Mercurial > prosody-modules
view mod_muc_eventsource/mod_muc_eventsource.lua @ 4047:36b6e3e3f9e2
mod_conversejs: Disable automatic BOSH/WS endpoint discovery
Converse.js 7.0 will enable this by default, but when using this module
the BOSH and WebSocket endpoints are provided in the generated HTML, so
automatic discovery is not needed and unlikely to work without an
additional module.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 18 Jun 2020 15:24:34 +0200 |
parents | 39485b9bbdd6 |
children |
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module:depends("http"); local nodeprep = require "util.encodings".stringprep.nodeprep; local jid_split = require "util.jid".split; local json = require "util.json"; local streams = {}; function client_closed(response) local node = response._eventsource_node; module:log("debug", "Destroying client for %q", node); streams[node][response] = nil; if next(streams[node]) == nil then streams[node] = nil; end end function serve_stream(event, node) local response = event.response; node = nodeprep(node); if node == nil then return 400; end module:log("debug", "Client subscribed to: %s", node); response.on_destroy = client_closed; response._eventsource_node = node; response.conn:write(table.concat({ "HTTP/1.1 200 OK"; "Content-Type: text/event-stream"; "Access-Control-Allow-Origin: *"; "Access-Control-Allow-Methods: GET"; "Access-Control-Max-Age: 7200"; ""; ""; }, "\r\n")); local clientlist = streams[node]; if not clientlist then clientlist = {}; streams[node] = clientlist; end clientlist[response] = response.conn; return true; end function handle_message(event) local room, stanza = event.room, event.stanza; local node = (jid_split(event.room.jid)); local clientlist = streams[node]; if not clientlist then module:log("debug", "No clients for %q", node); return; end -- Extract body from message local body = event.stanza:get_child_text("body"); if not body then return; end local nick = select(3, jid_split(stanza.attr.from)); -- Encode body and broadcast to eventsource subscribers local json_data = json.encode({ nick = nick; body = body; }); local data = "data: "..json_data:gsub("\n", "\ndata: \n").."\n\n"; for response, conn in pairs(clientlist) do conn:write(data); end end module:provides("http", { name = "eventsource"; route = { ["GET /*"] = serve_stream; }; }); module:hook("muc-broadcast-message", handle_message);