• Version: 12.16.0 | 13.8.0
• Platform: Darwin Kernel Version 18.6.0
• Subsystem:

What steps will reproduce the bug?

Throwing from a response listener (callback) to http.get() will not trigger process.once('uncaughtException', () => {}). Interestingly, throwing from a request listener (callback) to http.createServer() will still.

This behavior changed with 12.16.0, I'm guessing likely due to the porting of the emit changes?

const http = require('http')

let server
let request

process.once('uncaughtException', function() {
  // never gets here from response listener in 12.16, works fine < 12.16.
  console.log('in uncaughtException handler')

  server.close(done)
})

server = http.createServer(function cb_createServer(request, response) {
  // Throw from request listener will result in uncaughtException
  //throw new Error('wat')
  response.writeHead(200, {'Content-Type': 'text/plain'})
  response.end()
})

server.listen(8183, function() {
  request = http.get({host: 'localhost', port: 8183}, function() {
    // Throw from response listener will not result in uncaughtException
    throw new Error('whoah')
  })
})

How often does it reproduce? Is there a required condition?

Consistently does not trigger uncaughtException / does not allow handling via process.on('uncaughtException', ...).

What is the expected behavior?

Should be able to notice the uncaught exception thrown from the handler.

What do you see instead?

Additional information