Using Microsoft Bot builder without Azure Subscription

Question

Hi,

I have developed a bot service using Microsoft BotBuilder. When Bot Framework emulator is making a call to my service (running on "http://localhost:3978/"), it is getting response successfully. But, when my own chatbot (running on "http://localhost:54240") is making the call, service is throwing exception.

I am not getting the details of the exception, but it is just saving:

AggregateException_ctor_DefaultMessage (Operation returned an invalid status code 'NotFound')

I believe, this because of the service url. I want to know is this required to use Azure for any reason, for implementing it? I DON'T want to use Azure at all. Is there a way to do that? Can someone please tell me what's wrong in this code? Or if someone can provide me a simple javascript code to connect and call the Bot Service?

try {

const response = await fetch('http://localhost:3978/api/messages', {

method: "POST",

headers: { "Content-Type": "application/json" },

body: JSON.stringify({

type: "conversationUpdate",

membersAdded: [

{ id: memberBotId, name: "Bot" },

{ id: memberUserId, name: "User" }

],

membersRemoved: [],

channelId: "emulator",

conversation: { id: `${uuidv4() }|livechat` },

id: `${uuidv4()}`,

localTimestamp: getLocalTimestamp(),

recipient: { id: memberBotId, name: "Bot", role: "bot" },

timestamp: getUTCTimestamp(),

from: { id: memberUserId, name: "User", role: "user" },

locale: "en-US",

serviceUrl: "http://localhost:54240"

})

});

if (response.ok) {

const data = await response.json();

// Handle bot's response

chatContent.innerHTML += `<div class="bot-message"><b>Bot:</b> ${data.text || "Welcome! How can I assist you today?"}</div>`;

} else {

throw new Error(`Error: ${response.statusText}`);

}

} catch (error) {

console.error("Error initializing the bot:", error);

chatContent.innerHTML += `<div class="bot-message"><b>Bot:</b> Oops! Something went wrong. Please try again later.</div>`;

}

Thanks