UDP Connector: Ping

An example of writing a 'ping' message to a UDP server on localhost.

Instantiate an instance of text encoder to write to the UDP stream.

const encoder = new TextEncoder();

Create a UDP listener to allow us to send a ping to the other UDP server.

const listener = Deno.listenDatagram({
  port: 10001,
  transport: "udp",
});

Since UDP is a connectionless protocol, we need to define the address of the listener

const peerAddress: Deno.NetAddr = {
  transport: "udp",
  hostname: "127.0.0.1",
  port: 10000,
};

Encode the 'ping' message and write to the UDP connection for the server to receive.

await listener.send(encoder.encode("ping"), peerAddress);
listener.close();

Run this example locally using the Deno CLI:

deno run --allow-net --unstable https://docs.deno.com/examples/udp-connector.ts

Additional resources: