public static async Task CopyToStorageFile(this IRandomAccessStream stream, IStorageFile file)
{
var buffer = await stream.ToBuffer();
await FileIO.WriteBufferAsync(file, buffer);
}
private async Task ProcessIncomingFrame(FrameParser.Frame frame)
{
switch (frame.opCode)
{
case FrameParser.OP_CONTINUATION:
await _stream.WriteAsync(frame.payload?.ToBuffer());
if (frame.isFinal)
{
var buffer = _stream.ToBuffer();
byte[] message = buffer.ToByteArray();
if (this.OnMessage != null)
{
this.OnMessage(this, new WebSocketMessageEventArgs(this.Control.MessageType, message));
}
this.ResetStream();
}
break;
case FrameParser.OP_TEXT:
if (frame.isFinal)
{
if (this.OnMessage != null)
{
this.OnMessage(this, new WebSocketMessageEventArgs(this.Control.MessageType, frame.payload));
}
}
else
{
if (_stream.Size != 0)
{
throw new IOException("no FIN frame");
}
this.Control.MessageType = WebSocketMessageType.Text;
await _stream.WriteAsync(frame.payload.ToBuffer());
}
break;
case FrameParser.OP_BINARY:
if (frame.isFinal)
{
if (this.OnMessage != null)
{
this.OnMessage(this, new WebSocketMessageEventArgs(this.Control.MessageType, frame.payload));
}
}
else
{
if (_stream.Size != 0)
{
throw new IOException("no FIN frame");
}
this.Control.MessageType = WebSocketMessageType.Binary;
await _stream.WriteAsync(frame.payload.ToBuffer());
}
break;
case FrameParser.OP_CLOSE:
int code = 0;
if (frame.payload.Length >= 2)
{
code = ((frame.payload[0] << 8) | (frame.payload[1] & 0xFF)) & 0xFFFF;
}
string reason = null;
if (frame.payload.Length > 2)
{
var temp = frame.payload.CopyOfRange(2, frame.payload.Length);
reason = Encoding.UTF8.GetString(temp, 0, temp.Length);
}
if (this.Closed != null)
{
this.Closed(this, new WebSocketClosedEventArgs(code, reason));
}
this.Disconnect();
break;
case FrameParser.OP_PING:
if (frame.payload.Length > 125)
{
throw new IOException("Ping payload too large");
}
byte[] data = FrameParser.BuildFrame(frame.payload, FrameParser.OP_PONG, -1, IS_CLIENT, true);
await SendFrame(data);
break;
case FrameParser.OP_PONG:
if (this.OnPong != null)
{
this.OnPong(this, frame.payload);
}
break;
}
}
public static async Task CopyToOutputStream(this IRandomAccessStream stream, IOutputStream output)
{
var buffer = await stream.ToBuffer();
await output.WriteAsync(buffer);
}
