prosody
0b0fe49e5251
plugins/mod_compression.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

plugins/mod_compression.lua @ 2280:0b0fe49e5251

Enable one way stream compression on s2s links.
author Tobias Markmann <tm@ayena.de>
date Sun, 29 Nov 2009 21:32:39 +0100
parent 2279:49bc4c7bdef8
child 2282:6f54dac3ec2d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
1 -- Prosody IM
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
2 -- Copyright (C) 2009 Tobias Markmann
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
3 --
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
4 -- This project is MIT/X11 licensed. Please see the
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
5 -- COPYING file in the source package for more information.
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
6 --
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
7
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
8 local st = require "util.stanza";
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
9 local zlib = require "zlib";
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
10 local pcall = pcall;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
11
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
12 local xmlns_compression_feature = "http://jabber.org/features/compress"
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
13 local xmlns_compression_protocol = "http://jabber.org/protocol/compress"
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
14 local xmlns_stream = "http://etherx.jabber.org/streams";
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
15 local compression_stream_feature = st.stanza("compression", {xmlns=xmlns_compression_feature}):tag("method"):text("zlib"):up();
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
16
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
17 local compression_level = module:get_option("compression_level");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
18 -- if not defined assume admin wants best compression
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
19 if compression_level == nil then compression_level = 9 end;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
20
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
21
1676
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
22 compression_level = tonumber(compression_level);
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
23 if not compression_level or compression_level < 1 or compression_level > 9 then
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
24 module:log("warn", "Invalid compression level in config: %s", tostring(compression_level));
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
25 module:log("warn", "Module loading aborted. Compression won't be available.");
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
26 return;
719350956714 Add config option handling.
Tobias Markmann <tm@ayena.de>
parents: 1674
diff changeset
27 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
28
1670
23bb280c5eac Remove unwanted spaces.
Tobias Markmann <tm@ayena.de>
parents: 1669
diff changeset
29 module:add_event_hook("stream-features",
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
30 function (session, features)
1673
5f81cd6d4a92 Remove space at the end of a line.
Tobias Markmann <tm@ayena.de>
parents: 1672
diff changeset
31 if not session.compressed then
1674
250bddde4162 Add a TODO for s2s compression support.
Tobias Markmann <tm@ayena.de>
parents: 1673
diff changeset
32 -- FIXME only advertise compression support when TLS layer has no compression enabled
1672
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
33 features:add_child(compression_stream_feature);
614623f393c6 Add FIXME to remember TLS compression detection.
Tobias Markmann <tm@ayena.de>
parents: 1671
diff changeset
34 end
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
35 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
36 );
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
37
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
38 module:hook("s2s-stream-features",
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
39 function (data)
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
40 local session, features = data.session, data.features;
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
41 -- FIXME only advertise compression support when TLS layer has no compression enabled
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
42 features:add_child(compression_stream_feature);
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
43 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
44 );
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
45
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
46 -- S2Sout handling aka the client perspective in the S2S connection
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
47 module:hook_stanza(xmlns_stream, "features",
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
48 function (session, stanza)
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
49 if not session.compressed then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
50 module:log("debug", "FEATURES: "..stanza:pretty_print())
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
51 -- does remote server support compression?
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
52 local comp_st = stanza:child_with_name("compression");
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
53 if comp_st then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
54 -- do we support the mechanism
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
55 for a in comp_st:children() do
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
56 local algorithm = a[1]
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
57 if algorithm == "zlib" then
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
58 session.sends2s(st.stanza("compress", {xmlns=xmlns_compression_protocol}):text("zlib"))
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
59 session.log("info", "Enabled compression using zlib.")
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
60 return true;
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
61 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
62 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
63 session.log("debug", "Remote server supports no compression algorithm we support.")
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
64 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
65 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
66 end
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
67 , 250);
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
68
1674
250bddde4162 Add a TODO for s2s compression support.
Tobias Markmann <tm@ayena.de>
parents: 1673
diff changeset
69 -- TODO Support compression on S2S level too.
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
70 module:add_handler({"c2s_unauthed", "c2s", "s2sin_unauthed", "s2sin"}, "compress", xmlns_compression_protocol,
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
71 function(session, stanza)
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
72 -- fail if we are already compressed
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
73 if session.compressed then
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
74 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
75 session.send(error_st);
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
76 session.log("warn", "Tried to establish another compression layer.");
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
77 end
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
78
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
79 -- checking if the compression method is supported
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
80 local method = stanza:child_with_name("method")[1];
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
81 if method == "zlib" then
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
82 session.log("info", method.." compression selected.");
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
83 (session.sends2s or session.send)(st.stanza("compressed", {xmlns=xmlns_compression_protocol}));
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
84 session:reset_stream();
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
85
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
86 -- create deflate and inflate streams
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
87 local status, deflate_stream = pcall(zlib.deflate, compression_level);
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
88 if status == false then
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
89 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
90 (session.sends2s or session.send)(error_st);
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
91 session.log("error", "Failed to create zlib.deflate filter.");
1716
3f7fd1445d02 mod_compression: Fixed some undefined global accesses
Waqas Hussain <waqas20@gmail.com>
parents: 1679
diff changeset
92 module:log("error", deflate_stream);
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
93 return
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
94 end
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
95
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
96 local status, inflate_stream = pcall(zlib.inflate);
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
97 if status == false then
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
98 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
99 (session.sends2s or session.send)(error_st);
2279
49bc4c7bdef8 Fixing some typos.
Tobias Markmann <tm@ayena.de>
parents: 1728
diff changeset
100 session.log("error", "Failed to create zlib.deflate filter.");
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
101 module:log("error", inflate_stream);
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
102 return
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
103 end
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
104
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
105 -- setup compression for session.w
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
106 local old_send = session.send;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
107
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
108 session.send = function(t)
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
109 local status, compressed, eof = pcall(deflate_stream, tostring(t), 'sync');
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
110 if status == false then
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
111 session:close({
1718
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
112 condition = "undefined-condition";
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
113 text = compressed;
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
114 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
115 });
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
116 module:log("warn", compressed);
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
117 return;
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
118 end
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
119 old_send(compressed);
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
120 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
121
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
122 -- setup decompression for session.data
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
123 local function setup_decompression(session)
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
124 local old_data = session.data
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
125 session.data = function(conn, data)
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
126 local status, decompressed, eof = pcall(inflate_stream, data);
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
127 if status == false then
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
128 session:close({
1718
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
129 condition = "undefined-condition";
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
130 text = decompressed;
af3d0c329396 Support compression also after SASL.
Tobias Markmann <tm@ayena.de>
parents: 1716
diff changeset
131 extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
132 });
1719
cf103398e643 Don't allow double compression.
Tobias Markmann <tm@ayena.de>
parents: 1718
diff changeset
133 module:log("warn", decompressed);
1678
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
134 return;
79eb903d0e67 Using pcall to make save the rest from zlib fails. Emit errors on those fails.
Tobias Markmann <tm@ayena.de>
parents: 1677
diff changeset
135 end
1671
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
136 old_data(conn, decompressed);
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
137 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
138 end
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
139 setup_decompression(session);
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
140
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
141 local session_reset_stream = session.reset_stream;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
142 session.reset_stream = function(session)
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
143 session_reset_stream(session);
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
144 setup_decompression(session);
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
145 return true;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
146 end;
d196ac213104 Actually inject de- and compression into the reading/writing functions.
Tobias Markmann <tm@ayena.de>
parents: 1670
diff changeset
147 session.compressed = true;
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
148 else
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
149 session.log("info", method.." compression selected. But we don't support it.");
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
150 local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
151 (session.sends2s or session.send)(error_st);
1669
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
152 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
153 end
b8eec163a823 Commit initial version of mod_compression.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
154 );
2280
0b0fe49e5251 Enable one way stream compression on s2s links.
Tobias Markmann <tm@ayena.de>
parents: 2279
diff changeset
155