Mock EPP server for your client's CI?

[riftcell]

Hi Namingo,

Thanks for epp-client. Supporting 40+ registries, including DENIC over RRI and EURid, in one MIT-licensed client is a lot to keep working.

I’ve built an open-source mock EPP server and a DENIC RRI one for testing clients offline. It runs as a single container with no credentials or OT&E account (docker run --rm -p 7700:7700 riftcell/epp-mock:latest), and the repo includes runnable PHP examples for both protocols (docs/examples/php/). The part I think is most useful is fault injection, which sandboxes can’t give you on demand: connection delays, login failures (always, flapping, hanging), abrupt disconnects, malformed frames, and success responses naming the wrong resource.

To be upfront: the mock is stateless, answers domain/contact/host commands with success and no response data, and doesn’t support poll. So it tests connection handling, framing and error paths, not parsing of registry responses. Repo: https://github.com/riftcell/epp-test

Would that be useful for epp-client’s CI? If so, I’d gladly add whatever responses or scenarios you’d want, for example resData for info commands. If you already cover this, I’d love to hear how.

Thanks,
RiftCell