BrowserMob Proxy Integration with Selenium

BrowserMob proxy allows you to manipulate HTTP requests and responses, capture HTTP content, and export performance data as a HAR file.

Add below maven dependency to your pom.xml in the project.

<dependency>
        <groupId>net.lightbody.bmp</groupId>
        <artifactId>browsermob-core</artifactId>
        <version>2.1.5</version>
 </dependency>

Start a browermob server.

public BrowserMobProxyServer proxy;

    public BrowserMobProxyServer getProxyServer() {
        proxy = new BrowserMobProxyServer();
        proxy.setTrustAllServers(true);
        // above line is needed for application with invalid certificates
        proxy.start();
        return proxy;
    }

Stop a browermob server.
    public void stopProxyServer() {
        if (proxy != null) {
        proxy.stop();
        }
    }

Set browsermob proxy with selenium proxy object.

public Proxy getSeleniumProxy() throws MyException {
        getProxyServer();
        // get the Selenium proxy object - org.openqa.selenium.Proxy;
        Proxy seleniumProxy = ClientUtil.createSeleniumProxy(proxy);
        try {
            String hostIp = Inet4Address.getLocalHost().getHostAddress();
            seleniumProxy.setHttpProxy(hostIp + ":" + proxy.getPort());
            seleniumProxy.setSslProxy(hostIp + ":" + proxy.getPort());
        } catch (Exception e) {
            throw new MyException(e.getMessage());
        }
        return seleniumProxy;
    }

Set proxy object with Chrome Options.

public ChromeOptions proxyChromeOptions() throws MyException {
        ChromeOptions chromeOptions = new ChromeOptions();
        try {
            // set proxy object with chromeoption
            chromeOptions.setProxy(getSeleniumProxy());
        } catch (Exception e) {
            throw new MyException(e.getMessage());
        }
        return chromeOptions;
    }

Set proxy object with Firefox Options.

public FirefoxOptions proxyFirefoxOptions() throws MyException {
        FirefoxOptions firefoxOptions = new FirefoxOptions();
        try {
            // set proxy object with Firefox option
            firefoxOptions.setProxy(getSeleniumProxy());
        } catch (Exception e) {
            throw new MyException(e.getMessage());
        }
        return firefoxOptions;
    }

Set proxy object with Edge Options.

public EdgeOptions proxyEdgeOptions() throws MyException {
        EdgeOptions edgeOptions = new EdgeOptions();
        try {
            // set proxy object with chromeoption
            edgeOptions.setProxy(getSeleniumProxy());
        } catch (Exception e) {
            throw new MyException(e.getMessage());
        }
        return edgeOptions;
    }

Enable har logs.

public void enableHar(String harLogName) {
        proxy.enableHarCaptureTypes(CaptureType.REQUEST_CONTENT, CaptureType.RESPONSE_CONTENT);
        // create a new HAR with the label (EX:APP Testing)
        proxy.newHar(harLogName);
    }

Write har details in har file.

public void getHarData(String filePath) throws MyException {
        try {
            // get the HAR data
            Har har = proxy.getHar();
            // Write HAR Data in a File (C:\\networklog.har)
            File harFile = new File(filePath);
            har.writeTo(harFile);
        } catch (Exception e) {
            throw new MyException(e.getMessage());
        }
    } 

What is HAR -HTTP Archive format or HAR is a JSON-formatted archive file format for logging of a web browser's interaction with a web application.

To view the HAR file download the HTTP Archive Viewer chrome addon.