TCP 客户端编程问题

来源：百度知道 编辑：UC知道 时间：2024/05/18 06:44:11
我要写个TCP client程序，要求给服务端发送数据之后接收服务端返回数据，应该怎么写

client.cpp

#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
void main() {

// 初始化 Winsock.
WSADATA wsaData;
int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
printf("Error at WSAStartup()\n");

// 建立socket socket.
SOCKET client;
client = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );

if ( client == INVALID_SOCKET ) {
printf( "Error at socket(): %ld\n", WSAGetLastError() );
WSACleanup();
return;
}

// 连接到服务器.
sockaddr_in clientService;

clientService.sin_family = AF_INET;
clientService.sin_addr.s_addr = inet_addr( "127.0.0.1" );
clientService.sin_port = htons( 27015 );

if ( connect( client, (SOCKADDR*) &clientService, sizeof(clien