This is a list of our most frequently asked questions. For more information about CloudMQTT, or if you need any support, please visit our support page.
CloudMQTT are managed Mosquitto servers in the cloud which provides lightweight methods of carrying out messaging using a publish/subscribe message queueing model.
Message queues provide an asynchronous communications protocol, the sender and receiver of the message do not need to interact with the message queue at the same time. Messages placed onto the queue are stored until the recipient retrieves them or until the messages times out. MQTT and Mosquitto are for good use by bandwidth sensitive applications.
Mosquitto implements the MQ Telemetry Transport protocol, MQTT, which provides lightweight methods of carrying out messaging using a publish/subscribe message queueing model.
Your ports can be found in the control panel for your instance. There are three different ports:
Yes websockets are supported. The port for websockets can be found in the console page for your instance. Websockets were enabled during April 2015, instances created before that might need to be recreated before websockets can be used.
If you connect by TLS/SSL, add --capath or --cafile and point it to a cert store. Our server cert is signed by Comodo, which has the AddTrust CA as root. Most OSs comes with it by default, so can you point to your default trust/CA store. (example: --cafile=/etc/ssl/certs/ca-certificates.crt) More information can be found here, under Certificate based SSL/TLS Support. You also need to use the port for MQTT over TLS (see above).
All plans are billed by the second, you can try out even the largest instance types for mere pennies. As soon as you delete the instance you won't be charged for it anymore, i.e. if you had a Loud Leopard (for $99/month) running for 15 days, then you will only be charged $49,5.
Billing occurs at the end of each month, and you are only charged for the time an instance has been available to you.
A connection is an active TCP connection from your application/device to the Mosquitto broker. If two devices connected to the broker, they will consume two connections.