public static DefaultMessage FromBuffer(IBuffer buffer,
Func <IBuffer, int, int, ushort, object> messageBodyDecoder)
{
if (buffer.Remaining < DefaultMessageHeader.HeaderLength)
{
return(null);
}
int index = buffer.IndexOf(BitConverter.GetBytes(HeaderTag));
if (index != -1)
{
buffer.Position = index;
if (buffer.Remaining >= DefaultMessageHeader.HeaderLength)
{
int messageLength = BitConverter.ToInt32(
buffer.ByteArray, buffer.Position + 11);
if (buffer.Remaining >= DefaultMessageHeader.HeaderLength + messageLength)
{
DefaultMessageHeader header = new DefaultMessageHeader();
header.Tag = HeaderTag;
header.Version = buffer.ByteArray[buffer.Position + 4];
header.Type = BitConverter.ToUInt16(
buffer.ByteArray, buffer.Position + 5);
header.SubType = BitConverter.ToUInt16(
buffer.ByteArray, buffer.Position + 7);
header.Zip = BitConverter.ToBoolean(buffer.ByteArray, buffer.Position + 9);
header.Encrypted = BitConverter.ToBoolean(buffer.ByteArray, buffer.Position + 10);
header.Length = messageLength;
object obj = messageBodyDecoder(buffer,
buffer.Position + DefaultMessageHeader.HeaderLength, messageLength, header.Type);
buffer.Position += (DefaultMessageHeader.HeaderLength + messageLength);
return(new DefaultMessage
{
Header = header,
Obj = obj
});
}
}
}
else
{
buffer.Position = buffer.Limit;
}
return(null);
}
public DefaultMessage(object data, ushort type, ushort subType = 0, bool zip = false,
bool encrypted = false, uint tag = HeaderTag, byte version = Version)
{
Header = new DefaultMessageHeader()
{
Tag = HeaderTag,
Version = version,
Type = type,
SubType = subType,
Zip = zip,
Encrypted = encrypted
};
Obj = data;
}