ngx_stream_mqtt_preread_module

Module ngx_stream_mqtt_preread_module

https://nginx.org/en/docs/stream/ngx_stream_mqtt_preread_module.html

The ngx_stream_mqtt_preread_module module (1.23.4) allows extracting information from the CONNECT message of the Message Queuing Telemetry Transport protocol (MQTT) versions 3.1.1 and 5.0, for example, a username or a client ID.

This module is available as part of our commercial subscription.

Example Configuration

mqtt_preread on;
return       $mqtt_preread_clientid;

Directives

mqtt_preread

Syntax:mqtt_preread on | off;

Default: mqtt_preread off;

Context: stream, server

Enables extracting information from the MQTT CONNECT message at the preread phase.

Embedded Variables

• $mqtt_preread_clientid

  the clientid value from the CONNECT message

• $mqtt_preread_username

  the username value from the CONNECT message