[Catalyst] UTF-16 surrogate message when writing binary data(image)

Ash Berlin ash_cpan at firemirror.com
Fri May 23 16:21:35 BST 2008


You're going to have to paste some code I've been happily serving up  
PDFs (which has all sorts of binary data in it) fine.

1) How are you serving the file up?
2) What headers are you setting?

-ash

On 23 May 2008, at 16:00, Martin Ellison wrote:

> Another case... the surrogate is d862 = 55394 but the image size is  
> 45296, so it is not looking consistent. So perhaps the 'surrogate'  
> data is just random bytes from the JPEG.
>
> 2008/5/23 Martin Ellison <m.e at acm.org>:
> I've found a case
> ...stderr: UTF-16 surrogate 0xdb71 at /usr/lib/perl/5.8/IO/Handle.pm  
> line 199...
> FastCGI: ... [info] picture size is 55966
>
> 55966 = da9e
> 56177 = db71
>
> So almost the same. Perhaps I have 100 bytes of headers.
>
>
> 2008/5/20 Martin Ellison <m.e at acm.org>:
>
> The Content-Type is set to 'UTF-8' for most of my pages, but, in  
> this case, it is image/jpeg and the content disposition is set to  
> inline.
>
> 2008/5/19 Ash Berlin <ash_cpan at firemirror.com>:
>
> On 19 May 2008, at 12:34, Martin Ellison wrote:
>
> I've finally had the opportunity to test my code a bit more. The  
> $pic_image is a string of some kind and not a file handle.
>
> Also I tried doing binmode STDOUT but this fails --  the binmode  
> call returns false.
>
> There could be any binary data in my string, so any UTF-8-bad byte  
> pairs are definitely possible. I would think the solution is to  
> inform Catalyst that the data is not UTF-8 but binary. In the normal  
> case of writing to a file, one can use binmode to tell perl that the  
> data is binary but that does not work here.
>
> Is this a gap in the Catalyst API?
>
> Are you by any chance setting a header to something with UTF8 content?
>
> I had a problem similar to this that was caused by me setting a  
> Content-Disposition header to something including unicode.
>
> -ash
>
>
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>
>
>
> -- 
> Regards,
> Martin
> (m.e at acm.org)
> IT: http://methodsupport.com Personal: http://thereisnoend.org
>
>
>
> -- 
> Regards,
> Martin
> (m.e at acm.org)
> IT: http://methodsupport.com Personal: http://thereisnoend.org
>
>
>
> -- 
> Regards,
> Martin
> (m.e at acm.org)
> IT: http://methodsupport.com Personal: http://thereisnoend.org  
> _______________________________________________
> List: Catalyst at lists.scsys.co.uk
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