- TLS revised (again)

- TLS Session resumption issues resolved
- Credential prompt has "Remember" checkbox initially selected when credentials originate from Windows Credential Manager
- Last authentication attempt failure notice is more general and no longer insinuate user credentials are the likely cause of the failure
- Additional log messages added

lib/EAPBase/include/Credentials.h

@@ -54,6 +54,18 @@ namespace eap
 {
     class credentials : public config
     {
+    public:
+        ///
+        /// Credential source when combined
+        ///
+        enum  source_t {
+            source_unknown = -1, ///< Unknown source
+            source_cache = 0,    ///< Credentials were obtained from EAPHost cache
+            source_preshared,    ///< Credentials were set by method configuration
+            source_storage       ///< Credentials were loaded from Windows Credential Manager
+        };
+
+
     public:
         ///
         /// Constructs credentials
@@ -158,26 +170,6 @@ namespace eap
         /// Returns credential name (for GUI display).
         ///
         virtual winstd::tstring get_name() const;
-
-        ///
-        /// Combine credentials in the following order:
-        ///
-        /// 1. Cached credentials
-        /// 2. Pre-configured credentials
-        /// 3. Stored credentials
-        ///
-        /// \param[in] cred_cached    Cached credentials (optional, can be \c NULL)
-        /// \param[in] cfg            Method configuration
-        /// \param[in] pszTargetName  The name in Windows Credential Manager to retrieve credentials from (optional, can be \c NULL)
-        ///
-        /// \returns
-        /// - \c true  if credentials were set;
-        /// - \c false otherwise
-        ///
-        virtual bool combine(
-            _In_       const credentials       *cred_cached,
-            _In_       config_method_with_cred &cfg,
-            _In_opt_z_ LPCTSTR                 pszTargetName);
     };