protected override void HandleData(byte[] data)
{
byte b; long len;
for (long i = 0; i < data.LongLength;)
{
switch (State)
{
case FrameParserState.Head1:
b = data[i++];
bool fin = Incoming.FIN = (b & 128) == 128;
bool rsv1 = Incoming.RSV1 = (b & 64) == 64;
bool rsv2 = Incoming.RSV2 = (b & 32) == 32;
bool rsv3 = Incoming.RSV3 = (b & 16) == 16;
Incoming.Opcode = (byte)(b - (fin ? 128 : 0) - (rsv1 ? 64 : 0) - (rsv2 ? 32 : 0) - (rsv3 ? 16 : 0));
State = FrameParserState.Head2;
break;
case FrameParserState.Head2:
b = data[i++];
bool masked = (b & 128) == 128;
if (masked)
{
Incoming.Mask = new byte[4];
}
long payloadLen = b - (masked ? 128 : 0);
if (payloadLen > 125)
{
Temp2 = new byte[payloadLen == 126 ? 2 : 8];
State = FrameParserState.ExtendedLen;
}
else
{
Incoming.Payload = new byte[payloadLen];
State = Incoming.Masked ? FrameParserState.Mask : FrameParserState.Payload;
}
break;
case FrameParserState.ExtendedLen:
len = Math.Min(Temp2.LongLength - Temp1, data.LongLength - i);
Frame.ArrayCopy(data, i, Temp2, Temp1, len);
Temp1 += len; i += len;
if (Temp2.LongLength != Temp1)
{
break;
}
Incoming.Payload = new byte[Temp1 == 8 ? BitConverter.ToUInt64(Temp2, 0) : BitConverter.ToUInt16(Temp2, 0)];
Temp1 = 0; Temp2 = null;
State = Incoming.Masked ? FrameParserState.Mask : FrameParserState.Payload;
break;
case FrameParserState.Mask:
len = Math.Min(4 - Temp1, data.LongLength - i);
Frame.ArrayCopy(data, i, Incoming.Mask, Temp1, len);
Temp1 += len; i += len;
if (Temp1 != 4)
{
break;
}
Temp1 = 0;
State = FrameParserState.Payload;
break;
case FrameParserState.Payload:
len = Math.Min(Incoming.PayloadLength - Temp1, data.LongLength - i);
Frame.ArrayCopy(data, i, Incoming.Payload, Temp1, len);
Temp1 += len; i += len;
if (Temp1 != Incoming.PayloadLength)
{
break;
}
if (Incoming.Masked)
{
Incoming.FlipMask();
}
PushIncoming();
State = FrameParserState.Head1;
Temp1 = 0;
break;
}
}
}
