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Socket.IO is an event-driven library for real-time web applications. It enables real-time, bi-directional communication between web clients and servers. [ 3 ] It consists of two components: a client , and a server .
The introduction says one thing, the Disadvantages sections says another. There are various Socket.IO client libraries for other languages, so I guess Socket.IO is both the "reference" JavaScript implementation and the "custom realtime that this library implements on top of other realtime protocols."
Vercel was founded by Guillermo Rauch in 2015 as ZEIT. [1] [3] Rauch had previously created the realtime event-driven communication library Socket.IO. [4]ZEIT was rebranded to Vercel in April 2020, although retained the company's triangular logo.
Around 1987, Data I/O introduced the first of the 'Uni-family' programmers in the form of the 'Uni-site.' This was their first engineering programmer to feature software-programmable pin drivers, a technology that allows any pin of the device socket to be configured, through software, for power, ground, or nearly any type of programming waveform.
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Berkeley sockets originated with the 4.2BSD Unix operating system, released in 1983, as a programming interface.Not until 1989, however, could the University of California, Berkeley release versions of the operating system and networking library free from the licensing constraints of AT&T Corporation's proprietary Unix.
ZeroMQ (also spelled ØMQ, 0MQ or ZMQ) is an asynchronous messaging library, aimed at use in distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ZeroMQ system can run without a dedicated message broker; the zero in the name is for zero broker. [3]
The client sends an HTTP request (method GET, version ≥ 1.1) and the server returns an HTTP response with status code 101 (Switching Protocols) on success.This means a WebSocket server can use the same port as HTTP (80) and HTTPS (443) because the handshake is compatible with HTTP.