tox_load_save.js

var toxcore = require('toxcore');

// Create a default Tox instance
var tox = new toxcore.Tox();

// Try to load our tox file
tox.loadFromFile('my.tox', function(err) {
  if(!err) {
    console.log('Loaded from file successfully');
  } else {
    console.log('Error loading from file (probably doesn\'t exist)');
  }

  // Bootstrap from nodes (see a list at: https://wiki.tox.im/Nodes)
  tox.bootstrapFromAddressSync('23.226.230.47', 33445, 'A09162D68618E742FFBCA1C2C70385E6679604B2D80EA6E84AD0996A1AC8A074'); // stal
  tox.bootstrapFromAddressSync('104.219.184.206', 443, '8CD087E31C67568103E8C2A28653337E90E6B8EDA0D765D57C6B5172B4F1F04C'); // Jfreegman

  // Set your name and status message
  tox.setNameSync('My username');
  tox.setStatusMessageSync('Hello world!');

  // Listen for friend requests
  tox.on('friendRequest', function(e) {
    console.log('Friend request from: ' + e.publicKeyHex());
  });

  // Print out your tox address so others can add it
  console.log('Address: ' + tox.getAddressHexSync());

  // Start!
  tox.start();
});

// On SIGINT (Ctrl-C), save to file
process.on('SIGINT', function() {
  tox.saveToFile('my.tox', function(err) {
    if(!err) {
      console.log('Saved to file successfully');
      process.exit(0);
    } else {
      console.log('Error saving to file');
      process.exit(1);
    }  
  });
});