Sending data from one phone to another

[Coley Pritchett]

Hello all,

So I added GAE to my app using this tutorial: https://github.com/GoogleCloudPlatform/gradle-appengine-templates/tree/master/HelloEndpoints

My question is, instead of sending the string to and from the same app on one phone, how would I go about sending it to the same app on another phone?

Thanks!

[Nick (Cloud Platform Support)]

Hey Coley,

It's not generally possible to send messages directly to other phones without somehow communicating with a server which can handle the message-passing. The closest thing to what you're describing sounds like Bluetooth, or if somehow a static IP or domain name could be given to a phone on the network of the phone's data-link. The short answer is that no, you'll need (and want) to send messages to a back-end server which will be a central hub for communication. You could also look into Firebase, or other similar technologies. 

[Anastasios Hatzis]

Hi Coley!

I'm not sure if I did understand your use-case correctly. That said, if your use-case relates to communications between phones in close proximity (less than 100 feet), you might want to check out the new Nearby Messages API available for iOS and Android.

It uses Bluetooth, BLE, Wi-fi and Ultrasound, and includes Publishing and Subscription features.

http://developers.google.com/nearby

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[Coley Pritchett]

Thanks for the reply, Nick. I was under the impression GAE had something like that built into it, but I'll look into Firebase or something like it. Cheers.

[Coley Pritchett]

Hey Anastasios, the app I'm trying to build is going to be used by people who will most likely be a bit farther than 100 feet, but thanks for the advice anyways!