最基本socket网络通信

//头文件  

#pragma once

#include <Winsock2.h>

#pragma comment(lib, "ws2_32.lib")

class CBaseSocket

{

protected:
SOCKET m_socket;

public:
CBaseSocket();
~CBaseSocket();
BOOL InitSocket(int hVer=1, int lVer=1);
BOOL CreateClientSocket(char *pAddr="127.0.0.1", UINT nPort=6000);
BOOL SendSocketData(char *pBuff, int nLen);
BOOL RecvSocketData(char *pBuff, int nLen);
void CloseSocket();

};

//CPP文件

#include "stdafx.h"

#include "BaseSocket.h"

CBaseSocket::CBaseSocket()

{

}

CBaseSocket::~CBaseSocket()

{

}

BOOL CBaseSocket::InitSocket(int hVer, int lVer)

{
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(hVer, lVer);
if (WSAStartup(wVersionRequested, &wsaData))
{
AfxMessageBox(_T("初始化失败!"));
return FALSE;
}
if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1)
{
WSACleanup();
AfxMessageBox(_T("初始化失败!"));
return FALSE;
}

return TRUE;

}

BOOL CBaseSocket::CreateClientSocket(char *pAddr, UINT nPort)

{
m_socket = socket(AF_INET, SOCK_STREAM, 0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr = inet_addr(pAddr);
addrSrv.sin_family = AF_INET;
addrSrv.sin_port = htons(nPort);
if (0 != connect(m_socket, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)))
{
AfxMessageBox(_T("连接失败!"));
return FALSE;
}

return TRUE;

}

BOOL CBaseSocket::SendSocketData(char *pBuff, int nLen)

{
if (SOCKET_ERROR == send(m_socket, pBuff, nLen, 0))
{
AfxMessageBox(_T("数据发送失败!"));
return FALSE;
}
return TRUE;

}

void CBaseSocket::CloseSocket()

{
closesocket(m_socket);
WSACleanup();

}

BOOL CBaseSocket::RecvSocketData(char *pBuff, int nLen)

{
if (0 != recv(m_socket, pBuff, nLen, 0))
{
AfxMessageBox(_T("数据接受失败!"));
return FALSE;
}
return TRUE;

}