性能优化

v2rayN/v2rayN/Base/DownloaderHelper.cs

@@ -6,13 +6,9 @@ namespace v2rayN.Base
 {
     internal class DownloaderHelper
     {
-        private static readonly Lazy<DownloaderHelper> _instance = new Lazy<DownloaderHelper>(() => new());
+        private static readonly Lazy<DownloaderHelper> _instance = new(() => new());
         public static DownloaderHelper Instance => _instance.Value;
 
-        public DownloaderHelper()
-        {
-        }
-
         public async Task<string?> DownloadStringAsync(IWebProxy webProxy, string url, string? userAgent, int timeout)
         {
             if (string.IsNullOrEmpty(url))
@@ -44,7 +40,6 @@ namespace v2rayN.Base
                 }
             };
 
-            string text = string.Empty;
             using var downloader = new DownloadService(downloadOpt);
             downloader.DownloadFileCompleted += (sender, value) =>
             {
@@ -55,11 +50,10 @@ namespace v2rayN.Base
             };
             using var stream = await downloader.DownloadFileTaskAsync(address: url, cancellationToken: cancellationToken.Token);
             using StreamReader reader = new(stream);
-            text = reader.ReadToEnd();
 
             downloadOpt = null;
 
-            return text;
+            return reader.ReadToEnd();
         }
 
 
@@ -132,11 +126,11 @@ namespace v2rayN.Base
         {
             if (string.IsNullOrEmpty(url))
             {
-                throw new ArgumentNullException("url");
+                throw new ArgumentNullException(nameof(url));
             }
             if (string.IsNullOrEmpty(fileName))
             {
-                throw new ArgumentNullException("fileName");
+                throw new ArgumentNullException(nameof(fileName));
             }
             if (File.Exists(fileName))
             {

v2rayN/v2rayN/Handler/ShareHandler.cs

@@ -268,7 +268,6 @@ namespace v2rayN.Handler
         /// <summary>
         /// 从剪贴板导入URL
         /// </summary>
-        /// <param name="fileName"></param>
         /// <param name="msg"></param>
         /// <returns></returns>
         public static ProfileItem ImportFromClipboardConfig(string clipboardData, out string msg)
@@ -626,7 +625,7 @@ namespace v2rayN.Handler
 
 
         private static readonly Regex StdVmessUserInfo = new Regex(
-            @"^(?<network>[a-z]+)(\+(?<streamSecurity>[a-z]+))?:(?<id>[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})$");
+            @"^(?<network>[a-z]+)(\+(?<streamSecurity>[a-z]+))?:(?<id>[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})$", RegexOptions.Compiled);
 
         private static ProfileItem ResolveSocks(string result)
         {

v2rayN/v2rayN/Tool/FileManager.cs

@@ -10,8 +10,7 @@ namespace v2rayN.Tool
         {
             try
             {
-                using FileStream fs = new(fileName, FileMode.Create, FileAccess.Write);
-                fs.Write(content);
+                File.WriteAllBytes(fileName, content);
                 return true;
             }
             catch (Exception ex)
@@ -51,7 +50,7 @@ namespace v2rayN.Tool
             catch (Exception ex)
             {
                 Utils.SaveLog(ex.Message, ex);
-                throw ex;
+                throw;
             }
         }
         public static bool ZipExtractToFile(string fileName, string toPath, string ignoredName)

v2rayN/v2rayN/Tool/Utils.cs

@@ -112,7 +112,7 @@ namespace v2rayN
         /// </summary>
         /// <param name="obj"></param>
         /// <returns></returns>
-        public static string ToJson(Object obj, bool indented = true)
+        public static string ToJson(object obj, bool indented = true)
         {
             string result = string.Empty;
             try
@@ -141,7 +141,7 @@ namespace v2rayN
         /// <param name="obj"></param>
         /// <param name="filePath"></param>
         /// <returns></returns>
-        public static int ToJsonFile(Object obj, string filePath, bool nullValue = true)
+        public static int ToJsonFile(object obj, string filePath, bool nullValue = true)
         {
             int result;
             try
@@ -200,11 +200,11 @@ namespace v2rayN
                 }
                 if (wrap)
                 {
-                    return string.Join("," + Environment.NewLine, lst.ToArray());
+                    return string.Join("," + Environment.NewLine, lst);
                 }
                 else
                 {
-                    return string.Join(",", lst.ToArray());
+                    return string.Join(",", lst);
                 }
             }
             catch (Exception ex)
@@ -223,7 +223,7 @@ namespace v2rayN
             try
             {
                 str = str.Replace(Environment.NewLine, "");
-                return new List<string>(str.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries));
+                return new List<string>(str.Split(',', StringSplitOptions.RemoveEmptyEntries));
             }
             catch (Exception ex)
             {
@@ -242,8 +242,9 @@ namespace v2rayN
             try
             {
                 str = str.Replace(Environment.NewLine, "");
-                List<string> list = new(str.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries));
-                return list.OrderBy(x => x).ToList();
+                List<string> list = new(str.Split(',', StringSplitOptions.RemoveEmptyEntries));
+                list.Sort();
+                return list;
             }
             catch (Exception ex)
             {