Last week beta 39 of WireMock OSS v4 dropped. Along with the usual bug fixes and dependency updates, this release built on the messaging support already there to add support for Server Sent Events. This now opens up a wide range of testing capabilities and we are already making good use of this internally on the WireMock eng team. If you use SSE in your app I would love to hear what you think. I have updated the WireMock OSS docker example I have with a simple train departure board demo.

https://github.com/wiremock/wiremock/releases/tag/4.0.0-beta.39

https://github.com/leeturner/wiremock-standalone-docker-example