SocketException caught in Selenium HtmlUnitDriver program

Question

I have written a small script that takes the default IP address for Epson printers we receive at my company and changes them automatically according to the requirement. This is done using Selenium HtmlUnitDriver.

The script gets the page, inserts the new IP, and than submits it. Because the IP changes once we submit a second time, the page is no longer 192.168.192.168, and the script does not want to complete.

Below is the script:

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.htmlunit.HtmlUnitDriver;

public class Main {
    public static void main(String[] args) {

        // Creating a new instance of the HTML unit driver.
        WebDriver driver = new HtmlUnitDriver();
        driver.get("http://192.168.192.168/ctcpip.htm");

        // Find and change the IP Address field.
        WebElement element = driver.findElement(By.name("IpAddress"));
        element.clear();
        element.sendKeys("192.168.192.169");
        element.submit();

        // Reset the printer. This changes it's IP as well, causing the initial driver page to no longer exist.
        WebElement reset = driver.findElement(By.name("Submit"));
        reset.submit();

        // The script never gets this far.
        driver.quit();

    }
}

The script times out before it can complete. When the reset element is clicked, the initial URL of http://192.168.192.168/ctcpip.htm is effectively nonexistent, since we have changed it to 192.169.192.169. This is expected behavior, and the entire point of the program.

The console reads:

Nov 03, 2016 10:36:52 AM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://192.168.192.168:80: Operation timed out
Nov 03, 2016 10:36:52 AM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://192.168.192.168:80
Exception in thread "main" java.lang.RuntimeException: org.apache.http.conn.HttpHostConnectException: Connect to 192.168.192.168:80 [/192.168.192.168] failed: Operation timed out
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.doProcessPostponedActions(JavaScriptEngine.java:739)
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.processPostponedActions(JavaScriptEngine.java:820)
    at com.gargoylesoftware.htmlunit.html.HtmlElement.click(HtmlElement.java:1325)
    at com.gargoylesoftware.htmlunit.html.HtmlElement.click(HtmlElement.java:1268)
    at com.gargoylesoftware.htmlunit.html.HtmlElement.click(HtmlElement.java:1216)
    at org.openqa.selenium.htmlunit.HtmlUnitWebElement.submit(HtmlUnitWebElement.java:175)
    at Main.main(Main.java:19)
    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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 192.168.192.168:80 [/192.168.192.168] failed: Operation timed out
    at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:140)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:318)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
    at com.gargoylesoftware.htmlunit.HttpWebConnection.getResponse(HttpWebConnection.java:178)
    at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseFromWebConnection(WebClient.java:1313)
    at com.gargoylesoftware.htmlunit.WebClient.loadWebResponse(WebClient.java:1230)
    at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:338)
    at com.gargoylesoftware.htmlunit.WaitingRefreshHandler.handleRefresh(WaitingRefreshHandler.java:92)
    at com.gargoylesoftware.htmlunit.html.HtmlPage.executeRefreshIfNeeded(HtmlPage.java:1446)
    at com.gargoylesoftware.htmlunit.html.HtmlPage.initialize(HtmlPage.java:306)
    at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:475)
    at com.gargoylesoftware.htmlunit.WebClient.loadDownloadedResponses(WebClient.java:2074)
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.doProcessPostponedActions(JavaScriptEngine.java:733)
    ... 11 more
Caused by: java.net.ConnectException: Operation timed out
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:72)
    at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:123)
    ... 29 more

Process finished with exit code 1

How do I tell my driver instance that it's totally cool the page changed so the process can exit properly?

The script needs to reach the driver.quit(); line.

Answer 1

Have you tried to call

driver.quit();

before

reset.submit();

? You no longer use the driver to retrieve any element, so you can quit before submitting the page.

I hope it helps.

Answer 2

If something doesn't work with findelement in Selenium, everyone uses js :). How about this ?

 driver.executeScript("window.document.getElementsByName("Submit")[0].click()");

Index could be wrong and need to be adjusted