send a binary json message to a tcp server in typescript

To send a binary JSON message to a TCP server in TypeScript, you can use the net module from Node.js.

Here is an example code snippet that demonstrates how to create a binary JSON message and send it to a TCP server:

index.ts
import net from 'net';
import { Buffer } from 'buffer';

// Create a binary JSON message
const message = {
  id: 1,
  name: 'John Doe',
  age: 30,
};
const messageBuffer = Buffer.from(JSON.stringify(message), 'utf-8');

// Create a TCP client and connect to the server
const client = net.connect({ port: 8080 }, () => {
  console.log('Connected to server!');

  // Send the binary JSON message to the server
  client.write(messageBuffer);
});

// Handle errors and close events
client.on('error', (error) => {
  console.error(error);
});
client.on('close', () => {
  console.log('Connection closed!');
});
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In this example, we first create a JavaScript object that represents our data. We then convert this object to a JSON string and create a Buffer from it using the Buffer.from() method.

Next, we create a TCP client using the net.connect() method and connect it to the server on port 8080. Once the connection is established, we send the binary JSON message using the client.write() method.

Finally, we handle the error and close events of the client to log any errors and the connection status.