swapCameraFailure.js

function rePublish() {
    session.unpublish(publisher);
    
    // using initPublisher will work once
    //publisher = OT.initPublisher();
    session.publish(publisher, function(err) {
        if (err) {
            console.log(err);
        } else {
            console.log('republish');
        }

    });
    console.log('switched camera');
}