Add native protocol service plugins

plugins/services/bacnet_test.go

@@ -0,0 +1,16 @@
+//go:build plugin_bacnet || !plugin_selective
+
+package services
+
+import "testing"
+
+func TestParseBACnetResponse(t *testing.T) {
+	banner, ok := parseBACnetResponse([]byte{0x81, 0x0a, 0x00, 0x08, 0x01, 0x20, 0x10, 0x00})
+	if !ok || banner != "BACnet I-Am response" {
+		t.Fatalf("unexpected bacnet banner: %q ok=%v", banner, ok)
+	}
+
+	if _, ok := parseBACnetResponse([]byte{0x81, 0x0a, 0x00, 0x05, 0x00}); ok {
+		t.Fatal("unexpected match for malformed bacnet packet")
+	}
+}