2 files changed, 15 insertions, 0 deletions

diff --git a/include/opkele/consumer.h b/include/opkele/consumer.h
index 50ff692..c463787 100644
--- a/include/opkele/consumer.h
+++ b/include/opkele/consumer.h
@@ -68,4 +68,9 @@ namespace opkele {
              * association.
              *
+             * @note
+             * It may be a good idea to pre-expire associations shortly before
+             * their time is really up to avoid association expiry in the
+             * middle of negotiations.
+             *
              * @param server the OpenID server
              * @return the auto_ptr<> for the newly allocated association_t object
@@ -138,4 +143,5 @@ namespace opkele {
              * (supposedly checkid_immediate only)
              * @throw id_res_failed in case of failure
+             * @throw id_res_expired_on_delivery if the association expired before it could've been verified
              * @throw exception in case of other failures
              */
diff --git a/include/opkele/exception.h b/include/opkele/exception.h
index 753a818..2ff44b7 100644
--- a/include/opkele/exception.h
+++ b/include/opkele/exception.h
@@ -171,4 +171,13 @@ namespace opkele {
 
     /**
+     * thrown if the association has expired before it could've been verified.
+     */
+    class id_res_expired_on_delivery : public id_res_failed {
+        public:
+            id_res_expired_on_delivery(OPKELE_E_PARS)
+                : id_res_failed(OPKELE_E_CONS) { }
+    };
+
+    /**
      * openssl malfunction occured
      */