Pass BrowserMob Proxy to Sauce Labs - "The proxy server is refusing connections" Error

Question

I have been trying to pass BrowserMob proxy to Sauce Labs with no luck.

Here's what I have tried:

• Start proxy server

  sh browsermob-proxy -port 9090
  

• Start proxy

  curl -X POST http://localhost:9090/proxy
  {"port":9091} 
  

• Start sauce connect, and pass proxy server information

  java -jar Sauce-Connect.jar myname xxxxxx -p localhost:9091
  

• Run Java Client

  ProxyServer proxyServer = new ProxyServer(9091);
  proxyServer.start();    
  
  Proxy proxy = proxyServer.seleniumProxy();
  DesiredCapabilities capabillities = DesiredCapabilities.firefox();
  capabillities.setCapability(CapabilityType.PROXY, proxy);
  capabillities.setCapability("version", "5");
  capabillities.setCapability("platform", Platform.XP);
  this.driver = new RemoteWebDriver(
          new URL("http://myname:xxxxxx@ondemand.saucelabs.com:80/wd/hub"),
          capabillities);
  

The following post provides a general guide line regarding how to make it work, but I keep getting "The proxy server is refusing connections" error.

Answer 1

I figured out the answer.

• Start Sauce Connect, and pass proxy server information

  java -jar Sauce-Connect.jar myname xxxxxx -p localhost:9091
  

  Running the above command will pass all requests to localhost 9091 port, and you may use netcat to confirm.

  nc -l 9091
  

• Run Java Client

  ProxyServer proxyServer = new ProxyServer(9091);
  proxyServer.start();    
  
  Proxy proxy = proxyServer.seleniumProxy();
  DesiredCapabilities capabilities = DesiredCapabilities.firefox();
  // DO NOT set proxy for RemoteWebDriver
  // capabilities.setCapability(CapabilityType.PROXY, proxy);
  capabilities.setCapability("version", "5");
  capabilities.setCapability("platform", Platform.XP);
  this.driver = new RemoteWebDriver(
          new URL("http://myname:xxxxxx@ondemand.saucelabs.com:80/wd/hub"),
          capabillities);
  

  The Java Client should starts a proxy at Port 9091. Unlike using FirefoxDriver directly, proxy should not be set in capabilities.

Answer 2

I could be wrong, but try a different port (like 9090). SauceConnect only proxies some ports for localhost as per the docs