http.h

多线程 http资源下载工具 给予linux平台的。还凑合。有bug给我联系

#ifndef __DOND_HTTP_H
#define __DOND_HTTP_H


#define SIZE_INT sizeof (int)


#define MAX_PORT 65535




#define SIZE_SOCKADDR (socklen_t) sizeof (struct sockaddr)

#define MAX_LEN_DOMAIN 128
#define MIN_LEN_DOMAIN 1

#define MAX_LEN_PORT 6
#define MIN_LEN_PORT 0

#define MAX_LEN_PATH 512
#define MIN_LEN_PATH 2




#define MAX_LEN_URL_HTTP (MAX_LEN_DOMAIN + MAX_LEN_PORT + MAX_LEN_PATH + 1)
#define MIN_LEN_URL_HTTP (MIN_LEN_DOMAIN + MIN_LEN_PORT + MIN_LEN_PATH)


#define RES_OK_1_1 "HTTP/1.1 2"
#define RES_RED_1_1 "HTTP/1.1 3"

#define RES_OK_1_0 "HTTP/1.0 2"
#define RES_RED_1_0 "HTTP/1.0 3"

#define RES_RANGE_1_1 "HTTP/1.0 206"
#define RES_RANGE_1_0 "HTTP/1.1 206"
#define LEN_RES_RANGE (sizeof (RES_RANGE_1_1) - 1)
#define LEN_HTTP_RES (sizeof (RES_OK_1_1) - 1)

#define CONTENT_PFIX "\r\n\r\n"
#define LEN_CONTENT_PFIX (sizeof ("\r\n\r\n") - 1)

#define CONTENT_LENGTH "Content-Length"
#define LEN_CONTENT_LENGTH  (sizeof (CONTENT_LENGTH) - 1)

#define HEAD_TERMINAL "\r\n"

#define WHITE_SPACE ' '
#define TAB '\t'

#define SCHEME_HTTP "http"
#define LEN_SCHEME_HTTP (sizeof (SCHEME_HTTP) - 1)




#define CMD_OK 1
#define CMD_DONE 2
#define CMD_RETRY 3
#define CMD_ERR -1
#define MAX_RETRY 10
#define SIZE_CMD 2

#define CONNECTS_NUM 16
#define COUNT_READ 22

#define KB (1<<10)
#define MB (1<<20)

#define C_ISNUM(c) (((c >= '0') && (c <= '9' ))? 1: 0)
#define C_ISBLANK(c) (((TAB == c) || (WHITE_SPACE == c))? 1: 0)
#define C_ISLOWER(c) (((c >= 'a') && (c <= 'z'))? 1: 0)
#define C_ISUPPER(c) (((c >= 'A') && (c <= 'A'))? 1: 0)
#define C_ISALPHA(c) ((C_ISUPPER (c) || C_ISLOWER (c))? 1: 0)

#define min(a, b) ((a < b)? a: b)


struct file_range
{
  int fd;
  off_t offset;
  size_t nbytes;
  char recv;
};


struct resource_info
{
  struct sockaddr_in sockaddr;
  char *path;
  size_t len_path;
  size_t size;
};

struct command
{
  int value;
  void *opt;
};



struct url_http
{
  char *domain;
  size_t len_domain;
  char *port;
  size_t len_port;
  char *path;
  size_t len_path;
};




/* display total of download bytes by http handler. */


/* argument of display_result. */
struct display_args
{
  size_t file_size; 		/* resource size. */
  size_t nbytes_read;		/* has been download. */
};





/* send request to get resource. */


/* arguments of send_request_get_file. */
struct send_args
{
  struct file_range fr;		  /* range of resource. */
  struct resource_info *resource; /* information of resource. */
  int fd_output;		  /* used to pass socket fd that has been connected. */
};











#endif	/* __DOND_HTTP_H */