http_req.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_req.h -- Routines for setting up an http request
 * Created: Christopher Blizzard <[e-mail]>, 6-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.
 */

/* types of requests */

#ifndef HTTP_REQ_H
#define HTTP_REQ_H

#include <stdio.h>
#include "http_hdrs.h"
#include "http_trans.h"

typedef enum http_req_type {
  http_req_type_get = 0,
  http_req_type_options,
  http_req_type_head,
  http_req_type_post,
  http_req_type_put,
  http_req_type_delete,
  http_req_type_trace,
  http_req_type_connect,
  http_req_type_propfind,
  http_req_type_proppatch,
  http_req_type_mkcol,
  http_req_type_copy,
  http_req_type_move,
  http_req_type_lock,
  http_req_type_unlock
} http_req_type;

typedef enum http_req_state_tag {
  http_req_state_start = 0,
  http_req_state_sending_request,
  http_req_state_sending_headers,
  http_req_state_sending_body
} http_req_state;

/* same character representations as above. */

extern const char *http_req_type_char[];

typedef struct http_req_tag {
  http_req_type type;
  float          http_ver;
  char          *host;
  char          *full_uri;
  char          *resource;
  char          *body;
  int            body_len;
  http_hdr_list *headers;
  http_req_state state;
} http_req;

http_req *
http_req_new(void);

void
http_req_destroy(http_req *a_req);

int
http_req_prepare(http_req *a_req);

int
http_req_send(http_req *a_req, http_trans_conn *a_conn);

#endif /* HTTP_REQ_H */