Why am I seeing H28 warnings?


I'm seeing intermittent H28 warnings in my router logs and on the dashboard.


The best description of what you are seeing can be found here. It is likely that your app is waiting for the full request to be sent before your app will process it. However, this never happened because the value of the Content-Length header was larger than the amount of data sent, so the app continued to wait. After waiting 55 seconds for the additional data to be sent, the connection was terminated.

Ask on Stack Overflow

Engage with a community of passionate experts to get the answers you need

Ask on Stack Overflow

Heroku Support

Create a support ticket and our support experts will get back to you

Contact Heroku Support