Add reusePort argument to ServerSocket.

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/socket.h"
 #include "bin/dartutils.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
@@ skipping 284 matching lines @@
 
 
 void FUNCTION_NAME(ServerSocket_CreateBindListen)(Dart_NativeArguments args) {
   Dart_Handle socket_obj = Dart_GetNativeArgument(args, 0);
   Dart_Handle host_obj = Dart_GetNativeArgument(args, 1);
   RawAddr addr;
   Dart_Handle result = GetSockAddr(host_obj, &addr);
   Dart_Handle port_obj = Dart_GetNativeArgument(args, 2);
   Dart_Handle backlog_obj = Dart_GetNativeArgument(args, 3);
   Dart_Handle v6_only_obj = Dart_GetNativeArgument(args, 4);
+  Dart_Handle reuse_port_obj = Dart_GetNativeArgument(args, 5);
   bool v6_only = DartUtils::GetBooleanValue(v6_only_obj);
+  bool reuse_port = DartUtils::GetBooleanValue(reuse_port_obj);
   int64_t port = 0;
   int64_t backlog = 0;
   if (!Dart_IsError(result) &&
       DartUtils::GetInt64Value(port_obj, &port) &&
       DartUtils::GetInt64Value(backlog_obj, &backlog)) {
     intptr_t socket = ServerSocket::CreateBindListen(
-        addr, port, backlog, v6_only);
+        addr, port, backlog, v6_only, reuse_port);
     OSError error;
     Dart_TypedDataReleaseData(host_obj);
     if (socket >= 0) {
       Dart_Handle err = Socket::SetSocketIdNativeField(socket_obj, socket);
       if (Dart_IsError(err)) Dart_PropagateError(err);
       Dart_SetReturnValue(args, Dart_True());
     } else {
       if (socket == -5) {
         OSError os_error(-1, "Invalid host", OSError::kUnknown);
         Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
@@ skipping 182 matching lines @@
   return Dart_SetNativeInstanceField(socket, kSocketIdNativeField, id);
 }
 
 
 Dart_Handle Socket::GetSocketIdNativeField(Dart_Handle socket, intptr_t* id) {
   return Dart_GetNativeInstanceField(socket, kSocketIdNativeField, id);
 }
 
 }  // namespace bin
 }  // namespace dart