protected override void HandleTtsOffsetStartFrame(SaiTtsFrameOffsetStart startFrame)
{
// 收到OffsetStart，停止握手超时计时器。
LogUtility.Info(string.Format("{0}: 收到的OffsetStart报文. 停止Tres_start计时器。",
this.Context.RsspEP.ID));
this.Context.StopHandshakeTimer();
// 发送OffsetAnswer1
var seqNo = (ushort)this.Context.SeqNoManager.GetAndUpdateSendSeq();
var offsetAnswer1 = new SaiTtsFrameOffsetAnswer1(seqNo,
TripleTimestamp.CurrentTimestamp,
this.TTS.RemoteLastSendTimestamp,
this.TTS.LocalLastRecvTimeStamp, 0);
this.Context.NextLayer.SendUserData(offsetAnswer1.GetBytes());
LogUtility.Info(string.Format("{0}: 发送OffsetAnswer1.", this.Context.RsspEP.ID));
// 更新时间戳
this.Calculator.ResTimestamp2 = offsetAnswer1.SenderTimestamp;
// 启动Tres_start计时器，等待OffsetAnswer2报文。
LogUtility.Info(string.Format("{0}: 启动Tres_start计时器，等待OffsetAnswer2报文。", this.Context.RsspEP.ID));
this.Context.StartHandshakeTimer();
// 更新状态。
this.Context.CurrentState = new TtsWaitingforAnswer2State(this);
}
public static SaiFrame Parse(byte[] bytes)
{
SaiFrame theFrame = null;
var theFrameType = (SaiFrameType)bytes[0];
if (theFrameType == SaiFrameType.TTS_OffsetStart)
{
theFrame = new SaiTtsFrameOffsetStart();
}
else if (theFrameType == SaiFrameType.TTS_OffsetAnswer1)
{
theFrame = new SaiTtsFrameOffsetAnswer1();
}
else if (theFrameType == SaiFrameType.TTS_OffsetAnswer2)
{
theFrame = new SaiTtsFrameOffsetAnswer2();
}
else if (theFrameType == SaiFrameType.TTS_OffsetEstimate)
{
theFrame = new SaiTtsFrameEstimate();
}
else if (theFrameType == SaiFrameType.TTS_OffsetEnd)
{
theFrame = new SaiTtsFrameOffsetEnd();
}
else if (theFrameType == SaiFrameType.TTS_AppData)
{
theFrame = new SaiTtsFrameAppData();
}
else if (theFrameType == SaiFrameType.EC_Start)
{
theFrame = new SaiEcFrameStart();
}
else if (theFrameType == SaiFrameType.EC_AppData)
{
theFrame = new SaiEcFrameApplication();
}
else if (theFrameType == SaiFrameType.EC_AppDataAskForAck)
{
theFrame = new SaiEcFrameAskForAck();
}
else if (theFrameType == SaiFrameType.EC_AppDataAcknowlegment)
{
theFrame = new SaiEcFrameAcknowlegment();
}
else
{
throw new InvalidOperationException(string.Format("无法解析指定的Sai帧，不可识别的类型{0}。", theFrameType));
}
theFrame.ParseBytes(bytes);
return(theFrame);
}
public void Test1()
{
var frameInital = new SaiTtsFrameOffsetStart();
frameInital.SequenceNo = 100;
frameInital.SenderTimestamp = 1000;
frameInital.SenderLastRecvTimestamp = 900;
frameInital.ReceiverLastSendTimestamp = 800;
frameInital.SenderCycle = 3000;
var bytes = frameInital.GetBytes();
var actual = SaiFrame.Parse(bytes) as SaiTtsFrameOffsetStart;
Assert.AreEqual(frameInital.FrameType, actual.FrameType);
Assert.AreEqual(frameInital.SequenceNo, actual.SequenceNo);
Assert.AreEqual(frameInital.SenderTimestamp, actual.SenderTimestamp);
Assert.AreEqual(frameInital.SenderLastRecvTimestamp, actual.SenderLastRecvTimestamp);
Assert.AreEqual(frameInital.ReceiverLastSendTimestamp, actual.ReceiverLastSendTimestamp);
Assert.AreEqual(frameInital.SenderCycle, actual.SenderCycle);
}
public override void HandleMaslConnected()
{
// 发送OffsetStart
var seqNo = (ushort)this.Context.SeqNoManager.GetAndUpdateSendSeq();
var offsetStart = new SaiTtsFrameOffsetStart(seqNo, TripleTimestamp.CurrentTimestamp, 0);
this.Context.NextLayer.SendUserData(offsetStart.GetBytes());
// 记录日志
LogUtility.Info(string.Format("{0}: 发送OffsetStart。", this.Context.RsspEP.ID));
// 更新时间戳
this.Calculator.InitTimestamp1 = offsetStart.SenderTimestamp;
// 启动计时器
LogUtility.Info(string.Format("{0}: 启动Tint_start计时器，等待OffsetAnswer1报文",
this.Context.RsspEP.ID));
this.Context.StartHandshakeTimer();
// 更新状态。
this.Context.CurrentState = new TtsWaitingforAnswer1State(this);
}
protected virtual void HandleTtsOffsetStartFrame(SaiTtsFrameOffsetStart frame)
{
LogUtility.Error(string.Format("{0}: {1}.{2} not implement!",
this.Context.RsspEP.ID, this.GetType().Name,
new StackFrame(0).GetMethod().Name.Split('.').Last()));
}
