Question

Am I doing something wrong with the server for https://github.com/adamvr/MQTT.js? I see client.id come in fine. Everything else comes in as undefined; I verified the MQTT client’s info with another broker using 3.1 user/pass, so I know the issue is not there.

    clients = { }

    server = mqtt.createServer (client) =>
      console.log 'Broker:mqtt:createServer'

      # Catch when client connects
      client.on 'connect', (packet) =>
        console.log 'Broker:connect'

        client.connack
          returnCode: 0

        client.id = packet.client

        console.log 'version: ' + client.versionNum # undefined
        console.log 'client: ' + client.id # COMES THROUGH FINE!
        console.log 'username: ' + client.username # undefined
        console.log 'password: ' + client.password # udefined

        clients[client.id] = client

        console.log 'clients: ' + JSON.stringify clients

   ...

    server.listen 1883

I also created an issue under the project: https://github.com/adamvr/MQTT.js/issues/22

Answer 1

The client object you receive on the connect event doesn’t contain any of the parameters you’re seeking. The only reason client.id has the correct value is because you’re setting it in the line above. The packet passed with the event contains the properties.

clients = { }

server = mqtt.createServer (client) =>
  console.log 'Broker:mqtt:createServer'

  # Catch when client connects
  client.on 'connect', (packet) =>
    console.log 'Broker:connect'

    client.connack
      returnCode: 0

    client.id = packet.client

    console.log 'version: ' + packet.versionNum
    console.log 'client: ' + packet.client
    console.log 'username: ' + packet.username
    console.log 'password: ' + packet.password

    clients[client.id] = client

    console.log 'clients: ' + JSON.stringify clients

 ...

server.listen 1883