Fix incorrect body length if has Chinese characters in the content.

#47

Author: chronoxor

.appveyor.yml

@@ -1,5 +1,5 @@
 # Specify version format
-version: "3.0.4.{build}"
+version: "3.0.5.{build}"
 
 # Image to use
 image: Visual Studio 2019

source/NetCoreServer/HttpRequest.cs

@@ -239,8 +239,10 @@ public HttpRequest AddCookie(string name, string value)
         /// <param name="body">Body string content (default is "")</param>
         public HttpRequest SetBody(string body = "")
         {
+            int length = string.IsNullOrEmpty(body) ? 0 : Encoding.UTF8.GetByteCount(body);
+
             // Append content length header
-            SetHeader("Content-Length", body.Length.ToString());
+            SetHeader("Content-Length", length.ToString());
 
             _cache.Append("\r\n");
 
@@ -249,8 +251,8 @@ public HttpRequest SetBody(string body = "")
             // Append the HTTP request body
             _cache.Append(body);
             _bodyIndex = index;
-            _bodySize = body.Length;
-            _bodyLength = body.Length;
+            _bodySize = length;
+            _bodyLength = length;
             _bodyLengthProvided = true;
             return this;
         }

source/NetCoreServer/HttpResponse.cs

@@ -459,8 +459,10 @@ public HttpResponse SetCookie(string name, string value, int maxAge = 86400, str
         /// <param name="body">Body string content (default is "")</param>
         public HttpResponse SetBody(string body = "")
         {
+            int length = string.IsNullOrEmpty(body) ? 0 : Encoding.UTF8.GetByteCount(body);
+
             // Append content length header
-            SetHeader("Content-Length", body.Length.ToString());
+            SetHeader("Content-Length", length.ToString());
 
             _cache.Append("\r\n");
 
@@ -469,8 +471,8 @@ public HttpResponse SetBody(string body = "")
             // Append the HTTP response body
             _cache.Append(body);
             _bodyIndex = index;
-            _bodySize = body.Length;
-            _bodyLength = body.Length;
+            _bodySize = length;
+            _bodyLength = length;
             _bodyLengthProvided = true;
             return this;
         }

source/NetCoreServer/NetCoreServer.csproj

@@ -2,9 +2,9 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.1</TargetFramework>
-    <Version>3.0.4</Version>
+    <Version>3.0.5</Version>
     <Authors>Ivan Shynkarenka</Authors>
-    <Copyright>Copyright (c) 2019 Ivan Shynkarenka</Copyright>
+    <Copyright>Copyright (c) 2019-2020 Ivan Shynkarenka</Copyright>
     <RepositoryUrl>https://github.com/chronoxor/NetCoreServer</RepositoryUrl>
     <Description>Ultra fast and low latency asynchronous socket server &amp; client C# .NET Core library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution</Description>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>