Pumping an event stream using Promises

gistfile1.txt

var network = getNetworkSystem();
var io = initWebsockets();

var waitForNodes = function(reject) {
    return network.onNodeIdentification()
        .then(function(nodeId) {
            io.emit('node found', nodeId);
        }, reject)
        .then(waitForNodes.bind(this, reject));
};

var valPromise = Promise(function(resolve, reject) {
    waitForNodes(reject);
})
.then(
    function() {},
    function(err) {
        console.error(err);
    });