Administration Guide › SPS APIs › Filter API Overview › How SPS Processes Custom Filters

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Associate Custom Filters to Proxy Rules

How SPS Processes Custom Filters

The SPS includes an API for inserting pre-processing and post-processing into the proxy stage of a request.

In a standard SPS transaction, the following process occurs:

  1. User requests a resource.
  2. SPS examines its proxy rules and determines where to direct the request (after successful authentication and authorization).
  3. Destination server sends the requested resource to the SPS, which passes the resource to the user.

The Filter API provides a method for developers to insert processing before a request is passed to a destination server, as described in step 2 of the preceding process, or after the response from the destination server is returned to the SPS as described in step 3 of the preceding process, but before the resource is passed to the user.