Скачать или смотреть How to Send Messages Securely Between Users Using WebSocket with the Same Token

Learn how to implement secure messaging between users with the same token in your WebSocket application, using JavaScript and Node.js.
---
This video is based on the question https://stackoverflow.com/q/68052855/ asked by the user 'S S' ( https://stackoverflow.com/u/5346880/ ) and on the answer https://stackoverflow.com/a/68058115/ provided by the user 'Will B.' ( https://stackoverflow.com/u/1144627/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to send message between users with same token using websocket?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Send Messages Securely Between Users Using WebSocket with the Same Token

In the realm of real-time web applications, WebSocket has emerged as a vital technology that allows for bi-directional communication between clients and servers. One common use case involves sending messages between users who have the same access token. This capability ensures that only users who should be communicating with each other can send and receive messages. In this post, we will explore the foundational steps necessary to implement this feature in your JavaScript and Node.js applications.

The Problem

If you are developing a WebSocket application, you may encounter a scenario where you need multiple users to exchange messages without exposing these messages to users who do not share the same access token. Yet, if messages sent from one user are received by all users connected to the server, it defeats the purpose of specific communication paths. What is the best way to ensure that messages are sent only to the intended recipients and not broadcasted indiscriminately?

The Solution

To implement secure messaging within your WebSocket application, we’ll break down the solution into several steps. Below are the necessary modifications to the code structure to facilitate messaging securely among users with the same token.

1. Server Setup

Start by setting up your Node.js server to manage WebSocket connections. You will need to keep track of active connections grouped by their unique tokens.

[[See Video to Reveal this Text or Code Snippet]]

2. Handling Incoming Messages

In the handleIncomingMessage function, we will process the message and ensure it is only sent to other clients with the same token.

[[See Video to Reveal this Text or Code Snippet]]

3. Removing Clients on Disconnect

Ensure to clean up on disconnection by removing clients from the active connection list.

[[See Video to Reveal this Text or Code Snippet]]

4. Client-Side Implementation

On the client side, create an HTML file that establishes a WebSocket connection and allows users to send messages.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Implementing user messaging with WebSocket technology is a powerful feature for any real-time web application. By associating WebSocket connections with tokens and ensuring that messages are only sent to clients with the same token, you can create a secured messaging environment. This allows your users to communicate effectively without exposing data to unauthorized individuals.

Using the steps outlined above, you can build a WebSocket application capable of enabling targeted messaging. Additionally, always ensure to manage connections appropriately to prevent memory leaks and to maintain efficient communication channels.