What You'll Need

In order to follow along with the course, you will need a few things set up ahead of time:

This tutorial gives examples written in Java, using the JUnit4 test runner, as well as the Maven build tool. If you would like to follow along, you can download or fork and clone this project.

Skills and Knowledge

In this section, you will learn about using shared tunnels, and edit the code to run a test using the tunnel and this example test written in Java, JUnit4, with Maven and InteliiJ. This lesson covers:


Sauce Connect Shared Tunnels


Shared tunnels are tunnels that are started by one person in an organization, that can be used by other individuals within that organization. Though anyone can run the -s flag, tunnels are only shared with others if you are on the same Sauce Labs team, or Team Admin in your Sauce Labs account.

Sauce Labs Account Access

There are different roles that individuals in an organization can have within Sauce Labs. The most common ones include:

Org Admin

This is the highest level of access for a Sauce Labs Account. These users can:

Team Admins

Team Member

Sauce Labs Access

Start a Shared Tunnel

Starting a shared tunnel is as easy as adding a flag when you run your tunnel, like you did earlier. The basic steps include:

  1. Navigate to the folder where you have the Sauce Connect Software downloaded
  2. Start a tunnel with the command, adding the -s flag to the end:
bin/sc -u Lindsayw34 -k xxxxxxxxxx-xxxxxxx-xxxx -i Lindsayw34_tunnel_id -s

Start a shared tunnel

Now on the Sauce Labs dashboard, under the Tunnels tab, you can see a shared tunnel on your dashboard:

Start a shared tunnel

Tunnel Information

In order for other users in your organization to utilize your test, they will need two pieces of information, the Tunnel Name and Owner.

In this example, the tunnel name is walkerlj_tunnel_id and the owner is walkerlj.

Using a Shared Tunnel with a Java Test

Using a shared tunnel to run your test is done in a very similar way, you simply need to add an extra capabilities.

To use a shared tunnel create or copy this example test written in Java, JUnit4, with Maven and InteliiJ.

Update BaseTest.java

To run a test through this login to a user account that is different than the use who is running the test, and check the Tunnels dashboard to find the the Tunnel Name and Owner for the tunnel:

Start a shared tunnel

Now open your copy of the example test.

Navigate to the directory src/test/java and look in the tests directory to open BaseTest.java. Find the set of capabilities in the before() method for (host.equals("saucelabs")) {:

      protected void before() throws Exception {
          if (host.equals("saucelabs")) {
              MutableCapabilities sauceOptions = new MutableCapabilities();
              sauceOptions.setCapability("username", sauceUser);
              sauceOptions.setCapability("accessKey", sauceKey);
              sauceOptions.setCapability("name", testName);
              MutableCapabilities capabilities = new
              // add tunnel capabilities
              capabilities.setCapability("browserName", browserName);
              capabilities.setCapability("browserVersion", browserVersion);
              capabilities.setCapability("platformName", platformName);
              capabilities.setCapability("sauce:options", sauceOptions);
              String sauceUrl = String.format("https://ondemand.saucelabs.com/wd/hub");
              driver = new RemoteWebDriver(new URL(sauceUrl), capabilities);
              sessionId = ((RemoteWebDriver) driver).getSessionId().toString();
              sauceClient = new SauceREST(sauceUser, sauceKey, DataCenter.US);


At the bottom of the list of sauceOptions, underneath the sauceOptions.setCapability("name", testName) add in two more capabilities; tunnelIdentifier (for Tunnel Name) and parentTunnel (for Owner):

    sauceOptions.setCapability("tunnelIdentifier", "walkerlj_tunnel_id"     
    sauceOptions.setCapability("parentTunnel", "walkerlj");

Now you can run mvn clean test to run the test on Sauce Labs.

Final Code

Start a shared tunnel

In this section, you will learn about using tunnel pools. These are groups of persistent tunnels that are always available to an organization or team (they aren't stopped after a test).

This lesson covers:

Typically, instances of the high availability tunnel are created and spun up with the same name (on the same server or different servers) as a shared tunnel so users in an organization can access tunnels as needed without having to start their own.

To follow along, edit the code to run a test using this example test written in Java, JUnit4, with Maven and InteliiJ. (Copy the tests in /java_tests and run your tests from there).

Start Tunnel Pools

To start a tunnel pool and create a resilient system for your team to run tests in, simply start a test as you normally with a -s flag for a shared tunnel and --tunnel-pool with Sauce Connect 4.6.5 +, like so:

bin/sc -u your-username -k ******************** -i your_tunnel_id -s --tunnel-pool

Typically when you start a tunnel somewhere, you have tunnel that is running 24/7, however if you or someone in your organization were to start two tunnels with the same name on the same server, they would "collide" and stop running.

Start a Second Tunnel

Now, to illustrate how high-availability tunnels work, we will start another tunnel with the same name (in a new terminal window):

bin/sc -u your-username -k ******************** -i your_tunnel_id -s --tunnel-pool

Since you have more than one tunnel with the same name, when others in your organization use that tunnel, the traffic will be balanced across these tunnels, and if one tunnel goes down, you will still be able to run tests without having to change the tunnel name.

Start a shared tunnel

Adding Resiliency

There are two ways that your automated test runs may fail when using Sauce Connect, since they do not self-heal or restart automatically:

To protect against tunnel unavailability, you should start more than one tunnel, hosted on more than one server:

Start a shared tunnel

Restarting Tunnels

It's important to setup your tunnels to restart every 24 hours in order to improve resiliency. There are many services available to schedule a task such as stopping and restarting your Sauce Connect Tunnels. If you are using a Unix system (Mac or Linux) you can use a Cron daemon.

Persistent and On-Demand Tunnels

With Sauce Connect, you have the option to either start tunnels as they are needed, or On-Demand, or you can keep tunnels running at all time, as Persistent tunnels.


Typically, On-Demand tunnels are useful for quick or one-off tests, and are also an option to use if you are automating the creation of your app in CI.


In many situations having shared, high availability Persistent tunnels are an advantage.

You can have a team dedicated to monitoring these tunnels, getting logs when errors occur, and make sure you have a resilient setup for the tunnels you use, with more than one tunnel running on more than one server, and tunnels being restarted every 24 hours.

In the next lesson, you will see an example of how you can automate the restarting of those tunnels.

One way you can automatically restart a tunnel is to create bash scripts to start and stop a sauce connect tunnel, and run these automatically every day. In this lesson, you will learn to:

In order to kick off a script that will execute the starting and stopping of Sauce Labs tunnels, you can use the crontab command to create a file that will start the scripts.

Create Script Files

First, create two bash scripts on your computer, one named start.sh and the other called kill.sh. You can create these files with the touch command like so:

touch kill.sh
touch start.sh

Add Code to kill.sh

The kill.sh script will kill any existing tunnels you have running. In this script, update the tunnelname variable with the name you plan on using for your high-availability tunnels.

#Kill  tunnels with a -SIGINT hard kill.  Will cause jobs in tunnel to error.


echo "Killing $tunnelname processes"
for x in $(ps aux | grep "\s$tunnelname\s" | grep -v grep | awk '{ print $2 }' );
  kill -SIGINT $x
  echo "$tunnelname tunnel with PID $x was sent kill -SIGINT"

echo "all $tunnelname tunnels given the kill signal"

Add Code to start.sh

To restart the tunnel, create the start.sh script that will start a pool of tunnels. For the variables user= and key=, you will need to add you Sauce username and access key.

For tunnelname=, and sc-path= you will need to add the name you will use for your high availability tunnels, and the path to where you installed Sauce Connect (and the correct version) on your machine. You will also want to make sure sc_path= lists the latest version of Sauce Connect (also should be installed on your machine):

# Each tunnel pool gets 10 ports


for tunnel in $(seq 1 $tunnels);
    if [[ ! $(ps aux | grep sc_$tunnelname-$tunnel_port_num | grep -v grep | awk '{ print $2 }') ]]; then
        $sc_path -u $user -k $key --tunnel-name $tunnelname --tunnel-pool -d /tmp/sc_$tunnelname-$tunnel_port_num -s -v --extra-info '{"inject_job_id":true}' &
        sleep 5


Test our your scripts by running them on your machine. Start with the chmod command to give the permission these two bash scripts to execute on your machine:

Update Permissions To Run bash Scripts

When you create bash scripts, you need to let your system know what permission those script have in terms of changing files, directories, settings, and more. The chmod command allows you to set those permissions for each script.

For each of the scripts you created, set the permissions to read write, and execute as needed:

chmod 740 start.sh
chmod 740 kill.sh

Run Your Scripts

Before you rely on the cron tab to run your scripts, you will probably want to test them out. Navigate to the folder where you saved the scripts, then run the following command:

sudo bash ./start.sh

You should see three Sauce Connect tunnels start in your console and on the Tunnels page.

Start a shared tunnel

Once you have verification that your script is running, try out the kill command:

sudo bash ./kill.sh

You should see a verification on both your console and on the [Tunnels](https://app.saucelabs.com/tunnels page that the tunnels have been shut down.

Start a shared tunnel

Using Cron with Sauce Connect bash Scripts

Next Create a crontab file with the command crontab -e.

Use vim (vim crontab) to insert and save the timing for when you want to run your files, and the path to the bash script it will execute.

This will execute the start.bash script every hour, which will check if you have a tunnel up, and if not, start one:

0 * * * * /Users/yourusername/Documents/start.bash

This will execute the kill.bash script at 1:00 a.m. every day, then execute the start.bash script at 1:15 a.m. to start three new tunnels:

0 1 * * * /Users/yourusername/Documents/kill.bash
15 1 * * * /Users/yourusername/Documents/start.bash


Run Tests with High Availability Tunnels

Once you have several tunnels configured to restart on more than one machine, and have several tunnels up and running with the same tunnel id (name) you can run any of your tests the same way you would with any parent tunnel,

You have now set up resilient, secure testing infastructure with the Sauce Labs Cloud, which comes with the peace of mind that if a single tunnel or server fails, your tests will still run and you can deliver digital confidence.

In this module, we will explore how and when a Sauce Connect tunnel can be used with a Continuous Integration (CI) tool. CI tools are used to start automated tests, and can also be used to spin up (host) an instance of the application you are testing.

Test Scenarios

There are different ways you can configure the setup of your application (system) under test, your test suites, the Sauce Connect host, and the Sauce Labs Cloud of virtual machines. There are two main ways to do this.

With either of these situations, you can run your tests from wherever you would like: Your local machine, CI tool, the private network your app is hosted on, your kid's iPad, wherever your tests can reach the Sauce Labs Cloud.

SC Setups

The most important thing you need to understand is that the Sauce Connect proxy needs to be reachable or running in the same environment that your system under test is running (or reachable on same network).

In this module, you will work with an example setting up Sauce Connect in a CI environment, however, keep in mind that if your app is hosted on a private network, and you try to follow the example in this course, you app won't be able to connect through Sauce Connect.

SC Setup Can't Connect

In this lesson, you will be creating a repo in GitHub actions that includes a Selenium Java test and a workflow that can run a Sauce Connect tunnel in Github actions, and test against a demo app.

Though this app is publicly hosted and doesn't require a secure tunnel to be accessed, this tutorial will walk you through the steps to access test the app with GitHub Actions using a Sauce Connect tunnel as an example of what you would do to test a an app you would build in GitHub Actions, or of how you could setup CI on your private network.

What You'll Need

Learn more at the Github Actions Homepage.

Set Up Your Project

Create a Project for Your Action and Tests

First, you will need to create a repo where you will put your tests, build your app, and start a Sauce Connect tunnel.

You can fork and clone/download the demo repo if you want to follow along. Name your repo it whatever you wish.

Set up Github repo

We will set up our test to run on every push request made to the main branch of a repository.

Create GitHub Secrets

The first order of business is to export your Sauce Labs account credentials and store them as GitHub Secrets.

  1. Navigate to your project repository and select the settings icon.
  2. Select Secrets.
  3. Click the New secret button.
  4. Add the following:
    • Value: your-sauce-username
  5. Click Add secret to finish.
  6. Repeat the same steps above for your SAUCE_ACCESS_KEY, and make up a value for SAUCE_TUNNEL_NAME (Not sure where to find SAUCE_USERNAME and SAUCE_ACCESS_KEY in Sauce Labs? They're here).

Github Secrets

Create YAML File

In your project file (in this example we will test against a public demo web app), create a directory called .github, then within that, create a directory called workflows.

We will need to create a new .yml file like this example that is used to give instructions to Github Actions.

This file will define the test jobs that will run on certain triggers called events.

Create a new file called sc-actions-demo.yml:

The YML file

Set Up the Workflow Trigger and Secrets

In the sc-actions-demo.yml file, use vim to or an IDE to copy and paste in the following:

# This workflow will do a clean install of Java and Maven, start a Sauce Connect tunnel, then run a Java Test suite with that tunnel
name: Sample Java Test with Sauce Connect

      - main
      - diego-changes
  # ...

This first part of the code sets up your workflow to run when the main or diego-changes branch has a push to it, and the worflow_dispatch allows you to manually trigger a run within the UI.

Trigger workflow

See more about triggering workflows.

Next, we will add in Secrets to use. You want to make sure that you use the same tunnel name in both the test and your automated tests. In the sc-actions-demo.yml file add your secrets below the actions you set to trigger:

      - main
      - diego-changes


This will pull the secrets you set up for this project or environment. Note how in the Config.java file, you have the same variables set for your sauce username, access key, and tunnel name:

// filename: tests/Config.java
package tests;

public class Config {
    public static final String baseUrl = System.getProperty("baseUrl", "http://the-internet.herokuapp.com");
    public static final String host = System.getProperty("host", "saucelabs");
    public static final String browserName = System.getProperty("browserName", "chrome");
    public static final String browserVersion = System.getProperty("browserVersion", "75.0");
    public static final String platformName = System.getProperty("platformName", "Windows 10");
    public static final String sauceUser = System.getenv("SAUCE_USERNAME");
    public static final String sauceKey = System.getenv("SAUCE_ACCESS_KEY");
    public static final String sauceTunnel = System.getenv("SAUCE_TUNNEL_NAME");


Create Jobs in Github Actions

Now we will define the job(s) you will use to start a Sauce Connect Tunnel, Build your app, and setup the environment for your tests and run them.


This is a bad example of how Sauce Connect tunnels should be used, since this will actually test against a public app in another environment, but will give an example of starting a tunnel in GitHub actions where you can build your app.

Add the job to set up Sauce Connect, and below it is a good place to add the code to build your app:

    runs-on: ubuntu-latest
      - uses: actions/checkout@v2

      - name: Sauce Connect Action
        uses: saucelabs/sauce-connect-action@v1
          username: ${{ secrets.SAUCE_USERNAME }}
          accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
          tunnelIdentifier: ${{ secrets.SAUCE_TUNNEL_NAME }}
          scVersion: 4.6.4

      #- name: Build Your App
          # Add code here to build your app

Note that you will want to update the scVersion: with the most up to date version that you plan to use.

Last, add in the code to build your app, and setup and run the example test suite:

#- name: Build Your App
    # Add code here to build your app

- name: Set up JDK 1.8
  uses: actions/setup-java@v1
    java-version: 1.8
- name: Run tests
  continue-on-error: true
  run: cd java_tests && mvn test

Note how the last command to actually run: your tests first changes directory to the java/tests folder, then runs the test with Maven, which should already exist on the virtual machine/ container where your app, test, and Sauce Connect tunnel are being hosted.

Now, when you push a change, you should see a successful workflow run under the Actions.

Actions Workflow



Sauce Connect logs are hard, and we have experts to help you. Visit support.saucelabs.com to get help with your Sauce Connect issues. Having log files ready will help speed up the process.

Install Using cURL

To Install Sauce Connect on Linux, and add sc to your system PATH, use the commands:

cd ~/
curl -LO https://saucelabs.com/downloads/sc-4.6.5-linux.tar.gz
tar xvf ./sc-4.6.5-linux.tar.gz
cp ./sc-4.6.5-linux/bin/sc ~/bin/sc
cp ./sc-4.6.5-linux/bin/sc ~/bin/sc