chromedriver 失去连接 "randomly" ， 保持活动失败

Question

我正在为我们的Web应用程序运行自动测试。看似随机的，它会失去与 Web 驱动程序的连接，并在尝试单击站点上的元素时显示以下异常。

OpenQA.Selenium.WebDriverException: 'A exception with a null response was
thrown sending an HTTP request to the remote WebDriver server for URL 
http://localhost:51838/session/0adcb677d8062f712728d3aeb011e63e/element/
743947cc-ce53-4d82-a020-3ac9d6a6e6af/click.
The status of the exception was KeepAliveFailure, and the message was:
The underlying connection was closed: A connection that was expected to
be kept alive was closed by the server.'

内部例外：

套接字异常：

An existing connection was forcibly closed by the remote host

IOException：

Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

网页异常：

<i>The underlying connection was closed: A connection that was expected to be kept alive was closed by the server.

错误堆栈跟踪：

at OpenQA.Selenium.Remote.HttpCommandExecutor.MakeHttpRequest(HttpRequestInfo requestInfo)
at OpenQA.Selenium.Remote.HttpCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.DriverServiceCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.Remote.RemoteWebElement.Execute(String commandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.Remote.RemoteWebElement.Click()
at OpenQA.Selenium.Remote.RemoteWebElement.Submit()
at ACT.Web.Ui.Tests.PageCommands.DefaultCommand.LoginToAzure(String azureLogin, String azurePassword) in C:Dataszypr002My DocumentsactACT.Web.Ui.TestsPageCommandsDefaultCommand.cs:line 43
at ACT.Web.Ui.Tests.StepDefinitions.LoginPageSteps.WhenILoginToActAs(String user) in C:Dataszypr002My DocumentsactACT.Web.Ui.TestsStepDefinitionsLoginPageSteps.cs:line 26
at ACT.Web.Ui.Tests.StepDefinitions.LoginPageSteps.GivenICanLoginToAct() in C:Dataszypr002My DocumentsactACT.Web.Ui.TestsStepDefinitionsLoginPageSteps.cs:line 17
at lambda_method(Closure , IContextManager )

Answer 1

我会尝试为您的ChromeOptions添加一些额外的设置，如下所示：

var options = new ChromeOptions();
options.AddArgument("--disable-impl-side-painting"); //To fix no such session exception which appears when running tests for a prolonged period
options.AddArgument("--disable-extensions");
options.AddArguments("disable-infobars");
options.AddArgument("--no-sandbox");
driver = new ChromeDriver(options);

具体来说，--no-sandbox和--disable-impl-side-painting可能有助于解决连接已关闭的问题。