网络并发服务器设计---9

 1 #include <stdio.h>
 2 #include <sys/types.h>   
 3 #include <sys/socket.h>
 4 #include <string.h>
 5 #include <netinet/in.h>
 6 
 7 #include <unistd.h>
 8 
 9 #define portnum 3333
10 
11 int main()
12 {
13     int sockfd;
14     int new_fd;
15     char buffer[128];
16     int sin_size;
17     struct sockaddr_in server_addr;
18     struct sockaddr_in client_addr;
19     int nbyte=10;    //表示服务器打印前十个字节
20     int pid;
21     
22     //1.创建套接字
23     if((sockfd = socket(AF_INET,SOCK_STREAM,0)) == -1)
24     {
25         printf("creat socket error!\n");
26         exit(1);
27     }
28     
29     //2.1设置绑定的地址
30     bzero(&server_addr,sizeof(struct sockaddr_in)); 
31     server_addr.sin_family = AF_INET;
32     server_addr.sin_port = htons(portnum);
33     server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
34     
35     //2.2绑定地址
36     bind(sockfd, (struct sockaddr *)(&server_addr),sizeof(struct sockaddr));
37 
38     //3.监听端口
39     listen(sockfd,5);
40     
41     while(1)
42     {
43         //4.等待连接
44         sin_size = sizeof(struct sockaddr);
45         new_fd = accept(sockfd,(struct sockaddr *)(&client_addr),&sin_size);
46         printf("server get connection %s\n",inet_ntoa(client_addr.sin_addr));
47         
48         //创建子进程，由子进程处理数据通讯
49         if((pid = fork())== 0)
50         {
51             //5.接受数据
52             recv(new_fd,buffer,128,0);
53             buffer[nbyte] = ‘\0‘;
54             printf("server receive : %s\n",buffer);
55             close(new_fd);
56             close(sockfd);
57             exit(0);
58         }
59         else if(pid<0)
60             printf("fork error!\n");
61     
62         //6.结束连接
63         close(new_fd);
64     }
65     close(sockfd);
66 }