Re: [naviserver-devel] Encoding

[Vlad S. <vl...@cr...>]

I think the only solution here will be to use Chunked-Encoding to output 
encoded content, in this case Content-Length should be removed fromthe 
headers.

Ns_ConnWriteVChars handles that, so it shoudl be chnaged i guess.

Bernd Eidenschink wrote:
> Am Mittwoch, 12. Juli 2006 15:23 schrieb Bernd Eidenschink:
>> it looks like the mechanism of changing the encoding works as expected, but
>> the computation of the correct contentlength not.
> 
> ok. I think this is going on:
> 
> 1. NsTclReturnObjCmd
> If ns_return is called _without_ -binary switch, Ns_ConnReturnCharData is 
> called. The length is computed from the UTF-8 representation.
> 
> 2. Ns_ConnReturnCharData
> calls
> 
> 3. ReturnCharData
> Knows what output encoding to use. If not UTF-8, it will call
> Ns_WriteCharConn
> 
> ...BUT BEFORE...
> 
> 4.
> Ns_ConnSetRequiredHeaders
> calls Ns_ConnSetLengthHeader
> (Set the Content-Length output header)
> 
> for
> 
> 5.
> Ns_ConnQueueHeaders
> calls NS_ConnConstructHeaders
> where
> "Update the response length value directly from the header to be sent, i.e., 
> don't trust programmers"
> 
> So the content-length is set.
> 
> NOW:
> 
> 7. Ns_WriteCharConn is called, calls
> Ns_ConnWriteChars
> that with the help of Ns_ConnWriteVChars encodes
> with the help of "Tcl_UtfToExternal" to the final encoding.
> 
> I can be fundamentally wrong, but it seems to me like the 
> whatever-it-will-become final encoding length should be computed earlier...
> 
> What do you think?
> 
> Bernd.
> 
> 
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-- 
Vlad Seryakov
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vl...@cr...
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