[bug] request timeout on large files
I have a static site being served through Jester and I'm experiencing a bug where upon a request made to a large file, the rest times out. I've observed the following behaviors:

`0.1.1`: Request times out, the webserver stops responding
`devel`: Request times out, after the request times out the webserver will start responding again, but for the duration of the request it isn't responsive.


The file in question is ~550MB. The described behavior happens regardless of the type of request being made (tested with both `GET` and `HEAD`).


The code for the webserver is here: https://github.com/samdmarshall/pewpewthespells-com/blob/master/ritual.nim