Several memory leaks..

[hacx]

First problem:
You have those 2 lines:

[_inputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
	[_inputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];

The second line should be replaced with _outputStream.

Second problem:
You are retaining the _inputStream and _outputStream, which is wrong. the returned streams from CFSocketCreate & CFStreamCreatePairWithSocketToHost are following the "Create Rule". which means they are already returned as retained. you should only release them when you're done.