public Response Push(Frame frame)
{
lock (Sync)
{
if (frame.Opcode == 0 && IncomingOpcode == 0)
{
return(Response.MessageNotStarted);
}
if (frame.Opcode != 0 && IncomingOpcode != 0)
{
return(Response.MessageNotFinished);
}
if (frame.Opcode != 0)
{
IncomingOpcode = frame.Opcode;
}
IncomingMessage.Write(frame.Masked ? Frame.FlipMask(frame.Payload, frame.Mask) : frame.Payload);
if (!frame.FIN)
{
return(Response.OK);
}
ulong length = IncomingMessage.BufferedReadable;
OnCollect?.Invoke(new Message(IncomingOpcode, IncomingMessage.Read(), length));
IncomingOpcode = 0;
return(Response.Reset);
}
}
protected override bool HandleWritable(byte[] source)
{
Buffer.Write(source); ulong buffered;
while ((buffered = Buffer.BufferedReadable) > 0)
{
switch (State)
{
case ParseState.Head:
if (buffered < 2)
{
return(true);
}
Incoming = new Frame(Reader.ReadUInt8(), Reader.ReadUInt8());
switch (Frame.GetXLengthSize(Incoming.Length))
{
case 0:
Incoming.ExtendedLength = Incoming.Length;
if (Incoming.Masked)
{
State = ParseState.Mask;
}
else if (Incoming.Length > 0)
{
State = ParseState.Payload;
}
else
{
Reset();
}
break;
case 2: State = ParseState.ExtendedLen2; break;
case 8: State = ParseState.ExtendedLen8; break;
}
break;
case ParseState.ExtendedLen2:
if (buffered < 2)
{
return(true);
}
Incoming.ExtendedLength = Reader.ReadUInt16LE();
if (Incoming.Masked)
{
State = ParseState.Mask;
}
else if (Incoming.ExtendedLength > 0)
{
State = ParseState.Payload;
}
else
{
Reset();
}
break;
case ParseState.ExtendedLen8:
if (buffered < 8)
{
return(true);
}
Incoming.ExtendedLength = Reader.ReadUInt64LE();
if (Incoming.Masked)
{
State = ParseState.Mask;
}
else if (Incoming.ExtendedLength > 0)
{
State = ParseState.Payload;
}
else
{
Reset();
}
break;
case ParseState.Mask:
if (buffered < 4)
{
return(true);
}
Incoming.Mask = Buffer.Read(4);
State = ParseState.Payload;
break;
case ParseState.Payload:
if (buffered < Incoming.ExtendedLength)
{
return(true);
}
Incoming.Payload = Buffer.Read(Incoming.ExtendedLength);
Reset();
break;
}
}
return(true);
}