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-rw-r--r--cpp/src/qpid/SessionState.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/cpp/src/qpid/SessionState.cpp b/cpp/src/qpid/SessionState.cpp
index 4b92b4968f..ac75b5c5ff 100644
--- a/cpp/src/qpid/SessionState.cpp
+++ b/cpp/src/qpid/SessionState.cpp
@@ -147,7 +147,7 @@ void SessionState::senderRecordKnownCompleted() {
void SessionState::senderConfirmed(const SessionPoint& confirmed) {
if (confirmed > sender.sendPoint)
- throw InvalidArgumentException(QPID_MSG(getId() << ": confirmed commands not yet sent."));
+ throw InvalidArgumentException(QPID_MSG(getId() << ": confirmed < " << confirmed << " but only sent < " << sender.sendPoint));
QPID_LOG(debug, getId() << ": sender confirmed point moved to " << confirmed);
ReplayList::iterator i = sender.replayList.begin();
while (i != sender.replayList.end() && sender.replayPoint.command < confirmed.command) {
@@ -169,7 +169,7 @@ void SessionState::senderCompleted(const SequenceSet& commands) {
QPID_LOG(debug, getId() << ": sender marked completed: " << commands);
sender.incomplete -= commands;
// Completion implies confirmation but we don't handle out-of-order
- // confirmation, so confirm only the first contiguous range of commands.
+ // confirmation, so confirm up to the end of the first contiguous range of commands.
senderConfirmed(SessionPoint(commands.rangesBegin()->end()));
}