Vapor: Add support for GZIP

[wildfiremedia]

Closed.

[andreasley]

Compression is a good idea, but this needs some thinking about. Off the top of my head:

• Header Accept-Encoding needs to be parsed to determine if the client supports compression (and if so, which one)
• Ability to configure which content types should be compressed (makes sense for text-based stuff like XML, JSON, SVG etc.; not so much for JPEG or videos)
• Compressed static content should be cached
• Cached compressed static content should be recreated automatically if the original file is modified

If you need a short-term solution, use nginx as a reverse proxy and let it do the compression with configuration like this:

gzip             on;
gzip_proxied     any;
gzip_types       text/css text/plain text/xml application/xml application/javascript application/x-javascript text/javascript application/json text/x-json;
gzip_vary        on;
gzip_disable     "msie6";

[andreasley]

compress text-based files to compile code

What do you mean by that? There's no such thing as compiled code for HTML, JavaScript, CSS, SVG etc.

However, integration with, for example, a LESS/SASS compiler or a JavaScript minifier could be considered.

[andreasley]

@proyb6 There's no compilation happening in your example. If welcome.html contains the UTF8 string <h1>Hello, world!</h1>, the content returned is identical.

Compression would happen afterwards in both cases.

[wildfiremedia]

Already have GZIP in middleware
https://github.com/vapor/gzip-provider/blob/master/Sources/gzip-vapor/GzipMiddleware.swift