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CGI environment vars for browser ID, etc.

From: Ann Lynnworth <ann@sonic.net>
Date: Fri, 5 May 1995 15:54:07 -0700
Message-Id: <199505052254.PAA30327@sonic.net>
To: www-talk@www10.w3.org
Cc: eshyjka@dc.isx.com
To answer Elisabeth's question about identifying the browser --

A CGI program has access to a great number of environment variables which
give you all sorts of information about what's happening at run time.  This
is not available to plain HTML; you need to have a CGI program.

But if you do, here are some of the benefits:

' [CGI]                <== The standard CGI variables
' CGI Version=         The version of CGI spoken by the server
' Request Protocol=    The server's info protocol (e.g. HTTP/1.0)
' Request Method=      The method specified in the request (e.g., "GET")
' Executable Path=     Physical pathname of the back-end (this program)
' Logical Path=        Extra path info in logical space
' Physical Path=       Extra path info in local physical space
' Query String=        String following the "?" in the request URL
' Content Type=        MIME content type of info supplied with request
' Content Length=      Length, bytes, of info supplied with request
' Server Software=     Version/revision of the info (HTTP) server
' Server Name=         Server's network hostname (or alias from config)
' Server Port=         Server's network port number
' Server Admin=        E-Mail address of server's admin. (config)
' Referer=             URL of referring document (HTTP/1.0 draft 12/94)
' From=                E-Mail of client user  (HTTP/1.0 draft 12/94)
' Remote Host=         Remote client's network hostname
' Remote Address=      Remote client's network address
' Authenticated Username=Username if present in request
' Authenticated Password=Password if present in request
' Authentication Method=Method used for authentication (e.g., "Basic")
' Authentication Realm=Name of realm for users/groups

If you're developing on a Windows NT platform, you might check out
http://website.ora.com for more information.  O'Reilly's server makes it
very easy to get at these facts.

Hope this helps,

-Ann
*******************************************************
Ann Lynnworth                             ann@sonic.net
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Software Development Since 1983: Paradox, C, Delphi, CGI....
*******************************************************
Received on Friday, 5 May 1995 18:49:32 UTC

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