Reuse of udp relay

[5andr0]

Thanks for making this open source!

Is this requesting a new socks5 udp relay server every time there's a different destination addr or source port? It would be nice if the udp relay is only requested once and then used for all different destinations since you can redirect to the right client or destination by the socks5 udp header. No need to have multiple relays open

[heiher]

The current practice is that one local source address:port pair corresponds to one connection/session, while one connection/session can communicate with multiple different destination address:port pairs.