TCP connector: Ping

An example of connecting to a TCP server on localhost and writing a 'ping' message to the server.

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

const encoder = new TextEncoder();

Establish a connection to our TCP server that is currently being run on localhost port 8080.

const conn = await Deno.connect({
  hostname: "127.0.0.1",
  port: 8080,
  transport: "tcp",
});

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

await conn.write(encoder.encode("ping"));

Run this example locally using the Deno CLI:

deno run --allow-net https://docs.deno.com/learn/examples/tcp-connector.ts

Additional resources