Hi, if the UA run in LAN, but the LAN no internet connection, called UdpTransport::stunSendTest cause resip_assert triggered, in UdpTransport::processTxOne function, below line triggered:
resip_assert( sendData->destination.getPort() != 0 );
I suggest don't use assert here, just return the function directly if the port is 0.
if (sendData->destination.getPort() == 0)
{
return;
}
BR