feat: 兼容舊版 .Net

Author: arenchen

src/Netcorext.Auth.Core/Helpers/IpHelper.cs

@@ -63,7 +63,7 @@ public static (long BeginRange, long EndRange, long Mask) ParseCidrToRange(strin
 
         if (cidrIpParts.Length != 4) return default;
 
-        var cidrIpBytes = cidrIpParts.Reverse().Select(byte.Parse).ToArray();
+        var cidrIpBytes = Reverse(cidrIpParts).Select(byte.Parse).ToArray();
 
         var cidrIpLong = BitConverter.ToInt32(cidrIpBytes, 0);
 
@@ -111,4 +111,10 @@ public static (IPAddress BeginIp, IPAddress EndIp, IPAddress Mask) ParseCidrToIp
 
         return (beginIp, endIp, maskIp);
     }
+
+    private static T[] Reverse<T>(T[] input)
+    {
+        Array.Reverse(input);
+        return input;
+    }
 }