![]() Var express = require('express') //express handles routes Open server.js, replace all the code in it with code below : Lets finish that verification and then write code for wikipedia search. In order to setup webhooks for our messenger bot, A small verification is done by messenger platform to verify ownership and make sure webhook URLs are secure. You can read more about express here Basic verification Cloud9 also provides a basic boilerplate code with some modules preinstalled, one of them is expressJS which is a popular NodeJs application framework.Įxample code in messenger platform documentation also uses express framework (Although documentation is not explained in detail) so we’ll be using the same in this tutorial. If you have already created a private workspace then change it in the workspace setting from your C9 dashboard.Ī workspace with NodeJS preinstalled will be created for you. Callback verification failed with the following errors: curl_errno = 47 curl_error = Maximum (2) redirects followed HTTP Status Code = 302 HTTP Message = Moved Temporarily Private workspaces doesn’t allow public requests and redirects to signin page which causes this error – The URL couldn’t be validated. In your dashboard click on Create new workspace > enter a name > select Node.Js in choose template and click Create workspace. If you don’t have any then create a new facebook page from here In messenger settings > Select the page which will be used as bot identity, A token will be generated which will be used later to send messages. Now click “Add Product.” Select “Messenger.” in app dashboard. Go to and create a new app > click on use basic setup. We’ll Follow first few steps same as mentioned in official documentation as explained below. Getting started with messenger bot development If you are new to web development and still confused then just follow the steps below and start writing code along with this tutorial. But you’ll need a cloud server or some shared hosting to deploy your bot. You can also develop in your local PC by installing NodeJS and using any text editor or IDE to write code. If you buy a pro account from cloud9 then you can also deploy your app. Virtual machine from C9 free account goes into sleep mode and 2 hours of inactivity. In simple words, Cloud9 provides a virtual machine with command line access where you can install anything, write code and preview it. It supports hundreds of programming languages, including PHP, Ruby, Perl, Python, JavaScript with Node.js, and Go. Cloud9 IDE is an online integrated development environment. I’m using cloud IDE c9.io for developement. Basic Javascript knowledge, Some NodeJS experience would help.Facebook developer account – Just log in with your existing facebook account at.You can watch demo video of wiki bot below. Clicking read more returns description of the result, View in browser opens appropriate Wikipedia page in the browser. Bot returns 10 relevant search results with read more and view in browser buttons. What are we buildingĪ Wikipedia bot which can be used to search Wikipedia by entering a search term. Messenger platform official documentation contains example code in Javascript (NodeJS). You can use PHP, Python, Ruby or any language that you like. I used Javascript in NodeJS for this bot. POST requests can be handled in any language. Read more about webhooks here – Webhooks wiki Here the event is ‘When user sends a message to our page (bot)’ The concept of sending a HTTP POST request to a specific URL when an event happens is called as webhbook. When a user sends a message to that page, a HTTP POST request with message data will be made by messenger platform to an URL which we define in our app.Īll we have to do is parse the message data sent in POST request and send a reply to user using Send API provided by facebook. A facebook page is used as bot identity, we can use existing page or create a new one. First let’s understand the core concept of how it works, then you can choose any language that you like. We’ll be building the same bot in this tutorial.īots for facebook messenger can be developed in any programming language because of API and webhooks provided by messenger platform. I developed a Wikipedia bot for messenger to get started. Since then many developers have started building facebook messenger bots! I love trying new stuff, So I started building one. Last month Facebook launched their messenger platform (beta) which provides API and tools to create a chat bot for facebook messenger.
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