for HTTPServer, HTTPRequest, HTTPResponse …

General.dup.update(
:Port           => 80,
:RequestTimeout => 30,
:HTTPVersion    => HTTPVersion.new("1.1"),
:AccessLog      => nil,
:MimeTypes      => HTTPUtils::DefaultMimeTypes,
:DirectoryIndex => ["index.html","index.htm","index.cgi","index.rhtml"],
:DocumentRoot   => nil,
:DocumentRootOptions => { :FancyIndexing => true },
:RequestHandler => nil,
:RequestCallback => nil,  # alias of :RequestHandler
:ServerAlias    => nil,

# for HTTPProxyServer
:ProxyAuthProc  => nil,
:ProxyContentHandler => nil,
:ProxyVia       => true,
:ProxyTimeout   => true,
:ProxyURI       => nil,

:CGIInterpreter => nil,
:CGIPathEnv     => nil,

# workaround: if Request-URIs contain 8bit chars,
# they should be escaped before calling of URI::parse().
:Escape8bitURI  => false