chore: support IN-PORT rule

adapter/inbound/http.go

@@ -17,5 +17,9 @@ func NewHTTP(target socks5.Addr, source net.Addr, conn net.Conn) *context.ConnCo
 		metadata.SrcIP = ip
 		metadata.SrcPort = port
 	}
+	if ip, port, err := parseAddr(conn.LocalAddr().String()); err == nil {
+		metadata.InIP = ip
+		metadata.InPort = port
+	}
 	return context.NewConnContext(conn, metadata)
 }

adapter/inbound/https.go

@@ -16,5 +16,9 @@ func NewHTTPS(request *http.Request, conn net.Conn) *context.ConnContext {
 		metadata.SrcIP = ip
 		metadata.SrcPort = port
 	}
+	if ip, port, err := parseAddr(conn.LocalAddr().String()); err == nil {
+		metadata.InIP = ip
+		metadata.InPort = port
+	}
 	return context.NewConnContext(conn, metadata)
 }

adapter/inbound/packet.go

@@ -25,6 +25,12 @@ func NewPacket(target socks5.Addr, packet C.UDPPacket, source C.Type) *PacketAda
 		metadata.SrcIP = ip
 		metadata.SrcPort = port
 	}
+	if p, ok := packet.(C.UDPPacketInAddr); ok {
+		if ip, port, err := parseAddr(p.InAddr().String()); err == nil {
+			metadata.InIP = ip
+			metadata.InPort = port
+		}
+	}
 
 	return &PacketAdapter{
 		UDPPacket: packet,

adapter/inbound/socket.go

@@ -22,6 +22,14 @@ func NewSocket(target socks5.Addr, conn net.Conn, source C.Type) *context.ConnCo
 			metadata.SrcPort = port
 		}
 	}
+	localAddr := conn.LocalAddr()
+	// Filter when net.Addr interface is nil
+	if localAddr != nil {
+		if ip, port, err := parseAddr(localAddr.String()); err == nil {
+			metadata.InIP = ip
+			metadata.InPort = port
+		}
+	}
 
 	return context.NewConnContext(conn, metadata)
 }