checkPortExist should consider TCP vs UDP

[rima71]

Is your feature request related to a problem?

checkPortExist currently ignores the transport protocol, treating TCP and UDP as identical.

This causes errors like:

"Something went wrong (Port already exists: 443)"

even when creating one TCP inbound and one UDP inbound on the same port.

Use case:

H3 (QUIC) opens a UDP port

H2 / HTTP1.1 opens a TCP port

Two separate inbounds are required for XHTTP [“h3”, “h2”, “http/1.1”] to work

Reference: XTLS/Xray-core#4320

Also, this blocks safe UDP inbounds (e.g., mKCP, WireGuard) on ports used by TCP inbounds.

I tried to modify DB, but Routing Rules does not account for protocol (TCP vs UDP)

Describe the solution you'd like

Update checkPortExist to check the protocol (TCP/UDP) when verifying port conflicts.
Routing Rules should list inbounds with protocol

Describe alternatives you've considered

Add an option to ignore checkPortExist, or checkPortExist can show only warning and continue

Checklist

• This feature report is written entirely in English.