Modifying traffic with rules

Rules are starting point to apply any kind of traffic manipulation. From transport level (such as spoofing IP, adding client cert) to regular application level (such as adding a header, changing a payload), rules are the way to go.

Rules are a combination of a filter and multiple actions. When a request or a response matches the filter, the actions are applied.

You can have as many rules as you want. They are applied in the order they are created when they share the same scope. The first rule that matches the request or response will be applied.

The search engine page contains an exhaustive list of all available actions and filters.

• Open the rule dialog box, either by

  • Settings menu > manage filters
  • Status bar > active rule
  • Ctrl+T or Cmd+T to access the search everywhere tool, then type Manage rules

• In either way, you will landing in the following dialog box

• Click on Add a new rule button

• For this sample, search for add response header and select it (all available rules can be found here)

• Fill the form with the following values

  • Header name : X-Fluxzy-Test
  • Header value : Hello world

• Click on the dropdown Apply to and select a filter. For this sample, select Any requests

• Save the filter

Now any request will have a X-Fluxzy-Test header with value Hello world added to the response.

You can import directly raw YAML configuration into Fluxzy Desktop. This is done again with the rule box dialog.

• Open the rule dialog box, either by

  • Settings menu > manage filters
  • Status bar > active rule
  • Ctrl+T or Cmd+T to access the search everywhere tool, then type Manage rules

• Click on Import

• A dialog box will be shown asking you to paste the YAML configuration.

• Alternatively, you can also import a file containing the YAML configuration.