Send 404 error in case of compressed file not exists

[SunBlack]

Since revision 90fd9f5 you don't get anymore a 404 error in case your browser want to load a tile which not exists. Instead you get always a ERR_CONTENT_DECODING_FAILED (same message occurs in case tile data are not gzip compressed, so you don't see anymore if a tile couldn't be loaded because of tile data are missing or data are not compressed).

I could preorduce this issue with all gzip compressed files (b3dm, pnts, i3dm and cmpt).

[pjcozzi]

Thanks we'll look at this as part of #3241.

[pjcozzi]

@SunBlack does #3839 work for you?

[pjcozzi]

@SunBlack let me know if you run into any issues.

[SunBlack]

Well I had now time to test ist. In my opinion removing gzip compression isn't best solution - or isn't there another solution in case file not exists?

[pjcozzi]

Tiles can still be served pre-gzipped, we just don't pre-gzip the test data so it is easy for developers to work with.

[SunBlack]

My tiles are currently pre-zipped, but because of missing http header not extracted by browser. So maybe an it is possible to add an option to default server implementation, like --port, to enable compression support?

[pjcozzi]

That is a good idea that we can consider. In the meantime, you want to not pre-gzip or add a header like:

res.header('Content-Encoding', 'gzip');