新手上路，正在慢慢学习
//server
#include <WinSock2.h>
#include <stdio.h>
int main()
{
// 加载套接字库
WORD
wVersionRequested;
WSADATA
wsaData;
int err;
wVersionRequested
= MAKEWORD(1, 1);
err =
WSAStartup(wVersionRequested, &wsaData);
if (err != 0)
return
0;
if
(LOBYTE(wsaData.wVersion) != 1 ||
HIBYTE(wsaData.wVersion)
!= 1)
{
WSACleanup();
return
0;
}
// 创建用于监听的套接字
SOCKET
sockSrv = socket(AF_INET, SOCK_STREAM, 0);
SOCKADDR_IN
addrSrv;
addrSrv.sin_addr.S_un.S_addr
= htonl(INADDR_ANY);
addrSrv.sin_family
= AF_INET;
addrSrv.sin_port
= htons(6000);
// 绑定套接字
bind(sockSrv,
(SOCKADDR*)&addrSrv, sizeof(SOCKADDR));
// 将套接字设为监听模式，准备接收客户请求
listen(sockSrv,
5);
SOCKADDR_IN
addrClient;
int len =
sizeof(SOCKADDR);
while (1)
{
// 等待客户请求到来
SOCKET
sockConn = accept(sockSrv, (SOCKADDR*)&addrClient, &len);
char
sendBuf[100];
inet_ntoa(addrClient.sin_addr));
// 发送数据
send(sockConn,
sendBuf, strlen(sendBuf)+1, 0);
char
recvBuf[100];
// 接收数据
recv(sockConn,
recvBuf, 100, 0);
// 打印接收到的数据
printf("%s\n",recvBuf);
// 关闭套接字
closesocket(sockConn);
}
return 0;
}
//client
#include <WinSock2.h>
#include <stdio.h>
void main()
{
// 加载套接字
WORD
wVersionRequested;
WSADATA
wsaData;
int err;
wVersionRequested
= MAKEWORD(1,1);
err =
WSAStartup(wVersionRequested, &wsaData);
if (err !=0 )
return;
if (LOBYTE(wsaData.wVersion
) !=1 ||
HIBYTE(wsaData.wVersion
) !=1 )
{
WSACleanup();
return;
}
// 创建套接字
SOCKET
sockClient = socket(AF_INET, SOCK_STREAM,0);
SOCKADDR_IN
addrSrv;
addrSrv.sin_addr.S_un.S_addr
= inet_addr("127.0.0.1");
addrSrv.sin_family
= AF_INET;
addrSrv.sin_port
= htons(6000);
// 向服务器发出链接请求
connect(sockClient,
(SOCKADDR*)&addrSrv, sizeof(SOCKADDR));
// 接收数据
char
recvBuf[100];
recv(sockClient,
recvBuf, 100, 0);
printf_s("%s\n",
recvBuf);
// 发送数据
send(sockClient,
"This is a command", strlen("This is a command ")+1, 0);
// 关闭套接字
closesocket(sockClient);
WSACleanup();
return;
} 
