POST /calc.cgi HTTP/1.1
 Host: pitecan.com
 User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; ja-JP-mac; rv:1.9.0.8) Gecko/2009032608 Firefox/3.0.8
 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
 Accept-Language: ja,en-us;q=0.7,en;q=0.3
 Accept-Encoding: gzip,deflate
 Accept-Charset: UTF-8,*
 Keep-Alive: 300
 Connection: keep-alive
 Content-Type: application/x-www-form-urlencoded
 Content-Length: 9
 exp=3%2B4