From: Sam Joseph <sam@...>
Date: 2006-02-08T23:18:28+09:00
Subject: Re: odd http header corruption

Hi Eric,

Eric Hodel wrote:

> On Feb 6, 2006, at 1:16 AM, Sam Joseph wrote:
>
>> Hi there,
>>
>> I can't tell if this is a problem with the ruby cgi library or with
>> rails action pack (no response from the rails list so far), but I  
>> get an
>> occasional error in the http headers from rails like this:
>>
>> HTTP/1.x 200 OK
>> Date: Thu, 02 Feb 2006 20:56:03 GMT
>> Server: Apache/2.0.54 (Debian GNU/Linux) PHP/4.3.10-16 mod_ruby/1.2.4
>> Ruby/1.8.4(2005-12-24)
>> #<#<Class: 0x40b8e99c>:0x40b8e8d4>Content-Type: text/html
>> Cache-Control: no-cache
>
> You're adding a metaclass thingy to your headers.

Indeed - not intentionally I assure you :-)

>
>> Some kind of object data is getting dumped in front of the Content- 
>> Type,
>> which screws up how some browsers display the page.
>>
>> Setting Content-Type explicitly in the controller doesn't seem to  help,
>> and so far I have been unable to detect what causes this, or why it
>> happens under some circumstances and not others - I am posting this  
>> here
>> in case anybody has seen something similar, or has ideas about  possible
>> causes.
>
>
> Does it go away if you take that out?

No

>
> I'm going to blame your code or Rails on this one.

Or some interaction of the two :-)  The thing I'm really keen to work 
out is how the actioncontroller cgi_process.rb generates the output 
before the odd thingy, i.e.

HTTP/1.x 200 OK
Date: Thu, 02 Feb 2006 20:56:03 GMT
Server: Apache/2.0.54 (Debian GNU/Linux) PHP/4.3.10-16

Since placing a newline before any output from CgiReponse.out places 
that new line after these three lines, so where are they generated?  I 
can't work it out.

Many thanks.

CHEERS> SAM