POST requests hang in node v16.8

[demipixel]

Support plan

• is this issue currently blocking your project? (yes/no): no
• is this issue affecting a production system? (yes/no): no

Context

• node version: v16.8.0
• module version with issue: 18.1.0
• last module version without issue: works with node v14.16.0
• environment (e.g. node, browser, native): node
• used with (e.g. hapi application, another framework, standalone, ...): Just hapi module from npm
• any other relevant information: Not actually my issue but one I discovered from a Stackoverflow post.

What are you trying to achieve or the steps to reproduce?

import * as Hapi from 'hapi';

const server = new Hapi.Server({ port: 6543, host: 'localhost' });

server.route({
  method: 'POST',
  path: '/',
  handler: function (request, reply) {
    return reply.response('Reply!');
  },
});

server.start().then(function () {
  console.log('Live');
});

What was the result you got?

POST requests hangs and never calls handler. Related to this issue which mentioned both POST and OPTIONS hang in node v16. I've discovered internals.event in request.js (https://github.com/hapijs/hapi/blob/master/lib/request.js#L701) receives a 'close' event, which then does:

request._eventContext.request = null;

which then skips the handler. Putting a return right before this line makes the request get handled correctly.

In node v14.16, an end event is received before the handler is called (where it's receiving close in node v16), and close is received after the handler has finished.

What result did you expect?

Don't hang!

[devinivy]

I believe the issue here is that hapi v18 is not supported on node v16. In node v16 the semantics of http req/res events have changed in notable ways, addressed in hapi v20 with #4225. Your best bet will be to downgrade node to v14 or upgrade hapi to v20.

[mbplautz]

Here I am over 8 months later just having faced this problem and I am glad to see I am not the only one. I appreciate that there is a resolution to this POST hanging issue.