I they were the same so I just Wiresharked Opera Mobile on my phone (with Turbo enabled) and it looks like you're right. My phone sends HTTP requests to something.opera-mini.net, then that server sends back compressed HTTP.

You must have a lot of Turbo/Mini proxy servers to handle all the clients. I guess it's against your TOS but I wonder how easy it would be to proxy another browser's traffic through Opera Turbo.

Is Opera Mini's format closed or is there a spec somewhere we can see?

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