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title, intro, versions, type, topics, shortTitle, redirect_from
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| Troubleshooting port forwarding for GitHub Codespaces | Troubleshooting steps for common port forwarding issues. |
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reference |
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Port forwarding |
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When an application running inside a codespace outputs a port to the console, {% data variables.product.prodname_github_codespaces %} detects the localhost URL pattern and automatically forwards the port. For more information, see AUTOTITLE.
If a port is not automatically forwarded, you can forward it manually. For more information, see AUTOTITLE.
If port forwarding is set up, check the following:
- Use the link in the notification "toast" message, that pops up in the bottom right corner of {% data variables.product.prodname_vscode_shortname %}, or click the URL in Terminal, to open the forwarded port. Typing in
localhost:8000(as an example) to your local machine will not work if you're connected to the codespace via the browser. - Make sure to check that your application is still running from within your codespace. If your codespace has stopped after a period of inactivity, you'll need to ensure to restart your application once the codespace has restarted.
Typically, you can make a forwarded port accessible publicly, or within the organization that owns a repository. For more information, see AUTOTITLE. If either, or both, of the options for public or organization visibility are not available, this indicates that an organization-level policy has been configured. For more information, see AUTOTITLE.
{% data reusables.codespaces.forwarded-ports-environment-variable %}