Enable keepalive for message port connections on windows

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@27320 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,10 @@
+2008-12-17  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Source/NSConnection.m:
+	* Tools/gdnc.m:
+	Enable keepalive only on mswindows and for server connections using
+	NSMessagePort.
+
 2008-12-16  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSLock.m: Tiny cleanup of lock finalisation process.

Source/NSConnection.m

@@ -1634,6 +1634,16 @@ static NSLock	*cached_proxies_gate = nil;
 - (void) setRootObject: (id)anObj
 {
   setRootObjectForInPort(anObj, _receivePort);
+#if	defined(__MINGW32__)
+  /* On ms-windows, the operating system does not inform us when the remote
+   * client of a message port goes away ... so we need to enable keepalive
+   * to detect that condition.
+   */
+  if ([_receivePort isKindOfClass: [NSMessagePort class]])
+    {
+      [self _enableKeepalive];
+    }
+#endif
 }
 
 /**

Tools/gdnc.m

@@ -174,10 +174,6 @@ ihandler(int sig)
 }
 @end
 
-@interface	NSConnection (Private)
-- (void) _enableKeepalive;
-@end
-
 @interface	GDNCNotification : NSObject
 {
 @public
@@ -448,14 +444,6 @@ ihandler(int sig)
   conn = [[NSConnection alloc] initWithReceivePort: port sendPort: nil];
   [conn setRootObject: self];
 
-  /* For ms-windows we need to enable keepalive on the connection so that
-   * we will find out if the remote end goes away.
-   */
-  if ([conn respondsToSelector: @selector(_enableKeepalive)])
-    {
-      [conn _enableKeepalive];
-    }
-
   if ([hostname length] == 0
     || [[NSHost hostWithName: hostname] isEqual: [NSHost currentHost]] == YES)
     {