http_hdrs.h

完整实现http协议源代码（WINDOWS或LINUX平台均可移植使用）,我在VC++上(不调用WINDOWS的HTTP的API)可实现XML文件下载等.

/*
 * http_hdrs.h -- This file contains declarations for http headers
 * Created: Christopher Blizzard <[e-mail]>, 3-Aug-1998
 *
 * Copyright (C) 1998 Free Software Foundation
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef HTTP_HDRS_H
#define HTTP_HDRS_H

#include "ghttp_constants.h"

/* the list of known headers */
extern const char *http_hdr_known_list[];

/* a header list */
#define HTTP_HDRS_MAX 256
typedef struct http_hdr_list_tag
{
  char *header[HTTP_HDRS_MAX];
  char *value[HTTP_HDRS_MAX];
} http_hdr_list;

/* functions dealing with headers */

/* check to see if the library knows about the header */
const char *
http_hdr_is_known(const char *a_hdr);

/* create a new list */
http_hdr_list *
http_hdr_list_new(void);

/* destroy a list */
void
http_hdr_list_destroy(http_hdr_list *a_list);

/* set a value in a list */
int
http_hdr_set_value(http_hdr_list *a_list,
		   const char *a_name,
		   const char *a_val);

/* set the value in a list from a range, not a NTS */
int
http_hdr_set_value_no_nts(http_hdr_list *a_list,
			  const char *a_name_start,
			  int a_name_len,
			  const char *a_val_start,
			  int a_val_len);

/* get a copy of a value in a list */
char *
http_hdr_get_value(http_hdr_list *a_list,
		   const char *a_name);

/* get a copy of the headers in a list */
int
http_hdr_get_headers(http_hdr_list *a_list,
		     char ***a_names,
		     int *a_num_names);

/* clear a header in a list */
int
http_hdr_clear_value(http_hdr_list *a_list,
		     const char *a_name);


#endif /* HTTP_HDRS_H */