C ++ Boost.ASIO:使用Windows API(同时使用Linux API)将接受的TCP连接从一个打开的套接字传递到另一个?

C++ Boost.ASIO: passing accepted TCP connection from one opened socket to another using Windows APIs ( while works with Linux APIs)?(C ++ Boost.ASIO:使用Windows API(同时使用Linux API)将接受的TCP连接从一个打开的套接字传递到另一个?)

问题描述

我试图学习如何使用 Boost.ASIO 和 Windows API 重新分配接受的连接.发现 此代码示例 添加到其中包括和使用命名空间，所以现在是可编译 - 只需复制并粘贴即可...参数不正确"异常在同一个地方代码海报有它=(所以这里是代码:

I was trying to learn how to re assign accepted connection using Boost.ASIO and Windows API's. found this code sample added to it includes and use of namespaces so now it is compilable - just copy and paste and here you go... "The parameter is incorrect" exception at the same place code poster had it=( So here is code:

#include <iostream>
#include <boost/asio.hpp>

#ifdef _WIN32
#include "Windows.h"
#endif

using namespace boost::asio::ip;
using namespace std;

int main(){
int m_nPort = 12345;
boost::asio::io_service io_service;
tcp::acceptor acceptor(io_service, tcp::endpoint(tcp::v4(), m_nPort));

cout << "Waiting for connection..." << endl;

tcp::socket socket(io_service);
acceptor.accept(socket);
cout << "connection accepted" << endl;

#ifdef _WIN32
WSAPROTOCOL_INFO pi;
WSADuplicateSocket(socket.native(), GetCurrentProcessId(), &pi);
SOCKET socketDup = WSASocket(pi.iAddressFamily/*AF_INET*/, pi.iSocketType/*SOCK_STREAM*/,
                             pi.iProtocol/*IPPROTO_TCP*/, &pi, 0, 0);
char sText[] = "I can use my duplicated socket via WinApi!
";
int nRet = send(socketDup, sText, strlen(sText), 0);
#else
//linux
 int socketDup = dup(socket.native()); // tested on Linux, works!
#endif

try
{
    tcp::socket s(io_service);
    s.assign(tcp::v4(), socketDup); //this throws exception under Windows
    //I can't use my socket via boost lib
    s.send(boost::asio::buffer("Not work
"));
    cout << "We do not get here!=(" << endl;
}
catch(exception &e)
{
    cerr << e.what() << endl; //"The parameter is incorrect" exception
}
cin.get();
}

一般代码遵循这篇文章，我实际上没有看到什么是错误的，如何解决它也是错误的.

In general code follows this post and I actually do not see what is wrong neither how to fix it.

它遵循我们将接受的 TCP 连接从一个进程传递到另一个进程的方式(此处描述)

And it follows way how we would pass accepted TCP connection from one process to another (described here)

可能是这个不同Windows平台上的Socket继承"示例可能会有所帮助，但我不知道如何.

May be this "Socket inheritance on different Windows platforms" example could help but I do not see how.

谁能帮我找到解决这个问题的任何可能的方法?

Can any one please help me to find any possible workaround that problem?

更新:刚刚在 Linux 上测试过的代码 - 完美运行，没有错误.

Update: Just tested code on Linux - works perfectly, no errors.

那么windows版本是什么?

So what is it with windows version?

推荐答案

尝试使用 WSASocket 文档附带的代码片段:

socketDup = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, &pi, 0, WSA_FLAG_OVERLAPPED);

#define BOOST_ASIO_DISABLE_IOCP 1

Waiting for connection...
connection accepted
We do not get here!=(

I can use my duplicated socket via WinApi!
Not work