Re: RFC2616 question for proxy

[Graham Leggett <mi...@sharp.fm>]

Chuck Murcko wrote:

> RFC2616 states that proxies must remove any transfer-coding (see end of
> message for quoted section). The way I read this is that updating
> Content-Length after dechunking an origin server response body is a hint
> that it'll be needed for sending the body back as response to a non-HTTP
> 1.1 client.
> 
> So, in this case, an HTTP 1.1 proxy will need to buffer the entire
> chunked origin server response body before sending it to a non-HTTP 1.1
> client with a Content-Length header.

In theory (as I understand it) no.

If you are receiving chunked bytes from the backend server, there won't
be a Content-Length.

The dechunk filter will turn the incoming bytes into a simple byte
stream of unknown length, and pass these bytes up the filter chain until
the bytes run out.

A filter at the top will notice there is no Content-Length, and instead
of adding one, will chunk the output - and the chunked encoding will be
re-added again at the end.

Thus - no problem (Unless I misunderstand this)...

Regards,
Graham
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