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Re: HTTP 1.0

Maxim Dounin
February 13, 2019 02:06PM
Hello!

On Wed, Feb 13, 2019 at 12:12:15PM -0600, Dusty Campbell wrote:

> Thanks for the help.
>
> > There is no way to force HTTP/1.0. You can, however, disable
> > various HTTP/1.1-specific mechanisms, including keepalive and
> > chunked transfer encoding, see here:
> >
> > http://nginx.org/r/keepalive_timeout
> > http://nginx.org/r/chunked_transfer_encoding
> >
>
> It appears that these were the directives I needed. Pending more
> testing it seems to be working now.
>
> > You may want to be more specific on what you are trying to do.
>
> What I was trying to achieve was RTSP-over-HTTP tunneling.
> https://opensource.apple.com/source/QuickTimeStreamingServer/QuickTimeStreamingServer-412.42/Documentation/RTSP_Over_HTTP.pdf

Well, I wouldn't expect this to depend on HTTP/1.0 being used, as
well as keepalive connections and/or chunked transfer encoding
(unless the client is also buggy and announces HTTP/1.1 support
without actually implementing HTTP/1.1).

But clearly there will be problems with this tunneling, as it goes
far beyond what is guaranteed by the HTTP standard. The most
serious problem is an assumption that request and response bodies
are streams. They are not. And, for example, it is not
guaranteed that a proxy will start sending a POST request to the
upstream server before it receives the full request body (which is
not going to happen).

With nginx, this is certainly not going to work by default, but
may work with proxy_buffering and proxy_request_buffering
disabled, see here:

http://nginx.org/r/proxy_buffering
http://nginx.org/r/proxy_request_buffering

Also, the pdf in question suggests that Content-Length in requests
is expected to be ignored by proxies. It is not in the modern
world, and if the client relies on this, it is not going to work
at all. If it is the case, the only option I can recommend would
be to use stream proxy instead, see here:

http://nginx.org/en/docs/stream/ngx_stream_core_module.html

--
Maxim Dounin
http://mdounin.ru/
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Subject Author Posted

HTTP 1.0

Dusty Campbell February 12, 2019 12:04PM

Re: HTTP 1.0

Maxim Dounin February 12, 2019 02:38PM

Re: HTTP 1.0

Dusty Campbell February 13, 2019 01:14PM

Re: HTTP 1.0

Maxim Dounin February 13, 2019 02:06PM



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