We\'re seeing quite a lot of Error H18 (Request Interrupted) in the logs. How should these be interpreted, since sock=client in all cases I assume that it is the client that
FYI: Ben Sheldon's and catsby's answers are no longer correct. They was at the time of writing, but things have changed. H18s are now always sock=server. Heroku added a new error code H27 for sock=client.
Details here: https://devcenter.heroku.com/changelog-items/662
H18 should be taken more seriously now as they are definitely an issue with your service. H27s can generally be safely ignored as they are an issue with the client.