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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>uIP 1.0: webclient.c</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="classes.html"><span>Data Structures</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="examples.html"><span>Examples</span></a></li> </ul></div><h1>webclient.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/**</span><a name="l00002"></a>00002 <span class="comment"> * \addtogroup apps</span><a name="l00003"></a>00003 <span class="comment"> * @{</span><a name="l00004"></a>00004 <span class="comment"> */</span><a name="l00005"></a>00005 <span class="comment"></span><a name="l00006"></a>00006 <span class="comment">/**</span><a name="l00007"></a>00007 <span class="comment"> * \defgroup webclient Web client</span><a name="l00008"></a>00008 <span class="comment"> * @{</span><a name="l00009"></a>00009 <span class="comment"> *</span><a name="l00010"></a>00010 <span class="comment"> * This example shows a HTTP client that is able to download web pages</span><a name="l00011"></a>00011 <span class="comment"> * and files from web servers. It requires a number of callback</span><a name="l00012"></a>00012 <span class="comment"> * functions to be implemented by the module that utilizes the code:</span><a name="l00013"></a>00013 <span class="comment"> * webclient_datahandler(), webclient_connected(),</span><a name="l00014"></a>00014 <span class="comment"> * webclient_timedout(), webclient_aborted(), webclient_closed().</span><a name="l00015"></a>00015 <span class="comment"> */</span><a name="l00016"></a>00016 <span class="comment"></span><a name="l00017"></a>00017 <span class="comment">/**</span><a name="l00018"></a>00018 <span class="comment"> * \file</span><a name="l00019"></a>00019 <span class="comment"> * Implementation of the HTTP client.</span><a name="l00020"></a>00020 <span class="comment"> * \author Adam Dunkels <adam@dunkels.com></span><a name="l00021"></a>00021 <span class="comment"> */</span><a name="l00022"></a>00022 <a name="l00023"></a>00023 <span class="comment">/*</span><a name="l00024"></a>00024 <span class="comment"> * Copyright (c) 2002, Adam Dunkels.</span><a name="l00025"></a>00025 <span class="comment"> * All rights reserved.</span><a name="l00026"></a>00026 <span class="comment"> *</span><a name="l00027"></a>00027 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span><a name="l00028"></a>00028 <span class="comment"> * modification, are permitted provided that the following conditions</span><a name="l00029"></a>00029 <span class="comment"> * are met:</span><a name="l00030"></a>00030 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span><a name="l00031"></a>00031 <span class="comment"> * notice, this list of conditions and the following disclaimer.</span><a name="l00032"></a>00032 <span class="comment"> * 2. Redistributions in binary form must reproduce the above</span><a name="l00033"></a>00033 <span class="comment"> * copyright notice, this list of conditions and the following</span><a name="l00034"></a>00034 <span class="comment"> * disclaimer in the documentation and/or other materials provided</span><a name="l00035"></a>00035 <span class="comment"> * with the distribution.</span><a name="l00036"></a>00036 <span class="comment"> * 3. The name of the author may not be used to endorse or promote</span><a name="l00037"></a>00037 <span class="comment"> * products derived from this software without specific prior</span><a name="l00038"></a>00038 <span class="comment"> * written permission.</span><a name="l00039"></a>00039 <span class="comment"> *</span><a name="l00040"></a>00040 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS</span><a name="l00041"></a>00041 <span class="comment"> * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED</span><a name="l00042"></a>00042 <span class="comment"> * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span><a name="l00043"></a>00043 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY</span><a name="l00044"></a>00044 <span class="comment"> * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span><a name="l00045"></a>00045 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE</span><a name="l00046"></a>00046 <span class="comment"> * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span><a name="l00047"></a>00047 <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,</span><a name="l00048"></a>00048 <span class="comment"> * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span><a name="l00049"></a>00049 <span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span><a name="l00050"></a>00050 <span class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span><a name="l00051"></a>00051 <span class="comment"> *</span><a name="l00052"></a>00052 <span class="comment"> * This file is part of the uIP TCP/IP stack.</span><a name="l00053"></a>00053 <span class="comment"> *</span><a name="l00054"></a>00054 <span class="comment"> * $Id: webclient.c,v 1.2 2006/06/11 21:46:37 adam Exp $</span><a name="l00055"></a>00055 <span class="comment"> *</span><a name="l00056"></a>00056 <span class="comment"> */</span><a name="l00057"></a>00057 <a name="l00058"></a>00058 <span class="preprocessor">#include "<a class="code" href="a00136.html">uip.h</a>"</span><a name="l00059"></a>00059 <span class="preprocessor">#include "uiplib.h"</span><a name="l00060"></a>00060 <span class="preprocessor">#include "<a class="code" href="a00111.html">webclient.h</a>"</span><a name="l00061"></a>00061 <span class="preprocessor">#include "<a class="code" href="a00103.html">resolv.h</a>"</span><a name="l00062"></a>00062 <a name="l00063"></a>00063 <span class="preprocessor">#include <string.h></span><a name="l00064"></a>00064 <a name="l00065"></a>00065 <span class="preprocessor">#define WEBCLIENT_TIMEOUT 100</span><a name="l00066"></a>00066 <span class="preprocessor"></span><a name="l00067"></a>00067 <span class="preprocessor">#define WEBCLIENT_STATE_STATUSLINE 0</span><a name="l00068"></a>00068 <span class="preprocessor"></span><span class="preprocessor">#define WEBCLIENT_STATE_HEADERS 1</span><a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#define WEBCLIENT_STATE_DATA 2</span><a name="l00070"></a>00070 <span class="preprocessor"></span><span class="preprocessor">#define WEBCLIENT_STATE_CLOSE 3</span><a name="l00071"></a>00071 <span class="preprocessor"></span><a name="l00072"></a>00072 <span class="preprocessor">#define HTTPFLAG_NONE 0</span><a name="l00073"></a>00073 <span class="preprocessor"></span><span class="preprocessor">#define HTTPFLAG_OK 1</span><a name="l00074"></a>00074 <span class="preprocessor"></span><span class="preprocessor">#define HTTPFLAG_MOVED 2</span><a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor">#define HTTPFLAG_ERROR 3</span><a name="l00076"></a>00076 <span class="preprocessor"></span><a name="l00077"></a>00077 <a name="l00078"></a>00078 <span class="preprocessor">#define ISO_nl 0x0a</span><a name="l00079"></a>00079 <span class="preprocessor"></span><span class="preprocessor">#define ISO_cr 0x0d</span><a name="l00080"></a>00080 <span class="preprocessor"></span><span class="preprocessor">#define ISO_space 0x20</span><a name="l00081"></a>00081 <span class="preprocessor"></span><a name="l00082"></a>00082 <a name="l00083"></a>00083 <span class="keyword">static</span> <span class="keyword">struct </span><a name="_a251"></a><a class="code" href="a00097.html">webclient_state</a> s;<a name="l00084"></a>00084 <a name="l00085"></a>00085 <span class="comment">/*-----------------------------------------------------------------------------------*/</span><a name="l00086"></a>00086 <span class="keywordtype">char</span> *<a name="l00087"></a>00087 <a name="a252"></a><a class="code" href="a00163.html#g4433d3af16ea083a81576d0f18ba57c9">webclient_mimetype</a>(<span class="keywordtype">void</span>)<a name="l00088"></a>00088 {<a name="l00089"></a>00089 <span class="keywordflow">return</span> s.<a name="a253"></a><a class="code" href="a00097.html#fb60f42593d305ea36d9b4303722696e">mimetype</a>;<a name="l00090"></a>00090 }<a name="l00091"></a>00091 <span class="comment">/*-----------------------------------------------------------------------------------*/</span><a name="l00092"></a>00092 <span class="keywordtype">char</span> *<a name="l00093"></a>00093 <a name="a254"></a><a class="code" href="a00163.html#g41e616d3fcc17e0aabfe8ab45ef0d30f">webclient_filename</a>(<span class="keywordtype">void</span>)<a name="l00094"></a>00094 {<a name="l00095"></a>00095 <span class="keywordflow">return</span> s.<a name="a255"></a><a class="code" href="a00097.html#e87913860c6b05c6e6b060639b950098">file</a>;<a name="l00096"></a>00096 }<a name="l00097"></a>00097 <span class="comment">/*-----------------------------------------------------------------------------------*/</span><a name="l00098"></a>00098 <span class="keywordtype">char</span> *<a name="l00099"></a>00099 <a name="a256"></a><a class="code" href="a00163.html#g0e0ea5f24b77f124ba33bcbc7ede5bfb">webclient_hostname</a>(<span class="keywordtype">void</span>)<a name="l00100"></a>00100 {⌨️ 快捷键说明
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