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看到一个帖子， 让人生写一个简单的socket程序.

出于好奇, 试了一把.

试验结果，至少要有本地VS自带的MSDN,  才能写出socket程序~

我想, 能出这招的人，真是奇葩一朵~

// Client.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include 
   
    #pragma comment(lib, "ws2_32.lib")#include 
    
     #include "../common/constDefine.h"int _tmain(int argc, _TCHAR* argv[]){    BOOL            bRc = FALSE;    int             iRc = 0;    WSADATA         wsaData;    SOCKET          sockClt = INVALID_SOCKET;    sockaddr_in     addr;    TAG_CS_INFO     info;    ZeroMemory(&info, sizeof(TAG_CS_INFO));    iRc = WSAStartup(MAKEWORD(2, 2), &wsaData);    if (NO_ERROR != iRc)    {        _tprintf(L"WSAStartup = %d\r\n", iRc);        goto _tmain_END;    }    _tprintf(L"WSAStartup OK\r\n");    sockClt = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    if (INVALID_SOCKET == sockClt)    {        _tprintf(L"socket = INVALID_SOCKET\r\n");        goto _tmain_END;    }    _tprintf(L"socket OK\r\n");    addr.sin_family = AF_INET;    addr.sin_addr.s_addr = inet_addr(SERVER_IP);    addr.sin_port = htons(SERVER_PORT);    iRc = connect(sockClt, (sockaddr *)&addr, sizeof(sockaddr));    if (NO_ERROR != iRc)    {        _tprintf(L"connect = %d\r\n", iRc);        goto _tmain_END;    }    _tprintf(L"connect OK\r\n");    /// @todo 如果发送的内容较长, 需要考虑发送多次    iRc = send(sockClt, (const char *)&info, sizeof(TAG_CS_INFO), 0);    if (sizeof(TAG_CS_INFO) != iRc)    {        _tprintf(L"send err : %d/%d\r\n", iRc, sizeof(TAG_CS_INFO));        goto _tmain_END;    }    _tprintf(L"send OK\r\n");    /// @todo 如果接收内容较长, 需要考虑接收多次，直到接收完全    iRc = recv(sockClt, (char *)&info, sizeof(TAG_CS_INFO), 0);    if (sizeof(TAG_CS_INFO) != iRc)    {        _tprintf(L"recv err : %d/%d\r\n", iRc, sizeof(TAG_CS_INFO));        goto _tmain_END;    }    _tprintf(L"recv OK\r\n");    bRc = MakeAnswer(info.nFrame, info.dwInClient, info.dwOutServer);    _tprintf(L"IsAnswerOK = %s\r\n", bRc ? L"TRUE" : L"FALSE");_tmain_END:    if (INVALID_SOCKET != sockClt)        closesocket(sockClt);    WSACleanup();    _tprintf(L"END, press any key to quit\r\n");    getwchar();	return 0;}
    
   

// server.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include 
   
    #pragma comment(lib, "ws2_32.lib")#include 
    
     #include "../common/constDefine.h"int _tmain(int argc, _TCHAR* argv[]){    int         iRc = 0;    WSADATA     wsaData;    SOCKET      sockSrv = INVALID_SOCKET;    SOCKET      sockTmp = INVALID_SOCKET;    sockaddr_in addr;    int         iLenAddr = 0;    TAG_CS_INFO info;    iRc = WSAStartup(MAKEWORD(2, 2), &wsaData);    if (NO_ERROR != iRc)    {        _tprintf(L"WSAStartup err\r\n");        goto _tmain_END;    }    sockSrv = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    if (INVALID_SOCKET == sockSrv)    {        _tprintf(L"INVALIDE_SOCKET == socket\r\n");        goto _tmain_END;    }    addr.sin_addr.s_addr = inet_addr(SERVER_IP);    addr.sin_family = AF_INET;    addr.sin_port = htons(SERVER_PORT);    iRc = bind(sockSrv, (sockaddr *)&addr, sizeof(sockaddr_in));    if (NO_ERROR != iRc)    {        _tprintf(L"bind err\r\n");        goto _tmain_END;    }    iRc = listen(sockSrv, SOMAXCONN);    if (NO_ERROR != iRc)    {        _tprintf(L"listen err\r\n");        goto _tmain_END;    }    while (1)    {        ZeroMemory(&info, sizeof(TAG_CS_INFO));        _tprintf(L"accept ...\r\n");        sockTmp = accept(sockSrv, NULL, NULL);        if (INVALID_SOCKET == sockTmp)        {            _tprintf(L"INVALID_SOCKET == sockTmp\r\n");            continue;        }        _tprintf(L"accept OK\r\n");        /// @todo 需要考虑一次没收完的情况        iRc = recv(sockTmp, (char *)&info, sizeof(TAG_CS_INFO), 0);        if (sizeof(TAG_CS_INFO) != iRc)        {            _tprintf(L"recv err : %d/%d\r\n", iRc, sizeof(TAG_CS_INFO));            continue;        }        _tprintf(L"recv OK\r\n");        /// 回答客户端        MakeAnswer(info.nFrame, info.dwInClient, info.dwOutServer);        /// @todo 需要考虑数据没发完的情况        iRc = send(sockTmp, (char *)&info, sizeof(TAG_CS_INFO), 0);        if (sizeof(TAG_CS_INFO) != iRc)        {            _tprintf(L"send err : %d/%d\r\n", iRc, sizeof(TAG_CS_INFO));            continue;        }        _tprintf(L"answer OK\r\n");    }_tmain_END:    if (INVALID_SOCKET != sockSrv)        closesocket(sockSrv);     WSACleanup();     getwchar();     return 0;}
    
   

/// @file       constDefine.h/// @brief      常量定义#ifndef __CONST_DEFINE_H__#define __CONST_DEFINE_H__#define SERVER_IP   "127.0.0.1"#define SERVER_PORT 51000#pragma pack(1)/// 模拟C/S问答的结构typedef struct  _tag_csInfo{    size_t  nFrame;         ///< 通讯祯号    DWORD   dwInClient;     ///< 客户端给出的数字    DWORD   dwOutServer;    ///< 服务器端根据dwInClient给出的数字}TAG_CS_INFO;#pragma pack()/// 客户端判断服务器回答是否正确BOOL IsAnswerOK(DWORD dwInClient, DWORD dwOutServer){    return ((dwInClient + 1) == dwOutServer);}/// 服务器段做答案BOOL MakeAnswer(size_t & nFrame, DWORD &dwInClient, DWORD &dwOutServer){    nFrame++;    dwOutServer = dwInClient + 1;    return TRUE;}                 #endif // #ifndef __CONST_DEFINE_H__

/// run result : serveraccept ...accept OKrecv OKanswer OKaccept ...

/// run result : clientWSAStartup OKsocket OKconnect OKsend OKrecv OKIsAnswerOK = TRUEEND, press any key to quit

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