Hi,

I upgraded my docker to 1.6 today (I believe it was on 1.5, but I'm not 100% sure).

I now have a problem where my docker client gives me docker.errors.APIError: 500 Server Error: Internal Server Error ("http: Hijack is incompatible with use of CloseNotifier") when I try to post to /containers/<container>/attach (my client uses dockerpty and docker-py)

It would appear that compose has a similar problem (docker/compose#1275).

If I run an image with the docker cli it does work (for example, docker run -it ubuntu:14.04 /bin/bash)

I'm not entirely sure how to debug this issue.

Thanks

Stephen.