Re: POST message
Re: POST message
- Subject: Re: POST message
- From: Frederick Cheung <email@hidden>
- Date: Sat, 29 Oct 2005 20:10:29 +0100
On 10/27/05, Jan E. Schotsman <email@hidden> wrote:
>
> On 26-okt-05, at 20:14, Frederick Cheung wrote:
>
> > You might need to have an If-Range header, some servers report it.
> > Does the response have an Accept-Range header in it. If it has
> > Accept-Range: bytes then the server probably supports it, if it has
> > Accept-Range: none then it almost certainly doesn't and if the header
> > is not there anything could be true
>
> No Accept-Range header, I am afraid.
>
> After reading the first bytes I called this:
>
> response = CFReadStreamCopyProperty( readStream,
> kCFStreamPropertyHTTPResponseHeader );
> headerValue = CFHTTPMessageCopyHeaderFieldValue( response,
> CFSTR("Accept-Range") );
>
> and headerValue was nil.
>
>
> What is the value for an If-Range header?
>
> CFHTTPMessageSetHeaderFieldValue( request, CFSTR("If-Range"), ? );
>
> Does it mean "If you support range then here is the range I want" or
> "If you have sent this range please send the next indicated range"?
>
No, it means "use my range header if the file matches this header".
The aim is to avoid having a corrupt file because the file changed in
between your 2 requests.
The syntax is:
If-Range = "If-Range" ":" ( entity-tag | HTTP-date )
Fred
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