Host source settings are valid for proxy deployments only.
  1. Click Settings and then go to HTTP Requests > Host Source.
  2. To enter a header name to search for in the Header Names list, click Header Names.

    You can add a header by clicking + Header Names or delete a header by clicking the Delete icon.

  3. In the List Value field, to determine (when a list of values is in the header) if the first or last value in the list should be used as the Host Source value, select one of the following:
    • First
    • Last

    The default value is Last.

  4. Click Save.