UDP is a simple datagram protocol that sends and receives data through specific UDP ports. The data delivery is not guaranteed. Many sensor devices and mobile apps use UDP to publish live data.
The FME Flow Notification Service UDP publisher relays UDP messages and publishes them to notification topics. Using the UDP publisher, you can enable multiple UDP ports to listen for incoming data packets. Each UDP port can be uniquely configured to publish incoming UDP messages to one or more notification topics.
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