public byte[] GetFrameBytesFromData(WebSocketOpCode opCode, byte[] payload, bool isLastFrame)
{
using (MemoryStream memoryStream = new MemoryStream())
{
byte finBitSetAsByte = isLastFrame ? (byte)0x80 : (byte)0x00;
byte byte1 = (byte)(finBitSetAsByte | (byte)opCode);
memoryStream.WriteByte(byte1);
// NB, dont set the mask flag. No need to mask data from server to client
// depending on the size of the length we want to write it as a byte, ushort or ulong
if (payload.Length < 126)
{
byte byte2 = (byte)payload.Length;
memoryStream.WriteByte(byte2);
}
else if (payload.Length <= ushort.MaxValue)
{
byte byte2 = 126;
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteUShort((ushort)payload.Length, memoryStream, false);
}
else
{
byte byte2 = 127;
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteULong((ulong)payload.Length, memoryStream, false);
}
memoryStream.Write(payload, 0, payload.Length);
byte[] buffer = memoryStream.ToArray();
return(buffer);
}
}
public void Write(WebSocketOpCode opCode, byte[] payload, bool isLastFrame)
{
// best to write everything to a memory stream before we push it onto the wire
// not really necessary but I like it this way
using (MemoryStream memoryStream = new MemoryStream())
{
byte finBitSetAsByte = isLastFrame ? (byte)0x80 : (byte)0x00;
byte byte1 = (byte)(finBitSetAsByte | (byte)opCode);
memoryStream.WriteByte(byte1);
// NB, set the mask flag if we are constructing a client frame
byte maskBitSetAsByte = _isClient ? (byte)0x80 : (byte)0x00;
// depending on the size of the length we want to write it as a byte, ushort or ulong
if (payload.Length < 126)
{
byte byte2 = (byte)(maskBitSetAsByte | (byte)payload.Length);
memoryStream.WriteByte(byte2);
}
else if (payload.Length <= ushort.MaxValue)
{
byte byte2 = (byte)(maskBitSetAsByte | 126);
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteUShort((ushort)payload.Length, memoryStream, false);
}
else
{
byte byte2 = (byte)(maskBitSetAsByte | 127);
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteULong((ulong)payload.Length, memoryStream, false);
}
// if we are creating a client frame then we MUST mack the payload as per the spec
if (_isClient)
{
byte[] maskKey = new byte[WebSocketFrameCommon.MaskKeyLength];
_random.NextBytes(maskKey);
memoryStream.Write(maskKey, 0, maskKey.Length);
// mask the payload
WebSocketFrameCommon.ToggleMask(maskKey, payload);
}
memoryStream.Write(payload, 0, payload.Length);
byte[] buffer = memoryStream.ToArray();
_stream.Write(buffer, 0, buffer.Length);
}
}
public static void SendWebSocket(int Index, WebSocketOpCode opCode, String Data, bool isLastFrame)
{
var array = Encoding.UTF8.GetBytes(Data);
var fromPayload = new ArraySegment <byte>(array);
MemoryStream memoryStream = new MemoryStream();
byte finBitSetAsByte = isLastFrame ? (byte)0x80 : (byte)0x00;
byte byte1 = (byte)(finBitSetAsByte | (byte)opCode);
memoryStream.WriteByte(byte1);
byte maskBitSetAsByte = (byte)0x00;
// depending on the size of the length we want to write it as a byte, ushort or ulong
if (fromPayload.Count < 126)
{
byte byte2 = (byte)(maskBitSetAsByte | (byte)fromPayload.Count);
memoryStream.WriteByte(byte2);
}
else if (fromPayload.Count <= ushort.MaxValue)
{
byte byte2 = (byte)(maskBitSetAsByte | 126);
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteUShort((ushort)fromPayload.Count, memoryStream, false);
}
else
{
byte byte2 = (byte)(maskBitSetAsByte | 127);
memoryStream.WriteByte(byte2);
BinaryReaderWriter.WriteULong((ulong)fromPayload.Count, memoryStream, false);
}
memoryStream.Write(fromPayload.Array, fromPayload.Offset, fromPayload.Count);
mapIndex_Client[Index].Socket.Client.Send(memoryStream.ToArray());
}
