[racket] Creating protocols

On Wed, Sep 8, 2010 at 8:25 AM, Mark Carter <mcturra2000 at yahoo.co.uk> wrote:
> Suppose I wanted to make a client/server application that communicates via a
> protocol which has to be designed for that application. A neat way of doing it
> would be for the client to send s-exprs to the server via TCP, which were then
> evaluated. This is a huge security risk, though, because naturally you don't
> want a malicious client injecting all sorts non-protocol commands to the
> evaluator, or maybe exploiting some quirk to do some damage. I don't know much
> about Tcl, but I hear that it has a bullet-proof customisable interpreter for
> just such a scenario. Is there an equivalent for DrRacket (ideally with some
> simple examples) to do this kind of thing?

http://docs.racket-lang.org/reference/Sandboxed_Evaluation.html?q=Sandboxed%20Evaluation