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authorandre <andre@FreeBSD.org>2007-06-09 19:39:14 +0000
committerandre <andre@FreeBSD.org>2007-06-09 19:39:14 +0000
commite8333a59d1ace09b4998aafca6c29d5fd5ccb23d (patch)
tree6e5f8c844161d7851127721a3cce877e0488410c /sys/netinet
parentc105658c88a2c2055d81325040ae51c145564d21 (diff)
downloadFreeBSD-src-e8333a59d1ace09b4998aafca6c29d5fd5ccb23d.zip
FreeBSD-src-e8333a59d1ace09b4998aafca6c29d5fd5ccb23d.tar.gz
Don't send pure window updates when the peer has closed the connection
and won't ever send more data.
Diffstat (limited to 'sys/netinet')
-rw-r--r--sys/netinet/tcp_output.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c
index acd99d0..d8adff3 100644
--- a/sys/netinet/tcp_output.c
+++ b/sys/netinet/tcp_output.c
@@ -528,8 +528,11 @@ after_sack_rexmit:
* max size segments, or at least 50% of the maximum possible
* window, then want to send a window update to peer.
* Skip this if the connection is in T/TCP half-open state.
+ * Don't send pure window updates when the peer has closed
+ * the connection and won't ever send more data.
*/
- if (recwin > 0 && !(tp->t_flags & TF_NEEDSYN)) {
+ if (recwin > 0 && !(tp->t_flags & TF_NEEDSYN) &&
+ !TCPS_HAVERCVDFIN(tp->t_state)) {
/*
* "adv" is the amount we can increase the window,
* taking into account that we are limited by
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