supporting serving an index.html for directories

[MartinNowak]

No description provided.

[s-ludwig]

I wonder if it makes sense to define an DirectoryServeMode enum instead of the bool field, so that we could later for example add directory listing support. An alternative (or possible addition) could also be to just provide a directoryHandler delegate for user defined responses. I didn't have practical use for either of these, so I'm a bit unclear about which would be the best design, what do you think?

[MartinNowak]

Callback sounds good, will look into it.

[MartinNowak]

The callback solution was a bit messy (might render a page or suggest a different path) and we would have to provide default implementations for an index.html and an autoindex callback anyhow, so I went with the enum for now. It should also possible to use an URLRouter and handle directories as fallthrough.

[Temtaime]

options = (-int(val) ^ options) & HTTPFileServerOption.failIfNotFound;
Shorter and without branching.

[s-ludwig]

Seems a little too cryptic for too little benefit, IMO. In cases where not both is possible, I personally usually favor the clearer and more readable variant over the more concise one.