Connections

This page is a live view of the devices currently connected to the broker. It reads live broker state, so it shows who is connected right now rather than the clients you have defined. There is no create action, the page is read-only.

What a connection is

A connection is a live session on the broker. It is not the same as a client or as topic access:

• A connection is one client connected to the broker right now. When the client disconnects, its row drops off the list.
• A client is the set of credentials that authenticate a device. Clients are created on the Clients page and exist whether or not anyone is connected.
• Topic access is who may publish or subscribe to which topics. Groups and Group Rules control that, not this page.

One client can open several connections at once, and each shows up as its own row.

Reading the table

Each row describes one live session:

• MQTT Client ID is the client identifier sent in the connect packet.
• IP Address is the source address the broker sees for the session.
• Protocol is the connection protocol, shown as MQTT.
• Keep-Alive is the negotiated keep-alive interval in seconds.
• Connected At is when the session opened, in UTC. This column is sortable.
• Group is the group the client is assigned to.

Finding and paging through sessions

Use the search box to filter by MQTT Client ID. The table pages through results with the count and the previous and next controls at the bottom.

When no device is connected, the page shows an empty state instead of the table.