Middleware proposal

middle.js

var MY_ID = "..";

reactor.use({
  queried: function (rpc) {
    rpc.quering = new Peer(rpc.queryingAddress, rpc.params.id);

    rpc.onComplete(function(peers) {
      rpc.response = rpc.response || {};

      rpc.response.nodes = peers.toRawArray();
      rpc.response.id = MY_ID;
    });
  },
  querying: function(rpc) {
    rpc.queriedAddress = rpc.queried.getAddress();

    rpc.params = rpc.params || {};
    rpc.params.id = MY_ID;

    rpc.on("response", function(response) {

      if(response.id !== rpc.queried.getId()) {
        rpc.reject(new Error("bad ID"));
        reactor.log.warning("Spoofing attack");
        return;
      }
      
      rpc.resolve(new PeerArray(response.nodes));
    });
  }
});