【转】 C++ 简单的 Tcp 实现[socket] 客户端与客户端通信

// 服务器端代码

// Server.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "winsock2.h"
#pragma comment(lib, "ws2_32.lib")

#include <iostream>
using namespace std;

int _tmain(int argc, char* argv[])
{
const int BUF_SIZE = 64;

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_SIZE];   //接收数据缓冲区
   char           sendBuf[BUF_SIZE];//返回给客户端得数据
   int               retVal;           //返回值

//初始化套结字动态库
   if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
   {
       cout << "WSAStartup failed!" << endl;
       return 1;
   }

   //创建套接字
   sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
   if(INVALID_SOCKET == sServer)
   {
       cout << "socket failed!" << endl;
       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)
   {
       cout << "bind failed!" << endl;
       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)
   {
       cout << "listen failed!" << endl;
       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)
   {
       cout << "accept failed!" << endl;
       closesocket(sServer);   //关闭套接字
       WSACleanup();           //释放套接字资源;
       return -1;
   }

while(true){
       //接收客户端数据
       ZeroMemory(buf, BUF_SIZE);
       retVal = recv(sClient, buf, BUF_SIZE, 0);
       if (SOCKET_ERROR == retVal)
       {
           cout << "recv failed!" << endl;
           closesocket(sServer);   //关闭套接字
           closesocket(sClient);   //关闭套接字
           WSACleanup();           //释放套接字资源;
           return -1;
       }
       if(buf[0] == '0')
           break;
       cout << "客户端发送的数据: " << buf <<endl;

       cout << "向客户端发送数据: " ;
       cin >> sendBuf;

       send(sClient, sendBuf, strlen(sendBuf), 0);
   }

   //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;
}

// 客户端代码

// Client.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "winsock2.h"
#include <iostream>
#pragma comment(lib, "ws2_32.lib")

using namespace std;
BOOL RecvLine(SOCKET s, char* buf); //读取一行数据

int main(int argc, char* argv[])
{
const int BUF_SIZE = 64;

WSADATA           wsd;           //WSADATA变量
   SOCKET           sHost;           //服务器套接字
   SOCKADDR_IN       servAddr;       //服务器地址
   char           buf[BUF_SIZE];   //接收数据缓冲区
   char           bufRecv[BUF_SIZE];
   int               retVal;           //返回值

   //初始化套结字动态库
   if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
   {
       cout << "WSAStartup failed!" << endl;
       return -1;
   }

   //创建套接字
   sHost = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
   if(INVALID_SOCKET == sHost)
   {
       cout << "socket failed!" << endl;
       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)
   {
       cout << "connect failed!" << endl;
       closesocket(sHost);   //关闭套接字
       WSACleanup();       //释放套接字资源
       return -1;
   }
   while(true){
       //向服务器发送数据
       ZeroMemory(buf, BUF_SIZE);
       cout << " 向服务器发送数据: ";
       cin >> buf;
       retVal = send(sHost, buf, strlen(buf), 0);
       if (SOCKET_ERROR == retVal)
       {
           cout << "send failed!" << endl;
           closesocket(sHost);   //关闭套接字
           WSACleanup();       //释放套接字资源
           return -1;
       }
       //RecvLine(sHost, bufRecv);
       recv(sHost, bufRecv,5 , 0);       // 接收服务器端的数据，只接收5个字符
       cout << endl <<"从服务器接收数据：" << bufRecv;

}
   //退出
   closesocket(sHost);   //关闭套接字
   WSACleanup();       //释放套接字资源
   return 0;
}

巴特西

【转】 C++ 简单的 Tcp 实现[socket] 客户端与客户端通信

最新文章

热门文章