If mabl fails to connect to your application when running a test, you may need to take additional steps.
Confirm network settings
Many connectivity issues arise from the fact that the test environment is protected by a firewall that blocks inbound traffic from the Internet. mabl test traffic originates from machines in the cloud.
To test against applications in firewalled environments using mabl, add mabl's IP addresses to an allowlist for inbound connections or use mabl Link.
Check Link Agent connectivity
If you are trying to run a plan or test using mabl Link, confirm the following settings:
Confirm the link agent is active
Go to Settings > Networking. The Agents table lists the Link Agents that are connected, with their status and the endpoints they use. An agent with a warning in the Endpoint column can't reach mabl.
Check the environment settings
Link agents are configured on the environment level. Take the following steps to confirm that an environment is associated with a link agent:
- Go to the applications page: Configuration > Environments
- Open the environment you are running tests in.
- Click on the edit pencil to open the "Edit environment" page.
- In the Advanced section, ensure that the "Use link agent" box is checked and an active link agent is selected.
To check whether a tunnel can reach your application, run the connection checks in Testing and diagnosing Link connections. For more help, see Troubleshooting issues with mabl Link.
Check with your network team
mabl identifies itself as a "bot" when it connects to your website. Many websites and applications block bot traffic by default. If your environment is accessible from the Internet but mabl fails to connect, you may need to add mabl traffic to an allowlist for bot blockers.
If you are unsure whether your site rejects "bot" traffic, check with your networking team or a developer who is more familiar with the application.
Reach out to the mabl team
If you've tried the above and still can't determine the cause of the failure, feel free to reach out in-app or by email to the mabl team whenever you have questions! We're always happy to help.