Multi-threading and path changing support

[alexpokotilo]

Lsquic is great and thanks for sharing this work!

I need to support many(thousands) http3 connections with huge output bandwidth(Gigs per seconds). Requests are small, replies are big.
I decided to read UDP socket in single listen thread, copy datagrams and peer/local addrs and forward to worker threads.
Each Worker has it's engine. I split clients based on hash or peer addr and port.
But what should I need to support changing path when peer addr becomes different ?
Thank in advance!

p.s
If my design may be simplified - I'm open to change it.

[alexpokotilo]

@dtikhonov
Dmitri, I'm sorry bothering you by direct mention, but could you please suggest what to do in this case ?

[alexpokotilo]

@dtikhonov,
just comfirm I need to use lsquic_cid_from_packet to route udp packet into right worker in case of changing route. It's all I need to hear. I got Idea from here https://github.com/litespeedtech/openlitespeed/blob/master/src/quic/udplistener.cpp