K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2011-04-18T17:43:16.595725Z
K 7
svn:log
V 585
When checking to see if a window update should be sent to the remote peer,
don't force a window update if the window would not actually grow due to
window scaling.  Specifically, if the window scaling factor is larger than
2 * MSS, then after the local reader has drained 2 * MSS bytes from the
socket, a window update can end up advertising the same window.  If this
happens, the supposed window update actually ends up being a duplicate ACK.
This can result in an excessive number of duplicate ACKs when using a
higher maximum socket buffer size.

Reviewed by:	bz
MFC after:	1 month

END