Set SO_LINGER on sockets on windows.

runtime/bin/eventhandler_win.cc

 // Copyright (c) 2012, 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/eventhandler.h"
 
 #include <process.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <mswsock.h>
@@ skipping 376 matching lines @@
 void ListenSocket::AcceptComplete(IOBuffer* buffer, HANDLE completion_port) {
   ScopedLock lock(this);
   if (!IsClosing()) {
     // Update the accepted socket to support the full range of API calls.
     SOCKET s = socket();
     int rc = setsockopt(buffer->client(),
                         SOL_SOCKET,
                         SO_UPDATE_ACCEPT_CONTEXT,
                         reinterpret_cast<char*>(&s), sizeof(s));
     if (rc == NO_ERROR) {
+      linger l;
+      l.l_onoff = 1;
+      l.l_linger = 10;
+      int status = setsockopt(buffer->client(),
+                              SOL_SOCKET,
+                              SO_LINGER,
+                              reinterpret_cast<char*>(&l),
+                              sizeof(l));
+      if (status != NO_ERROR) {
+        FATAL("Failed setting SO_LINGER on socket");
+      }
       // Insert the accepted socket into the list.
       ClientSocket* client_socket = new ClientSocket(buffer->client(), 0);
       client_socket->CreateCompletionPort(completion_port);
       if (accepted_head_ == NULL) {
         accepted_head_ = client_socket;
         accepted_tail_ = client_socket;
       } else {
         ASSERT(accepted_tail_ != NULL);
         accepted_tail_->set_next(client_socket);
         accepted_tail_ = client_socket;
@@ skipping 479 matching lines @@
                                    reinterpret_cast<uword>(this));
   if (result != 0) {
     FATAL1("Failed to start event handler thread %d", result);
   }
 
   // Initialize Winsock32
   if (!Socket::Initialize()) {
     FATAL("Failed to initialized Windows sockets");
   }
 }