Maximum inner method packet length now precisely calculated in begin_session() methods too

lib/TTLS/include/Method.h

@@ -103,6 +103,17 @@ namespace eap
         ///
         method_defrag& operator=(_Inout_ method_defrag &&other);
 
+        /// \name Session management
+        /// @{
+
+        virtual void begin_session(
+            _In_        DWORD         dwFlags,
+            _In_  const EapAttributes *pAttributeArray,
+            _In_        HANDLE        hTokenImpersonateUser,
+            _In_opt_    DWORD         dwMaxSendPacketSize = MAXDWORD);
+
+        /// @}
+
         /// \name Packet processing
         /// @{