Mercurial > prosody-modules

annotate mod_http_altconnect/mod_http_altconnect.lua @ 2452:7d86018a6394

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mod_candy/README: Link to HTTP configuration info
author Kim Alvefur <zash@zash.se>
date Fri, 20 Jan 2017 01:20:48 +0100
parents b21236b6b8d8
children 0a0bf87ccda6
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1 -- mod_http_altconnect
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2 -- XEP-0156: Discovering Alternative XMPP Connection Methods
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3
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4 module:depends"http";
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5
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6 local json = require"util.json";
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7 local st = require"util.stanza";
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8 local array = require"util.array";
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9
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10 local host_modules = hosts[module.host].modules;
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11
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12 local function get_supported()
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13 local uris = array();
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14 if host_modules["bosh"] then
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15 uris:push({ rel = "urn:xmpp:alt-connections:xbosh", href = module:http_url("bosh", "/http-bind") });
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16 end
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17 if host_modules["websocket"] then
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18 uris:push({ rel = "urn:xmpp:alt-connections:websocket", href = module:http_url("websocket", "xmpp-websocket"):gsub("^http", "ws") });
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19 end
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20 return uris;
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21 end
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24 local function GET_xml(event)
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25 local request, response = event.request, event.response;
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26 local xrd = st.stanza("XRD", { xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0' });
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27 local uris = get_supported();
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28 for i, method in ipairs(uris) do
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29 xrd:tag("Link", method):up();
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30 end
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31 response.headers.content_type = "application/xrd+xml"
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32 response.headers.access_control_allow_origin = "*";
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33 return '<?xml version="1.0" encoding="UTF-8"?>' .. tostring(xrd);
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34 end
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36 local function GET_json(event)
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37 local request, response = event.request, event.response;
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38 local jrd = { links = get_supported() };
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39 response.headers.content_type = "application/json"
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40 response.headers.access_control_allow_origin = "*";
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41 return json.encode(jrd);
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42 end;
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43
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44 local function GET_either(event)
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45 local accept_type = event.request.headers.accept or "";
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46 if ( accept_type:find("xml") or #accept_type ) < ( accept_type:find("json") or #accept_type+1 ) then
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47 return GET_xml(event);
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48 else
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49 return GET_json(event);
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50 end
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51 end;
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52
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53 module:provides("http", {
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54 default_path = "/.well-known";
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55 route = {
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56 ["GET /host-meta"] = GET_either;
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57 -- ["GET /host-meta.xml"] = GET_xml; -- Hmmm
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58 ["GET /host-meta.json"] = GET_json;
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59 };
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60 });