Add close to input stream and cleanup socket and streams

tests/standalone/src/SocketCloseTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Test socket close events.
 
 
 final SERVERSHUTDOWN = -1;
 final ITERATIONS = 10;
 
 
-// Run the close test in these different "modes".
-// 0: Client closes without sending at all.
-// 1: Client sends and closes.
-// 2: Client sends. Server closes.
-// 3: Client sends. Server responds and closes.
-// 4: Client sends and half-closes. Server responds and closes.
-// 5: Client sends. Server responds and half closes.
-// 6: Client sends and half-closes. Server responds and half closes.
-class SocketCloseTest {
-  static void testMain() {
-    new SocketClose.start(0);
-    new SocketClose.start(1);
-    new SocketClose.start(2);
-    new SocketClose.start(3);
-    new SocketClose.start(4);
-    new SocketClose.start(5);
-    new SocketClose.start(6);
-  }
-}
-
-
 class SocketClose {
 
   SocketClose.start(mode)
       : _receivePort = new ReceivePort(),
         _sendPort = null,
         _dataEvents = 0,
         _closeEvents = 0,
         _errorEvents = 0,
         _iterations = 0,
         _mode = mode {
@@ skipping 287 matching lines @@
   ServerSocket _server;
   int _errorEvents;
   int _dataEvents;
   int _closeEvents;
   int _iterations;
   int _mode;
 }
 
 
 main() {
-  SocketCloseTest.testMain();
+  // Run the close test in these different "modes".
+  // 0: Client closes without sending at all.
+  // 1: Client sends and closes.
+  // 2: Client sends. Server closes.
+  // 3: Client sends. Server responds and closes.
+  // 4: Client sends and half-closes. Server responds and closes.
+  // 5: Client sends. Server responds and half closes.
+  // 6: Client sends and half-closes. Server responds and half closes.
+  new SocketClose.start(0);
+  new SocketClose.start(1);
+  new SocketClose.start(2);
+  new SocketClose.start(3);
+  new SocketClose.start(4);
+  new SocketClose.start(5);
+  new SocketClose.start(6);
 }