#include <WinSock2.h>
#include <stdio.h>
#include <stdlib.h>
#pragma comment(lib, "ws2_32.lib")
void main()
{
WSADATA wsaData;
int port = 5099;
char buf[] = "Server: hello, I am a server.....";
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
printf("Failed to load Winsock");
return;
}
//创建用于监听的套接字
SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0);
SOCKADDR_IN addrSrv;
addrSrv.sin_family = AF_INET;
addrSrv.sin_port = htons(port); //1024以上的端口号
addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
int retVal = bind(sockSrv, (LPSOCKADDR)&addrSrv, sizeof(SOCKADDR_IN));
if (retVal == SOCKET_ERROR) {
printf("Failed bind:%d\n", WSAGetLastError());
return;
}
if (listen(sockSrv, 10) == SOCKET_ERROR) {
printf("Listen failed:%d", WSAGetLastError());
return;
}
SOCKADDR_IN addrClient;
int len = sizeof(SOCKADDR);
while (1)
{
//等待客户请求到来
SOCKET sockConn = accept(sockSrv, (SOCKADDR *)&addrClient, &len);
if (sockConn == SOCKET_ERROR) {
printf("Accept failed:%d", WSAGetLastError());
break;
}
printf("Accept failed:%d");
// printf("Accept client IP:[%s]\n", inet_ntoa(addrClient.sin_addr));
//发送数据
int iSend = send(sockConn, buf, sizeof(buf), 0);
if (iSend == SOCKET_ERROR) {
printf("send failed");
break;
}
char recvBuf[100];
memset(recvBuf, 0, sizeof(recvBuf));
// //接收数据
recv(sockConn, recvBuf, sizeof(recvBuf), 0);
printf("%s\n", recvBuf);
closesocket(sockConn);
}
closesocket(sockSrv);
WSACleanup();
system("pause");
}
客户端
#include <WinSock2.h> #include <stdio.h> #pragma comment(lib, "ws2_32.lib") void main(){ //加载套接字 WSADATA wsaData; char buff[1024]; memset(buff, 0, sizeof(buff)); if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) { printf("Failed to load Winsock"); return; } SOCKADDR_IN addrSrv; addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(5099); addrSrv.sin_addr.S_un.S_addr = inet_addr("127.0.0.1"); //创建套接字 SOCKET sockClient = socket(AF_INET, SOCK_STREAM, 0); if (SOCKET_ERROR == sockClient) { printf("Socket() error:%d", WSAGetLastError()); return; } //向服务器发出连接请求 if (connect(sockClient, (struct sockaddr*)&addrSrv, sizeof(addrSrv)) == INVALID_SOCKET) { printf("Connect failed:%d", WSAGetLastError()); return; } else { //接收数据 recv(sockClient, buff, sizeof(buff), 0); printf("%s\n", buff); } //发送数据 char* buff2 = "hello, this is a Client...."; send(sockClient, buff, sizeof(buff2), 0); //关闭套接字 closesocket(sockClient); WSACleanup(); getchar();}
