prosody
b8eec163a823
plugins/mod_compression.lua

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plugins/mod_compression.lua @ 1669:b8eec163a823

Commit initial version of mod_compression.
author Tobias Markmann <tm@ayena.de>
date Wed, 12 Aug 2009 20:05:05 +0200
child 1670:23bb280c5eac
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1668:a276d379e00a 1669:b8eec163a823
1 -- Prosody IM
2 -- Copyright (C) 2009 Tobias Markmann
3 --
4 -- This project is MIT/X11 licensed. Please see the
5 -- COPYING file in the source package for more information.
6 --
7
8 local st = require "util.stanza";
9 local print = print
10
11 local xmlns_compression_feature = "http://jabber.org/features/compress"
12 local xmlns_compression_protocol = "http://jabber.org/protocol/compress"
13 local compression_stream_feature = st.stanza("compression", {xmlns=xmlns_compression_feature}):tag("method"):text("zlib"):up();
14
15
16 module:add_event_hook("stream-features",
17 function (session, features)
18 features:add_child(compression_stream_feature);
19 end
20 );
21
22 module:add_handler("c2s_unauthed", "compress", xmlns_compression_protocol,
23 function(session, stanza)
24 -- checking if the compression method is supported
25 local method = stanza:child_with_name("method")[1];
26 if method == "zlib" then
27 session.log("info", method.." compression selected.");
28 session.send(st.stanza("compressed", {xmlns=xmlns_compression_protocol}));
29 else
30 session.log("info", method.." compression selected. But we don't support it.");
31 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
32 session.send(error_st);
33 end
34 end
35 );