Mercurial > prosody-modules

annotate mod_muc_eventsource/mod_muc_eventsource.lua @ 4432:e83284d4d5c2

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mod_auth_ccert/README: Add setting to ensure Prosdy asks for client certificate This used to be the default for all services, but since it triggers annoying popups in web browsers it was inverted in Prosody and only s2s enables it, so it needs to be explicitly enabled for c2s again. See trunk 115b5e32d960 Thanks debacle
author Kim Alvefur <zash@zash.se>
date Sat, 06 Feb 2021 21:34:25 +0100
parents 39485b9bbdd6
children
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1 module:depends("http");
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2 local nodeprep = require "util.encodings".stringprep.nodeprep;
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4 local jid_split = require "util.jid".split;
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5 local json = require "util.json";
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7 local streams = {};
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9 function client_closed(response)
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10 local node = response._eventsource_node;
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11 module:log("debug", "Destroying client for %q", node);
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12 streams[node][response] = nil;
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13 if next(streams[node]) == nil then
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14 streams[node] = nil;
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15 end
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16 end
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18 function serve_stream(event, node)
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19 local response = event.response;
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20
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21 node = nodeprep(node);
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22 if node == nil then
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23 return 400;
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24 end
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25
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26 module:log("debug", "Client subscribed to: %s", node);
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28 response.on_destroy = client_closed;
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29 response._eventsource_node = node;
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31 response.conn:write(table.concat({
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32 "HTTP/1.1 200 OK";
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33 "Content-Type: text/event-stream";
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34 "Access-Control-Allow-Origin: *";
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35 "Access-Control-Allow-Methods: GET";
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36 "Access-Control-Max-Age: 7200";
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37 "";
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38 "";
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39 }, "\r\n"));
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41 local clientlist = streams[node];
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42 if not clientlist then
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43 clientlist = {};
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44 streams[node] = clientlist;
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45 end
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46 clientlist[response] = response.conn;
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47
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48 return true;
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49 end
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51 function handle_message(event)
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52 local room, stanza = event.room, event.stanza;
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53 local node = (jid_split(event.room.jid));
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54 local clientlist = streams[node];
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55 if not clientlist then module:log("debug", "No clients for %q", node); return; end
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56
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57 -- Extract body from message
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58 local body = event.stanza:get_child_text("body");
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59 if not body then
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60 return;
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61 end
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62 local nick = select(3, jid_split(stanza.attr.from));
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63 -- Encode body and broadcast to eventsource subscribers
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64 local json_data = json.encode({
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65 nick = nick;
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66 body = body;
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67 });
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68 local data = "data: "..json_data:gsub("\n", "\ndata: \n").."\n\n";
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69 for response, conn in pairs(clientlist) do
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70 conn:write(data);
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71 end
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72 end
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74 module:provides("http", {
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75 name = "eventsource";
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76 route = {
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77 ["GET /*"] = serve_stream;
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78 };
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79 });
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82 module:hook("muc-broadcast-message", handle_message);