From 9d61ef1eb9781661683773263470496dc67a0cdd Mon Sep 17 00:00:00 2001
From: tan133 <31919449+tan133@users.noreply.github.com>
Date: Wed, 11 Oct 2017 23:57:55 +0800
Subject: [PATCH] fix a bug  get QueryString when ContentEncoding is not UTF-8

if ContentEncoding is not UTF-8,
InternalParseQueryString (_url.Query) will return value "?????" instead of the true value
---
 websocket-sharp/Net/HttpListenerRequest.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/websocket-sharp/Net/HttpListenerRequest.cs b/websocket-sharp/Net/HttpListenerRequest.cs
index 701128120..60162a303 100644
--- a/websocket-sharp/Net/HttpListenerRequest.cs
+++ b/websocket-sharp/Net/HttpListenerRequest.cs
@@ -343,8 +343,10 @@ public Version ProtocolVersion {
     /// </value>
     public NameValueCollection QueryString {
       get {
+        //fix bug, if ContentEncoding is GB2312 ,UrlDecode will return ??? 
+        //TODO,how to get paratermers when method is POST
         return _queryString ??
-               (_queryString = HttpUtility.InternalParseQueryString (_url.Query, Encoding.UTF8));
+               (_queryString = HttpUtility.InternalParseQueryString (_url.Query,this.ContentEncoding));
       }
     }