daemon: TLS locked into SYN cookie step
Issue generated from Tuleap's migration script. Originally submitted by: Guillaume Roguez (guillaume)
If we try do place a call, the callee after ICE connection tries to place a DTLS session.
This step starts with a SYN cookie exchange.
But if the caller (client) stops at this point all connection (we're on UDP, so no more packt at server side, the callee), the server waits for-ever in this state, and UI client never stop to display a "in-ringing" call.
This leds in many side-effect in UI clients, BTW.