How to use ConnectionFailedException class of org.openqa.selenium.remote.http package

Best Selenium code snippet using org.openqa.selenium.remote.http.ConnectionFailedException

ConnectionFailedException org.openqa.selenium.remote.http.ConnectionFailedException

The ConnectionFailedException occured when client is not able to establish connection with selenium hub or webdriver endpoints.

Example

It is an example code for setting up the chrome browser. If the browser has crashed during the webdriver initialization process then client throws the ConnectionFailedException

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1System.setProperty("webdriver.chrome.driver", FilePath + "\drivers\chromedriver.exe");
2HashMap<String, Object> chromePrefs = new HashMap<String, Object>();
3chromePrefs.put("profile.default_content_settings.popups", 0);
4chromePrefs.put("download.default_directory", FilePath);
5ChromeOptions options = new ChromeOptions();
6HashMap<String, Object> chromeOptionsMap = new HashMap<String, Object>();
7options.setExperimentalOption("prefs", chromePrefs);
8options.addArguments("--disable-notifications");
9options.addArguments("--disable-popup-blocking");
10options.addArguments("--headless");
11options.addArguments("--disable-gpu");
12options.setCapability(ChromeOptions.CAPABILITY, chromeOptionsMap);
13options.setCapability(CapabilityType.ACCEPT_SSL_CERTS, true);
14options.setCapability(ChromeOptions.CAPABILITY, options);
15options.setPageLoadStrategy(PageLoadStrategy.NORMAL);
16driver = new ChromeDriver(options);

the output of error will looks as follow

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1org.openqa.selenium.remote.http.ConnectionFailedException: Unable to establish websocket connection to http://localhost:60650/devtools/browser/9faa33dd-c789-47f4-acab-261acc7045e7
2Build info: version: '4.0.0-beta-3', revision: '5d108f9a67'
3System info: host: 'xxx', ip: 'xxx', os.name: 'Windows Server 2016', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_202'
4Driver info: driver.version: ChromeDriver
5    at org.openqa.selenium.remote.http.netty.NettyWebSocket.<init>(NettyWebSocket.java:104)
6    at org.openqa.selenium.remote.http.netty.NettyWebSocket.lambda$create$3(NettyWebSocket.java:136)
7    at org.openqa.selenium.remote.http.netty.NettyClient.openSocket(NettyClient.java:111)
8    at org.openqa.selenium.devtools.Connection.<init>(Connection.java:73)
9    at org.openqa.selenium.chromium.ChromiumDriver.lambda$new$1(ChromiumDriver.java:102)
10    at java.util.Optional.map(Unknown Source)
11    at org.openqa.selenium.chromium.ChromiumDriver.<init>(ChromiumDriver.java:100)
12    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:99)
13    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:86)
14    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:75)
15    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
17    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
18    at java.lang.reflect.Method.invoke(Unknown Source)
19    org.openqa.selenium.remote.http.ConnectionFailedException: Unable to establish websocket connection to http://localhost:60650/devtools/browser/9faa33dd-c789-47f4-acab-261acc7045e7
20Build info: version: '4.0.0-beta-3', revision: '5d108f9a67'
21System info: host: 'xxx', ip: 'xxx', os.name: 'Windows Server 2016', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_202'
22Driver info: driver.version: ChromeDriver
23    at org.openqa.selenium.remote.http.netty.NettyWebSocket.<init>(NettyWebSocket.java:104)
24    at org.openqa.selenium.remote.http.netty.NettyWebSocket.lambda$create$3(NettyWebSocket.java:136)
25    at org.openqa.selenium.remote.http.netty.NettyClient.openSocket(NettyClient.java:111)
26    at org.openqa.selenium.devtools.Connection.<init>(Connection.java:73)
27    at org.openqa.selenium.chromium.ChromiumDriver.lambda$new$1(ChromiumDriver.java:102)
28    at java.util.Optional.map(Unknown Source)
29    at org.openqa.selenium.chromium.ChromiumDriver.<init>(ChromiumDriver.java:100)
30    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:99)
31    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:86)
32    at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:75)
33    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
34    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
35    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
36    at java.lang.reflect.Method.invoke(Unknown Source)

Solutions

  • Check browser crash logs
  • Check /dev/shm partition size, Small sizes often crash browsers especially in docker
  • Try to execute with below flags
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1options.addArguments("--no-sandbox");
2options.addArguments("--disable-dev-shm-usage");

Code Snippets

Here are code snippets that can help you understand more how developers are using

Source:WebSocketServingTest.java Github

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...21import org.openqa.selenium.grid.config.MapConfig;22import org.openqa.selenium.grid.server.BaseServerOptions;23import org.openqa.selenium.grid.server.Server;24import org.openqa.selenium.net.PortProber;25import org.openqa.selenium.remote.http.ConnectionFailedException;26import org.openqa.selenium.remote.http.Contents;27import org.openqa.selenium.remote.http.HttpClient;28import org.openqa.selenium.remote.http.HttpRequest;29import org.openqa.selenium.remote.http.HttpResponse;30import org.openqa.selenium.remote.http.Message;31import org.openqa.selenium.remote.http.TextMessage;32import org.openqa.selenium.remote.http.WebSocket;33import org.openqa.selenium.support.ui.FluentWait;34import org.openqa.selenium.testing.Safely;35import java.util.LinkedList;36import java.util.List;37import java.util.Optional;38import java.util.concurrent.CountDownLatch;39import java.util.concurrent.Executors;40import java.util.concurrent.ScheduledExecutorService;41import java.util.concurrent.atomic.AtomicBoolean;42import java.util.function.BiFunction;43import java.util.function.Consumer;44import static java.util.concurrent.TimeUnit.MILLISECONDS;45import static java.util.concurrent.TimeUnit.SECONDS;46import static org.assertj.core.api.Assertions.assertThat;47import static org.openqa.selenium.remote.http.Contents.utf8String;48import static org.openqa.selenium.remote.http.HttpMethod.GET;49public class WebSocketServingTest {50 private Server<?> server;51 @After52 public void shutDown() {53 Safely.safelyCall(() -> server.stop());54 }55 @Test(expected = ConnectionFailedException.class)56 public void clientShouldThrowAnExceptionIfUnableToConnectToAWebSocketEndPoint() {57 server = new NettyServer(defaultOptions(), req -> new HttpResponse()).start();58 HttpClient client = HttpClient.Factory.createDefault().createClient(server.getUrl());59 client.openSocket(new HttpRequest(GET, "/does-not-exist"), new WebSocket.Listener() {});60 }61 @Test62 public void shouldUseUriToChooseWhichWebSocketHandlerToUse() throws InterruptedException {63 AtomicBoolean foo = new AtomicBoolean(false);64 AtomicBoolean bar = new AtomicBoolean(false);65 BiFunction<String, Consumer<Message>, Optional<Consumer<Message>>> factory = (str, sink) -> {66 if ("/foo".equals(str)) {67 return Optional.of(msg -> {68 foo.set(true);69 sink.accept(new TextMessage("Foo called"));...

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Source:NettyWebSocket.java Github

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...24import org.openqa.selenium.internal.Require;25import org.openqa.selenium.remote.http.BinaryMessage;26import org.openqa.selenium.remote.http.ClientConfig;27import org.openqa.selenium.remote.http.CloseMessage;28import org.openqa.selenium.remote.http.ConnectionFailedException;29import org.openqa.selenium.remote.http.Filter;30import org.openqa.selenium.remote.http.HttpRequest;31import org.openqa.selenium.remote.http.HttpResponse;32import org.openqa.selenium.remote.http.Message;33import org.openqa.selenium.remote.http.TextMessage;34import org.openqa.selenium.remote.http.WebSocket;35import java.net.MalformedURLException;36import java.net.URI;37import java.net.URISyntaxException;38import java.net.URL;39import java.util.concurrent.ExecutionException;40import java.util.concurrent.atomic.AtomicReference;41import java.util.function.BiFunction;42import java.util.function.Function;43import java.util.logging.Level;44import java.util.logging.Logger;45class NettyWebSocket implements WebSocket {46 private static final Logger log = Logger.getLogger(NettyWebSocket.class.getName());47 private final org.asynchttpclient.ws.WebSocket socket;48 private NettyWebSocket(AsyncHttpClient client, Request request, Listener listener) {49 Require.nonNull("HTTP client", client);50 Require.nonNull("WebSocket listener", listener);51 try {52 URL origUrl = new URL(request.getUrl());53 String wsScheme = "https".equalsIgnoreCase(origUrl.getProtocol()) ? "wss" : "ws";54 URI wsUri = new URI(wsScheme, null, origUrl.getHost(), origUrl.getPort(), origUrl.getPath(), null, null);55 ListenableFuture<org.asynchttpclient.netty.ws.NettyWebSocket> future =56 client.prepareGet(wsUri.toString()).execute(57 new WebSocketUpgradeHandler.Builder().addWebSocketListener(new WebSocketListener() {58 @Override59 public void onOpen(org.asynchttpclient.ws.WebSocket websocket) {60 }61 @Override62 public void onClose(org.asynchttpclient.ws.WebSocket websocket, int code, String reason) {63 listener.onClose(code, reason);64 }65 @Override66 public void onError(Throwable t) {67 listener.onError(t);68 }69 @Override70 public void onBinaryFrame(byte[] payload, boolean finalFragment, int rsv) {71 if (payload != null) {72 listener.onBinary(payload);73 }74 }75 @Override76 public void onTextFrame(String payload, boolean finalFragment, int rsv) {77 if (payload != null) {78 listener.onText(payload);79 }80 }81 }).build());82 socket = future.toCompletableFuture()83 .exceptionally(t -> {84 log.log(Level.WARNING, t.getMessage(), t);85 return null;86 })87 .get();88 if (socket == null) {89 throw new ConnectionFailedException("Unable to establish websocket connection to " + request.getUrl());90 }91 } catch (InterruptedException e) {92 Thread.currentThread().interrupt();93 log.log(Level.WARNING, "NettyWebSocket initial request interrupted", e);94 throw new ConnectionFailedException("NettyWebSocket initial request interrupted", e);95 } catch (ExecutionException | MalformedURLException | URISyntaxException e) {96 throw new ConnectionFailedException("NettyWebSocket initial request execution error", e);97 }98 }99 static BiFunction<HttpRequest, Listener, WebSocket> create(ClientConfig config, AsyncHttpClient client) {100 Filter filter = config.filter();101 Function<HttpRequest, HttpRequest> filterRequest = req -> {102 AtomicReference<HttpRequest> ref = new AtomicReference<>();103 filter.andFinally(in -> {104 ref.set(in);105 return new HttpResponse();106 }).execute(req);107 return ref.get();108 };109 return (req, listener) -> {110 HttpRequest filtered = filterRequest.apply(req);...

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.remote.http.HttpHandler;3import org.openqa.selenium.remote.http.HttpRequest;4import org.openqa.selenium.remote.http.HttpResponse;5import org.openqa.selenium.remote.http.HttpClient;6import org.openqa.selenium.remote.http.HttpTimeouts;7import org.openqa.selenium.remote.http.HttpClient.Factory;8import org.openqa.selenium.remote.http.HttpClient.Builder;9import org.openqa.selenium.remote.http.HttpClient.Builder;10public class ConnectionFailedExceptionDemo {11 public static void main(String[] args) {12 ConnectionFailedException cfe = new ConnectionFailedException("Connection Failed");13 System.out.println(cfe.getMessage());14 System.out.println(cfe.getCause());15 cfe.printStackTrace();16 HttpHandler handler = new HttpHandler() {17 public HttpResponse execute(HttpRequest request) throws IOException {18 return null;19 }20 };21 HttpClient client = new HttpClient() {22 public HttpResponse execute(HttpRequest request) throws IOException {23 return null;24 }25 };26 HttpTimeouts timeouts = new HttpTimeouts() {27 public void setReadTimeout(Duration readTimeout) {28 }29 public void setConnectionTimeout(Duration connectionTimeout) {30 }31 public Duration getReadTimeout() {

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.remote.http.HttpHandler;3import org.openqa.selenium.remote.http.HttpRequest;4import org.openqa.selenium.remote.http.HttpResponse;5import org.openqa.selenium.remote.http.UrlFilter;6import org.openqa.selenium.WebDriverException;7import org.openqa.selenium.WebDriver;8import org.openqa.selenium.WebDriverException;9import org.openqa.selenium.WebDriver;10import org.openqa.selenium.WebDriverException;11import org.openqa.selenium.WebDriver;12import org.openqa.selenium.WebDriverException;13import org.openqa.selenium.WebDriver;14import org.openqa.selenium.WebDriverException;15import org.openqa.selenium.WebDriver;16import org.openqa.selenium.WebDriverException;17import org.openqa.selenium.WebDriver;18import org.openqa.selenium.WebDriverException;19import org.openqa.selenium.WebDriver;20import org.openqa.selenium.WebDriverException;21import org.openqa.selenium.WebDriver;22import org.openqa.selenium.WebDriverException;23import org.openqa.selenium.WebDriver;24import org.openqa.selenium.WebDriverException;25import org.openqa.selenium.WebDriver;26import

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.WebDriverException;3import org.openqa.selenium.NoSuchElementException;4import org.openqa.selenium.support.ui.TimeoutException;5import org.openqa.selenium.support.ui.FluentWait;6import org.openqa.selenium.By;7import org.openqa.selenium.WebElement;8import org.openqa.selenium.chrome.ChromeDriver;9import org.openqa.selenium.chrome.ChromeOptions;10import org.openqa.selenium.remote.DesiredCapabilities;11import java.io.File;12import java.util.concurrent.TimeUnit;13import java.util.concurrent.TimeUnit;14import org.openqa.selenium.support.ui.WebDriverWait;15import org.openqa.selenium.support.ui.ExpectedConditions;16import org.openqa.selenium.interactions.Actions;17import org.openqa.selenium.Keys;18import org.openqa.selenium.JavascriptExecutor;19import org.openqa.selenium.Alert;20import org.openqa.selenium.Dimension;21import org.openqa.selenium.Point;22import org.openqa.selenium.WebElement;23import org.openqa.selenium.support.ui.WebDriverWait;24import org.openqa.selenium.support.ui.ExpectedConditions;25import org.openqa

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.remote.http.ConnectionClosedException;3import java.io.IOException;4import org.openqa.selenium.WebDriver;5import org.openqa.selenium.remote.RemoteWebDriver;6import org.openqa.selenium.remote.DesiredCapabilities;7import java.net.URL;8import org.openqa.selenium.BrowserType;9import org.openqa.selenium.By;10import org.openqa.selenium.WebElement;11public class RemoteWebDriverExample {12 public static void main(String[] args) throws IOException {13 DesiredCapabilities caps = new DesiredCapabilities();14 caps.setBrowserName(BrowserType.CHROME);15 caps.setPlatform(org.openqa.selenium.Platform.WINDOWS);16 System.setProperty("webdriver.chrome.driver", "C:\\Users\\Dell\\Downloads\\chromedriver_win32\\chromedriver.exe");17 WebElement element = driver.findElement(By.name("q"));18 element.sendKeys("Selenium");19 element.submit();20 System.out.println("Page title is: " + driver.getTitle());21 driver.quit();22 }23}

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.WebDriverException;3import org.openqa.selenium.By;4import org.openqa.selenium.support.ui.ExpectedConditions;5import org.openqa.selenium.support.ui.WebDriverWait;6import org.openqa.selenium.remote.DesiredCapabilities;7import io.appium.java_client.android.AndroidDriver;8import java.net.URL;9import java.net.MalformedURLException;10import java.util.concurrent.TimeUnit;11import org.openqa.selenium.WebElement;12import io.appium.java_client.TouchAction;13import io.appium.java_client.android.AndroidElement;14import io.appium.java_client.MobileElement;15import io.appium.java_client.MobileBy;16import io.appium.java_client.MobileDriver;17import io.appium.java_client.MobileElement;18import io.appium.java_client.TouchAction;19import io.appium.java_client.AppiumDriver;20import io.appium.java_client.TouchAction;21import io.appium.java_client.touch.offset.PointOption;22import io.appium.java_client.TouchAction;

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ConnectionFailedException

Using AI Code Generation

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1import org.openqa.selenium.remote.http.ConnectionFailedException;2import org.openqa.selenium.WebDriverException;3import org.openqa.selenium.remote.RemoteWebDriver;4import org.openqa.selenium.remote.DesiredCapabilities;5import java.net.URL;6import java.net.MalformedURLException;7import org.openqa.selenium.chrome.ChromeDriver;8import org.openqa.selenium.firefox.FirefoxDriver;9import org.openqa.selenium.ie.InternetExplorerDriver;10import org.openqa.selenium.edge.EdgeDriver;11import org.openqa.selenium.safari.SafariDriver;12import org.openqa.selenium.opera.OperaDriver;13import org.openqa.selenium.phantomjs.PhantomJSDriver;14import org.openqa.selenium.edge.EdgeOptions;15import org.openqa.selenium.opera.OperaOptions;16import org.openqa.selenium.phantomjs.PhantomJSOptions;17import org.openqa.selenium.chrome.ChromeOptions;18import org.openqa.selenium.firefox.FirefoxOptions;19import org.openqa.selenium.ie.InternetExplorerOptions;20import org.openqa.selenium.safari.SafariOptions;21import org.openqa.selenium.remote.DesiredCapabilities;22import org

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ConnectionFailedException

Using AI Code Generation

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1package org.example;2import org.openqa.selenium.remote.http.ConnectionFailedException;3import org.openqa.selenium.remote.http.HttpClient;4import org.openqa.selenium.remote.http.HttpRequest;5import org.openqa.selenium.remote.http.HttpResponse;6import java.io.IOException;7public class ConnectionFailedExceptionExample {8 public static void main(String[] args) {9 HttpClient client = new HttpClient();10 try {11 HttpResponse response = client.execute(request);12 System.out.println("Response Status Code: " + response.getStatus());13 } catch (IOException e) {14 if (e instanceof ConnectionFailedException) {15 System.out.println("Connection Failed Exception: " + e.getMessage());16 }17 }18 }19}

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Source: Make java call to python and show response ...

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1import com.google.common.base.Charsets;2import com.google.common.io.Files;34// ...56String text = Files.toString(new File(path), Charsets.UTF_8);7
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...

Source:Make java call to python and show response

import com.google.common.base.Charsets;
import com.google.common.io.Files;

// ...

String text = Files.toString(new File(path), Charsets.UTF_8);

Source: What should I do if the creting a connection failed? ...

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1import java.nio.file.Files;2
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...

Source:What should I do if the creting a connection failed?

import java.nio.file.Files;

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