事例学习开发WEBSERVER服务器（一）

我想有很多朋友和我一样，想要了解APACHE NGINX的工作原理，最终能独立写一个服务器。我对C语言开发几乎一窍不通，看了网上的很多文章，都是先讲SOCKET编程等等几百页之后，才能讲到这里，学习起来很痛苦，经常思考是否可以另外一种方式，倒叙的方式让其他的人学习起来不那么痛苦。好吧废话少说，咱们开始吧~

今天要做的工作目标：配置环境，浏览源代码。

一、下载WEBSERVER程序（下载）

二、安装。make

三、启动服务器端服务。./shttpd

[root@sysadmin webserver]# ./shttpd 
sHTTPD ListenPort: 8062
       MaxClient: 4
       DocumentRoot: /usr/local/var/www/
       DefaultFile:index.html
       CGIRoot: 
       DefaultFile:index.html
       TimeOut:3
       ConfigFile:/etc/sHTTPd.conf
==>Worker_ScheduleRun
==>Worker_Init
==>Worker_Add
==>worker
<==Worker_Add
==>Worker_Add
==>worker
<==Worker_Add
<==Worker_Init

四、测试。curl '127.0.0.1:8062/index.html'

[root@sysadmin study]# curl '127.0.0.1:8062/index.html'
test

五、SERVER显示

client comming
Do task
==>do_work
select retval:1
Read 166 bytes,'GET /index.html HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: 127.0.0.1:8062
Accept: */*

'
==>Request_Parse
==>Request_HeaderParse
<==Request_HeaderParse
URI:'/index.html',patch:'/usr/local/var/www///index.html'
<==Request_Parse
==>Request_Handle
==>Method_Do
==>Method_DoGet
==>Mine_Type
uri:/index.html,len:11,ext is html
found it, ext is html
<==Mine_Type
n:-1
content length:5, status:206
<==Method_DoGet
<==Method_Do
echo header:HTTP/1.1 206 Partial Content
Date: Thu, 04 Apr 2013 13:45:15 GMT
Last-Modified: Mon, 01 Apr 2013 21:08:47 GMT
Etag: "515986df.5"
Content-Type: text/html
Content-Length: 5
Accept-Ranges: bytes
Content-Range: bytes 0-4/5

, write to client 229 bytes, status:206
response len:16384, content length:5
read 5 bytes,write 5 bytes
<==Request_Handle
select retval:1
Read 0 bytes,''
<==do_work

六、先到这里！剩下的就是有空的时候看看程序，体会一下结果是什么出来的。