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epriestley 5e3754828f Fix handling of gzip in VCS responses 
Summary:
Fixes T10264. I'm reasonably confident that this is the chain of events here:

First, prior to 8269fd6e, we would ignore "Content-Encoding" when reading inbound bodies. So if a request was gzipped, we would read a gzipped body, then give `git-http-backend` a gzipped body with "Content-Encoding: gzip". Everything matched normally, so that was fine, except in the cluster.

In the cluster, we'd accept "gzip + compressed body" and proxy it, but not tell cURL that it was already compressed. cURL would think it was raw data, so it would arrive on the repository host with a compressed body but no "Content-Encoding: gzip". Then we'd hand it to git in the same form. This caused the issue in 8269fd6e: handing it compressed data, but no "this is compressed" header.

To fix this, I made us decompress the encoding when we read the body, so the cluster now proxies raw data instead of proxying gzipped data. This fixed the issue in the cluster, but created a new issue on non-cluster hosts. The new issue is that we accept "gzip + compressed body" and decompress the body, but then pass the //original// header to `git-http-backend`. So now we have the opposite problem from what we originally had: a "gzip" header, but a raw body.

To fix //this//, we could do two things:

  - Revert 8269fd6e, then change the proxy request to preserve "Content-Encoding" instead.
  - Stop telling `git-http-backend` that we're handing it compressed data when we're handing it raw data.

I did the latter here because it's an easier change to make and test, we'll need to interact with the raw data later anyway, to implement repository virtualization in connection with T8238.

Test Plan: See T10264 for users confirming this fix.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10264

Differential Revision: https://secure.phabricator.com/D15258
2016-02-12 08:08:58 -08:00
bin Move diff extraction from commits to a separate test with a CLI command 2016-01-08 09:22:37 -08:00
conf Mark some strings for translation 2015-06-09 23:06:52 +10:00
externals Swap S3 to first-party client 2016-01-10 07:55:27 -08:00
resources Allow workboard sorting and filtering to be saved as defaults 2016-02-12 07:47:23 -08:00
scripts Fix method call on possible null 2016-02-10 12:44:52 -08:00
src Fix handling of gzip in VCS responses 2016-02-12 08:08:58 -08:00
support Swap charts from gRaphael to D3 2016-02-01 10:36:59 -08:00
webroot Minor CSS touches to workboard quest experience 2016-02-11 17:10:43 -08:00
.arcconfig Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.arclint Apply phutil XHPAST linter standard 2015-11-13 07:09:12 +11:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig
.gitignore Add custom Cows and Figlet directories to .gitignore 2015-10-08 20:23:05 -07:00
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README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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