Merge pull request #4986 from garrettr/docs-4985-tor-browser-dev-env

Update instructions for current version of Tor Browser

docs/development/tips_and_tricks.rst

@@ -20,20 +20,20 @@ development. Unfortunately, it is not possible to access the local
 development servers by default, due to Tor Browser's proxy
 configuration.
 
-To test the development environment in Tor Browser, you need to add an
-exception to allow Tor Browser to access localhost:
+To test the development environment in Tor Browser, you need to modify Tor
+Browser's default settings to prevent localhost from being resolved by the
+proxy:
 
-#. Open the "Tor Browser" menu and click "Preferences..."
-#. Choose the "Advanced" section and the "Network" subtab under it
-#. In the "Connection" section, click "Settings..."
-#. In the text box labeled "No Proxy for:", enter ``127.0.0.1``
+#. In a new tab, navigate to ``about:config``.
+#. Click "I accept the Risk!"
+#. In the search bar, enter ``network.proxy.allow_hijacking_localhost``.
+#. The default value is true. Double-click to set it to false.
 
-   -  Note: for some reason, ``localhost`` doesn't work here.
+Now you should be able to navigate to ``127.0.0.1:8080`` and ``127.0.0.1:8081``
+in Tor Browser. For some reason, you have to use ``127.0.0.1`` -- ``localhost``
+doesn't work.
 
-#. Click "Ok" and close the Preferences window
-
-You should now be able to access the development server in the Tor
-Browser by navigating to ``127.0.0.1:8080`` and ``127.0.0.1:8081``.
+The modified value persists across restarts of Tor Browser.
 
 .. _updating_pip_dependencies: