Simple secure websocket (wss) chat using Node.js server and Jquery client

This article shows a static file server built in Node.js without using any frameworks. The current state of Node.js is such that almost everything we need for the static file server is provided by built-in APIs and a few lines of code.

In this guide we'll walk through the implementation of a WebSocket-based ping application. In this application, the client sends a "ping" message to the server every second, and the server responds with a "pong" message. The client listens for "pong" messages and logs them, keeping track of how many message exchanges there have been.

Now that you know the purpose and potential benefits of server-side programming, we're going to examine in detail what happens when a server receives a "dynamic request" from a browser. As most website server-side code handles requests and responses in similar ways, this will help you understand what you need to do when writing most of your own code.

Node.js is a cross-platform JavaScript runtime environment that allows developers to build server-side and network applications with JavaScript.

The WebSocketStream API is a Promise-based alternative to WebSocket for creating and using client-side WebSocket connections. WebSocketStream uses the Streams API to handle receiving and sending messages, meaning that socket connections can take advantage of stream backpressure automatically (no additional action required by the developer), regulating the speed of reading or writing to avoid bottlenecks in the application.

If you would like to use the WebSocket API, it is useful if you have a server. In this article I will show you how to write one in C#. You can do it in any server-side language, but to keep things simple and more understandable, I chose Microsoft's language.

Secure Payment Confirmation (SPC), available through the Payment Request API, provides a mechanism for strong customer authentication during checkout, thereby protecting against online payment fraud.

This example shows you how to create a WebSocket API server using Oracle Java.

Developing a web application that uses server-sent events is straightforward. You'll need a bit of code on the server to stream events to the front-end, but the client side code works almost identically to websockets in part of handling incoming events. This is a one-way connection, so you can't send events from a client to a server.