/// <summary>
/// Serializes the control frame.
/// </summary>
/// <param name="frame">The frame.</param>
/// <returns>Serialized control frame.</returns>
private byte[] SerializeControlFrame(ControlFrame frame)
{
var byteList = new List <byte>();
byteList.Add((byte)(((frame.Version & 0xFF00) >> 8) | 0x80));
byteList.Add((byte)(frame.Version & 0x00FF));
byteList.Add((byte)(((Int16)frame.Type & 0xFF00) >> 8));
byteList.Add((byte)((Int16)frame.Type & 0x00FF));
byteList.AddRange(BinaryHelper.Int32ToBytes(frame.StreamId));
var headersArray = new byte[0];
switch (frame.Type)
{
case FrameType.SynStream:
byteList.Add(Convert.ToByte(frame.Flags | (frame.IsFinal ? 0x01 : 0x00)));
byteList.Add(Convert.ToByte(frame.Priority >> 5));
byteList.Add(Unused);
byteList.Add(Unused);
headersArray = SerializeControlFrameHeaders(frame.Headers);
break;
case FrameType.RTS:
byteList.AddRange(BinaryHelper.Int32ToBytes((int)frame.StatusCode));
break;
case FrameType.SynReply:
byteList.Add(frame.Flags);
byteList.Add(Unused);
byteList.Add(Unused);
byteList.Add(Unused);
headersArray = SerializeControlFrameHeaders(frame.Headers);
break;
case FrameType.CreditUpdate:
byteList.AddRange(BinaryHelper.Int64ToBytes(((CreditUpdateFrame)frame).CreditAddition));
break;
}
if (headersArray.Length > 0)
{
ProcessorRun(ref headersArray, DirectionProcessType.Outbound, frame.Flags);
}
byteList.AddRange(headersArray);
return(byteList.ToArray());
}
private byte[] SerializeControlFrameHeaders(SMHeaders frameHeaders)
{
var headers = new List <byte>();
foreach (KeyValuePair <string, string> pair in frameHeaders)
{
byte[] nameBin = Encoding.UTF8.GetBytes(pair.Key);
headers.AddRange(BinaryHelper.Int32ToBytes(nameBin.Length));
headers.AddRange(nameBin);
byte[] valBin = Encoding.UTF8.GetBytes(pair.Value);
headers.AddRange(BinaryHelper.Int32ToBytes(valBin.Length));
headers.AddRange(valBin);
}
return(headers.ToArray());
}
/// <summary>
/// Parses HTTP header of SM data frame.
/// </summary>
/// <param name="frame">The frame.</param>
/// <param name="data">The data.</param>
private static void ParseDataFrameHeader(ref DataFrame frame, byte[] data)
{
frame.StreamId = BinaryHelper.Int32FromBytes(new ArraySegment <byte>(data, 0, 4), 0);
frame.Flags = data[4];
frame.IsFinal = (frame.Flags & 0x01) != 0;
}