Self-encapsulated socket class-socket_zmy

The function is simple and supports sending and receiving. Suitable for beginners.

Socket_zmy.h

#pragma once#define _AFXDLL#include "afxsock.h"#include "afxwin.h"class Socket_Zmy{public:Socket_Zmy(void);~Socket_Zmy(void);int SendData(CString IP, int Port, void * Data,int DataLen);int RecvData(int Port, char * Data, int DataLen);};

Socket_zmy.cpp

#include "Socket_Zmy.h"Socket_Zmy::Socket_Zmy(void){if (!AfxSocketInit()){AfxMessageBox("AfxSocketInit() Failed");}}Socket_Zmy::~Socket_Zmy(void){}int Socket_Zmy::SendData(CString IP, int Port, void * Data,int DataLen){SOCKET Socket = ::socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(Socket == INVALID_SOCKET){AfxMessageBox("::socket() Failed");}sockaddr_in servAddr; servAddr.sin_family = AF_INET;servAddr.sin_port = htons(Port);servAddr.sin_addr.S_un.S_addr = inet_addr(IP);if(::connect(Socket,(sockaddr*)&servAddr, sizeof(servAddr)) == -1){AfxMessageBox("::connect() Failed");return 0;}int len = ::send(Socket,(const char *)Data,DataLen,0);::closesocket(Socket);return len;}int Socket_Zmy::RecvData(int Port, char * Data, int DataLen){SOCKET sListen = ::socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(sListen == INVALID_SOCKET){AfxMessageBox("::socket() Failed");return 0;}sockaddr_in sin;sin.sin_family = AF_INET;sin.sin_port = htons(Port);sin.sin_addr.S_un.S_addr = INADDR_ANY;if(::bind(sListen,(LPSOCKADDR)&sin,sizeof(sin)) == SOCKET_ERROR){AfxMessageBox("::bind() Failed");return 0;}if(::listen(sListen, 2) == SOCKET_ERROR){AfxMessageBox("::listen() Failed");return 0;}sockaddr_in remoteAddr; int nAddrLen = sizeof(remoteAddr);SOCKET sClient = 0;while(sClient == 0){sClient = ::accept(sListen,(SOCKADDR*)&remoteAddr, &nAddrLen);if(sClient == INVALID_SOCKET){AfxMessageBox("::accept() Failed");}continue;}int nRecv = ::recv(sClient,Data,DataLen,0);if(nRecv > 0){Data[nRecv] = '\0';}::closesocket(sClient);::closesocket(sListen);return 0;}