From b67e64c3f92756cdb30eb7be0f15f59b1dee69db Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Tue, 13 Jul 2021 19:35:03 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Server/HttpServer.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/websocket-sharp/Server/HttpServer.cs b/websocket-sharp/Server/HttpServer.cs
index dfda88e0..fe2fc4ed 100644
--- a/websocket-sharp/Server/HttpServer.cs
+++ b/websocket-sharp/Server/HttpServer.cs
@@ -283,8 +283,11 @@ namespace WebSocketSharp.Server
       if (address == null)
         throw new ArgumentNullException ("address");
 
-      if (!address.IsLocal ())
-        throw new ArgumentException ("Not a local IP address.", "address");
+      if (!address.IsLocal ()) {
+        var msg = "It is not a local IP address.";
+
+        throw new ArgumentException (msg, "address");
+      }
 
       if (!port.IsPortNumber ()) {
         var msg = "It is less than 1 or greater than 65535.";