The modify-request javascript is executed by GlimmerBlocker before GlimmerBlocker contacts the web-server.

In the request script, you can:

  1. Send back a text or html page that the script generates.
  2. Send back a redirect response.
  3. Change the dns server used when GlimmerBlocker resolves the the web-servers ip-address.
  4. Change the http/socks proxy used for this request.

In case 1 and 2 the web-server is not contacted as the script short-circuits the request handling.

  1. The request/response flow, especially the Modifying Requests section.
  2. The object reference
  3. Proxies