[PATCH] mod_proxy handling of chunked requests

[Mathias Herberts]

The included quick patch should allow mod_proxy to pass chunked requests
as-is to origin servers.

The modification in proxy_http.c checks read_chunked to decide whether
or not to strip the Transfer-Encoding header.

Feedback appreciated,

Mathias.

[Mathias Herberts]

Here is my second shot of a patch solving the issue of requests sent
using 'Transfer-Encoding: chunked' and handled by mod_proxy in Apache
1.3.27. Basically it changes mod_proxy behavior from
REQUEST_CHUNKED_ERROR to REQUEST_CHUNKED_PASS, meaning requests sent
using chunked transfer encoding will be passed as is to the origin server.

This patch is minimal and does not modify the behavior of mod_proxy for
non chunked requests, it issues an additional 'Transfer-Encoding:
chunked' when the request used one.

Please provide any feedback.

Mathias.

[Alex Rousskov]

Mathias,

We have not tested Apache 1.3.27, but recent 2.x versions seem
to pass all our test cases related to chunked requests in a forward
proxy environment. If you can upgrade, it may solve your problem (but
may trigger other bugs).

I am sorry that I cannot help you directly, but I am excited
to see another real-world use of chunked requests. We have been
working with many HTTP implementations that cannot handle those, and
it always helps to have more real-world demand when you argue for
HTTP/1.1 compliance. I am not an Apache developer, but if you think
that testing your patch will help its inclusion in 1.x code branch,
please contact me to arrange for a free test.

Good luck,

Alex.
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Post by Mathias Herberts
Here is my second shot of a patch solving the issue of requests sent
using 'Transfer-Encoding: chunked' and handled by mod_proxy in Apache
1.3.27. Basically it changes mod_proxy behavior from
REQUEST_CHUNKED_ERROR to REQUEST_CHUNKED_PASS, meaning requests sent
using chunked transfer encoding will be passed as is to the origin server.
This patch is minimal and does not modify the behavior of mod_proxy for
chunked' when the request used one.
Please provide any feedback.
Mathias.
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