create a http server and read the request body as binary and return a binary response in javascript

To create an HTTP server in JavaScript, we can make use of the built-in http module. We can create a server using http.createServer() method which accepts a callback function. The callback function gets called every time a new request is made to the server.

To read the request body as binary, we need to listen for the data event on the request object, and accumulate the data into a buffer. Once the entire request body is received, we can process it and create a response.

To return a binary response, we can set the Content-Type header to the appropriate binary MIME type, and write the binary data to the response object.

Here's an example code snippet that demonstrates how to create an HTTP server that reads binary request body and returns a binary response:

index.tsx
const http = require('http');

http.createServer((request, response) => {
  const chunks = [];
  request.on('data', (chunk) => {
    chunks.push(chunk);
  });
  request.on('end', () => {
    const body = Buffer.concat(chunks);
    // process the request body, and create a binary response
    const responseData = createBinaryResponse();
    response.setHeader('Content-Type', 'application/octet-stream');
    response.end(responseData);
  });
}).listen(3000, () => {
  console.log('Server running on port 3000');
});

function createBinaryResponse() {
  // return some binary data
  return Buffer.from([0x48, 0x65, 0x6c, 0x6c, 0x6f]);
}
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