APNs4r::Sender can enter infinite loop. Yikes!

[noahmiller]

In APNs4r::Sender#push, if @ssl.write fails there are two bugs in the rescue block:

1. The ssl connection is not recreated, since @ssl ||= connect is used rather than @ssl = connect.
2. If the write fails again (e.g. because ssl has disconnected, but isn't nil), retry will be call an infinite number of times.

[ponomarevlm]

here's quick-and-dirty fix with exponential delay and total timeout
def push notification
delay = 2
begin
@ssl.write notification.to_s
rescue OpenSSL::SSL::SSLError, Errno::EPIPE
sleep delay
@ssl = connect(@host, @PORT)
delay*=2 and retry if delay < 60
raise Timeout::Error
end
end

tell me if it's fit you needs and i'll push it.

[noahmiller]

Yes, that looks good -- thanks!