http_session.h

/*file :http_session.h  */
#ifndef HTTP_SESSION_H
#define HTTP_SESSION_H

#include <netinet/in.h>
#define RECV_BUFFER_SIZE 1024 // recv()????     1Kb of send buffer
#define SEND_BUFFER_SIZE     1050000// 1.x MB of senf buffer
#define URI_SIZE 128
//length of url request from cient browse
#define TIME_OUT_SEC 10 //select timeout of second
#define TIME_OUT_USEC 0   //select timeout of usecend

#define FILE_OK 200
#define FILE_FORBIDEN 403
//there are no access permission
#define FILE_NOT_FOUND 404 //file not on server

#define UNALLOW_METHOD 405 //
#define FILE_TOO_LARGE 413
#define URI_TOO_LONG 414
#define UNSUPPORT_MIME_TYPE 415
#define  UNSUPPORT_HTTP_VERSION 505
#define FILE_MAX_SIZE 1048576

#define ALLOW   "Allow:GET"  //the server allow get request method
#define SERVER "Server:Mutu(0.1 Alpha)/Linux"

//if the connect protocol is http then this function deal with it
int http_session(int *connect_fd,struct sockaddr_in *client_addr);
//if http protocol return 1,else return 0
int is_http_protocol(char *msg_form_client);

//get the request header's uri
char *get_uri(char  *req_header,char *uri_buf);

//get the uri status ,access return 0,not exist return 1,permission deny return  2,error return -1
int get_uri_status(char  *uri);
//

//get the mime type of the file request in uri from client's browse

char *get_mime_type(char *uri);

//read the file which requested by client in uri ,and store in entity_buf
//success return bytes readed error return -1

int get_file_disk(char *uri ,unsigned char *entity_buf);

/*set http reply header's status:
    200: ok 
    404:  file not found
*/
int set_rep_status();
 
int set_error_information(unsigned char*send_buf,int errorno);

int reply_normal_information(unsigned char *send_buf,unsigned char *file_buf,int file_size,char *mime_type);
#endif