Connect node js server with android

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I need to make android registration/authentification with node.js. In server side i use express , what else i must use on the server to connect with android app? Please help me, i'm new on this.

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11

Best way to connect android application with server is Retrofit. You can find multiple tutorials in internet for this. This is maximum used by all android developers.

Tutorial 1

Tutorial 2

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On nodejs side use JWT for authentication(use any npm jwt package), once user enters credentials in app send then to the nodejs server, if they are valid, send a JWT token to the client(android app), save the token in local preferences(app side), while making subsequent requests use jwt in your request header, so that nodejs can authenticate your app/user.
android side its better to use retrofit to make network requests.
data you send from or to server should be in JSON fromat.

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