handling socket errors, avoiding instance die

[iamyellow]

Hi!

First of all, thanks for your (good) work! Really helpful, save hours of work for me :D
For some reason my network (I'm not sure what, but I guess: Internet provider, router...) or maybe the server's OS... something breaks my socket opened connections if no activity is detected. When it happens node-apn makes node instance die.
However, the solution is quite simple: just catch the error:

self.socket.on('error', function(data) { self.socket = undefined; });

Obviously, that piece of code can be improved ;)

Thanks again!