socket 中的read

 1 #include<sys/types.h>
 2 #include<sys/socket.h>
 3 #include<netinet/in.h>
 4 #include<arpa/inet.h>
 5 #include<unistd.h>
 6 #include<string.h>
 7 #include<stdlib.h>
 8 #include<stdio.h>
 9 #define PORT 2345
10 
11 
12 int main(void)
13 {
14     char msgbuf[256];
15     int sockfd,newsockfd;
16     struct sockaddr_in addr;
17     int addr_len=sizeof(struct sockaddr_in);
18     if((sockfd=socket(AF_INET,SOCK_STREAM,0))<0)
19     {
20         perror("socket created error!");
21         exit(1);        
22     }
23     else
24     {
25         printf("socket created successfully!\nsocket id:%d\n",sockfd);
26     }
27     
28     bzero(&addr,sizeof(struct sockaddr_in));
29     addr.sin_family=AF_INET;
30     addr.sin_port=htons(PORT);
31     addr.sin_addr.s_addr=htonl(INADDR_ANY);
32     if(bind(sockfd,(struct sockaddr *)(&addr),sizeof(struct sockaddr))<0)
33     {
34         perror("bind error!");
35         exit(1);
36     }
37     else
38     {
39         printf("bind port successfully!\nlocal port:%d\n",PORT);
40     }
41     
42     if(listen(sockfd,5)<0)
43     {
44         perror("listen error!");
45         exit(1);
46     }
47     else
48     {
49         printf("listening ........\n");
50     }
51     
52     if((newsockfd=accept(sockfd,(struct sockaddr *)(&addr),&addr_len))<0)
53     {
54         perror("accept error!");
55     }
56     else
57     {
58         printf("connect from %s\n",inet_ntoa(addr.sin_addr));
59         if(read(newsockfd,msgbuf,sizeof(msgbuf))<=0)
60         {
61             perror("accept error!");
62         }
63         else
64         {
65             printf("message:\n%s \n",msgbuf);
66         }
67     }
68 
69     return 0;
70 }

 1 socket created successfully!
 2 socket id:3
 3 bind port successfully!
 4 local port:2345
 5 listening ........
 6 connect from 192.168.83.1
 7 message:
 8 GET / HTTP/1.1
 9 Host: 192.168.83.129:2345
10 Connection: keep-alive
11 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
12 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.0.0 Sa