public async Task Send(ChunkedStream message, CancellationToken token)
{
var length = message.Length;
ArraySegment <byte> chunk;
while (length > 0 && (chunk = message.StartRead()).Count > 0)
{
length -= chunk.Count;
if (length < 0)
{
throw new IndexOutOfRangeException();
}
using (var timeout = new CancellationTokenSource(SEND_TIMEOUT_MS))
using (var ctx = CancellationTokenSource.CreateLinkedTokenSource(token, timeout.Token))
await _socket.SendAsync(chunk, WebSocketMessageType.Binary, length == 0, ctx.Token);
message.EndRead(chunk, chunk.Count);
}
if (length != 0)
{
throw new InvalidOperationException();
}
}