TRAVERSAL OF SYMMETRIC NETWORK ADDRESS TRANSLATOR FOR MULTIPLE SIMULTANEOUS CONNECTIONS

摘要

Handling of multiple connections during NAT traversal for a node behind a symmetric NAT is disclosed. The likelihood of connection failure during symmetric NAT traversal may be reduced by serializing critical time windows after port prediction. Once a connection request has been sent for a first connection, port prediction for a subsequent connection may be delayed until a connectivity check has begun for the first connection. This process may be repeated to handle NAT traversal for multiple simultaneous connections to different nodes.

主权项

1. A method for peer-to-peer connection over a network between a first node behind a first symmetric network address translator (NAT) and two or more other nodes, the method comprising:
a) performing a check of connectivity between the first node and a second node using one or more predicted transport addresses; and b) delaying port prediction for communication between the first node and a third node until after the check of connectivity between the first node and the second node has begun.