Prevent Blocked Numbers from Calling Your Application
Prevent blocked numbers from calling your application. This application would require you to upload a private asset.
// Description // Prevent blocked numbers from calling your application // Host blocklist.json as a private Twilio asset const fs = require('fs'); exports.handler = function (context, event, callback) { let twiml = new Twilio.twiml.VoiceResponse(); // Phone numbers in blocklist.json file are rejected // blocklist.json is uploaded to Twilio Assets as a private asset // Format of blocklist.json is plain text: // ["+14075550100", "+18025550100"] let fileName = '/blocklist.json'; let file = Runtime.getAssets()[fileName].path; let text = fs.readFileSync(file); let blocklist = JSON.parse(text); let blocked = true; if (blocklist.length > 0) { if (blocklist.indexOf(event.From) === -1) { blocked = false; } } if (blocked) { twiml.reject(); } else { // if the caller's number is not blocked, redirect to your existing webhook twiml.redirect('https://demo.twilio.com/welcome/voice/'); } return callback(null, twiml); };
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