I tried to simulate the issue with Tomcat 7.0.77 (which is the version UniFi uses), but I was unable to simulate this on Ubuntu 17.04.
The 'use-dso' patch that I removed in the debdiff, just point to an empty file. So no use that file is in the deb. Thanks ** Description changed: - [Impact] + [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. + - Install UniFi controller on Ubuntu 17.04 (http://dl.ubnt.com/unifi/5.4.16/unifi_sysvinit_all.deb) + - Go to https://<ip>:8443/manage/site/default/settings/guestcontrol + - Or do: curl -vvvv --compress <ip>:8880/guest/s/default/ + + When compression is enabled, its broken. 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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1692870 Title: gzip compression broken in UniFi (built-in tomcat) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zlib/+bug/1692870/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
