UDP Message

The UDP trigger relays UDP messages. UDP is a simple datagram protocol that sends and receives data through specific UDP ports. Many sensor devices and mobile apps use UDP to publish live data. The data delivery is not guaranteed.

The UDP trigger has two output ports. The success port (✔) can send a message if the trigger receives it successfully. The failure port (x) can send a message if the trigger fails to receive one.

Note The UDP trigger is not supported in a fault tolerant installation of FME Flow.

Specifying UDP Ports

UDP ports cannot be duplicated across UDP triggers. There must be a unique UDP port for each UDP trigger.

When specific ports are desired, the port should be made available and not blocked by firewall settings. In the following example, Amazon Web Services firewall security settings are configured for an instance to reserve ports 5000 - 6000 (incoming) for the UDP trigger:

Note See also Working with Parameters in Automations Workflows.

Tip To test that your parameters work as expected, click Validate.

Output Attributes

See Also

Working with Output Attributes in Automations Workflows.

Attribute	Description
time	Event time
source	Event type
error.type	(Failure port only) Error type: InvalidMessage: An error occurred while configuring this component, such as missing or malformed values. DeadLetter: An error occured while connecting to an external resource. Examples may include connection issues, invalid credentials, or generic external resource exceptions.
error.message	(Failure port only) Error message
message	(Success port only) Message content