How to make your messenger?

Question

Programming

Interested in creating a simple text messenger for mobile platforms.
1. Prompt material on this issue.
2. What role does the server play in all of this?

Answer 1

IMHO, reinvent the wheel. Put a Jabber server, and on mobile phones any community that supports jabber.
However, if you want to complicate your life, you can write something of your own. The server in this case must store the history of correspondence (well, or at least not yet delivered messages). Server side web api for receiving and sending messages. The application must contact the server for new messages and when sending. But I said this in a very primitive way ...

Answer 2

Just like how Telegram appeared .. Create a protocol, and then an environment ..
Take, for example, a general description of the work process of the same Telegram https://dev.stel.com/mtproto
And then everything depends only on desire))

Answer 3

From my own experience (and we use the VIPole messenger at work), a corporate server is set up to transfer and store data in the messenger. Then all the information that you exchange between users remains on your server, i.e. data security and corporate communication processes you control yourself anywhere without giving the data to the side. But it is clear that installing a server costs money, you have to pay for security

Answer 4

1. google
2. the main role is played by the server.