googollee/go-socket.io — pull request #34 by Sean-Der (2014-09-02 03:20:51+00:00)
Title: Add *http.Request to Session struct allowing you to inspect the initial ajax request

This exists on the master branch with https://github.com/googollee/go-socket.io/blob/master/socket.go#L19, but I couldn't find a similar way to access this information on the 0.9.x branch