Create a brodcast botframework - SDK NodeJS - node.js

Question

Can I send a message to all the users who spoke with the bot? It would be a message and it would be for all users. (Broadcast)?
botbuilder 3.14.0 - nodejs

Answer 1

You can use proactive messages for that as it allows you to send the user a message that is not directly related to the current topic of conversation.
Here's a sample on how to send an ad-hoc proactive message:
'use strict';
var restify = require('restify');
var builder = require('botbuilder');
var server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, function () {
console.log('%s listening to %s', server.name, server.url);
});
// setup bot credentials
var connector = new builder.ChatConnector({
appId: process.env.MICROSOFT_APP_ID,
appPassword: process.env.MICROSOFT_APP_PASSWORD
});
// Bot Storage: Here we register the state storage for your bot.
// Default store: volatile in-memory store - Only for prototyping!
// We provide adapters for Azure Table, CosmosDb, SQL Azure, or you can implement your own!
// For samples and documentation, see: https://github.com/Microsoft/BotBuilder-Azure
var inMemoryStorage = new builder.MemoryBotStorage();
var bot = new builder.UniversalBot(connector).set('storage', inMemoryStorage); // Register in memory storage
// send simple notification
function sendProactiveMessage(address) {
var msg = new builder.Message().address(address);
msg.text('Hello, this is a notification');
msg.textLocale('en-US');
bot.send(msg);
}
var savedAddress;
server.post('/api/messages', connector.listen());
// Do GET this endpoint to delivey a notification
server.get('/api/CustomWebApi', (req, res, next) => {
sendProactiveMessage(savedAddress);
res.send('triggered');
next();
}
);
// root dialog
bot.dialog('/', function(session, args) {
savedAddress = session.message.address;
var message = 'Hello! In a few seconds I\'ll send you a message proactively to demonstrate how bots can initiate messages.';
session.send(message);
message = 'You can also make me send a message by accessing: ';
message += 'http://localhost:' + server.address().port + '/api/CustomWebApi';
session.send(message);
setTimeout(() => {
sendProactiveMessage(savedAddress);
}, 5000);
});
You can also find a complete sample that shows how to send proactive messages using the Bot Builder SDK for Node.js here