StackOverflow2013

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copied!<p>So, looking at your <code>NSStreamDelegate</code>, it looks like you haven't implemented all of the cases for that switch statement. I recently wrote an IRC client for OS X that uses <code>NSStream</code> and <code>NSStreamDelegate</code> in a very similar way, and I'm pretty sure that the compiler should complain when you haven't checked for all of the cases there.</p> <p>Looking back to <a href="https://github.com/tjarratt/twIRCk/blob/master/TwIRCk/GLGReadDelegate.m" rel="nofollow">some of my code</a> it looks like you should be checking for the cases </p> <ul> <li><code>NSStreamEventHasSpaceAvailable</code></li> <li><code>NSStreamEventOpenCompleted</code></li> <li><code>NSStreamEventHasBytesAvailable</code></li> <li><code>NSStreamEventEndEncountered</code></li> <li><code>NSStreamEventErrorOccurred</code></li> </ul> <p>So the case you haven't checked for is <code>NSStreamEventHasSpaceAvailable</code>, which is when you can start writing to your stream.</p> <p>edit: Reading your code again, I see in your <code>sendMessage</code> action that you're using the <code>outputStream</code> object instead of the delegate to write, and then doing the work yourself to read from the <code>inputStream</code>. I think you probably want to use the delegate and never read directly from your inputstream because it will greatly simplify how your code receives data from the network. From what I understand, <code>NSStream</code> is there to provide a small layer of abstraction around the fact that data is buffered from the network so you don't need to do things like call <code>usleep</code> while your inputstream does not have bytes available to read.</p> <p>edit2: I read your update about your code never getting past <code>while (![inputStream hasBytesAvailable])</code> and it seems pretty clear that the problem is that you're not using your streams correctly. The way I see it, the best way to use <code>NSStream</code> is to respond to events, using its <code>handleEvent:(NSStreamEvent) event</code> method, and never directly tell it to write bytes, or to sleep until it has bytes available.</p> <p>In the code I linked to you, I have a readDelegate and a writeDelegate that both handle <code>NSStreams</code>, you might want to take a look at how I use my writeDelegate <a href="https://github.com/tjarratt/twIRCk/blob/master/TwIRCk/GLGWriteDelegate.m" rel="nofollow">here</a>. I basically have a method, <code>addCommand:(NSString *) command</code> that puts a string to write to the stream into a queue, and then when my stream delegate can write bytes (<code>NSStreamEventHasSpaceAvailable</code>), I write as many bytes as I can. I hope this helps!</p>

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