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Send first chat message

The ConnectyCube Chat API is a set of tools that enables developers to integrate real-time messaging into their web and mobile applications. With this API, users can build powerful chat functionalities that support one-on-one messaging, group chats, typing indicators, message history, delivery receipts, and push notifications.

If you’re planning to build a new app, we recommend starting with one of our code samples apps as a foundation for your client app.
If you already have an app and you are looking to add chat to it, proceed with this guide. This guide walks you through installing the ConnectyCube SDK in your app, configure it and then sending your first message to the opponent in 1-1 chat.

Before you start

Before you start, make sure:

  1. You have access to ConnectyCube account. If you don’t have an account, sign up here.
  2. An app created in ConnectyCube dashboard. Once logged into your ConnectyCube account, create a new application and make a note of the app credentials (app ID, auth key, and auth secret) that you’ll need for authentication.

Step 1: Configure SDK

To use chat in a client app, you should install, import and configure ConnectyCube SDK.

Note: If the app is already created during the onboarding process and you followed all the instructions, you can skip the ‘Configure SDK’ step and start with Required preparations for supported platforms .

Install SDK

Install package from the command line:

Terminal window
flutter pub add connectycube_sdk

Import SDK

Add the following import statement to start using all classes and methods.

import 'package:connectycube_sdk/connectycube_sdk.dart';

Initialize SDK

Initialize the SDK with your ConnectyCube application credentials. You can access your application credentials in ConnectyCube Dashboard:

String appId = "";
String authKey = "";


init(appId, authKey);

After all the above is done, the app is ready to be enriched with chat functionality.

Step 2: Create and Authorise User

As a starting point, the user’s session token needs to be created allowing to send and receive messages in chat.

CubeUser user = CubeUser(login: "user_login", password: "super_sequre_password");


createSession(user)
    .then((cubeSession) {})
    .catchError((error){});

Note: With the request above, the user is created automatically on the fly upon session creation using the login (or email) and password from the request parameters.

Important: such approach with the automatic user creation works well for testing purposes and while the application isn’t launched on production. For better security it is recommended to deny the session creation without an existing user.
For this, set ‘Session creation without an existing user entity’ to Deny under the Application -> Overview -> Permissions in the admin panel.

Step 3: Connect User to chat

Connecting to the chat is an essential step in enabling real-time communication. By establishing a connection, the user is authenticated on the chat server, allowing them to send and receive messages instantly. Without this connection, the app won’t be able to interact with other users in the chat.

CubeUser user = CubeUser(id: 4448514, password: "supersecurepwd");


CubeChatConnection.instance.login(user)
      .then((loggedUser) {})
      .catchError((error) {});

Step 4: Create 1-1 chat

Creating a 1-1 chat is essential because it gives a unique conversation ID to correctly route and organize your message to the intended user.

You need to pass type = CubeDialogType.PRIVATE and an ID of an opponent you want to create a chat with:

CubeDialog dialog = CubeDialog(
    CubeDialogType.PRIVATE,
    occupantsIds: [56]);


createDialog(dialog)
    .then((createdDialog) {})
    .catchError((error) {});

Step 5: Send / Receive chat messages

Once the 1-1 chat is set up, you can use it to exchange messages seamlessly. This code example demonstrates how to send and receive messages in the created 1-1 chat:

// some dialog, which must contains opponent's id in 'occupantsIds' for CubeDialogType.PRIVATE and
// 'dialogId' for other types of dialogs


CubeDialog createdDialog = ...;
CubeMessage message = CubeMessage();
message.body = "How are you today?";
message.dateSent = DateTime.now().millisecondsSinceEpoch;
message.markable = true;
message.saveToHistory = true;


createdDialog.sendMessage(message)
    .then((cubeMessage) {})
    .catchError((error) {});


// to listen messages
ChatMessagesManager chatMessagesManager = CubeChatConnection.instance.chatMessagesManager;
chatMessagesManager.chatMessagesStream.listen((newMessage) {
    // new message received
}).onError((error) {
    // error received
});

Congratulations! You’ve mastered the basics of sending a chat message in ConnectyCube.

What’s next?

To take your chat experience to the next level, explore ConnectyCube advanced functionalities, like adding typing indicators, using emojis, sending attachments, and more.

Follow the Chat API documentation to enrich your app and engage your users even further!