GitLab

Fix nonce reutilization test: since everything is not cleared before each test, compare with previous value instead of 0

The object-oriented architecture was not used correctly for the TLS channel. The call to belle_sip_channel_set_socket was reinitializing the belle_sip_source_t and so erasing the timeout value initialized by stream_channel_connect.
The fix is to just replace the notify callback (that was the only goal of the call to belle_sip_channel_set_socket).
Also added a unit test to check this.

Use specific background task for HTTP transfers, otherwise the channel might hang when an iOS app goes into background

cleaner weak ref management

Fix DNS resolution on Windows by calling WSAStartup when creating the resolver (this is needed so that gethostname() do not fail).

- reception to be implemented
- flexible boundary to be implemented
- managing part content-type to be implemented