gistfile1.js

var sys = require('sys'),
    http = require('http'),
    pool = [];
    
function finishTHEM(message){
    var pool_size = pool.length, local_r, i;

    sys.puts("Sending " + message + " to " + pool_size + " clients.");
    for(i = 0; i < pool_size; i += 1) {
        local_r = pool.shift();
        local_r.write(message);
        local_r.close();
    }
}

function init(request, response){
    if (request.url === '/favicon.ico' ) {
        return response.close();
    }

    response.writeHeader(200, {
        'Content-Type': 'text/plain'
    });

    if (request.url.substr(1,5) === 'send=') {
        response.write(String(pool.length));
        finishTHEM(request.url.substr(6));
        response.close();
    }
    else {
        pool.push(response);
    }
}
http.createServer(init).listen(8000, '127.0.0.1');