Topic: Automatic UDP forwarding
There are two machines, both in a house network behind a router, on application which exchanges the data with remote machine on RTP is by turns tested. Is read and obeys two UDP a socket on different ports. When I start application by one machine the data comes only on the first port when I launch by the second machine, the data comes only on the second port. Sometimes all works correctly, and the data comes to both ports. I somewhere read that if application sends the data in defined UDP port of a remote node and simultaneously causes bind (2) for the same port the router automatically installs port forwarding for some time. But search gives nothing, and I do not know an exact title of this technology. Under the description approaches Firewall pinhole, but I cannot find technical details.