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#ifndef QPID_FRAMING_RESUMEHANDLER_H
#define QPID_FRAMING_RESUMEHANDLER_H
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/framing/AMQFrame.h"
#include "qpid/framing/FrameHandler.h"
#include "qpid/framing/SequenceNumber.h"
#include <deque>
namespace qpid {
namespace framing {
/**
* In/out handler pair for managing exactly-once session delivery.
* The same handler is used by client and broker.
* This handler only deals with TCP style SequenceNumber acks,
* not with fragmented SequenceNumberSet.
*
* THREAD UNSAFE. Expected to be used in a serialized context.
*/
class ResumeHandler : public FrameHandler::InOutHandler
{
public:
/** Received acknowledgement for sent frames up to and including sentOk */
void ackReceived(SequenceNumber sentOk);
/** What was the last sequence number we received. */
SequenceNumber getLastReceived() { return lastReceived; }
/** Resend the unacked frames to the output handler */
void resend();
protected:
void handleIn(AMQFrame&);
void handleOut(AMQFrame&);
private:
typedef std::deque<AMQFrame> Frames;
Frames unacked;
SequenceNumber lastReceived;
SequenceNumber lastSent;
};
}} // namespace qpid::common
#endif /*!QPID_FRAMING_RESUMEHANDLER_H*/
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