µWebSockets™ ("micro") is simple, secure & standards compliant web I/O for intense^[1] and/or constrained use cases.

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Tread lightly.

This is the development branch of v0.15. Track progress & issues here. Checkout v0.14 for something stable.

Express yourself briefly.

uWS::SSLApp({

    /* There are tons of SSL options */
    .cert_file_name = "cert.pem",
    .key_file_name = "key.pem"
    
}).get("/hello", [](auto *res, auto *req) {

    /* You can efficiently stream huge files too */
    res->writeHeader("Content-Type", "text/html; charset=utf-8")->end("Hello HTTP!");
    
}).ws<UserData>("/*", {

    /* Just a few of the available handlers */
    .open = [](auto *ws, auto *req) {
        ws->subscribe("buzzword weekly");
    },
    .message = [](auto *ws, std::string_view message, uWS::OpCode opCode) {
        ws->send(message, opCode);
    }
    
}).listen(9001, [](auto *token) {

    if (token) {
        std::cout << "Listening on port " << 9001 << std::endl;
    }
    
}).run();

Pay what you want.

A free & open source (permissive) project since 2016. Kindly sponsored by BitMEX, Bitfinex & Coinbase in 2018.

Become a paying sponsor to unlock support, issue reporting, roadmaps and to drop suggestions.

Deploy like a boss.

Commercial support is available via a per-hourly consulting plan or as otherwise negotiated. If you're stuck, worried about design or just in need of help don't hesitate throwing me, the author a mail and we'll figure out what's best for both parties. I want your business to have a proper understanding of the problem before rushing in to one of the many pitfalls.

Excel across the board.

All that glitters is not gold. Especially so in a market driven by flashy logos, hype and pointless badges.

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