On Jun 6, 2:49 am, Akki <akshay.iitr....@gmail.com> wrote: > Is there any way by which I can get the IP address of > the other device by just using the phone no.
No. Not only is there no way to obtain such information by lookup from the phone number, in most cases the information doesn't exist. Most consumers use little router / wifi access point boxes with a feature called network address translation (NAT) which allows all of the devices in their home, business, or cafe to share the same external IP address. These boxes implicitly reject incoming connections, unless a special forwarding rule has been set up, or there is a clear relationship between the incoming traffic and an existing connection or recent outbound transmission. They do that not only for reasons of security, but for the simple reason that without correlation to something sent outbound or a configured forwarding rule, the router would not know which local device the traffic was intended for. For reasons of both economy and security, the majority of mobile network providers do basically the same thing within their network infrastructure - your mobile device simply does not have a unique, routable external IP address on which it can accept incoming connections or unsolicited incoming traffic. > Could you please post some other suggestions for setting up a P2P > connections?? You will probably end up having to have an intermediate server on the publicly visible Internet which both mobile devices can connect to. It may be possible, with a lot of effort to set things up so that the server can give each device enough dynamic information about the other that they can subsequently trade packets directly for the remainder of that session, but server help in setting things up will be needed. And in many cases with mobiles, I suspect the ultimate data flow remains mobile-server-mobile rather than directly mobile-mobile. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
