avsm/mirage — pull request #80 by balrajsingh (2011-12-09 18:16:21+00:00)
Title: fix to recover correctly from packet loss

...are valid

To correctly recover from the condition when critical acks are lost, packets upto one window old must be accepted. These packets should not produce RSTs and should instead be responded to with a current ack. This is also required for tcp keepalive to work correctly.