MqttCommand ICommandReader.Read(NetworkConnection connection)
{
var header = FixedHeader.Load(connection);
byte[] data = connection.ReadBytesOrFailAsync(header.RemainingLength).Await().Result;
return MqttCommand.Create(header, data);
}
public static FixedHeader Load(NetworkConnection connection)
{
byte firstByte = connection.ReadBytesOrFailAsync(1).Await().Result[0];
var header = new FixedHeader
{
Message = (CommandMessage) ((firstByte & 0xF0) >> 4),
Duplicate = (firstByte & 0x8) == 0x8,
QualityOfService = (QualityOfService) ((firstByte & 0x6) >> 1),
Retain = (firstByte & 0x1) == 0x1,
RemainingLength = VariableLengthInteger.Load(connection)
};
return header;
}
public static FixedHeader Load(NetworkConnection connection)
{
byte firstByte = connection.ReadBytesOrFailAsync(1).Await().Result[0];
var header = new FixedHeader
{
Message = (CommandMessage)((firstByte & 0xF0) >> 4),
Duplicate = (firstByte & 0x8) == 0x8,
QualityOfService = (QualityOfService)((firstByte & 0x6) >> 1),
Retain = (firstByte & 0x1) == 0x1,
RemainingLength = VariableLengthInteger.Load(connection)
};
return(header);
}
internal static int Load(NetworkConnection connection)
{
int result = 0;
int multiplier = 1;
int bytesRead = 0;
int digit;
do
{
digit = connection.ReadBytesOrFailAsync(1).Await().Result[0];
result += (digit & 127) * multiplier;
multiplier *= 128;
bytesRead++;
} while ((digit & 128) != 0 && (bytesRead < 4));
return(result);
}
