code: // 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.devtools.v85;
  
  import static java.net.HttpURLConnection.HTTP_OK;
  
  import com.google.common.collect.ImmutableList;
  import com.google.common.io.ByteStreams;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.AbstractMap;
  import java.util.Base64;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  import java.util.Optional;
  import java.util.logging.Logger;
  import org.openqa.selenium.UsernameAndPassword;
  import org.openqa.selenium.devtools.Command;
  import org.openqa.selenium.devtools.DevTools;
  import org.openqa.selenium.devtools.DevToolsException;
  import org.openqa.selenium.devtools.Event;
  import org.openqa.selenium.devtools.idealized.Network;
  import org.openqa.selenium.devtools.v85.fetch.Fetch;
  import org.openqa.selenium.devtools.v85.fetch.model.AuthChallengeResponse;
  import org.openqa.selenium.devtools.v85.fetch.model.AuthRequired;
  import org.openqa.selenium.devtools.v85.fetch.model.HeaderEntry;
  import org.openqa.selenium.devtools.v85.fetch.model.RequestPattern;
  import org.openqa.selenium.devtools.v85.fetch.model.RequestPaused;
  import org.openqa.selenium.devtools.v85.fetch.model.RequestStage;
  import org.openqa.selenium.devtools.v85.network.model.Request;
  import org.openqa.selenium.internal.Either;
  import org.openqa.selenium.remote.http.HttpRequest;
  import org.openqa.selenium.remote.http.HttpResponse;
  
  public class V85Network extends Network<AuthRequired, RequestPaused> {
  
    private static final Logger LOG = Logger.getLogger(V85Network.class.getName());
  
    public V85Network(DevTools devTools) {
      super(devTools);
    }
  
    @Override
    protected Command<Void> setUserAgentOverride(UserAgent userAgent) {
      return org.openqa.selenium.devtools.v85.network.Network.setUserAgentOverride(
          userAgent.userAgent(), userAgent.acceptLanguage(), userAgent.platform(), Optional.empty());
    }
  
    @Override
    protected Command<Void> enableNetworkCaching() {
      return org.openqa.selenium.devtools.v85.network.Network.setCacheDisabled(false);
    }
  
    @Override
    protected Command<Void> disableNetworkCaching() {
      return org.openqa.selenium.devtools.v85.network.Network.setCacheDisabled(true);
    }
  
    @Override
    protected Command<Void> enableFetchForAllPatterns() {
      return Fetch.enable(
          Optional.of(
              ImmutableList.of(
                  new RequestPattern(
                      Optional.of("*"), Optional.empty(), Optional.of(RequestStage.REQUEST)),
                  new RequestPattern(
                      Optional.of("*"), Optional.empty(), Optional.of(RequestStage.RESPONSE)))),
          Optional.of(true));
    }
  
    @Override
    protected Command<Void> disableFetch() {
      return Fetch.disable();
    }
  
    @Override
    protected Event<AuthRequired> authRequiredEvent() {
      return Fetch.authRequired();
    }
  
    @Override
    protected String getUriFrom(AuthRequired authRequired) {
      return authRequired.getAuthChallenge().getOrigin();
    }
  
    @Override
    protected Command<Void> continueWithAuth(
        AuthRequired authRequired, UsernameAndPassword credentials) {
      return Fetch.continueWithAuth(
          authRequired.getRequestId(),
          new AuthChallengeResponse(
              AuthChallengeResponse.Response.PROVIDECREDENTIALS,
              Optional.of(credentials.username()),
              Optional.ofNullable(credentials.password())));
    }
  
    @Override
    protected Command<Void> cancelAuth(AuthRequired authRequired) {
      return Fetch.continueWithAuth(
          authRequired.getRequestId(),
          new AuthChallengeResponse(
              AuthChallengeResponse.Response.CANCELAUTH, Optional.empty(), Optional.empty()));
    }
  
    @Override
    public Event<RequestPaused> requestPausedEvent() {
      return Fetch.requestPaused();
    }
  
    @Override
    public Either<HttpRequest, HttpResponse> createSeMessages(RequestPaused pausedReq) {
      if (pausedReq.getResponseStatusCode().isPresent()
          || pausedReq.getResponseErrorReason().isPresent()) {
        String body;
        boolean bodyIsBase64Encoded;
  
        try {
          Fetch.GetResponseBodyResponse base64Body =
              devTools.send(Fetch.getResponseBody(pausedReq.getRequestId()));
          body = base64Body.getBody();
          bodyIsBase64Encoded =
              base64Body.getBase64Encoded() != null && base64Body.getBase64Encoded();
        } catch (DevToolsException e) {
          // Redirects don't seem to have bodies
          int code = pausedReq.getResponseStatusCode().orElse(HTTP_OK);
          if (code < 300 && code > 399) {
            LOG.warning("Unable to get body for request id " + pausedReq.getRequestId());
          }
  
          body = null;
          bodyIsBase64Encoded = false;
        }
  
        List<Map.Entry<String, String>> headers = new LinkedList<>();
        pausedReq
            .getResponseHeaders()
            .ifPresent(
                resHeaders ->
                    resHeaders.forEach(
                        header ->
                            headers.add(
                                new AbstractMap.SimpleEntry<>(header.getName(), header.getValue()))));
  
        HttpResponse res =
            createHttpResponse(pausedReq.getResponseStatusCode(), body, bodyIsBase64Encoded, headers);
  
        return Either.right(res);
      }
  
      Request cdpReq = pausedReq.getRequest();
  
      HttpRequest req =
          createHttpRequest(
              cdpReq.getMethod(), cdpReq.getUrl(), cdpReq.getHeaders(), cdpReq.getPostData());
  
      return Either.left(req);
    }
  
    @Override
    protected String getRequestId(RequestPaused pausedReq) {
      return pausedReq.getRequestId().toString();
    }
  
    @Override
    protected Command<Void> continueWithoutModification(RequestPaused pausedRequest) {
      return Fetch.continueRequest(
          pausedRequest.getRequestId(),
          Optional.empty(),
          Optional.empty(),
          Optional.empty(),
          Optional.empty());
    }
  
    @Override
    protected Command<Void> continueRequest(RequestPaused pausedReq, HttpRequest req) {
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      try (InputStream is = req.getContent().get()) {
        ByteStreams.copy(is, bos);
      } catch (IOException e) {
        return continueWithoutModification(pausedReq);
      }
  
      List<HeaderEntry> headers = new LinkedList<>();
      req.getHeaderNames()
          .forEach(
              name ->
                  req.getHeaders(name).forEach(value -> headers.add(new HeaderEntry(name, value))));
  
      return Fetch.continueRequest(
          pausedReq.getRequestId(),
          Optional.empty(),
          Optional.of(req.getMethod().toString()),
          Optional.of(Base64.getEncoder().encodeToString(bos.toByteArray())),
          Optional.of(headers));
    }
  
    @Override
    protected Command<Void> fulfillRequest(RequestPaused pausedReq, HttpResponse res) {
      List<HeaderEntry> headers = new LinkedList<>();
      res.getHeaderNames()
          .forEach(
              name ->
                  res.getHeaders(name).forEach(value -> headers.add(new HeaderEntry(name, value))));
  
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      try (InputStream is = res.getContent().get()) {
        ByteStreams.copy(is, bos);
      } catch (IOException e) {
        bos.reset();
      }
  
      return Fetch.fulfillRequest(
          pausedReq.getRequestId(),
          res.getStatus(),
          Optional.of(headers),
          Optional.empty(),
          Optional.of(Base64.getEncoder().encodeToString(bos.toByteArray())),
          Optional.empty());
    }
  }
  