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# The RequestState Class

#### Experimental!

ProtoRPC is an experimental, innovative, and rapidly changing new feature for App Engine. Unfortunately, being on the bleeding edge means that we may make backwards-incompatible changes to ProtoRPC. We will inform the community when this feature is no longer experimental.

The RequestState class requests state information about a request via the following properties:

`remote_host`
  Remote host name where the request originated.
`remote_address`
  IP address where the request originated.
`server_host`
  Host of the server in which the service resides.
`server_port`
  Post from which the service has received the request.