I decided to investigate which URLs the iPhone accesses when you use the various embedded applications. To capture the requests I simply setup a Squid proxy on the same local WiFi network and configured the iPhone to proxy all network connections through it.
Below are the results:
Safari – Yahoo! Search:
(note the carrier name and network code are included in the search request)
Safari – Google Search:
GET http://img.youtube.com/vi/ …
It is interesting to note that most traffic is proxied via Apple’s servers – anyone say single point of failure? The reference to IMEI in the Weather and Stocks requests has been discussed at length in other forums before. This is a misnomer, the reference is believed to be just a GUID.
What is more interesting (or worrying!) is the mysterious encrypted connection to http://www.google.com (SSL port 443) whenever YouTube is accessed. I wonder what data is being shared here – and why?