check the EnableSsl property in expliciont enpoint, too

Author: honfika

Titanium.Web.Proxy/ProxyServer.cs

@@ -316,7 +316,7 @@ public void SetAsSystemProxy(ExplicitProxyEndPoint endPoint, ProxyProtocolType p
 
             bool isHttp = (protocolType & ProxyProtocolType.Http) > 0;
             bool isHttps = (protocolType & ProxyProtocolType.Https) > 0;
-
+            
             if (isHttps)
             {
                 if (!endPoint.EnableSsl)

Titanium.Web.Proxy/RequestHandler.cs

@@ -97,7 +97,12 @@ private async Task HandleClient(ExplicitProxyEndPoint endPoint, TcpClient tcpCli
 
                     await clientStreamWriter.WriteResponseAsync(response);
 
-                    var clientHelloInfo = await SslTools.PeekClientHello(clientStream);
+                    ClientHelloInfo clientHelloInfo = null;
+                    if (endPoint.EnableSsl)
+                    {
+                        clientHelloInfo = await SslTools.PeekClientHello(clientStream);
+                    }
+
                     bool isClientHello = clientHelloInfo != null;
                     if (isClientHello)
                     {