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-rw-r--r--cpp/include/qpid/messaging/Session.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/cpp/include/qpid/messaging/Session.h b/cpp/include/qpid/messaging/Session.h
index 66a4937e6b..9b373e2d8b 100644
--- a/cpp/include/qpid/messaging/Session.h
+++ b/cpp/include/qpid/messaging/Session.h
@@ -71,8 +71,11 @@ class Session : public qpid::messaging::Handle<SessionImpl>
/**
* Acknowledges all outstanding messages that have been received
* by the application on this session.
+ *
+ * @param sync if true, blocks until the acknowledgement has been
+ * processed by the server
*/
- QPID_CLIENT_EXTERN void acknowledge();
+ QPID_CLIENT_EXTERN void acknowledge(bool sync=false);
/**
* Rejects the specified message. This will prevent the message
* being redelivered.