Android Question Help to recieve text messages from a server

[cuellar]

Hello
I need information about how to recieve messages from a server to an unique phone and vice versa, selected by her number telephone or anything else. There a lot of devices and the messages, wich are privates, only must send to the corresponding phone.
Where I must start to looking for the solution?
What libraries can I serve me?
Sockets perhaps or AsyncStreams?

How can I differentiate a device or other?

Any help would be grateful.

 

[Erel]

Do you need to send the messages immediately? Or do you want to periodically check for new messages?

 

[cuellar]

It must be immediately

 

[Erel]

In that case you should check the GCM tutorial.

 

[cuellar]

Thanks Erel, I will look at it, but one question...
This can be done without GCM? Only with an own server and the application of the device, without relying on third parties

and one more...
Do chat applications use GCM?

thanks again.

 

[Erel]

The question is how will you notify the device that there is a message waiting for it? The alternative to GCM is to periodically poll the server from the device.

I believe that Whatsapp uses GCM.

 

[cuellar]

Then I guess that I must do it with socket connections and TCP or UDP protocols for the poll method. Is this correct?

My application is not a chat. It is monitor a machine and I want to receive messages from machine turned off, or turned on.

I'm actually very lost in this topic, so I greatly appreciate your help

 

[Erel]

If you want to implement a polling method then you should use the Network library (TCP or UDP).