[reSIProcate] UdpTransport
For basiccall example.
In the UdpTransport.cxx
I found the method sendto and recvform.
For the REGISTER.
After recvform received a response "401 unauthorized" it will copied
the content of response and add in the message header the information
for authentication.
How did it happened in UdpTransport? which methods did author use
to do a new message request for REGISTER?