socket编程server端

 1 #include<stdlib.h>
 2 #include<string.h>
 3 #include<stdio.h>
 4 #include<sys/socket.h>
 5 #include<arpa/inet.h>
 6 #include<sys/types.h>
 7 #include<netinet/in.h>
 8 #define SERVER_PORT 8000
 9 int main()
10 {
11     struct sockaddr_in serveraddr,clientaddr;
12     //1,socket()
13     //2,bind()
14     //3,listen()
15     //4,accept()
16     char ipstr[128];
17     int sockfd,addrlen,confd;
18     sockfd=socket(AF_INET,SOCK_STREAM,0);
19 
20     bzero(&serveraddr,sizeof(serveraddr));
21     serveraddr.sin_family=AF_INET;
22     serveraddr.sin_addr.s_addr=htonl(INADDR_ANY);
23     serveraddr.sin_port=htons(SERVER_PORT);
24 
25     bind(sockfd,(struct sockaddr *)&serveraddr,sizeof(serveraddr));
26 
27     listen(sockfd,128);
28     while(1){
29     addrlen=sizeof(clientaddr);
30     confd=accept(sockfd,(struct sockaddr *)&clientaddr,&addrlen);
31 
32     printf("client ip %s\t port %d\n",inet_ntop(AF_INET,&clientaddr.sin_addr.s_addr,ipstr,sizeof(ipstr)),ntohs(clientaddr.sin_port));
33 
34     //connet with client
35     close(confd);
36     }
37 
38     close(sockfd);
39 
40     return 0;
41 }