在之前的博文中，我么用C代码玩过http, 在本文中， 我们用更简单的telnet命令来玩http, 爽一下, 步骤如下：
步骤1：用win + r 打开cmd
步骤2：在cmd中执行telnet www.baidu.com 80， 然后可以看到一个黑色的框框（首先要确保自己的PC可以访问www.baidu.com哈）
步骤3： 然后按 ctrl + ], 退出， 结果为：
欢迎使用 Microsoft Telnet Client
Escape 字符是 'CTRL+]'
Microsoft Telnet>
步骤4： 然后按enter, 进入到输入框， 又是黑漆漆的一片
步骤5：输入如下内容（有时间限制， 所以最好是先写好， 然后整体拷贝进去）
GET /index.html HTTP/1.1
Host: www.baidu.com
步骤6：然后连续按两下enter键盘， 得到的结果为：
GET /index.html HTTP/1.1
Host: www.baidu.com
HTTP/1.1 200 OK
Date: Sun, 11 Oct 2015 15:30:57 GMT
Content-Type: text/html
Content-Length: 14613
Last-Modified: Wed, 03 Sep 2014 02:48:32 GMT
Connection: Keep-Alive
Vary: Accept-Encoding
Set-Cookie: BAIDUID=FC14FFF7024BB891AAEFBAFDC8F5CC21:FG=1; expires=Thu, 31-Dec-3
7 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com
Set-Cookie: BIDUPSID=FC14FFF7024BB891AAEFBAFDC8F5CC21; expires=Thu, 31-Dec-37 23
:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com
Set-Cookie: PSTM=1444577457; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=214748
3647; path=/; domain=.baidu.com
Set-Cookie: BDSVRTM=0; path=/
P3P: CP=" OTI DSP COR IVA OUR IND COM "
Server: BWS/1.1
X-UA-Compatible: IE=Edge,chrome=1
Pragma: no-cache
Cache-control: no-cache
BDPAGETYPE: 1
BDQID: 0x8db1534b00081190
BDUSERID: 0
Accept-Ranges: bytes
<!DOCTYPE html><!--STATUS OK-->
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<link rel="dns-prefetch" href="//s1.bdstatic.com"/>
<link rel="dns-prefetch" href="//t1.baidu.com"/>
<link rel="dns-prefetch" href="//t2.baidu.com"/>
<link rel="dns-prefetch" href="//t3.baidu.com"/>
<link rel="dns-prefetch" href="//t10.baidu.com"/>
<link rel="dns-prefetch" href="//t11.baidu.com"/>
<link rel="dns-prefetch" href="//t12.baidu.com"/>
<link rel="dns-prefetch" href="//b1.bdstatic.com"/>
<title>鐧惧害涓€涓嬶紝浣犲氨鐭ラ亾</title>
<link href="http://s1.bdstatic.com/r/www/cache/static/home/css/index.css
" rel="stylesheet" type="text/css" />
<!--[if lte IE 8]><style index="index" >#content{height:480px\9}#m{top:2
60px\9}</style><![endif]-->
<!--[if IE 8]><style index="index" >#u1 a.mnav,#u1 a.mnav:visited{font-f
amily:simsun}</style><![endif]-->
<script>var hashMatch = document.location.href.match(/#+(.*wd=[^&].+)/);
if (hashMatch && hashMatch[0] && hashMatch[1]) {document.location.replace("http:
//"+location.host+"/s?"+hashMatch[1]);}var ns_c = function(){};</script>
<script>function h(obj){obj.style.behavior='url(#default#homepage)';var
a = obj.setHomePage('//www.baidu.com/');}</script>
<noscript><meta http-equiv="refresh" content="0; url=/baidu.html?from=no
script"/></noscript>
<script>window._ASYNC_START=new Date().getTime();</script>
</head>
<body link="#0000cc"><div id="wrapper" style="display:none;"><div id="u"><a href
="//www.baidu.com/gaoji/preferences.html" οnmοusedοwn="return user_c({'fm':'set
','tab':'setting','login':'0'})">鎼滅储璁剧疆</a>|<a id="btop" href="/" onmouse
down="return user_c({'fm':'set','tab':'index','login':'0'})">鐧惧害棣栭〉</a>|<a
id="lb" href="https://passport.baidu.com/v2/?login&tpl=mn&u=http%3A%2F%2Fwww.ba
idu.com%2F" οnclick="return false;" οnmοusedοwn="return user_c({'fm':'set','tab
':'login'})">鐧诲綍</a><a href="https://passport.baidu.com/v2/?reg®Type=1&tpl
=mn&u=http%3A%2F%2Fwww.baidu.com%2F" οnmοusedοwn="return user_c({'fm':'set','ta
b':'reg'})" target="_blank" class="reg">娉ㄥ唽</a></div><div id="head"><div clas
s="s_nav"><a href="/" class="s_logo" οnmοusedοwn="return c({'fm':'tab','tab':'lo
go'})"><img src="//www.baidu.com/img/baidu_jgylogo3.gif" width="117" height="38"
border="0" alt="鍒扮櫨搴﹂椤? title="鍒扮櫨搴﹂椤?></a><div class="s_tab"
id="s_tab"><a href="http://news.baidu.com/ns?cl=2&rn=20&tn=news&word=" wdfield=
"word" οnmοusedοwn="return c({'fm':'tab','tab':'news'})">鏂伴椈</a>　<b>
缃戦〉</b>　<a href="http://tieba.baidu.com/f?kw=&fr=wwwt" wdfield="kw" o
nmousedown="return c({'fm':'tab','tab':'tieba'})">璐村惂</a>　<a href="htt
p://zhidao.baidu.com/q?ct=17&pn=0&tn=ikaslist&rn=10&word=&fr=wwwt" wdfield="word
" οnmοusedοwn="return c({'fm':'tab','tab':'zhidao'})">鐭ラ亾</a>　<a href
="http://music.baidu.com/search?fr=ps&key=" wdfield="key" οnmοusedοwn="return c
({'fm':'tab','tab':'music'})">闊充箰</a>　<a href="http://image.baidu.com/
i?tn=baiduimage&ps=1&ct=201326592&lm=-1&cl=2&nc=1&word=" wdfield="word" onmouse
down="return c({'fm':'tab','tab':'pic'})">鍥剧墖</a>　<a href="http://v.ba
idu.com/v?ct=301989888&rn=20&pn=0&db=0&s=25&word=" wdfield="word" οnmοusedοwn=
"return c({'fm':'tab','tab':'video'})">瑙嗛</a>　<a href="http://map.bai
du.com/m?word=&fr=ps01000" wdfield="word" οnmοusedοwn="return c({'fm':'tab','ta
b':'map'})">鍦板浘</a>　<a href="http://wenku.baidu.com/search?word=&lm=0&
od=0" wdfield="word" οnmοusedοwn="return c({'fm':'tab','tab':'wenku'})">鏂囧簱<
/a>　<a href="//www.baidu.com/more/" οnmοusedοwn="return c({'fm':'tab','t
ab':'more'})">鏇村禄</a></div></div><form id="form" name="f" action="/s" class
="fm" ><input type="hidden" name="ie" value="utf-8"><input type="hidden" name="f
" value="8"><input type="hidden" name="rsv_bp" value="1"><span class="bg s_ipt_w
r"><input name="wd" id="kw" class="s_ipt" value="" maxlength="100"></span><span
class="bg s_btn_wr"><input type="submit" id="su" value="鐧惧害涓€涓? class="bg
s_btn" οnmοusedοwn="this.className='bg s_btn s_btn_h'" οnmοuseοut="this.classNam
e='bg s_btn'"></span><span class="tools"><span id="mHolder"><div id="mCon"><span
>杈撳叆娉?/span></div><ul id="mMenu"><li><a href="javascript:;" name="ime_hw">
鎵嬪啓</a></li><li><a href="javascript:;" name="ime_py">鎷奸煶</a></li><li class
="ln"></li><li><a href="javascript:;" name="ime_cl">鍏抽棴</a></li></ul></span><
span class="shouji"><strong>鎺ㄨ崘 : </strong><a href="http://w.x.baid
u.com/go/mini/8/10000020" οnmοusedοwn="return ns_c({'fm':'behs','tab':'bdbrowser
'})">鐧惧害娴忚鍣紝鎵撳紑缃戦〉蹇?绉掞紒</a></span></span></form></div><div
id="content"><div id="u1"><a href="http://news.baidu.com" name="tj_trnews" clas
s="mnav">鏂伴椈</a><a href="http://www.hao123.com" name="tj_trhao123" class="mna
v">hao123</a><a href="http://map.baidu.com" name="tj_trmap" class="mnav">鍦板浘<
/a><a href="http://v.baidu.com" name="tj_trvideo" class="mnav">瑙嗛</a><a href
="http://tieba.baidu.com" name="tj_trtieba" class="mnav">璐村惂</a><a href="http
s://passport.baidu.com/v2/?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F" name="t
j_login" id="lb" οnclick="return false;">鐧诲綍</a><a href="//www.baidu.com/gaoj
i/preferences.html" name="tj_settingicon" id="pf">璁剧疆</a><a href="//www.baidu
.com/more/" name="tj_briicon" id="bri">鏇村浜у搧</a></div><div id="m"><p id="
lg"><img src="//www.baidu.com/img/bd_logo.png" width="270" height="129"></p><p i
d="nv"><a href="http://news.baidu.com">鏂?nbsp;闂?/a>銆€<b>缃?nbsp;椤?/b>銆€
<a href="http://tieba.baidu.com">璐?nbsp;鍚?/a>銆€<a href="http://zhidao.baidu
.com">鐭?nbsp;閬?/a>銆€<a href="http://music.baidu.com">闊?nbsp;涔?/a>銆€<a
href="http://image.baidu.com">鍥?nbsp;鐗?/a>銆€<a href="http://v.baidu.com">瑙
?nbsp;棰?/a>銆€<a href="http://map.baidu.com">鍦?nbsp;鍥?/a></p><div id="fm"
><form id="form1" name="f1" action="/s" class="fm"><span class="bg s_ipt_wr"><in
put type="text" name="wd" id="kw1" maxlength="100" class="s_ipt"></span><input t
ype="hidden" name="rsv_bp" value="0"><input type=hidden name=ch value=""><input
type=hidden name=tn value="baidu"><input type=hidden name=bar value=""><input ty
pe="hidden" name="rsv_spt" value="3"><input type="hidden" name="ie" value="utf-8
"><span class="bg s_btn_wr"><input type="submit" value="鐧惧害涓€涓? id="su1" c
lass="bg s_btn" οnmοusedοwn="this.className='bg s_btn s_btn_h'" οnmοuseοut="this
.className='bg s_btn'"></span></form><span class="tools"><span id="mHolder1"><di
v id="mCon1"><span>杈撳叆娉?/span></div></span></span><ul id="mMenu1"><div clas
s="mMenu1-tip-arrow"><em></em><ins></ins></div><li><a href="javascript:;" name="
ime_hw">鎵嬪啓</a></li><li><a href="javascript:;" name="ime_py">鎷奸煶</a></li><
li class="ln"></li><li><a href="javascript:;" name="ime_cl">鍏抽棴</a></li></ul>
</div><p id="lk"><a href="http://baike.baidu.com">鐧剧</a>銆€<a href="http://w
enku.baidu.com">鏂囧簱</a>銆€<a href="http://www.hao123.com">hao123</a><span>&nb
sp;| <a href="//www.baidu.com/more/">鏇村>></a></span></p><p id="lm
"></p></div></div><div id="ftCon"><div id="ftConw"><p id="lh"><a id="seth" onCli
ck="h(this)" href="/" οnmοusedοwn="return ns_c({'fm':'behs','tab':'homepage','po
s':0})">鎶婄櫨搴﹁涓轰富椤?/a><a id="set f" href="//www.baidu.com/cache/sethel
p/index.html" οnmοusedοwn="return ns_c({'fm':'behs','tab':'favorites','pos':0})"
target="_blank">鎶婄櫨搴﹁涓轰富椤?/a><a οnmοusedοwn="return ns_c({'fm':'beh
s','tab':'tj_about'})" href="http://home.baidu.com">鍏充簬鐧惧害</a><a onmousedo
wn="return ns_c({'fm':'behs','tab':'tj_about_en'})" href="http://ir.baidu.com">A
bout Baidu</a></p><p id="cp">©2014 Baidu <a href="/duty/" name="t
j_duty">浣跨敤鐧惧害鍓嶅繀璇?/a> 浜琁CP璇?30173鍙?nbsp;<img src="http://
s1.bdstatic.com/r/www/cache/static/global/img/gs_237f015b.gif"></p></div></div><
div id="wrapper_wrapper"></div></div><div class="c-tips-container" id="c-tips-co
ntainer"></div>
<script>window.__async_strategy=2;</script>
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ar wrapper=$("#wrapper");window.index_on=function(){index_css.insertAfter("meta:
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<script>$(function(){for(i=0;i<3;i++){u($($('.s_ipt_wr')[i]),$($('.s_ipt')[i]),$
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<script type="text/javascript" src="http://s1.bdstatic.com/r/www/cache/static/ho
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<script>(function(){var _init=false;window.initIndex=function(){if(_init){return
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on() {var links = {'tj_news': ['word', 'http://news.baidu.com/ns?tn=news&cl=2&rn
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zhidao': ['word', 'http://zhidao.baidu.com/search?pn=0&rn=10&lm=0'],'tj_mp3': ['
key', 'http://music.baidu.com/search?fr=ps&ie=utf-8'],'tj_img': ['word', 'http:/
/image.baidu.com/i?ct=201326592&cl=2&nc=1&lm=-1&st=-1&tn=baiduimage&istype=2&fm=
&pv=&z=0&ie=utf-8'],'tj_video': ['word', 'http://video.baidu.com/v?ct=301989888&
s=25&ie=utf-8'],'tj_map': ['wd', 'http://map.baidu.com/?newmap=1&ie=utf-8&s=s'],
'tj_baike': ['word', 'http://baike.baidu.com/search/word?pic=1&sug=1&enc=utf8'],
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</body></html>
如上就是百度服务器返回的信息， 挺有意思的， OK, 先玩到这里， 准备睡觉。