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Conversations Demo Web Application Overview

SDK version of this demo app:

The latest available SDK version of this demo app:

Getting Started

Welcome to the Conversations Demo Web application. This application demonstrates a basic Conversations client application with the ability to create and join conversations, add other participants into the conversations and exchange messages.

You can try out one of our 1-click deploys to test the app out prior to jumping to Next Steps:

Deploy

Test out on Github Codespaces

Open in GitHub Codespaces

Note: This deployment requires a token service url.

Deploy to Vercel

Automatically clone this repo and deploy it through Vercel.

Note: This deployment requires a token service url. Vercel will ask for the REACT_APP_ACCESS_TOKEN_SERVICE_URL env variable.

Deploy with Vercel

Next Steps

What you'll need to get started:

Generating Access Tokens

Client apps need access tokens to authenticate and connect to the Conversations service as a user. These tokens should be generated by your backend server using your private Twilio API Keys. If you already have a service that does this, skip to setting the token service URL.

For testing purposes, you can quickly set up a Twilio Serverless Functions to generate access tokens. Note that this is not a production ready implementation.

Generating Access Tokens with Twilio Functions

  1. Create a Twilio Functions Service from the console and add a new function using the Add+ button.
  2. Set the function path name to /token-service
  3. Set the function visibility to Public.
  4. Insert the following code:
// If you do not want to pay for other people using your Twilio service for their benefit,
// generate a username and password pair different from what is presented below.

//The 1st value [user00] acts as your Username for the Demo app Login. The 2nd value within double qoutes will act as your Password for the login.
//This method is not advised to be used in production. This is ONLY for testing. In production, please utilize your own server side application to handle your users. 

let users = {
    user00: "", !!! SET NON-EMPTY PASSWORD AND REMOVE THIS NOTE, THIS GENERATOR WILL NOT WORK WITH EMPTY PASSWORD !!!
    user01: ""  !!! SET NON-EMPTY PASSWORD AND REMOVE THIS NOTE, THIS GENERATOR WILL NOT WORK WITH EMPTY PASSWORD !!!
};

let response = new Twilio.Response();
let headers = {
    'Access-Control-Allow-Origin': '*',
  };

exports.handler = function(context, event, callback) {
    response.setHeaders(headers);
    if (!event.identity || !event.password) {
        response.setStatusCode(401);
        response.setBody("No credentials");
        callback(null, response);
        return;
    }

    if (users[event.identity] != event.password) {
        response.setStatusCode(401);
        response.setBody("Wrong credentials");
        callback(null, response);
        return;
    }
    
    let AccessToken = Twilio.jwt.AccessToken;
    let token = new AccessToken(
      context.ACCOUNT_SID,
      context.TWILIO_API_KEY_SID,
      context.TWILIO_API_KEY_SECRET, {
        identity: event.identity,
        ttl: 3600
      });

    let grant = new AccessToken.ChatGrant({ serviceSid: context.SERVICE_SID });
    if(context.PUSH_CREDENTIAL_SID) {
      // Optional: without it, no push notifications will be sent
      grant.pushCredentialSid = context.PUSH_CREDENTIAL_SID; 
    }
    token.addGrant(grant);
    response.setStatusCode(200);
    response.setBody(token.toJwt());

    callback(null, response);
};
  1. Save the function.
  2. Open the Environment Variables tab from the Settings section and:
    • Check the "Add my Twilio Credentials (ACCOUNT_SID) and (AUTH_TOKEN) to ENV" box, so that you get ACCOUNT_SID automatically.
    • Add SERVICE_SID
      • Open Conversations Services
      • Copy the SID for Default Conversations Service, or the service you want to set up.
    • Add TWILIO_API_KEY_SID and TWILIO_API_KEY_SECRET. Create API Keys in the console.
    • Optionally add PUSH_CREDENTIAL_SID, for more info see Setting up Push Notifications
  3. Copy URL from the "kebab" three dot menu next to it and and use it as REACT_APP_ACCESS_TOKEN_SERVICE_URL .env variable below.
  4. Click Deploy All.

Set the Token Service URL

If you don't have your own .env, rename this repo's .env.example file to .env. Set the value of REACT_APP_ACCESS_TOKEN_SERVICE_URL to point to a valid Access Token server. If you used Twilio Functions for generating tokens, get the value from Copy URL in step 7 above.

REACT_APP_ACCESS_TOKEN_SERVICE_URL=http://example.com/token-service/

NOTE: No need for quotes around the URL, they will be added automatically.

This demo app expects your access token server to provide a valid token for valid credentials by URL:

$REACT_APP_ACCESS_TOKEN_SERVICE_URL?identity=<USER_PROVIDED_USERNAME>&password=<USER_PROVIDED_PASSWORD>

And return HTTP 401 in case of invalid credentials.

Setting up Push Notifications

This demo app uses Firebase for processing notifications. This setup is optional. Note: Support may be limited for some browsers.

Set up Firebase

  1. Create a Firebase project
  2. Go to the Project Settings
  3. Got to the Cloud Messaging and enable Cloud Messaging API (Legacy) through the "kebab" menu besides it.
  4. Note or copy the Server Key token for creating push credentials.

Create Push Credential

Create a push credential to add a push grant to our access token.

  1. Go to the Credentials section of the console.
  2. Create a new FCM Push Credential and set the Firebase Cloud Message Server Key Token as the FCM Secret.
  3. Note or copy the CREDENTIAL SID to set as PUSH_CREDENTIAL_SID env variable in your token creation Function.

Create Firebase App set config

From the Firebase Project Settings General tab, add a web app to get the firebaseConfig, it should look like this:

var firebaseConfig = {
  apiKey: "sample__key12345678901234567890",
  authDomain: "convo-demo-app-internal.firebaseapp.com",
  projectId: "convo-demo-app-internal",
  storageBucket: "convo-demo-app-internal.appspot.com",
  messagingSenderId: "1234567890",
  appId: "1:1234567890:web:1234abcd",
  measurementId: "EXAMPLE_ID"
};

Note: Firebase API Keys aren't like Twilio API keys and don't need to be kept secret.

Replace this project's firebase-config.example in the public folder with a firebase-config.js containing your specific config.

Enable Push Notification in Conversations Service

Select your conversations service, navigate to the Push Notifications section, and check the Push notifications enabled boxes for the push notifications you want.

Build & Run

Deploy on Github Codespaces

  • Click Open in GitHub Codespaces
  • Wait for the pop-up message to let you know that the port forwarding is done. Then, click "Open in Browser".
  • If the pop-up message isn't displayed, you can always open "PORTS" tab and click on "Open in Browser" button manually.

Run Application Locally

  • Run yarn to fetch project dependencies.
  • Run yarn build to fetch Twilio SDK files and build the application.
  • Run yarn start to run the application locally.

Run Application Inside Docker

  • Run docker compose up --build to build and locally run the application inside a Docker container.

License

MIT

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