private void ReaderBuffer(ReadOnlySpan <byte> buffer, Socket socket, SocketReceiveMessageFromResult receiveMessageFromResult)
{
try
{
var package = Serializer.HeaderDeserialize(buffer, minBufferSize: 10240);
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"[Accept Hex {receiveMessageFromResult.RemoteEndPoint}]:{package.OriginalData.ToArray().ToHexString()}");
}
var session = SessionManager.TryLink(package.Header.TerminalPhoneNo, socket, receiveMessageFromResult.RemoteEndPoint);
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation($"[Connected]:{receiveMessageFromResult.RemoteEndPoint}");
}
MessageHandler.Processor(package, session);
}
catch (NotImplementedException ex)
{
Logger.LogError(ex.Message);
}
catch (JT808Exception ex)
{
Logger.LogError($"[HeaderDeserialize ErrorCode]:{ ex.ErrorCode},[ReaderBuffer]:{buffer.ToArray().ToHexString()}");
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
Logger.LogError(ex, $"[ReaderBuffer]:{ buffer.ToArray().ToHexString()}");
}
#pragma warning restore CA1031 // Do not catch general exception types
}
private void ReaderBuffer(ref ReadOnlySequence <byte> buffer, JT808TcpSession session, out SequencePosition consumed, out SequencePosition examined)
{
consumed = buffer.Start;
examined = buffer.End;
SequenceReader <byte> seqReader = new SequenceReader <byte>(buffer);
if (seqReader.TryPeek(out byte beginMark))
{
if (beginMark != JT808Package.BeginFlag)
{
throw new ArgumentException("Not JT808 Packages.");
}
}
byte mark = 0;
long totalConsumed = 0;
while (!seqReader.End)
{
if (seqReader.IsNext(JT808Package.BeginFlag, advancePast: true))
{
if (mark == 1)
{
ReadOnlySpan <byte> contentSpan = ReadOnlySpan <byte> .Empty;
try
{
contentSpan = seqReader.Sequence.Slice(totalConsumed, seqReader.Consumed - totalConsumed).FirstSpan;
//过滤掉不是808标准包（14）
//（头）1+（消息 ID ）2+（消息体属性）2+（终端手机号）6+（消息流水号）2+（检验码 ）1+（尾）1
if (contentSpan.Length > 14)
{
var package = Serializer.HeaderDeserialize(contentSpan, minBufferSize: 10240);
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"[Accept Hex {session.Client.RemoteEndPoint}]:{package.OriginalData.ToArray().ToHexString()}");
}
SessionManager.TryLink(package.Header.TerminalPhoneNo, session);
MessageHandler.Processor(package, session);
}
}
catch (NotImplementedException ex)
{
Logger.LogError(ex.Message);
}
catch (JT808Exception ex)
{
Logger.LogError($"[HeaderDeserialize ErrorCode]:{ ex.ErrorCode},[ReaderBuffer]:{contentSpan.ToArray().ToHexString()}");
}
totalConsumed += (seqReader.Consumed - totalConsumed);
if (seqReader.End)
{
break;
}
seqReader.Advance(1);
mark = 0;
}
mark++;
}
else
{
seqReader.Advance(1);
}
}
if (seqReader.Length == totalConsumed)
{
examined = consumed = buffer.End;
}
else
{
consumed = buffer.GetPosition(totalConsumed);
}
}