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I'm on Ubuntu 14.04.3 LTS and running lua-expat 1.2.0-6 the newest version for Trusty. Prosody throws this error:

The version of LuaExpat on your system does not support stanza size limits, which may leave servers on untrusted networks (e.g. the internet) vulnerable to denial-of-service attacks. You should upgrade to LuaExpat 1.3.0 or higher as soon as possible. See http://prosody.im/doc/depends#luaexpat for more information.

How can I / What is the best way to install a newer version of lua-expat?

2 Answers 2

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Look at this this blog post …

There you will find the answer: install luarocks :)

Short:

# apt-get install luarocks libexpat-dev
# luarocks install luaexpat
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The easiest way is probably: Use a ppa (https://launchpad.net/ubuntu/+ppas), e.g. https://launchpad.net/~patrick-georgi/+archive/ubuntu/ppa which provides lua-expat 1.3.0-0.1

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  • Note that this PPA is created by user Patrick Georgi, who has 0 karma and is otherwise inactive in on Launchpad.
    – Paul
    Dec 30, 2015 at 20:31

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