feat: 增加端口检测 优化删除逻辑

backend/utils/common/common.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	mathRand "math/rand"
+	"net"
 	"regexp"
 	"strconv"
 	"strings"
@@ -60,3 +61,13 @@ func RandStr(n int) string {
 	}
 	return string(b)
 }
+
+func ScanPort(port string) bool {
+
+	ln, err := net.Listen("tcp", ":"+port)
+	if err != nil {
+		return true
+	}
+	defer ln.Close()
+	return false
+}