How To Set Proxy Settings In Selenium WebDriver Test

How To Set Proxy Settings In Selenium WebDriver Test
Sometimes, You need to set proxy settings of browser to run your selenium webdriver test.
 As you know, selenium launch fresh browser every time you run test so default proxy setting
will be No Proxy. You can set It In two ways.
1. Creating firefox profile and then use that profile In selenium test.
2. Using DesiredCapabilities. We will use DesiredCapabilities of selenium to set proxy.
What is DesiredCapabilities?
Using DesiredCapabilities, we can set and configure webdriver browser driver Instance
settings before launching It. Simplest example Is -> I wants to set proxy settings for
my webdriver browser Instance. I can do It using DesiredCapabilities.

How to set proxy settings of browser using DesiredCapabilities
I have created simple example to set proxy settings for firefox browser. It will set firefox driver
 browser Instance proxy settings as bellow.

HTTP Proxy = localhost, Port = 8080
SSL Proxy = localhost, Port = 8080
FTP Proxy = localhost, Port = 8080
SOCKS Host = localhost, Port = 8080

Example to set proxy for firefox driver Instance.
package Testing_Pack;

import java.io.IOException;
import org.openqa.selenium.Proxy;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

public class ProxySettings {

 WebDriver driver;

 @BeforeTest
 public void setUpDriver() {
  //Set proxy IP and port. Here localhost Is proxy IP and 8080 Is Port number.
  //You can change both values as per your requirement.
  String PROXY = "localhost:8080";
  //Bellow given syntaxes will set browser proxy settings using DesiredCapabilities.
  Proxy proxy = new Proxy();
  proxy.setHttpProxy(PROXY).setFtpProxy(PROXY).setSslProxy(PROXY)
    .setSocksProxy(PROXY);
  DesiredCapabilities cap = new DesiredCapabilities();
  cap.setCapability(CapabilityType.PROXY, proxy);
  //Use Capabilities when launch browser driver Instance.
  driver = new FirefoxDriver(cap);
 }

 @Test
 public void start() throws IOException {
  System.out.println("Check your webdriver driver Instance's proxy setttings.");
 }
}

Run above example In your eclipse. It will open firefox browser driver Instance.
Check proxy settings for It from browser menu Tools -> Options -> Advanced tab -> Network tab -> Settings button. Click on Settings button. It will open connection settings popup as bellow.

You can see that proxy settings are set as given In test DesiredCapabilities configuration.

 You can change proxy IP and port number as per your requirement.