I've submitted a ticket on this: http://bugzilla.xamarin.com/show_bug.cgi?id=1927
Igor On Sun, Nov 6, 2011 at 6:59 AM, Igor Russkih <iruss...@gmail.com> wrote: > >> We're wondering why you need polling access to the stream. >> InputStream.available() is documented as not being very useful: >> >> > I'm not sure why android's version of javadoc includes this passage. But > from common sense - the available() method's efficiency depends etirely on > the underlying implementation. And in case of network streams and bluetooth > streams (which are BTW essentially the same nature) - data availability > check is a common sence. Even .net's NetworkStream has its DataAvailable. > > I mean yes, think I can workaround this by creating a separate thread and > data queue (or using BeginRead), and essentially implementing my own > buffering logic and available() check. But thats just another layer over > the data stream abstraction - because network and bluetooth streams are for > sure already contains internal queue/buffer. > > >> In particular, is there a reason you don't want to use Stream.BeginRead() >> or some other async mechanism? Why do you need polling? >> >> We need polling because our current interaction model is based on polling. > > >> If there's a good need for polling, we're considering providing a `bool >> DataAvailable(this Stream stream)` extension method (thus translating the >> dubious `int` InputStream.available() return value into a `bool`, and this >> mechanism could also check for NetworkStream and return >> NetworkStream.DataAvailable), but before we provide this we'd like to know >> how useful it actually is. >> > > Think thats logical to provide access to the information underlying stream > already has. I was just surprised abit that no direct api mapping was done > here. I understand InputStream and IO.Stream are different, but still. > > I'll anyway do my own buffering to move forward and see how port works. > >
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