// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.openqa.selenium.grid.web;

import org.openqa.selenium.internal.Require;
import org.openqa.selenium.remote.http.ClientConfig;
import org.openqa.selenium.remote.http.HttpClient;
import org.openqa.selenium.remote.http.HttpRequest;
import org.openqa.selenium.remote.http.HttpResponse;
import org.openqa.selenium.remote.http.WebSocket;

import java.io.UncheckedIOException;
import java.net.URI;
import java.net.URL;

import static org.openqa.selenium.remote.http.Contents.utf8String;

public class RoutableHttpClientFactory implements HttpClient.Factory {

  private final URL self;
  private final CombinedHandler handler;
  private final HttpClient.Factory delegate;

  public RoutableHttpClientFactory(URL self, CombinedHandler handler, HttpClient.Factory delegate) {
    this.self = Require.nonNull("URL", self);
    this.handler = Require.nonNull("Handler", handler);
    this.delegate = Require.nonNull("Delegate", delegate);
  }

  @Override
  public HttpClient createClient(ClientConfig config) {
    Require.nonNull("Client config", config);

    URI url = config.baseUri();

    if (self.getProtocol().equals(url.getScheme()) &&
      self.getHost().equals(url.getHost()) &&
      self.getPort() == url.getPort()) {

      return new HttpClient() {
        @Override
        public HttpResponse execute(HttpRequest request) throws UncheckedIOException {
          HttpResponse response = new HttpResponse();

          if (!handler.test(request)) {
            response.setStatus(404);
            response.setContent(utf8String("Unable to route " + request));
            return response;
          }

          return handler.execute(request);
        }

        @Override
        public WebSocket openSocket(HttpRequest request, WebSocket.Listener listener) {
          throw new UnsupportedOperationException("openSocket");
        }
      };
    }

    return delegate.createClient(config);
  }

  @Override
  public void cleanupIdleClients() {
    delegate.cleanupIdleClients();
  }
}

@@ -836,16 +836,72 @@
 d.web;%0A%0A
+import org.openqa.selenium.UnsupportedCommandException;%0A
 import o
@@ -1332,26 +1332,70 @@
 ontents.
-utf8String
+asJson;%0A%0Aimport com.google.common.collect.ImmutableMap
 ;%0A%0Apubli
@@ -2436,47 +2436,195 @@
 ent(
-utf8String(%22Unable to route %22 + request
+asJson(ImmutableMap.of(%0A              %22value%22, request.getUri(),%0A              %22message%22, %22Unable to route %22 + request,%0A              %22error%22, UnsupportedCommandException.class.getName())
 ));%0A

Use a valid json for error message