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Re: HTTP/1.1 502 Proxy Error - Resolution

Hi Jon,

I'm a bit stunned by this development.  HTTP servers/clients are able to 
send any headers they want to -- and when an agent doesn't understand 
the headers, they typically ignore them.  For example, I could make up a 
header named "X-Scott-Klement-Is-Cool: Yes" and send it, and it 
shouldn't matter to anyone.  The servers and proxies that receive the 
header won't understand it, of course -- but it wouldn't break anything, 
they'd simply ignore it.

So while I agree that many older tools don't understand the Expect: 
header, I don't see why that would result in a proxy error.

Jon S wrote:
>    I have this figured out and thought I'd post the resolution in case
>    anyone else came across this. Per my vendor:
>    RFC 2616:
>            Many older HTTP/1.0 and HTTP/1.1 applications do not
>    understand the
>    Expect header.
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