public void Start()
{
IsStart = true;
reTryCount = 0;
ReceiveStage = YmodemReceiveStage.WaitForFileInfo;
SendStage = YmodemSendStage.WaitReceiveRequestFileInfo;
TransThread = new Thread(new ThreadStart(TransThreadHandler));
TransThread.IsBackground = true;
TransThread.Name = "YmodemTransThread";
TransThread.Start();
if (ymodemInfo.TransMode == TransmitMode.Receive)
{
if (StartReceive != null)
{
StartReceive(ymodemInfo, null);
}
}
}
void ReceiveHandler()
{
if (ReceiveStage == YmodemReceiveStage.WaitForFileInfo || ReceiveStage == YmodemReceiveStage.WaitForFirstPacket)
{
SendKEYC();
}
if (msgQueue.Count > 0)
{
YmodemMessage msg = msgQueue.Dequeue();
if (msg != null)
{
reTryCount = 0;
switch (msg.MessageType)
{
case YmodemMessageType.PACKET:
PacketEventArgs e = msg.Value as PacketEventArgs;
if (ReceiveStage == YmodemReceiveStage.WaitForFileInfo)
{
if (e.PacketNo == 0)
{
ReceiveStage = YmodemReceiveStage.WaitForFirstPacket;
SendACK();
if (ReceivedPacket != null)
{
ReceivedPacket(ymodemInfo, new PacketEventArgs(e.PacketNo, e.Packet));
}
}
//else
//{
// SendNAK();
//}
}
else if (ReceiveStage == YmodemReceiveStage.WaitForFirstPacket ||
ReceiveStage == YmodemReceiveStage.PacketReceiving)
{
if (ReceiveStage == YmodemReceiveStage.WaitForFirstPacket)
{
ReceiveStage = YmodemReceiveStage.PacketReceiving;
}
SendACK();
if (ReceivedPacket != null)
{
ReceivedPacket(ymodemInfo, new PacketEventArgs(e.PacketNo, e.Packet));
}
// 通知发下一包
if (SendNextPacket != null)
{
SendNextPacket(ymodemInfo, null);
}
}
break;
case YmodemMessageType.PACKET_ERROR:
SendNAK();
// 通知重发
if (ReSendPacket != null)
{
ReSendPacket(ymodemInfo, null);
}
break;
case YmodemMessageType.EOT:
SendACK();
// 通知完成
if (EndOfTransmit != null)
{
EndOfTransmit(ymodemInfo, null);
}
break;
case YmodemMessageType.CAN:
SendACK();
// 通知中止
if (AbortTransmit != null)
{
AbortTransmit(ymodemInfo, null);
}
break;
default:
break;
}
}
}
else
{
if (waitReceiveEvent.WaitOne(3000))
{
waitReceiveEvent.Reset();
}
else
{
reTryCount++;
if (reTryCount > RetryMax)
{
IsStart = false;
//通知接收超时
if (TransmitTimeOut != null)
{
TransmitTimeOut(ymodemInfo, null);
}
}
}
}
}