return a binary response from a http server in typescript

To return a binary response from an HTTP server in TypeScript, you need to set the response headers to indicate that the response contains binary data, and then send the binary data as the response body. Here's an example:

index.ts
import * as http from 'http';
import * as fs from 'fs';

const server = http.createServer((req, res) => {
  // Set headers to indicate binary data
  res.setHeader('Content-Type', 'application/octet-stream');
  res.setHeader('Content-Disposition', 'attachment; filename="binary-file"');
  
  // Read binary data from a file
  const binaryData = fs.readFileSync('path/to/binary/file');
  
  // Send binary data as response
  res.write(binaryData);
  res.end();
});

server.listen(8080, () => {
  console.log('Server is listening on port 8080');
});
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In this example, we create an HTTP server using the http module, and in the request handler, we set the response headers to indicate that the response contains binary data. We then read the binary data from a file using the fs module, and send it as the response body using the res.write() method. Finally, we end the response using the res.end() method.

Note that in this example, we set the response headers to indicate that the response should be downloaded as a file (Content-Disposition: attachment; filename="binary-file"). You can modify the headers to suit your specific use case.