Wapp

  +  **REQUEST\_METHOD**  
     "GET" or "HEAD" or "POST"

  +  **REQUEST\_URI**  
     The URL for the inbound request, without the initial "http://" or
     "https://" and without the HTTP\_HOST.  This variable is the same as
     the concatenation of $SCRIPT\_NAME and $PATH\_INFO if $QUERY\_STRING
     is blank, or $SCRIPT\NAME/$PATH\_INFO?$QUERY\_STRING if $QUERY\_STRING
     is non-empty.  $REQUEST\_URI is the second field of the first line of
     the HTTP request.

  +  **SCRIPT\_FILENAME**  
     The full pathname on the server for the Wapp script.  This parameter
     is usually undefined for SCGI.

  +  **SCRIPT\_NAME**  
     In CGI mode, this is the name of the CGI script in the URL.  In other

  +  **PATH\_TAIL** → "extra/path"

The first five elements of the example above, HTTP\_HOST through
QUERY\_STRING, are standard CGI.  The final four elements are Wapp
extensions.  The following is the same information show in a diagram:

>
                                    REQUEST_URI
                       __________________|_________________
                      /                                    \
    http://example.com/cgi-bin/script/method/extra/path?q1=5
           \_________/\_____________/\________________/ \__/
                |            |               |           |
            HTTP_HOST   SCRIPT_NAME      PATH_INFO       `-- QUERY_STRING







>
    http://example.com/cgi-bin/script/method/extra/path?q1=5
    \_______________________________/ \____/ \________/
                    |                    |        | 
                BASE_URL           PATH_HEAD   PATH_TAIL