Selenium Grid Extras 2.0.4:org.openqa.Selenium。WebDriverException：转发新会话时出错

Question

我尝试从页面使用Selenium Grid Extras：https://github.com/groupon/Selenium-Grid-Extras

我成功地在我的私人机器上使用了它。配置之后，我运行了命令“java-jar Selenium Grid Extras jar.jar”(https://ibb.co/j4wZPH)，我可以通过转到地址来查看节点http://localhost:4444/grid/console:

我将附上此错误的完整日志：

kwi 24, 2018 12:07:06 PM org.openqa.selenium.remote.DesiredCapabilities chrome
INFO: Using `new ChromeOptions()` is preferred to DesiredCapabilities.chrome()`

org.openqa.selenium.WebDriverException: Error forwarding the new session 
Empty pool of VM for setup Capabilities {browserName: chrome, version: }
Command duration or timeout: 157 milliseconds
<4 internal calls>
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0(JsonWireProtocolResponse.java:53)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2(JsonWireProtocolResponse.java:91)
    at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:123)
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
    at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
    at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
    at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:126)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:73)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:209)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:132)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:145)
    at com.sii.BaseTest.RemoteWebdriverTestBaseDemoqa.setUp(RemoteWebdriverTestBaseDemoqa.java:27)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:523)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:146)
    at org.testng.TestRunner.beforeRun(TestRunner.java:626)
    at org.testng.TestRunner.run(TestRunner.java:594)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
    at org.testng.SuiteRunner.run(SuiteRunner.java:289)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1301)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1226)
    at org.testng.TestNG.runSuites(TestNG.java:1144)
    at org.testng.TestNG.run(TestNG.java:1115)
    at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)
Caused by: org.openqa.selenium.WebDriverException: Error forwarding the new session Empty pool of VM for setup Capabilities {browserName: chrome, version: }
Build info: version: '3.11.0', revision: 'e59cfb3', time: '2018-03-11T20:26:55.152Z'
System info: host: 'BXKBFH2', ip: '192.168.56.1', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_161'
Driver info: driver.version: unknown
    at org.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:118)
    at org.openqa.grid.web.servlet.DriverServlet.process(DriverServlet.java:86)
    at org.openqa.grid.web.servlet.DriverServlet.doPost(DriverServlet.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.seleniumhq.jetty9.servlet.ServletHolder.handle(ServletHolder.java:860)
    at org.seleniumhq.jetty9.servlet.ServletHandler.doHandle(ServletHandler.java:535)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
    at org.seleniumhq.jetty9.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
    at org.seleniumhq.jetty9.servlet.ServletHandler.doScope(ServletHandler.java:473)
    at org.seleniumhq.jetty9.server.session.SessionHandler.doScope(SessionHandler.java:1564)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
    at org.seleniumhq.jetty9.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
    at org.seleniumhq.jetty9.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.seleniumhq.jetty9.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.seleniumhq.jetty9.server.Server.handle(Server.java:530)
    at org.seleniumhq.jetty9.server.HttpChannel.handle(HttpChannel.java:347)
    at org.seleniumhq.jetty9.server.HttpConnection.onFillable(HttpConnection.java:256)
    at org.seleniumhq.jetty9.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
    at org.seleniumhq.jetty9.io.FillInterest.fillable(FillInterest.java:102)
    at org.seleniumhq.jetty9.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)
    at org.seleniumhq.jetty9.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
    at org.seleniumhq.jetty9.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)
    at org.seleniumhq.jetty9.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)
    at java.lang.Thread.run(Unknown Source)

我试图找出为什么我得到这个错误，并找到了答案（https://stackoverflow.com/a/42187314/7967616），即Selenium Grid没有任何可用的节点与具有所需功能的浏览器。

但在配置过程中，我为Selenium Grid Node设置了端口5555，它可以在我的私人笔记本电脑上工作。我在网上找不到答案，所以我的预感是这个端口有问题，但我不知道如何检查。

任何人都有类似的问题或问题，或者可以帮助我解决这个问题？将感谢任何帮助。

编辑

ChromeDriver版本为2.38（最新）

Chrome浏览器版本为66.0.3359.117（实际版本）

我确保我有最新版本的ChromeDriver和浏览器。

Answer 1

我的队友帮我解决了这个问题。我必须解锁Windows Defender防火墙中的端口。

• 转到Windows Defender Firewall（以管理员身份打开）

重复这些过程，但是：

• 转到“离开规则”
• 在“操作”部分中添加新规则-

重新启动系统并再次设置Selenium Grid Extras。成功了！

Answer 2

此错误消息...

Caused by: org.openqa.selenium.WebDriverException: Error forwarding the new session Empty pool of VM for setup Capabilities {browserName: chrome, version: }

...意味着ChromeDriver无法启动与WebClient即浏览器Chrome活动连接。

在缺乏ChromeDriver和ChromeBrowser版本控制信息的情况下，您使用的二进制文件之间似乎存在版本兼容性问题，如下所示：

• 我们不知道您的chromedriver版本

• 将ChromeDriver升级到当前的ChromeDriver v2.38版本

Answer 3

在防火墙中解锁selenium extras、集线器和节点端口，然后它就可以工作了