After deploying an application, if there is an issue with the port your application exposes, you may see the following error:
upstream connect error or disconnect/reset before headers. reset reason: connection failure, transport failure reason: delayed connect error: 111
This error is due to one of the following:
- The application is listening on the wrong port.
- The application isn’t listening to any port.
To resolve this error, update your application to listen on port 8080.