we want to start using http4k for serving static s...

# http4k

[Jippe Holwerda]

we want to start using http4k for serving static single-page-app resources. For that, we would like to add etag headers to the response. However, the current EtagSupport filter doesn't create etag headers for streaming bodies, which makes sense, because calculating the etag hash requires reading the full body in memory.

However, in the ResourceLoadingHandler we know the resources are present on the filesystem, and a hash can be calculated easily. Some things to think about:
• resources can be present in a jar file
• ideally, an etag hash needs to be calculated only once per file
Any thoughts on this?