Changes

==How MQTT works==

==How MQTT works==

In general an MQTT connection takes place between two Clients and a Broker. A RUT router and TRB14x gateways can be Broker, Client or both. The MQTT Publisher(Client) present in TRB14x and RUT routers subscribes to two topics by default: '''<TYPE>/get''' and '''get/<SERIAL>/command'''. Where '''<TYPE>''' is device type, for RUT routers type is '''router''' and for TRB14x type is '''device''' and '''<SERIAL>''' is the router's serial number.

In general an MQTT connection takes place between two Clients and a Broker. A TRB14x gateways and RUT routers can be Broker, Client or both. The MQTT Publisher(Client) present in TRB14x and RUT routers subscribes to two topics by default: '''<TYPE>/get''' and '''get/<SERIAL>/command'''. Where '''<TYPE>''' is device type, for RUT routers type is '''router''' and for TRB14x gateways type is '''device'''. Parameter  '''<SERIAL>''' is the router's serial number. When a third party client connects to the Broker, it sends the message '''id''' to the the topic '''<TYPE>/get'''. The publisher then sends a response containing its serial number to the topic '''<TYPE>/id'''. Now that the Client knows the router's or gateway's serial number it can ask for values of various parameters by sending requests to the topic '''<TYPE>/<SERIAL>/parameter_name'''. The MQTT Publisher can send responses containing values of these system parameters, if your device supports that parameter:

First lets look over how MQTT works on TRB145 gateway and on RUT9xx, RUTx routers. An MQTT connection takes place between two Clients and a Broker. A RUT router and TRB145 gateway can be Broker, a Client or both. The MQTT Publisher (Client) present in RUT routers subscribes to two topics by default: '''router/get''' and '''get/<SERIAL>/command''', where '''<SERIAL>''' is the router's serial number. When a third party client connects to the Broker, it sends the message '''id''' to the the topic '''router/get'''. The publisher then sends a response containing its serial number to the topic '''router/id'''. Now that the Client knows the router's serial number it can ask for values of various parameters by sending requests to the topic '''router/<SERIAL>/parameter_name'''. The MQTT Publisher can send responses containing values of these system parameters:

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