How to make a HTTP calls?

Related articles

• How to get the name of the user interaction with the bot?
• How to set callback URL?
• How to add hyperlinks to image and text?
• Why do my messages appear jumbled?
• When I make a HTTP call to the bot https://www.gupshup.io/developer/bot/demobot/public?text=Hello I get a 404 error like {""code"":404,""message"":""The requested resource was not found""}