µWebSockets.js™ (it's "micro") is simple, secure[1] & standards compliant[2] web I/O for the most demanding[3] of applications.
• For Python • User manual • Docs
© 2016-2019, >39,632,272 downloads
Think of it as a complete replacement to both Express.js and Socket.IO, written entirely in C/C++ for maximum performance and reliability. There are tons of examples but here's the gist of it all:
/* Non-SSL is simply App() */
require('uWebSockets.js').SSLApp({
/* There are tons of SSL options */
key_file_name: 'misc/key.pem',
cert_file_name: 'misc/cert.pem',
}).ws('/*', {
/* For brevity we skip the other events */
message: (ws, message, isBinary) => {
let ok = ws.send(message, isBinary);
}
}).any('/*', (res, req) => {
/* Let's deny all Http */
res.end('Nothing to see here!');
}).listen(9001, (listenSocket) => {
if (listenSocket) {
console.log('Listening to port 9001');
}
});Install with npm install uNetworking/uWebSockets.js#v17.4.0 or any such release. No compiler needed.
Real-world tests over TLS 1.3 and Ethernet puts us 5x as efficient as Socket.IO, 2x as efficient as websockets/ws.
Commercially developed on a sponsored/consulting basis; BitMEX, Bitfinex and Coinbase are current or previous sponsors. Contact me, the author for support, feature development or consulting/contracting.
µWebSockets.js is intellectual property licensed Apache 2.0 with limitations on trademark use. Forks must be clearly labelled as such and must not be confused with the original.