Peer-to-peer communication traversing symmetric network address translators
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United States of America Patent
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Jul 17, 2012
Grant Date -
Apr 5, 2007
app pub date -
Oct 4, 2005
filing date -
Oct 4, 2005
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Abstract
Disclosed are systems and methods for peer-to-peer communication over a network between a first node behind a first network address translator (NAT) and a second node behind a second NAT, despite the first NAT and the second NAT intervening between the first and second nodes. The first NAT is a Symmetric NAT. A port prediction is performed wherein the first node constructs a list of predicted transport addresses on the first NAT. A message containing the list of predicted transport addresses is sent from the first node to the second node. A connectivity check is performed with the second node using the predicted transport addresses.
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