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Add request header with a static value

Create a request header transform rule to add an X-Source HTTP header to the request with a static value (Cloudflare).

The following request header transform rule adds a header named X-Source with a static value (Cloudflare) to the HTTP request:

Text in Expression Editor:

starts_with(http.request.uri.path, "/en/")

Selected operation under Modify request header: Set static

Header name: X-Source

Value: Cloudflare