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WebSockets ↔ Web API to open 2-way Client/Server connection, to push update vs Polling

use own Protocol to send/receive message from TCP/IP Server

WebSocket​

Interface Object & Constructor to access WebSockets API

Source: developer.mozilla.org/en

Polling​

(process) to send GET Request to check Server State change

to Build Web Socket Server

References​

  1. ws ↔ Node.js Module to build WebSockets Server

  2. socket.io ↔ Node.js Module to build WebSockets with built-in Server/Client & fallback Long Polling

  3. WebSocket ↔ Interface Object & Constructor to access WebSockets API