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From "Robert Andersson" <>
Subject Re: [users@httpd] Server stops working
Date Wed, 09 Oct 2002 05:39:45 GMT
Rupert Young wrote:
> Can anyone tell me what these log messages mean ?
> Looking at my logs the last messages I get are
> [Mon Oct 07 21:49:50 2002] [error] [client] client sent
> HTTP/1.1 request without hostname (see RFC2616 section 14.23): /
> in the error log and

Have you checked the RFC then?
Go here:, lots of interesting info.

In short, HTTP 1.1 require that the request contains a Host: header with the

> - - [07/Oct/2002:21:49:50 +0100] "GET / HTTP/1.1" 400 377
> in the access log.

Someone or something did a HTTP 1.1 request to your IP, without supplying
the Host-header. It is needed by Apache to deside which configuration to
use, if you're using virtual hosts. This probably is a manual entered query,
that was too lazy to write the Host-header, or perhaps some poorly written

Robert Andersson

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