feature request : UUID limitation

[megasoheilsh]

hello, i wanted to discuss something with you. One of the serious issues in the current Xray-core implementation is the lack of any limitations for UUID usage.

during the severe outages in Iran, many airport with low bandwidth connections (for example under 50 Mbps) and share their configuration with others. as a result, a single config can end up being used across an entire neighborhood or even a state. This creates serious problems both for the service provider and for the original user who is supposed to be using it.
Maybe one day it will be needed in China's internet outage!

I kindly ask you to consider implementing some form of restriction mechanisms.

required features:

Limiting the number of connections per UUID
Limiting the number of connections per UUID based on a specific number of source IP addresses (src addr)

@RPRX @Fangliding @patterniha