Connection

const chatConnectParams = {
  userId: 12345,
  password: 'passw0rd!'
};

QB.chat
  .connect(chatConnectParams)
  .then(function () {
    // connected successfully
  })
  .catch(function (e) {
    // some error occurred
  });

import { NativeEventEmitter } from 'react-native'
import QB from 'quickblox-react-native-sdk'

const emitter = new NativeEventEmitter(QB.chat);

const QBConnectionEvents = [
  QB.chat.EVENT_TYPE.CONNECTED,
  QB.chat.EVENT_TYPE.CONNECTION_CLOSED,
  QB.chat.EVENT_TYPE.CONNECTION_CLOSED_ON_ERROR,
  QB.chat.EVENT_TYPE.RECONNECTION_FAILED,
  QB.chat.EVENT_TYPE.RECONNECTION_SUCCESSFUL,
]

QBConnectionEvents.forEach(eventName => {
  emitter.addListener(eventName, connectionEventHandler)
})

QB.chat
  .isConnected()
  .then(function (connected) { // boolean
    // handle as necessary, i.e.
    // if (connected === false) reconnect()
  })
  .catch(function (e) {
    // handle error
  });

QB.chat
  .disconnect()
  .then(function () {
    // disconnected successfully
  })
  .catch(function (e) {
    // handle error
  });

const autoReconnectParams = { enable: false };

QB.settings
  .enableAutoReconnect(autoReconnectParams)
  .then(function () {
    // done
  })
  .catch(function (e) {
    // handle error
  });

import { AppState } from 'react-native'
import QB from 'quickblox-react-native-sdk'

AppState.addEventListener('change', trackAppState)

function trackAppState (appState) {
  if (appState.match(/inactive|background/)) {
    QB.chat
      .disconnect()
      .then(function () { /* disconnected successfully */ })
      .catch(function (e) { /* handle error */ });
  } else {
    const chatConnectParams = {
      userId: 12345,
      password: 'passw0rd!'
    };
    QB.chat
      .connect(chatConnectParams)
      .then(function () { /* connected successfully */ })
      .catch(function (e) { /* some error occurred */ });
    }
}