public async ValueTask <ConnectionContext> AcceptAsync(CancellationToken cancellationToken = default)
{
ValueTask <TSocket> acceptTask;
lock (_gate)
{
if (_state > TransportThreadState.ClosingAccept)
{
return(null);
}
else if (_state < TransportThreadState.Started)
{
ThrowInvalidState();
}
acceptTask = _threadContext.AcceptAsync(cancellationToken);
}
return(await acceptTask);
}