Mercurial > prosody-modules
annotate mod_muc_eventsource/README.markdown @ 5737:72b0fa7e36dc
mod_storage_s3: Sort archive items by LastModified
Otherwise they would get sorted by who knows what, probably the path.
Also not sure if the timestamp comparisons were correct before.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 27 Nov 2023 14:27:35 +0100 |
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1 --- |
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2 labels: 'Stage-Beta' |
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3 summary: Subscribe to MUC rooms using the HTML5 EventSource API |
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4 ... |
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5 |
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6 Introduction |
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7 ------------ |
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8 |
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9 This module and its docs shamelessly forked from mod_pubsub_eventsource. |
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10 |
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11 [Server-Sent Events](https://en.wikipedia.org/wiki/Server-sent_events) |
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12 is a simple HTTP/line-based protocol supported in HTML5, making it easy |
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13 to receive a stream of "events" in realtime using the Javascript |
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14 [EventSource |
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15 API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource). |
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16 |
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17 EventSource is supported in [most modern |
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18 browsers](http://caniuse.com/#feat=eventsource), and for the remainder |
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19 there are 'polyfill' compatibility layers such as |
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20 [EventSource.js](https://github.com/remy/polyfills/blob/master/EventSource.js) |
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21 and [jquery.eventsource](https://github.com/rwldrn/jquery.eventsource). |
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22 |
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23 Details |
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24 ------- |
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25 |
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26 Subscribing to a node from Javascript is easy: |
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27 |
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28 var source = new EventSource('http://muc.example.org:5280/eventsource/myroom'); |
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29 source.onmessage = function (event) { |
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30 console.log(event.data); // Do whatever you want with the data here |
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31 }; |
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32 |
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33 ### Access control |
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34 |
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35 Be warned that this module currently performs no access control. It will expose |
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36 the messages of ALL rooms on the host it is loaded on. This may be changed in |
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37 future revisions. |
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38 |
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39 ### Cross-domain issues |
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40 |
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41 The same cross-domain restrictions apply to EventSource that apply to |
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42 BOSH, and support for CORS is not clearly standardized yet. You may want |
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43 to proxy connections through your web server for this reason. See [BOSH: |
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44 Cross-domain |
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45 issues](https://prosody.im/doc/setting_up_bosh#proxying_requests) for |
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46 more information. |
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47 |
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48 Configuration |
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49 ------------- |
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50 |
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51 There is no special configuration for this module. Simply load it onto a |
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52 MUC component like so: |
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53 |
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54 Component "muc.example.org" "muc" |
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55 modules_enabled = { "muc_eventsource" } |
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56 |
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57 As it uses HTTP to serve the event streams, you can use Prosody's |
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58 standard [HTTP configuration options](https://prosody.im/doc/http) to |
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59 control how/where the streams are served. |
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60 |
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61 **Note about URLs:** It is important to get the event streams from the |
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62 correct hostname (that of the MUC host). An example stream URL is |
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63 `http://muc.example.org:5280/eventsource/myroom`. If you need to |
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64 access the streams using another hostname (e.g. `example.org`) you can |
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65 use the `http_host` option under the Component, e.g. |
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66 `http_host = "example.org"`. For more information see the ['Virtual |
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67 Hosts'](https://prosody.im/doc/http#virtual_hosts) section of our HTTP |
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68 documentation. |
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69 |
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70 Compatibility |
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71 ------------- |
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72 |
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73 ------- -------------- |
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74 0.10 ? |
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75 0.9 ? |
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76 0.8 Doesn't work |
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77 Trunk Works |
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78 ------- -------------- |