Block a user
Default UDP port to something
Needs to be less than 65,535, so I picked 55555 as a meaningless default.
Need to fix this logic though: w1cdn/mwtchahrd#1 (comment)
Pass UDP data out of mwtchahrd structured as JSON
The logic here still isn't great, because although the UDP connection doesn't get set up if you don't set the port to something other than 55555, handle_frame() still tries to send the UDP packets.
Parse packets here or in FARPN UDP Server?
Pass UDP data out of mwtchahrd