public PackageHelper(BinInfo info, IDownloadSender downloadSender)
{
_binInfo = info;
DownloadSender = downloadSender;
var rest = info.BinConfigFileLength % info.PackageBinLength;
var fullPackageCount = info.BinConfigFileLength / info.PackageBinLength;
var totalPackageCount = rest == 0 ? (ushort)fullPackageCount : (ushort)(fullPackageCount + 1);
_package = new FirmwareUpdatePackage(totalPackageCount, info);
_timerOutTimer = new Timer
{
Interval = _binInfo.TimeOut * 1000,
Enabled = true
};
_timerOutTimer.Elapsed += (sender, args) =>
{
_isDownloading = false;
DownloadSender.Received -= Received;
DownloadInterrupt(new DownloadInterruptedEventArgs
{
Message = "等待回复超时。"
});
_timerOutTimer.Stop();
};
}
private bool CheckPayloadDataContent(FirmwareUpdatePackage package, out string message)
{
message = string.Empty;
if (package == null)
{
return(true);
}
if (package.PayloadData[0] != _lastSendPayloadData[0])
{
message = "文件发起者ID不匹配。";
return(false);
}
if (package.PayloadData[0] != _lastSendPayloadData[0])
{
message = "文件接收者ID不匹配。";
return(false);
}
if (!package.PayloadData.SubArray(2, 2).SequenceEqual(_lastSendPayloadData.SubArray(2, 2)))
{
message = "当前包号不匹配。";
return(false);
}
if (!package.PayloadData.SubArray(4, 2).SequenceEqual(_lastSendPayloadData.SubArray(4, 2)))
{
message = "总包号不匹配。";
return(false);
}
if (!package.PayloadData.SubArray(6, 2).SequenceEqual(_lastSendPayloadData.SubArray(6, 2)))
{
message = "本包固件长度不匹配。";
return(false);
}
if (!package.PayloadData.SubArray(8, 4).SequenceEqual(_lastSendPayloadData.SubArray(8, 4)))
{
message = "固件文件总长度不匹配。";
return(false);
}
if (!package.PayloadData.SubArray(12, 2).SequenceEqual(_lastSendPayloadData.SubArray(12, 2)))
{
message = "超时时间不匹配。";
return(false);
}
return(true);
}
private void Received(DownloadSenderReceivedArgs e)
{
if (!_isDownloading)
{
return;
}
LastReceiveDateTime = DateTime.Now;
LastReceiveByteCount = e.ReceiveContent.Length;
TotalReceiveByteCount += LastReceiveByteCount;
if (e.Package.PackageStatus == PackageStatus.DecodeCompleted)
{
if (e.Package.StatusCode != 0)
{
DownloadInterrupt(new DownloadInterruptedEventArgs
{
Message = $"数据下载错误，错误信息：{e.Package.Description}。"
});
}
else if (!CheckPayloadDataContent(e.Package, out var msg))
{
DownloadInterrupt(new DownloadInterruptedEventArgs
{
Message = msg
});
}
else
{
_lastReceivedPackage = e.Package;
Send();
}
}
else if (e.Package.PackageStatus == PackageStatus.CrcCheckFaild)
{
DownloadInterrupt(new DownloadInterruptedEventArgs
{
Message = $"接收到错误的协议包数据，错误原因：{e.Package.PackageStatus}，数据包：{e.Package.DecodeBuffer.ToHexString()}"
});
}
}
