chore: adjust directory structure

control/addr.go

@@ -0,0 +1,25 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) since 2023, mzz2017 <mzz@tuta.io>
+ */
+
+package control
+
+import (
+	"net"
+	"net/netip"
+	"strconv"
+)
+
+func RefineSourceToShow(src netip.AddrPort, dAddr netip.Addr) (srcToShow string) {
+	if src.Addr() == dAddr {
+		// If nothing else, this means this packet is sent from localhost.
+		return net.JoinHostPort("localhost", strconv.Itoa(int(src.Port())))
+	} else {
+		return RefineAddrPortToShow(src)
+	}
+}
+
+func RefineAddrPortToShow(addrPort netip.AddrPort) (srcToShow string) {
+	return net.JoinHostPort(net.IP(addrPort.Addr().AsSlice()).String(), strconv.Itoa(int(addrPort.Port())))
+}