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> -----Original Message-----
> From: bounce-42904377-109411...@lists.wisc.edu [mailto:bounce-42904377-
> 109411...@lists.wisc.edu] On Behalf Of Eric Covener
> Sent: 08 October 2015 13:23
> To: users@httpd.apache.org
> Cc: mod-auth-cas-...@lists.wisc.edu
> Subject: Re:[mod-auth-cas-dev] [users@httpd] mod_auth_cas confused by
> POST body split across brigades in input filter.
>
> On Thu, Oct 8, 2015 at 7:34 AM, Mark Blackman <mark.black...@db.com>
> wrote:
> > I'd have expected a single call with 476 bytes, can anyone give me
> some clues why the filter is called twice for a single request? Is
> mod_auth_cas meant to assume the input filter can be called more than
> once per request?
>
>
> I have seen it recently somewhere else, in CGI context where the CGI
> was not looping over stdin.
>
> I don't recall the exact cause, but it's something like another module
> peeking to see if data is ready ion the connection. The 1 byte it
> reads is consumed and set aside, but weaved back in to the next real
> read.    It's fair to say any input filter has to be prepared to be
> called multiple times.

Thanks for confirming. So that implies the mod_auth_cas filter code is making 
an inappropriate and rather fundamental assumption for my case.

I suspect that mod_ssl is the module that is peeking into the input stream and 
triggering a break-up of the inbound request.

Cheers,
Mark


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