/// <summary>
/// Gets the frame bytes.
/// </summary>
/// <returns></returns>
public Stream GetFrameBytes(bool compress, int compressTreshold)
{
var buffer = new PoolMemoryStream();
buffer.WriteByte((byte)Version);
buffer.WriteByte((byte)Flags);
buffer.WriteByte(unchecked ((byte)Stream));
buffer.WriteByte((byte)OpCode);
//write length placeholder
buffer.WriteInt(0);
//write uncompressed data
WriteData(buffer);
//compress if allowed, and buffer is large enough to compress
if (compress && buffer.Length > compressTreshold + 8)
{
buffer.Position = 8;
//compress data to temporary stream
using (var compressed = new PoolMemoryStream())
{
//compress the data to the buffer
int length = Compressor.Compress(buffer, compressed);
//add compression to flags
Flags |= FrameFlags.Compression;
buffer.Position = 1;
buffer.WriteByte((byte)Flags);
//overwrite data with compressed data
buffer.Position = 8;
compressed.Position = 0;
compressed.CopyTo(buffer);
buffer.SetLength(length + 8);
}
}
//overwrite length with real value
buffer.Position = 4;
buffer.WriteInt((int)buffer.Length - 8);
//reset buffer position
buffer.Position = 0;
//return the buffer
return(buffer);
}
public static void EncodeRequest(Request request, Stream outputStream)
{
var header = new byte[HeaderLength];
header.WriteUShort(Magic);
header[2] = RequestFlag | HessianSerialize;
if (request.IsEvent)
{
header[2] |= EventFlag;
}
if (request.IsTwoWay)
{
header[2] |= TwowayFlag;
}
header.WriteLong(request.RequestId, 4);
using (var dataStream = new PoolMemoryStream())
{
var output = new Hessian2Writer(dataStream);
if (request.IsEvent)
{
output.WriteNull();
}
else
{
output.WriteString("2.0.0");
output.WriteObject(request.Service);
output.WriteObject(request.Version);
output.WriteObject(request.MethodName);
output.WriteString(request.ParameterTypeInfo);
if (request.Arguments != null && request.Arguments.Length > 0)
{
foreach (var arg in request.Arguments)
{
output.WriteObject(arg);
}
}
output.WriteObject(request.Attachments);
}
header.WriteInt((int)dataStream.Length, 12);
outputStream.Write(header, 0, header.Length);
dataStream.CopyTo(outputStream);
}
}