IT Education
In this section, we’ll quickly scaffold perfect-cursors before going back to Home.jsx to import and use it. With perfect-cursors, it becomes possible to gently animate the cursor from [0, 0] to [0, 500] basically giving the illusion that the cursor is updated in true realtime. If not for useRef (useCallback would work as well by the way), we would be calling throttle every time the renders (this happens many times per second). This isn’t only quite inefficient, but it would break the throttle function because we would also be starting the internal 50ms timer from scratch every render. There are numerous scenarios where fragmenting a WebSocket message into multiple frames is required (or at least desirable). Without fragmentation, an endpoint would have to buffer the entire message before sending it. With fragmentation, the endpoint can choose a reasonably sized buffer, and when that is full, send subsequent frames as a continuation. The receiving endpoint then assembles the frames to recreate the WebSocket message. The table below describes the headers used by the client and the server during the opening handshake – both the required ones (illustrated in the code snippets above) and the optional ones. WebSocket FAQs WebSocket is a realtime technology that enables bidirectional, full-duplex communication between client and server over a persistent, single-socket connection. The WebSocket connection is kept alive for as long as needed (in theory, it can last forever), allowing the server and the client to send data at will, with minimal overhead. Historically, creating web apps that needed real-time data required an abuse of HTTP protocol to establish bidirectional data transfer. There were multiple...
