UDP listener: Ping

Warning: This is an unstable API that is subject to change or removal at anytime.
An example of a UDP listener on localhost that will log the message if written to and close the connection if connected to.

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Instantiate an instance of text decoder to read the UDP stream bytes back into plaintext.

const decoder = new TextDecoder();

Instantiate an instance of a UDP listener on localhost port 10000.

const listener = Deno.listenDatagram({
  port: 10000,
  transport: "udp",
});

Await asynchronous messages that are sent to our UDP listener.

for await (const [data, address] of listener) {

Here we log the address of the sender of the data

  console.log("Server - received information from", address);

Here we log the results of the bytes that were read into our buffer array.

  console.log("Server - received:", decoder.decode(data));

We close the connection that was established.

  listener.close();
}

Run this example locally using the Deno CLI:

deno run --allow-net --unstable-net https://docs.deno.com/examples/scripts/udp_listener.ts

UDP listener: Ping

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