private async Task OnCommandCreateStream(CommandMessage msg, CancellationToken cancel_token)
{
var new_stream_id = nextStreamId++;
var response = CommandMessage.Create(
objectEncoding,
this.Now,
msg.StreamId,
"_result",
msg.TransactionId,
null,
new AMF.AMFValue(new_stream_id)
);
if (msg.TransactionId!=0) {
await SendMessage(3, response, cancel_token);
}
}