Allow server sockets to rebind to same port if there is nothing actively listening on that port.

net/socket/tcp_server_socket_win.h

Index: net/socket/tcp_server_socket_win.h
diff --git a/net/socket/tcp_server_socket_win.h b/net/socket/tcp_server_socket_win.h
index a7ab78cd4e9dc51c7dc399675722d2189f31a6fe..ff78c0f4ab08f3549409db70a3852c625eb9e38a 100644
--- a/net/socket/tcp_server_socket_win.h
+++ b/net/socket/tcp_server_socket_win.h
@@ -37,13 +37,30 @@ class NET_EXPORT_PRIVATE TCPServerSocketWin
   // base::ObjectWatcher::Delegate implementation.
   virtual void OnObjectSignaled(HANDLE object);
 
+  // Sets corresponding flags in |socket_options_| to allow the socket
+  // to share the local address to which the socket will be bound with
+  // other processes. Should be called before Bind().
+  void AllowAddressReuse();
+
  private:
   int AcceptInternal(scoped_ptr<StreamSocket>* socket);
   void Close();
 
+  enum SocketOptions {
+    SOCKET_OPTION_REUSE_ADDRESS = 1 << 0,
+  }

[Sergey Ulanov, 2012/09/12 19:38:24]

I think you are missing semicolon here

[justinlin, 2012/09/12 21:11:00]

Ack

+
+  // Applies |socket_options_| to |socket_|. Should be called before
+  // Bind().
+  int SetSocketOptions();
+
   SOCKET socket_;
   HANDLE socket_event_;
 
+  // Bitwise-or'd combination of SocketOptions. Specifies the set of
+  // options that should be applied to |socket_| before Bind().
+  int socket_options_;
+
   base::win::ObjectWatcher accept_watcher_;
 
   scoped_ptr<StreamSocket>* accept_socket_;