Question How can two mobile/ PC devices send information to each other

[think2]

I'm doing a Flutter app using Firebase and I would like to be able to send data directly from one mobile/PC device to another. If a device sends its IP address to Firebase can another device ask for that IP address and use it to send data directly to the other remote device using TCP. The two connected devices would listen on a port, say 3000, to receive each other's messages.

So a related question, if I run a firebase cloud function that needs to send information of some kind to logged in users, how would I do that. Does firebase need to record the IP address of logged in users in order to send them information. How does Firebase do push notifications?

 

[mxnerd]

Maybe this is the similar question you were reffering to?

Question - sending data between two Smartphones without sending data through Server

I try to programm a Mobile Messenger (C++, Qt) where the Server only sends the current IP address of Phone A to Phone B and vice versa and the data is send directly between these two devices with the goal to minimize the needed calculationpower of the server. I try to understand if that is...

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