Always enable SIP at compile time