Getting selenium error – disconnected: received Inspector.detached event using chrome driver version 2.20.x

Few things you can check:

1. Obvious ones: Is the button visible when you click it? Is the element locator correct?

2. Is there any other element on the page with the same xpath? It may be possible that an element with same xpath is located on some background page/ or is part of some hidden widget. As a result, findElement() is actually pointing to the hidden button.

3. Have you tried giving an unique id to the button itself? That will help you to locate the button uniquely.

This could be because there are links in you website with hre that looks like #, resources/123.img which are not complete URLS and triggering a get would result in the exception. You should put a check to ensure the urls are valid. This can be donw by using a comparison using link.startsWith("http://") || link.startsWith("https://")

There are other places also in which you test would fail.

1. finalList is declared as a List and returned. This ,must be changed to List and should be populated with the link valued. This is because we you have a for loop in which you are calling driver.get(newLink) which would reset all the WebElement objects in the finalList since they are found earlier and give an exception.

2. img tags do not have href. Instead use 'src'.

Here is the code after all those changes. Please be aware that there could be other conditions to check whether the URL is valid or not which I have not listed here.

    public static List<String> findAllLinks(WebDriver driver) {

        // Declare finalList as string.
        List<String> finalList = new ArrayList<>();

        // Get the a tags
        List<WebElement> elementList = driver.findElements(By.tagName("a"));
        // get the img tags
        elementList.addAll(driver.findElements(By.tagName("img")));

        for (WebElement element : elementList) {
            // a tags have "href", img tags have src
            String link = element.getTagName().equalsIgnoreCase("a") ? element.getAttribute("href")
                    : element.getAttribute("src");
            // Check if link is not null and whether is a valid link by checking
            // starts with http or https
            if (link != null && (link.startsWith("http://") || link.startsWith("https://"))) {
                finalList.add(link);
            }
        }
        return finalList;
    }

    public static void main(String[] args) throws Exception {
        System.setProperty("webdriver.gecko.driver",
                "E:\\Softwares\\gecko\\geckodriver-v0.16.1-win64\\geckodriver.exe");
        System.setProperty("webdriver.chrome.driver", "E:\\chromedriver.exe");

        WebDriver driver = new ChromeDriver();
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        driver.get("http://testsite.com");
        List<String> allLinks = findAllLinks(driver);

        System.out.println("Total number of elements found " + allLinks.size());
        driver = new ChromeDriver();
        URI uri = null;
        for (String link : allLinks) {
            if (!driver.getCurrentUrl().equals(link)) {
                driver.manage().deleteAllCookies();
                driver.get(link);

                Thread.sleep(500);

                System.out.println(link);
                uri = new URI(driver.getCurrentUrl());
                try {
                    if (uri.getHost().equalsIgnoreCase("SpecificDomain.net")) {
                        System.out.println("Redirected URL-->> " + link);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }