Mercurial > prosody-modules
annotate mod_pubsub_mqtt/README.markdown @ 4542:fb4a50bf60f1
mod_prometheus: Invoke stats collection if in 'manual' mode
Since 10d13e0554f9 a special value for statistics_interval "manual"
exists, where a module is expected to invoke processing in connection to
collection of stats. This makes internal collection and exporting to
Prometheus happens at the same time with no chance of timers getting out
of sync.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 13 Apr 2021 23:53:53 +0200 |
| parents | 2333e384409d |
| children |
| rev | line source |
|---|---|
| 1803 | 1 --- |
| 2 labels: | |
| 3 - 'Stage-Beta' | |
| 4 summary: 'MQTT interface to Prosody''s pubsub' | |
| 5 ... | |
| 6 | |
| 7 Introduction | |
| 8 ------------ | |
| 9 | |
| 10 [MQTT](http://mqtt.org/) is a lightweight binary pubsub protocol suited | |
| 11 to embedded devices. This module provides a way for MQTT clients to | |
| 12 connect to Prosody and publish or subscribe to local pubsub nodes. | |
| 13 | |
| 14 Details | |
| 15 ------- | |
| 16 | |
| 17 MQTT has the concept of 'topics' (similar to XMPP's pubsub 'nodes'). | |
| 18 mod\_pubsub\_mqtt maps pubsub nodes to MQTT topics of the form | |
|
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2333e384409d
mod_pubsub_mqtt/README: Fix quotes
Kim Alvefur <zash@zash.se>
parents:
1803
diff
changeset
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19 `HOST/NODE`, e.g.`pubsub.example.org/mynode`. |
| 1803 | 20 |
| 21 ### Limitations | |
| 22 | |
| 23 The current implementation is quite basic, and in particular: | |
| 24 | |
| 25 - Authentication is not supported | |
| 26 - SSL/TLS is not supported | |
| 27 - Only QoS level 0 is supported | |
| 28 | |
| 29 ### Payloads | |
| 30 | |
| 31 XMPP payloads are always XML, but MQTT does not define a payload format. | |
| 32 Therefore mod\_pubsub\_mqtt will attempt to convert data of certain | |
| 33 recognised payload types. Currently supported: | |
| 34 | |
| 35 - JSON (see [XEP-0335](http://xmpp.org/extensions/xep-0335.html) for | |
| 36 the format) | |
| 37 - Plain UTF-8 text (wrapped inside | |
| 38 `<data xmlns="https://prosody.im/protocol/mqtt"/>`) | |
| 39 | |
| 40 All other XMPP payload types are sent to the client directly as XML. | |
| 41 Data published by MQTT clients is currently never translated, and always | |
| 42 treated as UTF-8 text. | |
| 43 | |
| 44 Configuration | |
| 45 ------------- | |
| 46 | |
| 47 There is no special configuration for this module. Simply load it on | |
| 48 your pubsub host like so: | |
| 49 | |
| 50 Component "pubsub.example.org" "pubsub" | |
| 51 modules_enabled = { "pubsub_mqtt" } | |
| 52 | |
| 53 You may also configure which port(s) mod\_pubsub\_mqtt listens on using | |
| 54 Prosody's standard config directives, such as `mqtt_ports`. Network | |
| 55 settings **must** be specified in the global section of the config file, | |
| 56 not under any particular pubsub component. The default port is 1883 | |
| 57 (MQTT's standard port number). | |
| 58 | |
| 59 Compatibility | |
| 60 ------------- | |
| 61 | |
| 62 ------- -------------- | |
| 63 trunk Works | |
| 64 0.9 Works | |
| 65 0.8 Doesn't work | |
| 66 ------- -------------- |