Merge pull request #1225 from strawd/bug22307

[mono.git] / mcs / class / System.ServiceModel / System.ServiceModel.Dispatcher / ChannelDispatcher.cs

diff --git a/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/ChannelDispatcher.cs b/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/ChannelDispatcher.cs
index c005094275c5a9c5020dc612fd811eeb8fa8af98..65b5c8cf38ae6913b2482b54609ecc8ee45064e4 100644 (file)
--- a/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/ChannelDispatcher.cs
+++ b/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/ChannelDispatcher.cs
@@ -455,8 +455,11 @@ namespace System.ServiceModel.Dispatcher
                        public void CloseInput ()
                        {
                                foreach (var ch in channels.ToArray ()) {
-                                       if (ch.State == CommunicationState.Closed)
-                                               RemoveChannel (ch);
+                                       if (ch.State == CommunicationState.Closed) {
+                                               lock (channels) {
+                                                       RemoveChannel (ch);
+                                               }
+                                       }
                                        else {
                                                try {
                                                        ch.Close (close_timeout - (DateTime.Now - close_started));