java selenium proxy saucelabs browsermob

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

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.

Solution

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.