Lighttpd - HTTPStates

第一次接触graphviz，看起来挺简单方便的，以后画状态图之类的可以考虑一下。

把下面代码保存为HTTPStates.dot

#!graphvizdigraph state {    edge [color=green];    connect -> reqstart -> read -> reqend -> handlereq -> respstart -> write -> respend -> connect;    edge [color=grey];    reqend -> readpost -> handlereq [ label="POST" ];    edge [ color=blue];    respend -> reqstart [ label="keep-alive" ];    edge [ color=lightblue];    handlereq -> handlereq [ label="sub-request" ];    edge [style=dashed, color=red];    error -> close -> connect;    error -> connect;    handlereq -> error;    read -> error;    readpost -> error;    write -> error;    connect [shape=box];}

编译一下：
$dot -Tpng HTTPStates.dot -o HTTPStats.png

就可以得到Lighttpd的状态转换图了。