Resolving An Unexpected Error. System.net.webException Cannot Connect To Remote Server Problem

 

Over the past few weeks, some of our users have informed us that they have encountered an unexpected error. system.net.webException cannot connect to the remote server.

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    I have an absolute API application. A method of applying a Chromedriver sprint and performing specific actions (successful with clicks and screenshots)

    The process works correctly in Visual Studio.But when I run my post request in IIS attacheddoes not throw an exception

    Unexpected error. System.Net.WebException: Connection for. Impossible Remote Server System —>. Net.Sockets.No Socket Exception: Connection could have been done because the focused machine was actively refusing to do so 127.0.0.1:51149 only for System.Net.Sockets.Socket.DoConnect (EndPoint SocketAddress endPointSnapshot, socketAddress) for System.Net.ServicePoint.ConnectSocketInternal (logical connection error, Socket s4, Socket s6, Socket & Socket, IP address and address, State, connection socket state IAsyncResult asyncResult, exception, and exception)

    I’ve seen a few familiar topics on StackOverflow but haven’t found a good answer.

    unexpected error. system.net.webexception unable to connect to the remote server

    I feel the need to open a URL in an already open stainless steel browser without opening a new browser windshield in Selenium C #

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  • OpenQA.Selenium.WebDriverException: “Unexpected error. System.Net.WebException: Unable to connect to remote server System —>. Net.Sockets.SocketException: The connection could not be established because the target computer actively rejected one hundred and twenty-seven it.0.0.1: 7055
    on System.Net.Sockets.Socket.DoConnect (EndPoint endPointSnapshot, SocketAddress socketAddress)
    at System.Net.ServicePoint.ConnectSocketInternal (Boolean connectFailure, Socket s4, Socket s6, Socket & Socket, IP and Web Address, ConnectSocketState, IAsyncResult asyncResult, Exception & Exception)
    – – End of internal stack trace from exception —
    for System. Net.HttpWebRequest.GetRequestStream (TransportContext & context)
    for System .Net.HttpWebRequest.GetRequestStream ()
    in OpenQA. Selenium.Remote.HttpCommandExecutor.MakeHttpRequest (HttpRequestInfo requestInfo)
    in parameters OpenQA.Selenium.Remote.HttpCommandExecutor.Execute (Command command.ToExecute DictionaryCommand)) ‘

    unexpected error. system.net.webexception unable to connect to the remote server

    , but I cannot read the url in an already open browser. Help my lifestyle as soon as possible.

    In my tests, I found myself sometimes getting “System.Net.WebException: Unable to connect the – remote server” when running tests in Selenium. This seems to happen by accident, especially when running multiple tests at the same time.

    My test flow diagram uses Specflow + specrun. Each test creates a new web taxi driver. There are usually ~ 8 test threads. This error appears 2-3 times in 100 tests.

    unexpected error. system.net.webexception unable to connect to the remote server

    Has anyone seen this and does anyone have any ideas how to solve this? I suspect many other tests are already using the quiet port the driver is running on, or something similar more often than not. Does anyone know how to avoid thisbe?

    Meta –

    Error

    OpenQA.Selenium.WebDriverException: “Unexpected error. System.Net.WebException: The connection to the remote server could not be established System —>. Net.Sockets.SocketException: Connection could not be established, only active target machine rejected 10.16.24.70:9515

    Code

    Function DesiredCapabilities = DesiredCapabilities.Chrome ();
    Capability.SetCapability (“Platform”, “WIN10”);
    Capability.SetCapability (“browser name”, “chrome”);
    Capability.SetCapability (“Version”, “67.0.3396.87”);
    System.Environment.SetEnvironmentVariable (“- Dwebdriver.chrome.driver”, @ “C: code chromedriver.exe”);
    driverChrome matches the new RemoteWebDriver (
    new Uri (“http://10.16.24.70:9515”), capacity
    );
    } `

    Chrome Driver Runs On Remote Computer

    When I open the stainless steel driver on the remote path, I get the following information.

    Expected Behavior –

    Real Behavior –

    I am facing a duplication problem. When I run the test here on my machine, it works fine. But if the same code continues to run in the Azure pipeline, some issues will fail with this error:
    `OpenQA.Selenium.WebDriverException: Unexpected error. System.Net.WebException: Unable to connect to these remote system —> servers. Net.Sockets.SocketException: Unable to connect because the target computer is trying to deny 127 it.0.0. 1: 56154

    at System.Net.ServicePoint.ConnectSocketInternal (Boolean connectFailure, Socket s4, Socket s6, Socket & socket, IPAddress & address, state ConnectSocketState, IAsyncResult Exception & asyncResult, Exception)

    TearDown: OpenQA.Selenium.WebDriverException: Thrown a null loopback exception when sending an HTTP request to the remote WebDriver server for the url http: // localhost: 56154 / session / 431bd7d6e4f8d06693a521a631ccb032 / screenshot has become. The exception state was ConnectFailure and the message was: Unable to select remote server

    —-> System.Net.Sockets.SocketException: The connection could not be established because the user’s computer actively refused it 127.0.0.1:56154

    Stack trace
    at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError (responseResponse error)
    at OpenQA.Selenium.Remote.RemoteWebDriver.Execute (String driverCommandToExecute, Parameters) Dictionary 2 at OpenQA.Selenium.Remote.RemoteWebDriver.Mechanism, findelement (String value) at OpenQA.Selenium.Remotelement ) next to OpenQA.Selenium.By. <> C__DisplayClass19_0. b__0 (ISearchContext context) for OpenQA.Selenium.By.FindElement (ISearchContext context) for OpenQA.Selenium.Remote.Remote. Selenium.Support.PageObjects.DefaultElementLocator.LocateElement (IEnumerable 1 sec)
    at OpenQA.Selenium.Support.PageObjects.WebElementProxy.get_Element ()
    at OpenQA.Selenium.Support.PageObjects.WebElementProxy.Invoke (IMessage message)
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke (MessageData and msgData, type Int32)
    at OpenQA.Selenium.IWebElement.SendKeys (text string)
    at PwC.US.EC.Selenium.Tests.Pages.EC.EC_ProjectPlanPage.AssignTo (String username) at H: us-tax-tech3_work 5 s PwC.US.EC.Selenium PwC.US.EC. Selenium.Tests Pages EC EC_ProjectPlanPage.cs: line 550
    at PwC.US.EC.Selenium.Tests.Tests.HealthCheckTests.Verify_ProjectPlan_DeliverableAndTask () at H: us-tax-tech3_work 5 s PwC.US.EC.Selenium PwC.US.EC.Selenium.Tests Tests HealthCheckTests.cs: line 408
    – Demolition
    at OpenQA.Selenium.Remote.HttpCommandExecutor.MakeHttpRequest (HttpRequestInfo requestInfo)
    at OpenQA.Selenium.Remote.HttpCommandExecutor.Execute (commandToExecute command)
    at OpenQA.Selenium.Remote.DriverServiceCommandExecutor.Execute (commandToExecute command)
    at OpenQA.Selenium.Remote.RemoteWebDriver.Execute (String driverCommandToExecute, Parameters) Dictionary 2 at OpenQA.Selenium.Remote.RemoteWebDriver.GetScreenshot () using PwC.US.EC.Selenium.Tests.Report (Driver, screenShotName) at H: us-tax-tech3 _work 5 s PwC.US.EC.Selenium PwC.US.EC.Selenium.Tests Utils ReportUtils.cs: line 134 at PwC. US. EC.Selenium.Tests.ReportUtils.UpdateResult (TestContext context, IWebDriver driver) in H: us-tax-tech3 _work 5 s PwC.US.EC.Selenium PwC.US.EC.Selenium .Tests Utils ReportUtils.cs: line 97 in PwC.US.EC.Selenium.Tests.BaseTest 1.TearDown () in H: us-tax-tech3_work 5 s PwC.US.EC. Selenium PwC.US.EC.Selenium.Tests Tests BaseTest.cs: line 58
    –WebException
    at System.Net.HttpWebRequest.GetResponse ()
    at OpenQA.Selenium.Remote.HttpCommandExecutor.MakeHttpRequest (HttpRequestInfo requestInfo)
    –SocketException
    at System.Net.Sockets.Socket.DoConnect (EndPoint, endPointSnapshot, SocketAddress socketAddress)
    at System.Net.ServicePoint.ConnectSocketInternal (Boolean connectFailure, Socket s4, Socket Socket & s6, socket, IPAddress & Address, ConnectSocketState State, IAsyncResult asyncResult, Exception & Exception)
    Hooray! No test failure.

     

     

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