[users@httpd] proxy and chunk mode

["david micheneau" <dmicheneau@xxxxxxxxxxxx>]

Hi,

 

I’ve a trouble with the chunk mode connection pass through a proxy.

It seems that the content-length is not forwarded when you use chunk mode via a proxy mode: CHANGE-LOG in :

*) SECURITY: CAN-2005-2088 (cve.mitre.org)

     proxy: Correctly handle the Transfer-Encoding and Content-Length

     headers.  Discard the request Content-Length whenever T-E: chunked

     is used, always passing one of either C-L or T-E: chunked whenever 

     the request includes a request body.  Resolves an entire class of

     proxy HTTP Request Splitting/Spoofing attacks.  [William Rowe]

 

But now, how we treat a http request, if we don’t know the content length via proxy mode ?

 

May be a noob question but: Why Apache doesn’t calculate the content-length himself before to send via the proxy handler ?

 

 

David.