const http = require('http');

/**

* Handles incoming HTTP requests and flushes headers for internal tooling.

* Allows for manual overrides.

*/

const server = http.createServer((req, res) => {

// Define a set of headers to be flushed for internal tooling

const internalHeaders = ['X-Request-ID', 'X-User-Agent', 'X-Custom-Header'];

// Override the headers if any are provided in the request

for (const header of internalHeaders) {

if (req.headers[header]) {

res.setHeader(header, req.headers[header]); // Copy from request

}

}

// Add any additional headers here if needed.

res.setHeader('Server', 'MyInternalServer');

// Flush the headers for internal tooling

for (const header of internalHeaders) {

res.setHeader(header, 'FLUSHED'); // Set a specific value to indicate flushing

}

res.writeHead(200);

res.end('Hello, World!');

});

const port = 3000;

server.listen(port, () => {

console.log(`Server listening on port ${port}`);

});