How can I caught ERR_HTTP_HEADERS_SENT

[yasmanets]

Version

16.15

Problematic

I have a server that exposes an endpoint that responds with a file through a pipeline. Cancelling the request results in an ERR_STREAM_PREMATURE_CLOSE.

When that error occurs, an ERR_HTTP_HEADERS_SENT is thrown but I am not able to catch it.

I have tried catching it by listening to process.on('uncaughtException') and request.on('error') but both options don't work.

Any suggestions or ideas about the problem?

[atlowChemi]

Basically you would need to add a listener to the close event of the request, and when the ERR_STREAM_PREMATURE_CLOSE is detected, you could destroy file's stream:

const http = require('node:http');

const server = http.createServer((req, res) => {
  const responseStream = yourFileProcessingPipeline(); // Your file processing pipeline here

  // Listen for premature close event on the response
  req.on('close', () => {
    // Abort the responseStream when the premature close occurs
    responseStream.destroy(new Error('Premature close occurred'));
  });

  responseStream.on('error', (err) => {
    if (err.code === 'ERR_HTTP_HEADERS_SENT') {
      // Handle ERR_HTTP_HEADERS_SENT error here
      console.error('Headers already sent:', err.message);
    } else {
      // Handle other errors that occurred during the response pipeline
      console.error('An error occurred:', err.message);
    }
  });

  responseStream.pipe(res); // Pipe the response stream to the HTTP response
});

server.listen(8080, () => {
  console.log('Server is running on port 8080');
});