- 技术人生
- 简单Socket编程
01 server端：
02
03 #include <WINSOCK2.H>
04 #include <stdio.h>
05 #pragma comment(lib,"ws2_32.lib")
06 void main()
07 {
08 //创建套接字
09 WORD myVersionRequest;
10 WSADATA wsaData;
11 myVersionRequest=MAKEWORD(1,1);
12 int err;
13 err=WSAStartup(myVersionRequest,&wsaData);
14 if (!err)
15 {
16 printf ( "已打开套接字/n" );
17 }
18 else
19 {
20 //进一步绑定套接字
21 printf ( "嵌套字未打开!" );
22 return ;
23 }
24 SOCKET serSocket=socket(AF_INET,SOCK_STREAM,0); //创建了可识别套接字
25 //需要绑定的参数
26 SOCKADDR_IN addr;
27 addr.sin_family=AF_INET;
28 addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY); //ip地址
29 addr.sin_port=htons(6000); //绑定端口
30
31 bind(serSocket,(SOCKADDR*)&addr, sizeof (SOCKADDR)); //绑定完成
32 listen(serSocket,5); //其中第二个参数代表能够接收的最多的连接数
33
34 //
35 //开始进行监听
36 //
37 SOCKADDR_IN clientsocket;
38 int len= sizeof (SOCKADDR);
39 while (1)
40 {
41 SOCKET serConn=accept(serSocket,(SOCKADDR*)&clientsocket,&len); //如果这里不是accept而是conection的话。。就会不断的监听
42 char sendBuf[100];
43
44 sprintf (sendBuf, "welcome %s to bejing" ,inet_ntoa(clientsocket.sin_addr)); //找对对应的IP并且将这行字打印到那里
45 send(serConn,sendBuf, strlen (sendBuf)+1,0);
46 char receiveBuf[100]; //接收
47 recv(serConn,receiveBuf, strlen (receiveBuf)+1,0);
48 printf ( "%s/n" ,receiveBuf);
49 closesocket(serConn); //关闭
50 WSACleanup(); //释放资源的操作
51 }
52 }
53
54
55
56 client端：
57
58
59 #include <WINSOCK2.H>
60 #include <stdio.h>
61 #pragma comment(lib,"ws2_32.lib")
62 void main()
63 {
64 int err;
65 WORD versionRequired;
66 WSADATA wsaData;
67 versionRequired=MAKEWORD(1,1);
68 err=WSAStartup(versionRequired,&wsaData); //协议库的版本信息
69 if (!err)
70 {
71 printf ( "客户端嵌套字已经打开!/n" );
72 }
73 else
74 {
75 printf ( "客户端的嵌套字打开失败!/n" );
76 return ; //结束
77 }
78 SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,0);
79 SOCKADDR_IN clientsock_in;
80 clientsock_in.sin_addr.S_un.S_addr=inet_addr( "127.0.0.1" );
81 clientsock_in.sin_family=AF_INET;
82 clientsock_in.sin_port=htons(6000);
83 //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数
84 //listen(clientSocket,5);
85 connect(clientSocket,(SOCKADDR*)&clientsock_in, sizeof (SOCKADDR)); //开始连接
86 char receiveBuf[100];
87 recv(clientSocket,receiveBuf,101,0);
88 printf ( "%s/n" ,receiveBuf);
89 send(clientSocket, "hello,this is client" , strlen ( "hello,this is client" )+1,0);
90 closesocket(clientSocket);
91 WSACleanup();
92 }
