Merge pull request #710 from JacobBarthelmeh/scp_example

add check for channel closed error

Author: ejohnstown

examples/scpclient/scpclient.c

@@ -313,7 +313,9 @@ THREAD_RETURN WOLFSSH_THREAD scp_client(void* args)
 
     ret = wolfSSH_shutdown(ssh);
     /* do not continue on with shutdown process if peer already disconnected */
-    if (ret != WS_SOCKET_ERROR_E && wolfSSH_get_error(ssh) != WS_SOCKET_ERROR_E) {
+    if (ret != WS_CHANNEL_CLOSED && ret != WS_SOCKET_ERROR_E &&
+            wolfSSH_get_error(ssh) != WS_SOCKET_ERROR_E &&
+            wolfSSH_get_error(ssh) != WS_CHANNEL_CLOSED) {
         if (ret != WS_SUCCESS) {
             err_sys("Sending the shutdown messages failed.");
         }

src/ssh.c

@@ -1000,7 +1000,7 @@ int wolfSSH_shutdown(WOLFSSH* ssh)
 
     if (ssh != NULL && ssh->channelList == NULL) {
         WLOG(WS_LOG_DEBUG, "channel list was already removed");
-        ret = WS_SUCCESS;
+        ret = WS_CHANNEL_CLOSED;
     }
 
     WLOG(WS_LOG_DEBUG, "Leaving wolfSSH_shutdown(), ret = %d", ret);