C++ Socket服务器简单代码示例

#include <WinSock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")//服务器端
void main()
{   WSADATA wsaData;    int errorCode = WSAStartup(MAKEWORD(1,1),&wsaData);if (errorCode != 0)return;SOCKET acceptSocket = socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN addr;addr.sin_family = AF_INET;addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);addr.sin_port = htons(6001);        //端口号errorCode = bind(acceptSocket,(SOCKADDR*)&addr,sizeof(SOCKADDR));   if (errorCode != 0)return;errorCode = listen(acceptSocket,5);if (errorCode != 0)return;SOCKADDR_IN sockAddr;int len = sizeof(SOCKADDR);char recvBuf[5000] = {0};char sendBuf[5000] = {0};while (true){SOCKET clientSocket = accept(acceptSocket,(SOCKADDR*)&sockAddr,&len);if (clientSocket == INVALID_SOCKET){Sleep(100);continue;}memset(sendBuf,0,5000);sprintf(sendBuf,"%s is Connected!\r\n",inet_ntoa(sockAddr.sin_addr));printf(sendBuf);while(true){memset(recvBuf,0,5000);memset(sendBuf,0,5000);int ret = recv(clientSocket,recvBuf, 4999,0);if (ret < 0)break;      sprintf(sendBuf,"Hello %s ,message recved!\r\n",inet_ntoa(sockAddr.sin_addr));printf(sendBuf);ret = send(clientSocket,sendBuf, strlen(sendBuf),0);if (ret < 0)break;  }memset(sendBuf,0,5000);sprintf(sendBuf,"%s is Closed!\r\n",inet_ntoa(sockAddr.sin_addr));printf(sendBuf);closesocket(clientSocket);}closesocket(acceptSocket);WSACleanup();
}