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 plaincopyprint?

1. #include <windows.h>
2. #include <iostream.h>
3. #include <winsock.h>
4. #pragma comment(lib,"ws2_32.lib")
5. #define NO_FLAGS_SET 0
6. #define PORT (u_short)44965
7. #define MAXBUFLEN 256
8. //服务器 -- VC++ Socket编程 简单的Tcp/ip服务器
9. int main()
10. {
11. WSADATA Data;
12. SOCKADDR_IN serverSockAddr;
13. SOCKADDR_IN clientSockAddr;
14. SOCKET serverSocket;
15. SOCKET clientSocket;
16. int addrLen=sizeof(SOCKADDR_IN);
17. int status;
18. int numrcv;
19. char buffer[MAXBUFLEN];
20. /* initialize the Windows Socket DLL */
21. status=WSAStartup(MAKEWORD(1, 1), &Data);
22. if (status != 0)
23. cerr << "ERROR: WSAStartup unsuccessful" << endl;
24. /* zero the sockaddr_in structure */
25. memset(&serverSockAddr, 0, sizeof(serverSockAddr));
26. /* specify the port portion of the address */
27. serverSockAddr.sin_port=htons(PORT);
28. /* specify the address family as Internet */
29. serverSockAddr.sin_family=AF_INET;
30. /* specify that the address does not matter */
31. serverSockAddr.sin_addr.s_addr=htonl(INADDR_ANY);
32. /* 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) */
33. serverSocket = socket(AF_INET, SOCK_STREAM, 0);
34. if (serverSocket == INVALID_SOCKET)
35. cerr << "ERROR: socket unsuccessful" << endl;
36. /* associate the socket with the address */
37. status=bind(serverSocket, (LPSOCKADDR)&serverSockAddr, sizeof(serverSockAddr));
38. if (status == SOCKET_ERROR)
39. cerr << "ERROR: bind unsuccessful" << endl;
40. /* 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) */
41. status=listen(serverSocket, 1);
42. if (status == SOCKET_ERROR)
43. cerr << "ERROR: listen unsuccessful" << endl;
44. /* accept the connection request when one is received */
45. clientSocket=accept(serverSocket, (LPSOCKADDR)&clientSockAddr, &addrLen);
46. cout << "Got the connection..." << endl;
47. while(1)
48. {
49. /* 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) */
50. numrcv=recv(clientSocket, buffer, MAXBUFLEN, NO_FLAGS_SET);
51. if ((numrcv == 0) || (numrcv == SOCKET_ERROR))
52. {
53. cout << "Connection terminated." << endl;
54. status=closesocket(clientSocket);
55. if (status == SOCKET_ERROR)
56. cerr << "ERROR: closesocket unsuccessful" << endl;
57. status=WSACleanup();
58. if (status == SOCKET_ERROR)
59. cerr << "ERROR: WSACleanup unsuccessful" << endl;
60. return(1);
61. }
62. cout << buffer << endl;
63. } /* while */
64. }

#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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客户端：