在visual c++里建两个win32控制台工程，分别编译下面的服务端和客户端

服务端：

[cpp] view plain copy print ?

1. #include <windows.h>  
2. #include <iostream.h>  
3. #include <winsock.h>  
4. #pragma comment(lib,"ws2_32.lib")  
5.   
6. #define NO_FLAGS_SET 0  
7. #define PORT (u_short)44965  
8. #define MAXBUFLEN 256  
9.   
10. //服务器 -- VC++ Socket编程 简单的Tcp/ip服务器  
11. int main()  
12. {  
13. WSADATA Data;  
14. SOCKADDR_IN serverSockAddr;  
15. SOCKADDR_IN clientSockAddr;  
16. SOCKET serverSocket;  
17. SOCKET clientSocket;  
18. int addrLen=sizeof(SOCKADDR_IN);  
19. int status;  
20. int numrcv;  
21. char buffer[MAXBUFLEN];  
22.   
23. /* initialize the Windows Socket DLL */  
24. status=WSAStartup(MAKEWORD(1, 1), &Data);  
25. if (status != 0)  
26.    cerr << "ERROR: WSAStartup unsuccessful" << endl;  
27.   
28. /* zero the sockaddr_in structure */  
29. memset(&serverSockAddr, 0, sizeof(serverSockAddr));  
30.   
31. /* specify the port portion of the address */  
32. serverSockAddr.sin_port=htons(PORT);  
33. /* specify the address family as Internet */  
34. serverSockAddr.sin_family=AF_INET;  
35. /* specify that the address does not matter */  
36. serverSockAddr.sin_addr.s_addr=htonl(INADDR_ANY);  
37.   
38. /* create a socket socket(通信发生的区域,套接字的类型,套接字使用的特定协议) */  
39. serverSocket = socket(AF_INET, SOCK_STREAM, 0);  
40. if (serverSocket == INVALID_SOCKET)  
41.    cerr << "ERROR: socket unsuccessful" << endl;  
42.   
43. /* associate the socket with the address */  
44. status=bind(serverSocket, (LPSOCKADDR)&serverSockAddr, sizeof(serverSockAddr));  
45. if (status == SOCKET_ERROR)  
46.    cerr << "ERROR: bind unsuccessful" << endl;  
47.   
48. /* allow the socket to take connections listen(已建立、尚未连接的套接字号,连接队列的最大长度) */  
49. status=listen(serverSocket, 1);  
50. if (status == SOCKET_ERROR)  
51.    cerr << "ERROR: listen unsuccessful" << endl;  
52.   
53. /* accept the connection request when one is received */  
54. clientSocket=accept(serverSocket, (LPSOCKADDR)&clientSockAddr, &addrLen);  
55.   
56. cout << "Got the connection..." << endl;  
57.   
58. while(1)  
59. {  
60.    /* recv(已连接的套接字, 接收输入数据缓冲区的指针, 缓冲区大小, 传输控制方式) */  
61.    numrcv=recv(clientSocket, buffer, MAXBUFLEN, NO_FLAGS_SET);  
62.    if ((numrcv == 0) || (numrcv == SOCKET_ERROR))  
63.    {  
64.     cout << "Connection terminated." << endl;  
65.      
66.     status=closesocket(clientSocket);  
67.     if (status == SOCKET_ERROR)  
68.      cerr << "ERROR: closesocket unsuccessful" << endl;  
69.      
70.     status=WSACleanup();  
71.     if (status == SOCKET_ERROR)  
72.      cerr << "ERROR: WSACleanup unsuccessful" << endl;  
73.     return(1);  
74.    }  
75.    cout << buffer << endl;  
76. } /* while */  
77. }  

#include <windows.h>
#include <iostream.h>
#include <winsock.h>
#pragma comment(lib,"ws2_32.lib")

#define NO_FLAGS_SET 0
#define PORT (u_short)44965
#define MAXBUFLEN 256

//服务器 -- VC++ Socket编程 简单的Tcp/ip服务器
int main()
{
WSADATA Data;
SOCKADDR_IN serverSockAddr;
SOCKADDR_IN clientSockAddr;
SOCKET serverSocket;
SOCKET clientSocket;
int addrLen=sizeof(SOCKADDR_IN);
int status;
int numrcv;
char buffer[MAXBUFLEN];

/* initialize the Windows Socket DLL */
status=WSAStartup(MAKEWORD(1, 1), &Data);
if (status != 0)
   cerr << "ERROR: WSAStartup unsuccessful" << endl;

/* zero the sockaddr_in structure */
memset(&serverSockAddr, 0, sizeof(serverSockAddr));

/* specify the port portion of the address */
serverSockAddr.sin_port=htons(PORT);
/* specify the address family as Internet */
serverSockAddr.sin_family=AF_INET;
/* specify that the address does not matter */
serverSockAddr.sin_addr.s_addr=htonl(INADDR_ANY);

/* create a socket socket(通信发生的区域,套接字的类型,套接字使用的特定协议) */
serverSocket = socket(AF_INET, SOCK_STREAM, 0);
if (serverSocket == INVALID_SOCKET)
   cerr << "ERROR: socket unsuccessful" << endl;

/* associate the socket with the address */
status=bind(serverSocket, (LPSOCKADDR)&serverSockAddr, sizeof(serverSockAddr));
if (status == SOCKET_ERROR)
   cerr << "ERROR: bind unsuccessful" << endl;

/* allow the socket to take connections listen(已建立、尚未连接的套接字号,连接队列的最大长度) */
status=listen(serverSocket, 1);
if (status == SOCKET_ERROR)
   cerr << "ERROR: listen unsuccessful" << endl;

/* accept the connection request when one is received */
clientSocket=accept(serverSocket, (LPSOCKADDR)&clientSockAddr, &addrLen);

cout << "Got the connection..." << endl;

while(1)
{
   /* recv(已连接的套接字, 接收输入数据缓冲区的指针, 缓冲区大小, 传输控制方式) */
   numrcv=recv(clientSocket, buffer, MAXBUFLEN, NO_FLAGS_SET);
   if ((numrcv == 0) || (numrcv == SOCKET_ERROR))
   {
    cout << "Connection terminated." << endl;
   
    status=closesocket(clientSocket);
    if (status == SOCKET_ERROR)
     cerr << "ERROR: closesocket unsuccessful" << endl;
   
    status=WSACleanup();
    if (status == SOCKET_ERROR)
     cerr << "ERROR: WSACleanup unsuccessful" << endl;
    return(1);
   }
   cout << buffer << endl;
} /* while */
}

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