docs: function icyOnResponse (res) {
    debug('request "response" event');
  
    var s = res;
    var metaint = res.headers['icy-metaint'];
    if (metaint) {
      debug('got metaint: %d', metaint);
      s = new Reader(metaint);
      res.pipe(s);
  
      s.res = res;
  
      Object.keys(res).forEach(function (k) {
        if ('_' === k[0]) return;
        debug('proxying %j', k);
        proxy(s, k);
      });
    }
    if (res.connection._wasIcy) {
      s.httpVersion = 'ICY';
    }
    this.emit('icyResponse', s);
  }