A good place to learn.

[get-thepacket]

There is a good reference i found when searching in google, it can help learning to program with blue-tooth using bluez.
https://people.csail.mit.edu/albert/bluez-intro/

[Samy-33]

@get-thepacket, we are planning to use wi-fi instead of bluetooth, because people are not much into bluetooth now a days and also they don't want to switch bluetooth on everytime they want to connect.

[get-thepacket]

@get-thepacket, we are planning to use wi-fi instead of bluetooth, because people are not much into bluetooth now a days and also they don't want to switch bluetooth on everytime they want to connect.

But Bluetooth have become so advanced these days, with low latency and all, still if we can use both it might be an option. What should be the primary way to connect?

[Samy-33]

Primary way to connect should be through WI-FI. As people are connected to the same network from their pc/laptop and mobile.

still if we can use both it might be an option

Yes. This seems like a good idea.

[get-thepacket]

Would you please suggest some references, from where I can study about it? And maybe the language that we're trying to implement it. Since app has to be Android I guess Java is inevitable, but what for PC?

[Samy-33]

I had started initial development in react-native. You can look at RN-implementation branch, if you want to get right into it.

Java is inevitable

True. Java will be used, anyhow.
For PC it's open to suggestions. Might go with Python or ElectronJS. I will post some resources asap.

[get-thepacket]

Personally talking, python is not my strong point. ElectionJS might work but it depends on how good the communication can be implemented. Open to learn new things anyways.

[pranjulps3]

But Bluetooth have become so advanced these days, with low latency and all, still if we can use both it might be an option. What should be the primary way to connect?

Bluetooth doesn't seem feasible to me because of bandwidth issues in video streaming scenarios. Even though we can still have it as an alternative but our primary focus will be on WiFi support.

[get-thepacket]

Electronjs is resources hungry and might not be suitable. As suggested by @Janglee123