fix object reference null error

Author: justcoding121

Titanium.Web.Proxy/Network/RetryPolicy.cs

@@ -44,23 +44,19 @@ internal async Task<RetryResult> ExecuteAsync(Func<TcpServerConnection, Task<boo
                     @continue = await action(currentConnection);
 
                 }
-                catch (T ex)
-                {
-                    await disposeConnection();
+                catch (Exception ex)
+                {     
                     exception = ex;
                 }
-                catch
-                {
-                    await disposeConnection();
-                    throw;
-                }
 
-                if(exception == null)
+                if(exception == null
+                    || !(exception is T))
                 {
                     break;
                 }
 
                 exception = null;
+                await disposeConnection();
                 attempts--;
             }
 

Titanium.Web.Proxy/RequestHandler.cs

@@ -267,7 +267,8 @@ await handleWebSocketUpgrade(httpCmd, args, request,
                             //between sessions without using it.
                             //Do not release authenticated connections for performance reasons.
                             //Otherwise it will keep authenticating per session.
-                            if (EnableConnectionPool && !connection.IsWinAuthenticated)
+                            if (EnableConnectionPool && connection!=null
+                                && !connection.IsWinAuthenticated)
                             {
                                 await tcpConnectionFactory.Release(connection);
                                 connection = null;