[PATCH] channel: check for closed state in waitwindow loops

[Jon Simons <jon@xxxxxxxxxxxxx>]

Hi,

Attached is a patch for also checking the current channel's close state
in the 'waitwindow' loops.  With this patch I was able to fix an issue I
hit while testing with multiple channels per client session.  Sometimes
a channel close would not otherwise be detected in these loops.


-Jon

From 76b56f2f7a6fc69cefdf8d21473a75476a79e8bc Mon Sep 17 00:00:00 2001
From: Jon Simons <jon@xxxxxxxxxxxxx>
Date: Wed, 26 Feb 2014 18:51:24 -0800
Subject: [PATCH] channel: check for closed state in waitwindow loops

Signed-off-by: Jon Simons <jon@xxxxxxxxxxxxx>
---
 src/channels.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/channels.c b/src/channels.c
index 51e96fe..85a3ebc 100644
--- a/src/channels.c
+++ b/src/channels.c
@@ -1238,7 +1238,8 @@ error:
 static int ssh_channel_waitwindow_termination(void *c){
   ssh_channel channel = (ssh_channel) c;
   if (channel->remote_window > 0 ||
-      channel->session->session_state == SSH_SESSION_STATE_ERROR)
+      channel->session->session_state == SSH_SESSION_STATE_ERROR ||
+      channel->state == SSH_CHANNEL_STATE_CLOSED)
     return 1;
   else
     return 0;
@@ -1345,7 +1346,8 @@ int channel_write_common(ssh_channel channel, const void *data,
               ssh_channel_waitwindow_termination,channel);
           if (rc == SSH_ERROR ||
               !ssh_channel_waitwindow_termination(channel) ||
-              channel->session->session_state == SSH_SESSION_STATE_ERROR)
+              channel->session->session_state == SSH_SESSION_STATE_ERROR ||
+              channel->state == SSH_CHANNEL_STATE_CLOSED)
             goto out;
           continue;
       }
-- 
1.8.4.21.g992c386