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mod_muc_eventsource/README.markdown @ 2883:7c16afc70d11
mod_muc_eventsource: New module forked from mod_pubsub_eventsource, exposes room message stream over SSE
author | Matthew Wild <mwild1@gmail.com> |
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date | Mon, 19 Feb 2018 22:17:38 +0000 |
child | 5923:694b62d8a82f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mod_muc_eventsource/README.markdown Mon Feb 19 22:17:38 2018 +0000 @@ -0,0 +1,78 @@ +--- +labels: 'Stage-Beta' +summary: Subscribe to MUC rooms using the HTML5 EventSource API +... + +Introduction +------------ + +This module and its docs shamelessly forked from mod_pubsub_eventsource. + +[Server-Sent Events](https://en.wikipedia.org/wiki/Server-sent_events) +is a simple HTTP/line-based protocol supported in HTML5, making it easy +to receive a stream of "events" in realtime using the Javascript +[EventSource +API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource). + +EventSource is supported in [most modern +browsers](http://caniuse.com/#feat=eventsource), and for the remainder +there are 'polyfill' compatibility layers such as +[EventSource.js](https://github.com/remy/polyfills/blob/master/EventSource.js) +and [jquery.eventsource](https://github.com/rwldrn/jquery.eventsource). + +Details +------- + +Subscribing to a node from Javascript is easy: + + var source = new EventSource('http://muc.example.org:5280/eventsource/myroom'); + source.onmessage = function (event) { + console.log(event.data); // Do whatever you want with the data here + }; + +### Access control + +Be warned that this module currently performs no access control. It will expose +the messages of ALL rooms on the host it is loaded on. This may be changed in +future revisions. + +### Cross-domain issues + +The same cross-domain restrictions apply to EventSource that apply to +BOSH, and support for CORS is not clearly standardized yet. You may want +to proxy connections through your web server for this reason. See [BOSH: +Cross-domain +issues](https://prosody.im/doc/setting_up_bosh#proxying_requests) for +more information. + +Configuration +------------- + +There is no special configuration for this module. Simply load it onto a +MUC component like so: + + Component "muc.example.org" "muc" + modules_enabled = { "muc_eventsource" } + +As it uses HTTP to serve the event streams, you can use Prosody's +standard [HTTP configuration options](https://prosody.im/doc/http) to +control how/where the streams are served. + +**Note about URLs:** It is important to get the event streams from the +correct hostname (that of the MUC host). An example stream URL is +`http://muc.example.org:5280/eventsource/myroom`. If you need to +access the streams using another hostname (e.g. `example.org`) you can +use the `http_host` option under the Component, e.g. +`http_host = "example.org"`. For more information see the ['Virtual +Hosts'](https://prosody.im/doc/http#virtual_hosts) section of our HTTP +documentation. + +Compatibility +------------- + + ------- -------------- + 0.10 ? + 0.9 ? + 0.8 Doesn't work + Trunk Works + ------- --------------