mod_proxy (rev proxy): Don"t set Content-Type if remote server
am 28.01.2010 02:57:03 von Ray Van DolsonI'm trying to troubleshoot a Nokia E71x having problems connecting to
our OWA server via an Apache 2.2.13 reverse proxy.
As part of the troubleshooting, I noticed that in response to a Sync
request (all done via HTTP/1.1 btw), we recieve a response from the OWA
server with the following HTTP characteristics:
HTTP/1.1 200 OK
Content-Encoding: gzip
Vary: Accept-Encoding
Transfer-Encoding: chunked
However, when Apache transmits this back to the client, the response
looks like this:
HTTP/1.1 200 OK
Date: Thu, 28 Jan 2010 01:18:30 GMT
Content-Encoding: gzip
Vary: Accept-Encoding
Transfer-Encoding: chunked
Content-Type: text/plain; charset=UTF-8
I have tested with and without the Apache server in the middle, and
only get errors on the Nokia with the proxy in place. The above packet
is the only difference I can detect between the two.
(The Nokia device doesn't appear to sync at all if I force HTTP/1.0 as
it always tranmits an "Expect: 100-continue" header and this elicits a
"go away" response from the Apache server as this isn't valid for
HTTP/1.0 -- basically we're dealing with a broken HTTP client on the
Nokia)
I'd like to tell Apache to *not* insert the extra headers if they're
not in the packet coming from the IIS server... I don't care so much
about the Date header, but I really want to strip out the Content-Type
header....
Obviously I could do something like the following:
ProxyPass https://owa.esri.com/Microsoft-Server-ActiveSync
ProxyPassReverse https://owa.esri.com/Microsoft-Server-ActiveSync
Header unset Content-Type
However, this strips out the Content-Type for *all* requests. I just
want to leave the response packet alone and not add the Content-Type
header if it's missing.
I don't see a way to base a Header unset on a environment variable
(apparently this is only for the "set", "echo" keywords).
I might be able to limit the scope of the Header unset by doing some
mod_rewrite trickery if I can track down the exact type of ActiveSync
request that triggers this particular response..... I'd rather have a
more general solution though.
Any ideas?
Thanks,
Ray
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