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Re: lynx-dev Redirection in E-mail headers?
From: |
Klaus Weide |
Subject: |
Re: lynx-dev Redirection in E-mail headers? |
Date: |
Tue, 14 Dec 1999 03:20:11 -0600 (CST) |
On Mon, 13 Dec 1999 address@hidden wrote:
> Hello, Lyncei,
>
> Is there a convention for formatting an E-Mail message so that
> when it is opened it launches a viewer and displays a page not
> contained in the message body? Logically, this might be
> as simple as a header:
>
> Location: http://host/path
>
> and a dummy body. But what of "Content-type:"?
Are you talking about tweaking Lynx to do this, or in general?
If the first -
You can trick Lynx into treating a file with a message (mail headers +
body) somewhat like an HTTP response. My patch for redirection handling,
which isn't yet in the latest dev.16 code, would make it easy to add
following of a Location. Let me know if you want details. But this is
of course completely non-standard.
If the second -
There is no standard for *automatically* following a Location header in
mail. A mail client better not do that! Good luck with trojan mail...
But MIME has something more or less equivalent - see the MIME RFCs for
"message/external-body".
In HTTP, the Content-type (and probably all other Content-* headers)
is irrelevant, if the message is a redirection (according to the HTTP
response code) AND there is a Location header AND the client is following
the redirection. Content-type in a redirection message comes only into
play if the clients doesn't follow the redirection (it is always free to
do that - see Lynx's -noredir flag) and decides to display the contents
instead.
Klaus