1 #include "stdafx.h"
  2 
  3 #define BUF_SIZE 64
  4 #include "winsock2.h"
  5 #include <iostream>
  6 using namespace std;
  7 #pragma comment(lib,"ws2_32.lib")
  8 
  9 int main()
 10 {
 11     WSADATA wsd; //WSADATA变量
 12     SOCKET sServer; //服务器套接字
 13     SOCKET sClient; //客户端套接字
 14     SOCKADDR_IN addServ; //服务器地址
 15     char buf[BUF_SIZE]; //接收数据缓冲区
 16     int retVal; //返回值
 17 
 18     //初始化套接字动态库
 19     if(WSAStartup(MAKEWORD(2,2), &wsd) != 0)
 20     {
 21         printf("初始化套接字动态库失败了");
 22         return 1;
 23     }
 24 
 25     //创建套接字
 26     sServer = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
 27     if(INVALID_SOCKET == sServer)
 28     {
 29         printf("创建套接字失败");
 30         WSACleanup(); //释放资源
 31         return -1;
 32     }
 33 
 34     //弄一个服务器套接字地址
 35     addServ.sin_family = AF_INET;
 36     addServ.sin_port = htons(4999);
 37     addServ.sin_addr.s_addr = INADDR_ANY;
 38 
 39     //绑定套接字
 40     retVal = bind(sServer,(LPSOCKADDR)&addServ,sizeof(SOCKADDR_IN));
 41     if(SOCKET_ERROR == retVal)
 42 
 43     {
 44         printf("绑定套接字失败");
 45         closesocket(sServer);
 46         WSACleanup();
 47         return -1;
 48     }
 49     else
 50     {
 51         cout<<"server succeeded!"<<endl;
 52     }
 53 
 54     //开始监听
 55     retVal = listen(sServer,1);
 56     if(retVal == SOCKET_ERROR)
 57     {
 58         printf("监听失败");
 59         closesocket(sServer);
 60         WSACleanup();
 61         return -1;
 62     }
 63     else
 64     {
 65         cout<<"waiting for client ...."<<endl;
 66     }
 67 
 68     //接受客户端请求
 69     sockaddr_in addClient;
 70     int addrClientlen  = sizeof(addClient);
 71     sClient = accept(sServer,(sockaddr FAR*)&addClient,&addrClientlen);
 72     if(sClient == INVALID_SOCKET)
 73     {
 74         printf("接受客户端请求失败");
 75         closesocket(sServer);
 76         
 77         WSACleanup();
 78         return -1;
 79     }
 80     else
 81     {
 82         cout<<"Accept a client"<<endl;
 83     }
 84 
 85     //接受客户端数据
 86     ZeroMemory(buf,BUF_SIZE);
 87     retVal = recv(sClient,buf,BUF_SIZE,0);
 88     if(retVal == SOCKET_ERROR)
 89     {
 90         printf("接受客户端数据时不幸");
 91         closesocket(sServer);
 92         closesocket(sClient);
 93         WSACleanup();
 94         return -1;
 95     }
 96     //printf("%s",buf);
 97     cout<<buf<<endl;
 98     
 99     
100 
101     //退出
102     closesocket(sServer);
103     closesocket(sClient);
104     WSACleanup();
105     cout<<"server exiting..."<<endl;
106     system("pause");
107     return 0;
108 
109 
110 
111 }

1 // client.cpp : 定义控制台应用程序的入口点。
 2 //
 3 
 4 #include "stdafx.h"
 5 #include "winsock2.h"
 6 #include <iostream>
 7 using namespace std;
 8 #pragma comment(lib,"ws2_32.lib")
 9 #define BUF_SIZE 64
10 
11 int _tmain(int argc, _TCHAR* argv[])
12 {
13     WSADATA wsd;
14     SOCKET sHost; //服务器套接字
15     SOCKADDR_IN servAddr; //服务器地址
16     char buf[BUF_SIZE]; //接受数据缓冲区
17     int retVal; //返回值
18 
19     //初始化套接字动态库
20     if(WSAStartup(MAKEWORD(2,2),&wsd) != 0 )
21     {
22         printf("WSAStartup failed\n");
23         return -1;
24     }
25     else
26     {
27         cout<<"client succeeded!"<<endl;
28     }
29 
30     //创建套接字
31     sHost = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
32     if(sHost ==INVALID_SOCKET)
33         {
34             printf("socket failed");
35             WSACleanup();
36             return -1;
37         }
38     
39     //配置服务器套接字地址还有端口什么的
40     servAddr.sin_family = AF_INET;
41     servAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
42     servAddr.sin_port = htons(4999);
43     int nServAddlen = sizeof(servAddr);
44     cout<<"be ready to connect to server"<<endl;
45 
46     //链接服务器地址
47     retVal = connect(sHost,(LPSOCKADDR)&servAddr,sizeof(servAddr));
48     if(retVal == SOCKET_ERROR)
49     {
50         printf("connect falied");
51             system("pause");
52         closesocket(sHost);
53         WSACleanup();
54         return -1;
55     }
56     else
57     {
58         cout<<"connceted successfully"<<endl;
59     }
60 
61     //向服务器发送数据
62     ZeroMemory(buf,BUF_SIZE);
63     strcpy(buf,"Hello Server");
64     
65     retVal = send(sHost,buf,strlen(buf),0);
66     if(retVal == SOCKET_ERROR)
67     {
68         printf("send failed");
69         closesocket(sHost);
70         WSACleanup();
71         return -1;
72     }
73 
74     //退出
75     closesocket(sHost);
76     WSACleanup();
77     cout<<"client exiting..."<<endl;
78     system("pause");
79     return 0;
80 
81 }

现在想在服务端里打印出客户端的端口号，和客户端的ip地址。

应该用什么方法？