Hi, I want to generate links, which will be sent via email to survey participants, that depend on the participant, and so that if the form has been submitted once, it cannot be resubmitted. Obviously
mysurvey.com/marc would work, if there is only one form for user marc, but is totally insecure. I could use SHA1-encoded identifiers, say if a user's identifier is 1234, encode it which gives encoded-1234, store both of those values in the database and when the server sees encoded-1234, return the form appropriate for user 1234. (They will be different, sometimes only on the submit button, but usually also the forms.) This also means that I can ensure that the link only works as long as the form hasn't yet been submitted. I am wondering whether there are some functions in the web server that would make the creation of such links easier, since when I went through the tutorial on blogs, it seemed like Racket created random-looking URLs with continuations already. Thanks, Marc -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
