Add support to specify the source address for socket connect

runtime/bin/socket.h

 // 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.
 
 #ifndef BIN_SOCKET_H_
 #define BIN_SOCKET_H_
 
 #include "platform/globals.h"
 
 #include "bin/builtin.h"
@@ skipping 209 matching lines @@
   };
 
   static bool Initialize();
   static intptr_t Available(intptr_t fd);
   static intptr_t Read(intptr_t fd, void* buffer, intptr_t num_bytes);
   static intptr_t Write(intptr_t fd, const void* buffer, intptr_t num_bytes);
   static intptr_t SendTo(
       intptr_t fd, const void* buffer, intptr_t num_bytes, RawAddr addr);
   static intptr_t RecvFrom(
       intptr_t fd, void* buffer, intptr_t num_bytes, RawAddr* addr);
-  static intptr_t Create(RawAddr addr);
-  static intptr_t Connect(intptr_t fd, RawAddr addr, const intptr_t port);
-  static intptr_t CreateConnect(RawAddr addr,
+  static intptr_t CreateConnect(const RawAddr& addr,
                                 const intptr_t port);
+  static intptr_t CreateBindConnect(const RawAddr& addr,
+                                    const intptr_t port,
+                                    const RawAddr& source_addr);
   static intptr_t CreateBindDatagram(
       RawAddr* addr, intptr_t port, bool reuseAddress);
   static intptr_t GetPort(intptr_t fd);
   static SocketAddress* GetRemotePeer(intptr_t fd, intptr_t* port);
   static void GetError(intptr_t fd, OSError* os_error);
   static int GetType(intptr_t fd);
   static intptr_t GetStdioHandle(intptr_t num);
   static void Close(intptr_t fd);
   static bool GetNoDelay(intptr_t fd, bool* enabled);
   static bool SetNoDelay(intptr_t fd, bool enabled);
@@ skipping 63 matching lines @@
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(ServerSocket);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SOCKET_H_