Add support to specify the source address for socket connect

runtime/bin/socket.cc

 // 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.
 
 #include "bin/io_buffer.h"
 #include "bin/isolate_data.h"
 #include "bin/dartutils.h"
 #include "bin/socket.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
@@ skipping 39 matching lines @@
   OSError error;
   if (socket >= 0) {
     Socket::SetSocketIdNativeField(Dart_GetNativeArgument(args, 0), socket);
     Dart_SetReturnValue(args, Dart_True());
   } else {
     Dart_SetReturnValue(args, DartUtils::NewDartOSError(&error));
   }
 }
 
 
+void FUNCTION_NAME(Socket_CreateBindConnect)(Dart_NativeArguments args) {
+  RawAddr addr;
+  SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 1), &addr);
+  Dart_Handle port_arg = Dart_GetNativeArgument(args, 2);
+  int64_t port = DartUtils::GetInt64ValueCheckRange(port_arg, 0, 65535);
+  RawAddr sourceAddr;
+  SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 3), &sourceAddr);
+  intptr_t socket = Socket::CreateBindConnect(
+      addr, static_cast<intptr_t>(port), sourceAddr);
+  OSError error;
+  if (socket >= 0) {
+    Socket::SetSocketIdNativeField(Dart_GetNativeArgument(args, 0), socket);
+    Dart_SetReturnValue(args, Dart_True());
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError(&error));
+  }
+}
+
+
 void FUNCTION_NAME(Socket_CreateBindDatagram)(Dart_NativeArguments args) {
   RawAddr addr;
   SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 1), &addr);
   Dart_Handle port_arg = Dart_GetNativeArgument(args, 2);
   int64_t port = DartUtils::GetInt64ValueCheckRange(port_arg, 0, 65535);
   bool reuse_addr = DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 3));
   intptr_t socket = Socket::CreateBindDatagram(&addr,
                                                static_cast<intptr_t>(port),
                                                reuse_addr);
   if (socket >= 0) {
@@ skipping 618 matching lines @@
 intptr_t Socket::GetSocketIdNativeField(Dart_Handle socket_obj) {
   intptr_t socket = 0;
   Dart_Handle err =
       Dart_GetNativeInstanceField(socket_obj, kSocketIdNativeField, &socket);
   if (Dart_IsError(err)) Dart_PropagateError(err);
   return socket;
 }
 
 }  // namespace bin
 }  // namespace dart