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[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.] ** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to zlib in Ubuntu. https://bugs.launchpad.net/bugs/1692870 Title: gzip compression broken in UniFi (built-in tomcat) Status in zlib package in Ubuntu: New Bug description: [Impact] Since I upgraded from Ubuntu 16.10 to 17.04, my Guest portal for my UniFi system was broken (https://www.ubnt.com/download/unifi/). Curl gave me the following response: # curl -vvvv --compress localhost:8880/guest/s/default/ * Trying ::1... * TCP_NODELAY set * Connected to localhost (::1) port 8880 (#0) > GET /guest/s/default/ HTTP/1.1 > Host: localhost:8880 > User-Agent: curl/7.52.1 > Accept: */* > Accept-Encoding: deflate, gzip > < HTTP/1.1 200 OK < Server: Apache-Coyote/1.1 < Content-Type: text/html;charset=utf-8 < Transfer-Encoding: chunked < Content-Encoding: gzip < Vary: Accept-Encoding < Date: Tue, 23 May 2017 11:19:22 GMT < * Error while processing content unencoding: invalid code lengths set * Failed writing data * Curl_http_done: called premature == 1 * Closing connection 0 curl: (23) Error while processing content unencoding: invalid code lengths set [Test Case] Just install a fresh Ubuntu 17.04 with UniFi controller. And the Guest Portal is broken. See above. When disabling compression in curl, it works fine. After some debugging, I found out that downgrading to zlib 1:1.2.8 .dfsg-2ubuntu5.1 was a workaround. Now after digging into the issue some more, I found the following upstream patch (unreleased version), fixes the issue: https://github.com/madler/zlib/commit/f9694097dd69354b03cb8af959094c7f260db0a1 [Regression Potential] Everybody upgrading from 16.10 (or previous) to 17.04 will be affected by this. The patch is taken from upstream, so this isn't a change we will need to keep different from upstream. I've already created a new package (see debdiff) that fixes the issue. [Other Info] Now as the UniFi controller is just some Tomcat, which relies on Java (OpenJDK), which uses zlib for its built-in Compression/Decompression. I guess even more java related tools can be broken. But I didn't have time to test this. At least some other people using UniFi have the same issue, see: https://community.ubnt.com/t5/UniFi-Wireless/ERR-CONTENT-DECODING-FAILED-on-guest-portal-customisation/td-p/1903419 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zlib/+bug/1692870/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
