david 637ba35a28 Count an ACK right after counting a drop for a retransmitted reply. ...

We count a drop for congestion control purposes if we receive a response
to a retransmitted probe, because that means that the reply to the
original probe was dropped. However, we weren't taking into account that
we are at the same time receiving a positive response, and should
increase the window accordingly. There are now three things that can
happen:

Response to first probe:	ACK
Response to retransmission:	DROP, then ACK
Probe timeout:			DROP

2011-12-31 21:59:58 +00:00

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