From 6b69f42e70fb769cdd2d157ada5ec0324553f3cb Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Thu, 10 Jan 2002 13:29:43 +0000
Subject: [PATCH] Extra safety feature to avoid sending SSH2_MSG_WINDOW_ADJUST
 on a nonexistent channel. I don't quite know why this was happening, but
 whatever it was this ought to fix it.

git-svn-id: svn://svn.tartarus.org/sgt/putty@1540 cda61777-01e9-0310-a592-d414129be87e
---
 ssh.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ssh.c b/ssh.c
index b8abc5ba..8fac5680 100644
--- a/ssh.c
+++ b/ssh.c
@@ -3734,6 +3734,14 @@ static int ssh2_try_send(struct ssh_channel *c)
  */
 static void ssh2_set_window(struct ssh_channel *c, unsigned newwin)
 {
+    /*
+     * Never send WINDOW_ADJUST for a channel that the remote side
+     * already thinks it's closed; there's no point, since it won't
+     * be sending any more data anyway.
+     */
+    if (c->closes != 0)
+	return;
+
     if (newwin > c->v.v2.locwindow) {
 	ssh2_pkt_init(SSH2_MSG_CHANNEL_WINDOW_ADJUST);
 	ssh2_pkt_adduint32(c->remoteid);
-- 
2.11.0