Setup and Configuration
Prerequisites and Setup
We require two packages to create a simple client application to receive notifications:
1. socket.io-client (For connectivity)
2. HTTP client-library (For HTTP sending requests)
A typical simple application to get notification enabled is as depicted below.
It's a two-step process.
- 1.Authentication (/v1/auth) user
- 2.Listen the specific event to receive relevant message\data -Listen for event the "notification" to receive transactional notifications -Listen for event the "balance" to receive balance changes -Listen for event the "history" to receive history changes
const axios = require('axios').default;
const { io } = require('socket.io-client')
const relysiaEndpoint = 'api.relysia.com';
(async () => {
// Login into account
const loginObject = await axios.post(`https://${relysiaEndpoint}/v1/auth`, {email: "[email protected]", password: "password"});
console.log('Login completed', loginObject.data);
// Connect websocket for this account
const socket = io(`wss://${relysiaEndpoint}`, {
extraHeaders: {
authToken: loginObject.data.data.token,
},
transports: ['websocket', 'polling']
});
socket.on('error', function(error) {
console.log("Connection Error: " + error.toString());
});
// Listen for message and log them as notification arrive
socket.on('notification', function (message) {
console.log('event received', message);
})
// listen for balance and log them on balance arrive
socket.on('balance', function (balance) {
console.log('event received', balance);
})
// listen for history and log them on history arrive
socket.on('history', function (history) {
console.log('event received', history);
})
socket.on('connect', function(connection) {
console.log('WebSocket Client Connected');
socket.on('close', function() {
console.log('echo-protocol Connection Closed');
});
});
})()