Add NDIS inbound

common/conntrack/tracker.go

@@ -0,0 +1,32 @@
+package conntrack
+
+import (
+	"net"
+	"net/netip"
+	"time"
+
+	N "github.com/sagernet/sing/common/network"
+)
+
+// TODO: add to N
+type AbstractPacketConn interface {
+	Close() error
+	LocalAddr() net.Addr
+	SetDeadline(t time.Time) error
+	SetReadDeadline(t time.Time) error
+	SetWriteDeadline(t time.Time) error
+}
+
+type Tracker interface {
+	NewConn(conn net.Conn) (net.Conn, error)
+	NewPacketConn(conn net.PacketConn) (net.PacketConn, error)
+	NewConnEx(conn net.Conn) (N.CloseHandlerFunc, error)
+	NewPacketConnEx(conn AbstractPacketConn) (N.CloseHandlerFunc, error)
+	CheckConn(source netip.AddrPort, destination netip.AddrPort) bool
+	CheckPacketConn(source netip.AddrPort) bool
+	AddPendingDestination(destination netip.AddrPort) func()
+	CheckDestination(destination netip.AddrPort) bool
+	KillerCheck() error
+	Count() int
+	Close()
+}