[AC-3127] iPhone client closes TCP connection after 10 seconds

(This is not a problem with the Android emulator) After opening an XMPP connection with the server, the iPhone client waits 10 seconds and then closes the connection. It repeats this activity every 10 seconds thereafter. The client is using the Sprophe XMPP library. Wire trace at http://pastebin.com/xZFHFYuB The packet sent at 07:00:31.425308 closes the connection, the server acks, and the next packet (at 07:00:31.428480) opens a new connection on a different TCP port. No callbacks are executed during this period (no breakpoints hit). There is nothing written to the Titanium debug logs during this event. The same exact code works normally in the Android emulator.