Introduce optional 'bool shared' parameter to ServerSocket.bind() ...

dart/sdk/lib/io/secure_server_socket.dart

Index: dart/sdk/lib/io/secure_server_socket.dart
diff --git a/dart/sdk/lib/io/secure_server_socket.dart b/dart/sdk/lib/io/secure_server_socket.dart
index 1a0bf6efbb7e478c8e93a681a547cc14c2a74769..ab88cb78f752ad5d97a5de1ef9111c80bc86c9a2 100644
--- a/dart/sdk/lib/io/secure_server_socket.dart
+++ b/dart/sdk/lib/io/secure_server_socket.dart
@@ -13,7 +13,13 @@ part of dart.io;
 class SecureServerSocket extends Stream<SecureSocket> {
   final RawSecureServerSocket _socket;
 
-  SecureServerSocket._(this._socket);
+  /**
+   * Whether the underlying socket of this [SecureServerSocket] might
+   * potentially be shared.
+   */
+  final bool shared;
+
+  SecureServerSocket._(this._socket, this.shared);
 
   /**
    * Returns a future for a [SecureServerSocket]. When the future
@@ -67,7 +73,8 @@ class SecureServerSocket extends Stream<SecureSocket> {
        bool v6Only: false,
        bool requestClientCertificate: false,
        bool requireClientCertificate: false,
-       List<String> supportedProtocols}) {
+       List<String> supportedProtocols,
+       bool shared: false}) {
     return RawSecureServerSocket.bind(
         address,
         port,
@@ -76,8 +83,9 @@ class SecureServerSocket extends Stream<SecureSocket> {
         v6Only: v6Only,
         requestClientCertificate: requestClientCertificate,
         requireClientCertificate: requireClientCertificate,
-        supportedProtocols: supportedProtocols).then(
-            (serverSocket) => new SecureServerSocket._(serverSocket));
+        supportedProtocols: supportedProtocols,
+        shared: shared).then(
+            (serverSocket) => new SecureServerSocket._(serverSocket, shared));
   }
 
   StreamSubscription<SecureSocket> listen(void onData(SecureSocket socket),
@@ -127,11 +135,18 @@ class RawSecureServerSocket extends Stream<RawSecureSocket> {
   final List<String> supportedProtocols;
   bool _closed = false;
 
+  /**
+   * Whether the underlying socket of this [RawSecureServerSocket] might
+   * potentially be shared.
+   */
+  final bool shared;
+
   RawSecureServerSocket._(RawServerSocket serverSocket,
                           this.certificateName,
                           this.requestClientCertificate,
                           this.requireClientCertificate,
-                          this.supportedProtocols) {
+                          this.supportedProtocols,
+                          this.shared) {
     _socket = serverSocket;
     _controller = new StreamController<RawSecureSocket>(
         sync: true,
@@ -192,14 +207,17 @@ class RawSecureServerSocket extends Stream<RawSecureSocket> {
        bool v6Only: false,
        bool requestClientCertificate: false,
        bool requireClientCertificate: false,
-       List<String> supportedProtocols}) {
-    return RawServerSocket.bind(address, port, backlog: backlog, v6Only: v6Only)
+       List<String> supportedProtocols,
+       bool shared: false}) {
+    return RawServerSocket.bind(
+        address, port, backlog: backlog, v6Only: v6Only, shared: shared)
         .then((serverSocket) => new RawSecureServerSocket._(
             serverSocket,
             certificateName,
             requestClientCertificate,
             requireClientCertificate,
-            supportedProtocols));
+            supportedProtocols,
+            shared));
   }
 
   StreamSubscription<RawSecureSocket> listen(void onData(RawSecureSocket s),