Use a script to modify the HTTP response. The value field is a regular expression to match the request URLs.

The incoming parameters are $request and $response:

  • $request.url<String>: Request URL.
  • $request.method<String>:Request HTTP method.
  • $<String>: A unique ID for continuity among scripts.
  • $request.headers<Object>:Request HTTP headers.
  • $response.status<Number>: Response HTTP status code.
  • $response.headers<Object>: Response HTTP headers.
  • $response.body<String or Uint8Array>: Response HTTP body, decoded to string with UTF-8 if binary-mode isn't set. Only exists when requires-body = true.

The script must invoke $done() with an object. The object may contain:

  • body<String or Uint8Array>: Use the new body to overwrite the old one. Only works when requires-body = true.
  • headers<Object>: Use the new headers to overwrite all the old headers. Please note that some fields may not be modified, such as 'Content-Length'.
  • status<Number>: Use the new status code to overwrite the old one.

You may use $done(); to abort the request without returning anything. Or use $done({}); to keep the response untouched.

A simple example:

let headers = $response.headers;
headers['X-Modified-By'] = 'Surge';


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