Add 'address' and 'port' to SocketException, and include them in toString().

sdk/lib/io/socket.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 
 /**
  * [InternetAddressType] is the type an [InternetAddress]. Currently,
  * IP version 4 (IPv4) and IP version 6 (IPv6) are supported.
@@ skipping 449 matching lines @@
   InternetAddress get address;
 
   /**
    * Returns the remote host connected to by this socket.
    */
   String get remoteHost;
 }
 
 
 class SocketException implements IOException {
-  const SocketException([String this.message = "",
-                         OSError this.osError = null]);
+  final String message;
+  final OSError osError;
+  final InternetAddress address;
+  final int port;
+
+  const SocketException(String this.message,
+                        {OSError this.osError,
+                         InternetAddress this.address,
+                         int this.port});
+
   String toString() {
     StringBuffer sb = new StringBuffer();
     sb.write("SocketException");
     if (!message.isEmpty) {
       sb.write(": $message");
       if (osError != null) {
         sb.write(" ($osError)");
       }
     } else if (osError != null) {
       sb.write(": $osError");
     }
+    if (address != null) {
+      if (address.host.isNotEmpty) {
+        sb.write(", address = ${address.host}");
+      } else {
+        sb.write(", address = ${address.address}");
+      }
+    }
+    if (port != null) {
+      sb.write(", port = $port");
+    }
     return sb.toString();
   }
-  final String message;
-  final OSError osError;
 }