private void ReaderBuffer(ReadOnlySpan <byte> buffer, Socket socket, SocketReceiveMessageFromResult receiveMessageFromResult)
{
try
{
var package = JT1078Serializer.Deserialize(buffer);
package.SIM = package.SIM.TrimStart('0');
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace($"[Accept Hex {receiveMessageFromResult.RemoteEndPoint}]:{buffer.ToArray().ToHexString()}");
}
var session = SessionManager.TryLink(package.SIM, socket, receiveMessageFromResult.RemoteEndPoint);
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation($"[Connected]:{receiveMessageFromResult.RemoteEndPoint}");
}
if (jT1078UseType == JT1078UseType.Queue)
{
jT1078MsgProducer.ProduceAsync(package.SIM, buffer.ToArray());
}
else
{
jT1078PackageProducer.ProduceAsync(package.SIM, package);
}
}
catch (NotImplementedException ex)
{
Logger.LogError(ex.Message);
}
#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, JT1078TcpSession session, out SequencePosition consumed, out SequencePosition examined)
{
consumed = buffer.Start;
examined = buffer.End;
if (buffer.Length < 15)
{
throw new ArgumentException("not JT1078 package");
}
SequenceReader <byte> seqReader = new SequenceReader <byte>(buffer);
long totalConsumed = 0;
while (!seqReader.End)
{
if ((seqReader.Length - seqReader.Consumed) < 15)
{
throw new ArgumentException("not JT1078 package");
}
var header = seqReader.Sequence.Slice(seqReader.Consumed, 4);
var headerValue = BinaryPrimitives.ReadUInt32BigEndian(header.FirstSpan);
if (JT1078Package.FH == headerValue)
{
//sim
var sim = ReadBCD(seqReader.Sequence.Slice(seqReader.Consumed + 8, 6).FirstSpan, 12);
//根据数据类型处理对应的数据长度
seqReader.Advance(15);
if (seqReader.TryRead(out byte dataType))
{
JT1078Label3 label3 = new JT1078Label3(dataType);
int bodyLength = 0;
//透传的时候没有该字段
if (label3.DataType != JT1078DataType.透传数据)
{
//时间戳
bodyLength += 8;
}
//非视频帧时没有该字段
if (label3.DataType == JT1078DataType.视频I帧 ||
label3.DataType == JT1078DataType.视频P帧 ||
label3.DataType == JT1078DataType.视频B帧)
{
//上一个关键帧 + 上一帧 = 2 + 2
bodyLength += 4;
}
seqReader.Advance(bodyLength);
var bodyLengthFirstSpan = seqReader.Sequence.Slice(seqReader.Consumed, 2).FirstSpan;
//数据体长度
seqReader.Advance(2);
bodyLength = BinaryPrimitives.ReadUInt16BigEndian(bodyLengthFirstSpan);
//数据体
seqReader.Advance(bodyLength);
if (string.IsNullOrEmpty(sim))
{
sim = session.SessionID;
}
SessionManager.TryLink(sim, session);
var package = seqReader.Sequence.Slice(totalConsumed, seqReader.Consumed - totalConsumed);
try
{
if (jT1078UseType == JT1078UseType.Queue)
{
jT1078MsgProducer.ProduceAsync(sim, package.ToArray());
}
else
{
jT1078PackageProducer.ProduceAsync(sim, JT1078Serializer.Deserialize(package.FirstSpan));
}
}
catch (Exception ex)
{
Logger.LogError(ex, $"[Parse]:{package.ToArray().ToHexString()}");
}
totalConsumed += (seqReader.Consumed - totalConsumed);
if (seqReader.End)
{
break;
}
}
}
}
if (seqReader.Length == totalConsumed)
{
examined = consumed = buffer.End;
}
else
{
consumed = buffer.GetPosition(totalConsumed);
}
}
