C++ 简单的 Tcp 实现 socket 客户端与客户端通信

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开发环境  Vs 2008  新建一个 win32 console  project

//  服务器端代码

[cpp] view plain copy print ?

1. // Server.cpp : Defines the entry point for the console application.  
2. //  
3.   
4. #include "stdafx.h"  
5. #include "winsock2.h"  
6. #pragma comment(lib, "ws2_32.lib")  
7.   
8. #include <iostream>  
9. using namespace std;  
10.   
11. int _tmain(int argc, char* argv[])  
12. {  
13.     const int BUF_SIZE = 64;  
14.   
15.     WSADATA         wsd;            //WSADATA变量  
16.     SOCKET          sServer;        //服务器套接字  
17.     SOCKET          sClient;        //客户端套接字  
18.     SOCKADDR_IN     addrServ;;      //服务器地址  
19.     char            buf[BUF_SIZE];  //接收数据缓冲区  
20.     char            sendBuf[BUF_SIZE];//返回给客户端得数据  
21.     int             retVal;         //返回值  
22.   
23.     //初始化套结字动态库  
24.     if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)  
25.     {  
26.         cout << "WSAStartup failed!" << endl;  
27.         return 1;  
28.     }  
29.       
30.     //创建套接字  
31.     sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);      
32.     if(INVALID_SOCKET == sServer)  
33.     {  
34.         cout << "socket failed!" << endl;  
35.         WSACleanup();//释放套接字资源;  
36.         return  -1;  
37.     }  
38.       
39.     //服务器套接字地址   
40.     addrServ.sin_family = AF_INET;  
41.     addrServ.sin_port = htons(4999);  
42.     addrServ.sin_addr.s_addr = INADDR_ANY;        
43.     //绑定套接字  
44.     retVal = bind(sServer, (LPSOCKADDR)&addrServ, sizeof(SOCKADDR_IN));  
45.   
46.     if(SOCKET_ERROR == retVal)  
47.     {     
48.         cout << "bind failed!" << endl;  
49.         closesocket(sServer);   //关闭套接字  
50.         WSACleanup();           //释放套接字资源;  
51.         return -1;  
52.     }  
53.       
54.     //开始监听   
55.     retVal = listen(sServer, 1);  
56.     if(SOCKET_ERROR == retVal)  
57.     {  
58.         cout << "listen failed!" << endl;         
59.         closesocket(sServer);   //关闭套接字  
60.         WSACleanup();           //释放套接字资源;  
61.         return -1;  
62.     }  
63.       
64.     //接受客户端请求  
65.     sockaddr_in addrClient;  
66.     int addrClientlen = sizeof(addrClient);  
67.     sClient = accept(sServer,(sockaddr FAR*)&addrClient, &addrClientlen);  
68.     if(INVALID_SOCKET == sClient)  
69.     {  
70.         cout << "accept failed!" << endl;         
71.         closesocket(sServer);   //关闭套接字  
72.         WSACleanup();           //释放套接字资源;  
73.         return -1;  
74.     }  
75.   
76.       
77.     while(true){  
78.         //接收客户端数据  
79.         ZeroMemory(buf, BUF_SIZE);  
80.         retVal = recv(sClient, buf, BUF_SIZE, 0);  
81.         if (SOCKET_ERROR == retVal)  
82.         {  
83.             cout << "recv failed!" << endl;       
84.             closesocket(sServer);   //关闭套接字  
85.             closesocket(sClient);   //关闭套接字       
86.             WSACleanup();           //释放套接字资源;  
87.             return -1;  
88.         }  
89.         if(buf[0] == '0')  
90.             break;  
91.         cout << "客户端发送的数据: " << buf <<endl;  
92.           
93.         cout << "向客户端发送数据: " ;  
94.         cin >> sendBuf;  
95.           
96.         send(sClient, sendBuf, strlen(sendBuf), 0);  
97.     }  
98.       
99.     //退出  
100.     closesocket(sServer);   //关闭套接字  
101.     closesocket(sClient);   //关闭套接字  
102.     WSACleanup();           //释放套接字资源;  
103.   
104.       
105.     return 0;  
106. }  

// 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

[cpp] view plain copy print ?

1. // Client.cpp : Defines the entry point for the console application.  
2. //  
3.   
4. #include "stdafx.h"  
5. #include "winsock2.h"  
6. #include <iostream>  
7. #pragma comment(lib, "ws2_32.lib")  
8.   
9. using namespace std;  
10. BOOL    RecvLine(SOCKET s, char* buf);  //读取一行数据  
11.   
12. int main(int argc, char* argv[])  
13. {  
14.     const int BUF_SIZE = 64;  
15.   
16.     WSADATA         wsd;            //WSADATA变量  
17.     SOCKET          sHost;          //服务器套接字  
18.     SOCKADDR_IN     servAddr;       //服务器地址  
19.     char            buf[BUF_SIZE];  //接收数据缓冲区  
20.     char            bufRecv[BUF_SIZE];  
21.     int             retVal;         //返回值  
22.       
23.     //初始化套结字动态库  
24.     if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)  
25.     {  
26.         cout << "WSAStartup failed!" << endl;  
27.         return -1;  
28.     }  
29.       
30.     //创建套接字  
31.     sHost = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    
32.     if(INVALID_SOCKET == sHost)  
33.     {  
34.         cout << "socket failed!" << endl;  
35.         WSACleanup();//释放套接字资源  
36.         return  -1;  
37.     }  
38.   
39.     //设置服务器地址  
40.     servAddr.sin_family =AF_INET;  
41.     servAddr.sin_addr.s_addr = inet_addr("127.0.0.1");  
42.     servAddr.sin_port = htons((short)4999);  
43.     int nServAddlen  = sizeof(servAddr);  
44.   
45.     //连接服务器  
46.     retVal=connect(sHost,(LPSOCKADDR)&servAddr, sizeof(servAddr));    
47.     if(SOCKET_ERROR == retVal)  
48.     {  
49.         cout << "connect failed!" << endl;    
50.         closesocket(sHost); //关闭套接字  
51.         WSACleanup();       //释放套接字资源  
52.         return -1;  
53.     }  
54.     while(true){  
55.         //向服务器发送数据  
56.         ZeroMemory(buf, BUF_SIZE);  
57.         cout << " 向服务器发送数据:  ";  
58.         cin >> buf;  
59.         retVal = send(sHost, buf, strlen(buf), 0);  
60.         if (SOCKET_ERROR == retVal)  
61.         {  
62.             cout << "send failed!" << endl;  
63.             closesocket(sHost); //关闭套接字  
64.             WSACleanup();       //释放套接字资源  
65.             return -1;  
66.         }  
67.         //RecvLine(sHost, bufRecv);  
68.         recv(sHost, bufRecv,5 , 0);     // 接收服务器端的数据， 只接收5个字符  
69.         cout << endl <<"从服务器接收数据：" << bufRecv;  
70.   
71.     }  
72.     //退出  
73.     closesocket(sHost); //关闭套接字  
74.     WSACleanup();       //释放套接字资源  
75.     return 0;  
76. }  

// 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;}

           

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