关于asio socket客户端指定某个端口连接服务器的问题

gimy007 2011-07-04 05:53:36

我想client在连接服务器时，指定某个特定的端口，要怎么写?

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gimy007 2011-07-05

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揣一个~~~

gimy007 2011-07-05

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顶上去~~~

gimy007 2011-07-05

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恩，可能我的表达没清楚；

服务端的端口是确定的，客户端会随机分配一个端口与服务端端口建立SCOKET连接；

现在的问题是由于防火墙，我客户端的端口只能是某个特定的端口与服务器建立连接。

这是代码

-----------------------------
boost::asio::io_service io_service;
tcp::resolver resolver(io_service);
tcp::resolver::query query(sIP.c_str(), sPort.c_str());
tcp::resolver::iterator endpoint = resolver.resolve(query);
boost::system::error_code error = boost::asio::error::host_not_found;
sock = new tcp::socket(io_service);
sock->connect(*endpoint, error);
-----------------------------------

野男孩 2011-07-04

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//

// blocking_tcp_echo_client.cpp

// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//

// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)

//

// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

//



#include <cstdlib>

#include <cstring>

#include <iostream>

#include <boost/asio.hpp>



using boost::asio::ip::tcp;



enum { max_length = 1024 };



int main(int argc, char* argv[])

{

  try

  {

    if (argc != 3)

    {

      std::cerr << "Usage: blocking_tcp_echo_client <host> <port>\n";

      return 1;

    }



    boost::asio::io_service io_service;



    tcp::resolver resolver(io_service);

    tcp::resolver::query query(tcp::v4(), argv[1], argv[2]);

    tcp::resolver::iterator iterator = resolver.resolve(query);



    tcp::socket s(io_service);

    s.connect(*iterator);



    using namespace std; // For strlen.

    std::cout << "Enter message: ";

    char request[max_length];

    std::cin.getline(request, max_length);

    size_t request_length = strlen(request);

    boost::asio::write(s, boost::asio::buffer(request, request_length));



    char reply[max_length];

    size_t reply_length = boost::asio::read(s,

        boost::asio::buffer(reply, request_length));

    std::cout << "Reply is: ";

    std::cout.write(reply, reply_length);

    std::cout << "\n";

  }

  catch (std::exception& e)

  {

    std::cerr << "Exception: " << e.what() << "\n";

  }



  return 0;

}