Should we add a DGRAM filter in the receiver for proxy-socket-udp

[bplessis-swi]

but we could also have an UNIX Datagram and we don't want to accept it right ?

I mean we only supposed to handle :

local
udp v4
udp v6
(maybe no proxyprotocol at all)

Right ?
Any other value on ProxyDatagramSocket is not expected, right ?
Because this is supposed to replace an existing DataGramSocket "transparently"
(maybe I missed something 🤔)

He if we checked before that udp v4 or v6 is used than there is not possible null value. (except in case of bug) and so test is not needed ?