New HTTP Error code: H27 - Client Request Interrupted

Change effective on 03 June 2015

We’re rolling out a change that introduces a new error code: H27 - Client Request Interrupted.

This error will be logged if the client socket was closed either in the middle of the request or before a response could be returned.

2010-10-06T21:51:37-07:00 heroku[router]: at=warning code=H27 desc="Client Request Interrupted" method=POST path="/submit/" fwd= dyno=web.1 connect=1ms service=0ms status=499 bytes=0 sock=client

Previously, this error condition caused an H18 to be logged and the sock field could be used to differentiate between what are now H18 and H27 errors. The sock field remains on H18 errors for backwards compatibility, but will always have the value backend.

See the Error Codes Dev Center article for details.