AppEngine Get HOST of incoming request

I have an API and would like to check that I only process requests from certain hosts, 开发者_JAVA技巧using self.request.host always brings back the current API host, not the requesting URL's host...any ideas?

Thanks

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The Request object has a property called remote_addr that should give you IP address of the origin of the request. See the docs.

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Do you mean referer?

self.request.headers.get("Referer")