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一个VC++ TCP服务测试代码

  • 时间:2018-02-06
  • 简述:TCP

一个VC++ TCP服务测试代码,包括了客户端和服务端代码:

#include "stdafx.h"
#define  BUF_SZIE	 64
#include "winsock2.h"
#pragma comment(lib, "ws2_32.lib")
int main(int argc, char* argv[])
{
WSADATA			wsd;//WSADATA变量
SOCKET			sServer;	//服务器套接字
SOCKET			sClient;	//客户端套接字
SOCKADDR_IN		addrServ;;//服务器地址
char			buf[BUF_SZIE];//接收数据缓冲区
int			retVal;//返回值
//初始化套结字动态库
if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
{
	printf("WSAStartup failed!\n");
	return 1;
}
//创建套接字
sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(INVALID_SOCKET == sServer)
{
	printf("socket failed!\n");
	WSACleanup();//释放套接字资源;
	return  -1;
}
//服务器套接字地址
addrServ.sin_family = AF_INET;
addrServ.sin_port = htons(4999);
addrServ.sin_addr.s_addr = INADDR_ANY;
//绑定套接字
retVal = bind(sServer, (LPSOCKADDR)&addrServ, sizeof(SOCKADDR_IN));
if(SOCKET_ERROR == retVal)
{
	printf("bind failed!\n");
	closesocket(sServer);//关闭套接字
	WSACleanup();//释放套接字资源;
	return -1;
}
//开始监听
retVal = listen(sServer, 1);
if(SOCKET_ERROR == retVal)
{
	printf("listen failed!\n");
	closesocket(sServer);//关闭套接字
	WSACleanup();//释放套接字资源;
	return -1;
}
//接受客户端请求
sockaddr_in addrClient;
int addrClientlen = sizeof(addrClient);
sClient = accept(sServer,(sockaddr FAR*)&addrClient, &addrClientlen);
if(INVALID_SOCKET == sClient)
{
	printf("accept failed!\n");
	closesocket(sServer);//关闭套接字
	WSACleanup();//释放套接字资源;
	return -1;
}
//接收客户端数据
ZeroMemory(buf, BUF_SZIE);
retVal = recv(sClient, buf, BUF_SZIE, 0);
if (SOCKET_ERROR == retVal)
{
	printf("recv failed!\n");
	closesocket(sServer);//关闭套接字
	closesocket(sClient);//关闭套接字
	WSACleanup();//释放套接字资源;
	return -1;
}
printf("%s\n", buf);//输出"MyTCP"
//退出
closesocket(sServer);//关闭套接字
closesocket(sClient);//关闭套接字
WSACleanup();//释放套接字资源;
return 0;
}

以下为客户端代码:

#include "stdafx.h"
#define	BUF_SZIE	64
#include "winsock2.h"
#pragma comment(lib, "ws2_32.lib")
int main(int argc, char* argv[])
{
	WSADATA			wsd;//WSADATA变量
	SOCKET			sHost;//服务器套接字
	SOCKADDR_IN		servAddr;//服务器地址
	char			buf[BUF_SZIE];//接收数据缓冲区
	int				retVal;//返回值
	//初始化套结字动态库
	if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
	{
		printf("WSAStartup failed!\n");
		return -1;
	}
	//创建套接字
	sHost = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
	if(INVALID_SOCKET == sHost)
	{
		printf("socket failed!\n");
		WSACleanup();//释放套接字资源
		return  -1;
	}
	//设置服务器地址
	servAddr.sin_family =AF_INET;
	servAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
	servAddr.sin_port = htons((short)4999);
	int	nServAddlen  = sizeof(servAddr);
	//连接服务器
	retVal=connect(sHost,(LPSOCKADDR)&servAddr, sizeof(servAddr));
	if(SOCKET_ERROR == retVal)
	{
		printf("connect failed!\n");
		closesocket(sHost);	//关闭套接字
		WSACleanup();//释放套接字资源
		return -1;
	}
	//向服务器发送数据
	ZeroMemory(buf, BUF_SZIE);
	strcpy(buf, "MyTCP");
	retVal = send(sHost, buf, strlen(buf), 0);
	if (SOCKET_ERROR == retVal)
	{
		printf("send failed!\n");
		closesocket(sHost);	//关闭套接字
		WSACleanup();//释放套接字资源
		return -1;
	}
	//退出
	closesocket(sHost);	//关闭套接字
	WSACleanup();//释放套接字资源
	return 0;
}

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