首先分析http协议的报头数据
1: GET /index.html HTTP/1.1
2: Host: localhost:8000
; Ubuntu; Linux i686; rv:10.0.1) Gecko/20100101 Firefox/10.0.1
;q=0.9,*/*;q=0.8
;q=0.5
6: Accept-Encoding: gzip, deflate
7: Connection: keep-alive
得到第一行数据GET /index.html /HTTP/1.1
建立一个简单的web程序，大致流程与笔记一种类型
直接贴代码了
服务端代码：
/**
** web_server.c
** copyright Xu Dongdong 2013.5.9 Open Source Software License.
*/
5:
#include <stdio.h>
/*exit */
/*memset*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
14:
int port = 8000;
16:
;
char ret_buf[32768];
int num_buf);
20:
char*argv[])
22: {
23:
char * )malloc(4001);
25:
int rc;
27:
struct sockaddr_in serv_addr;
struct sockaddr_in cli_addr;
30:
int sockfd;
struct hostent* entity;
int total_recv, total_sent,bytes_sent,total_size,size;
int sockfd_tmp;
int addr_size;
36:
char *buf;
int i,len;
39:
40: sockfd = socket(AF_INET, SOCK_STREAM,0);
if(sockfd == -1)
42: {
);
44: exit(1);
45: }
sizeof(serv_addr));
47: serv_addr.sin_family = AF_INET;
48: serv_addr.sin_addr.s_addr= htonl(INADDR_ANY);
49: serv_addr.sin_port = htons(port);
50:
51:
sizeof(serv_addr)) == -1)
53: {
);
55: exit(1);
56: }
57:
if(listen(sockfd,20) == -1)
59: {
);
61: exit(1);
62: }
63:
);
65:
while(1)
67: {
struct sockaddr_in);
do{
struct sockaddr*)&cli_addr,&rc);
while( sockfd_tmp == -1 && errno == EINTR);
if(sockfd_tmp == -1)
73: {
);
75: exit(1);
76: }
77:
struct in_addr),AF_INET);
79: i = recv(sockfd_tmp,recvBuffer,4000,0) ;
if(i == -1)
81: {
);
break;
84: }
break;
'\0' ;
87:
,recvBuffer);
89:
90: buf = read_file(recvBuffer, total_recv);
91: size = strlen(buf);
92: total_sent = 0;
93:
do{
95: bytes_sent = send(sockfd_tmp ,buf+total_sent, strlen(buf + total_sent) ,0);
if(bytes_sent == -1)
97: {
break;
99: }
100: total_sent += bytes_sent;
while(total_size < size) ;
102:
103: close(sockfd_tmp);
104: }
105:
return EXIT_SUCCESS;
107: }
108:
int num_buf)
110: {
int i ;
char * cp, *cp2 ;
113: FILE * file;
114: cp =buf +5 ;
);
if(cp2 != NULL )
117: {
'\0' ;
119: }
120:
);
if(file == NULL )
123: {
return error_return;
125: }
126: i= fread(ret_buf ,1 ,32768 ,file);
127:
if(i==0)
129: {
130: fclose(file);
return error_return;
132: }
133:
'\0';
135: fclose(file);
return ret_buf;
137: }
客户端代码：
/**
** client.c
** copyright Xu Dongdong 2013.5.9 Open Source Software License.
*/
5:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
9:
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
14:
//local host
int port = 8000 ;
17:
char*argv[])
19: {
char buf[8192];
char message[256];
22:
struct sockaddr_in cli_addr;
24:
int sockfd;
struct hostent *serv_host_name;
27:
28:
if((serv_host_name = gethostbyname(host_name)) ==0)
30: {
);
32: exit(1);
33: }
34:
35:
36: sockfd = socket(AF_INET, SOCK_STREAM,0);
if(sockfd == -1)
38: {
);
40: exit(1);
41: }
42:
sizeof(cli_addr));
44: cli_addr.sin_family = AF_INET;
45: cli_addr.sin_addr.s_addr= htonl(INADDR_ANY);
struct in_addr *)(serv_host_name -> h_addr) )-> s_addr);
47: cli_addr.sin_port = htons(port);;
48:
sizeof(cli_addr)) == -1)
50: {
);
52: exit(1);
53: }
54:
);
, message);
57:
if(send(sockfd,message,strlen(message), 0) == -1)
59: {
);
61: exit(1);
62: }
63:
);
65:
if(recv(sockfd,buf,8192,0) == -1)
67: {
);
69: exit(1);
70: }
,buf);
72:
73: close(sockfd);
74: }
75:
直接使用gcc编译运行即可
可以使用浏览器作为客户端进行访问，具体的url为： http://localhost:8000/index.html
作为实例我们给出最简单你的html代码 index.html
1: <html>
2: <head>
3: </head>
4: <body>
5: index.html
6: </body>
7: </html>