Proxy is not enabled for Internet Explorer when ie.usePerProcessProxy is true

[beluha]

Meta -

OS: Windows 7, Windows 10

Selenium Version: 3.x (had a chance to reproduce in 3.7.1, 3.11)

Browser: Internet Explorer

Browser Version: 11.0.9600.18952CO, 11.966.15063.0CO

Expected Behavior -

For enabled ie.usePerProcessProxy the proxy is used for current IE browser process

Actual Behavior -

Proxy is ignored and is not used by current IE browser proxy at all when ie.usePerProcessProxy is true.

Steps to reproduce -

There is simple java code using BrowserMobProxyServer

import org.openqa.selenium.PageLoadStrategy;
import org.openqa.selenium.Proxy;
import org.openqa.selenium.UnexpectedAlertBehaviour;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.ie.InternetExplorerDriver;
import org.openqa.selenium.ie.InternetExplorerOptions;
import org.openqa.selenium.internal.ElementScrollBehavior;

import net.lightbody.bmp.BrowserMobProxy;
import net.lightbody.bmp.BrowserMobProxyServer;
import net.lightbody.bmp.client.ClientUtil;

public class IeProxy {
    private static BrowserMobProxy proxyServer = new BrowserMobProxyServer();

    public static void main(String[] args) throws InterruptedException {
        Proxy proxy = getProxy();
        InternetExplorerOptions internetExplorerOptions = new InternetExplorerOptions();
        internetExplorerOptions
            .setProxy(proxy)
            .requireWindowFocus().usePerProcessProxy().enableNativeEvents()
            .introduceFlakinessByIgnoringSecurityDomains().ignoreZoomSettings()
            .setUnhandledPromptBehaviour(UnexpectedAlertBehaviour.ACCEPT)
            .enablePersistentHovering().setPageLoadStrategy(PageLoadStrategy.EAGER)
            .elementScrollTo(ElementScrollBehavior.TOP).setCapability(InternetExplorerDriver.SILENT, true);

        WebDriver driver = new InternetExplorerDriver(internetExplorerOptions);
        driver.get("http://google.com");

        Thread.sleep(5000);

        // stopping driver and proxy
        driver.close();
        driver.quit();
        proxyServer.abort();
    }

    private static Proxy getProxy() {
        proxyServer.setTrustAllServers(true);
        proxyServer.start();

        return ClientUtil.createSeleniumProxy(proxyServer);
    }
}

If do not call usePerProcessProxy() then it means we use system proxy. And on the loaded page we will see expected behavior

If to call usePerProcessProxy() then proxy is ignored at all. And unexpected and actual behavior for the loaded page is

So for usePerProcessProxy() we expect to see

for the driver.get("http://google.com");

Maven dependencies:

        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>3.11.0</version>
        </dependency>        
        <dependency>
            <groupId>net.lightbody.bmp</groupId>
            <artifactId>browsermob-core</artifactId>
            <version>2.1.5</version>
        </dependency>

Related issues:
SeleniumHQ/selenium-google-code-issue-archive#8257

[jimevans]

Can you provide a trace-level log from IEDriverServer.exe?

[beluha]

Windows 7
ie.log
Attached.
Internet Explorer is in Program files.
My OS is 64-bit.
Screen from task manager for opened IE

Even at enabled "enhanced protected mode" selenium starts IE 32-bit.
With 32-bit IEDriverServer.exe this setting works fine and has expected behavior.

[beluha]

Windows 10
ie.log
OS 64 bit.
Even at enabled "enhanced protected mode" selenium starts IE 32-bit.

[jimevans]

As I suspected, using the 32-bit driver works. You should almost certainly be using the 32-bit driver anyway, even on 64-bit Windows. The logs you collected even call this out:

W 2018-03-27 14:53:17:699 c:\projects\webdriver\cpp\iedriver\proxymanager.cpp(255) Proxy will not be set! There is a mismatch in the bitness between the driver and browser. In particular, be sure you are not attempting to use a 64-bit IEDriverServer.exe against IE 10 or 11, even on 64-bit Windows.