feat: 防火墙查询

lib/core/utils/scan/scan.go

@@ -0,0 +1,31 @@
+package scan
+
+import (
+	"net"
+	"strconv"
+)
+
+func ScanPort(port int) bool {
+	ln, err := net.Listen("tcp", ":"+strconv.Itoa(port))
+	if err != nil {
+		return true
+	}
+	defer ln.Close()
+	return false
+}
+
+func ScanUDPPort(port int) bool {
+	ln, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: port})
+	if err != nil {
+		return true
+	}
+	defer ln.Close()
+	return false
+}
+
+func ScanPortWithProto(port int, proto string) bool {
+	if proto == "udp" {
+		return ScanUDPPort(port)
+	}
+	return ScanPort(port)
+}