Chrome DevTools Network Features

Network features using CDP.

While Selenium 4 provides direct access to the Chrome DevTools Protocol, these methods will eventually be removed when WebDriver BiDi implemented.

Basic authentication

Some applications make use of browser authentication to secure pages. It used to be common to handle them in the URL, but browsers stopped supporting this. With this code you can insert the credentials into the header when necessary

    Predicate<URI> uriPredicate = uri -> uri.toString().contains("herokuapp.com");
    Supplier<Credentials> authentication = UsernameAndPassword.of("admin", "admin");
    ((HasAuthentication) driver).register(uriPredicate, authentication);

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        credentials = base64.b64encode("admin:admin".encode()).decode()
        auth = {'authorization': 'Basic ' + credentials}
        await connection.session.execute(connection.devtools.network.set_extra_http_headers(Headers(auth)))

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            var handler = new NetworkAuthenticationHandler()
            {
                UriMatcher = uri => uri.AbsoluteUri.Contains("herokuapp"),
                Credentials = new PasswordCredentials("admin", "admin")
            };
            var networkInterceptor = driver.Manage().Network;
            networkInterceptor.AddAuthenticationHandler(handler);
            await networkInterceptor.StartMonitoring();

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    driver.register(username: 'admin',
                    password: 'admin',
                    uri: /herokuapp/)

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Implementation Missing

Network Interception

Both requests and responses can be recorded or transformed.

Response information

    try (NetworkInterceptor ignored =
        new NetworkInterceptor(
            driver,
            (Filter)
                next ->
                    req -> {
                      HttpResponse res = next.execute(req);
                      contentType.add(res.getHeader("Content-Type"));
                      return res;
                    })) {

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Implementation Missing

            INetwork networkInterceptor = driver.Manage().Network;
            networkInterceptor.NetworkResponseReceived += (_, e)  =>
            {
                contentType.Add(e.ResponseHeaders["content-type"]);
            };
            await networkInterceptor.StartMonitoring();

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    driver.intercept do |request, &continue|
      continue.call(request) do |response|
        content_type << response.headers['content-type']
      end
    end

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Implementation Missing

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Response transformation

    try (NetworkInterceptor ignored =
        new NetworkInterceptor(
            driver,
            Route.matching(req -> true)
                .to(
                    () ->
                        req ->
                            new HttpResponse()
                                .setStatus(200)
                                .addHeader("Content-Type", MediaType.HTML_UTF_8.toString())
                                .setContent(Contents.utf8String("Creamy, delicious cheese!"))))) {

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Implementation Missing

            var handler = new NetworkResponseHandler()
            {
                ResponseMatcher = _ => true,
                ResponseTransformer = _ => new HttpResponseData
                {
                    StatusCode = 200,
                    Body = "Creamy, delicious cheese!"
                }
            };
            INetwork networkInterceptor = driver.Manage().Network;
            networkInterceptor.AddResponseHandler(handler);
            await networkInterceptor.StartMonitoring();

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    driver.intercept do |request, &continue|
      continue.call(request) do |response|
        response.body = 'Creamy, delicious cheese!' if request.url.include?('blank')
      end
    end

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Implementation Missing

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Request interception

    try (NetworkInterceptor ignored =
        new NetworkInterceptor(
            driver,
            (Filter)
                next ->
                    req -> {
                      if (req.getUri().contains("one.js")) {
                        req =
                            new HttpRequest(
                                HttpMethod.GET, req.getUri().replace("one.js", "two.js"));
                      }
                      completed.set(true);
                      return next.execute(req);
                    })) {

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Implementation Missing

            var handler = new NetworkRequestHandler
            {
                RequestMatcher = request => request.Url.Contains("one.js"),
                RequestTransformer = request =>
                {
                    request.Url = request.Url.Replace("one", "two");

                    return request;
                }
            };
            INetwork networkInterceptor = driver.Manage().Network;
            networkInterceptor.AddRequestHandler(handler);
            await networkInterceptor.StartMonitoring();

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    driver.intercept do |request, &continue|
      uri = URI(request.url)
      request.url = uri.to_s.gsub('one', 'two') if uri.path&.end_with?('one.js')
      continue.call(request)
    end

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Implementation Missing

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Performance Metrics

    devTools.send(Performance.enable(Optional.empty()));
    List<Metric> metricList = devTools.send(Performance.getMetrics());

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    async with driver.bidi_connection() as connection:
        await connection.session.execute(connection.devtools.performance.enable())
        metric_list = await connection.session.execute(connection.devtools.performance.get_metrics())

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            await domains.Performance.Enable(new OpenQA.Selenium.DevTools.V132.Performance.EnableCommandSettings());
            var metricsResponse =
                await session.SendCommand<GetMetricsCommandSettings, GetMetricsCommandResponse>(
                    new GetMetricsCommandSettings()
                );

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    driver.devtools.performance.enable
    metric_list = driver.devtools.performance.get_metrics.dig('result', 'metrics')

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Implementation Missing

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Setting Cookies

    devTools.send(
            Network.setCookie(
                    "cheese",
                    "gouda",
                    Optional.empty(),
                    Optional.of("www.selenium.dev"),
                    Optional.empty(),
                    Optional.of(true),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    Optional.empty()));

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    async with driver.bidi_connection() as connection:
        execution = connection.devtools.network.set_cookie(
            name="cheese",
            value="gouda",
            domain="www.selenium.dev",
            secure=True
        )
        await connection.session.execute(execution)

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            var cookieCommandSettings = new SetCookieCommandSettings
            {
                Name = "cheese",
                Value = "gouda",
                Domain = "www.selenium.dev",
                Secure = true
            };
            await domains.Network.SetCookie(cookieCommandSettings);

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    driver.devtools.network.set_cookie(name: 'cheese',
                                       value: 'gouda',
                                       domain: 'www.selenium.dev',
                                       secure: true)

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Implementation Missing

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Waiting for Downloads

    devTools.send(
            Browser.setDownloadBehavior(
                    Browser.SetDownloadBehaviorBehavior.ALLOWANDNAME,
                    Optional.empty(),
                    Optional.of(""),
                    Optional.of(true)));

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Implementation Missing

    driver.devtools.browser.set_download_behavior(behavior: 'allow',
                                                  download_path: '',
                                                  events_enabled: true)

    driver.devtools.browser.on(:download_progress) do |progress|
      @completed = progress['state'] == 'completed'
    end