Add a per-inbound "Route through Xray" toggle (off by default) plus an
optional outbound picker on MTProto inbounds. mtg only supports a SOCKS5
upstream, so when enabled the panel injects a loopback SOCKS bridge into
the generated Xray config — tagged with the inbound's own tag — and mtg
dials Telegram through it via a [network] proxies upstream. The router
then governs Telegram egress: matchable in the Routing tab, or forced to a
chosen outbound/balancer via the picker.
- mtproto: Instance carries RouteThroughXray + XrayRoutePort (in the
fingerprint); InstanceFromInbound parses them; renderConfig emits the
socks5 [network] upstream; freeLocalPort exported as FreeLocalPort.
- xray.go: injectMtprotoEgress appends the loopback SOCKS bridge and
prepends an optional inboundTag->outbound/balancer rule, hot-appliable
like injectPanelEgress.
- inbound.go: backend-owned egress port persisted in settings, allocated
once and carried across edits (stored value wins); stripped with the
inert outboundTag when routing is off; allocation failure fails the save;
routed add/update/del force a config regen.
- mtproto_job: skip folding mtg metrics for routed inbounds (the bridge,
carrying the inbound tag, is metered by xray_traffic_job) to avoid
double-counting.
- frontend: toggle + outbound/balancer Select (useOutboundTags) on the
MTProto form; i18n keys for all locales.
MHSanaei