Danny's right on all counts. I don't think there's Racket client support for multipart/form-data.
If you know you're communicating with your own server, you can also just send the file data as the post data (request-post-data/raw req) and the filename (if you need it) as a GET query arg. Jay On Mon, Oct 8, 2012 at 11:31 AM, Danny Yoo <d...@hashcollision.org> wrote: > On Mon, Oct 8, 2012 at 4:56 AM, Erich Rast <er...@snafu.de> wrote: >> Hi, >> >> I'm not very experienced with using the web server yet and am looking >> for advice and examples of how to download and upload files. I'm >> particularly interested in any example of uploading a file using a >> racket client (not a browser) to the web server, because it seems hard >> to understand this from just the docs alone. > > On the server side of things, I believe we can use bindings-assq on an > HTTP request's collection of name-value binding pairs. The value we > get back from bindings-assq can be a binding:file structure. > > Mirroring the example from > http://docs.racket-lang.org/web-server/http.html#(def._((lib._web-server/http/request-structs..rkt)._request-bindings/raw)), > an example that expects file input would look something like this: > > ;;;;;;;;;;;;;;;;;;;;;; > (require web-server/http) > > ;; print-file-content: request -> void > (define (print-file-content req) > (match (bindings-assq #"file" (request-bindings/raw req)) > [(struct binding:file (id filename headers content)) > (printf "I got a file with content: ~s\n" content)])) > ;;;;;;;;;;;;;;;;;;;;;; > > > On the client side of things, it looks like we want to send a > "multipart/form-data" encoding of the file's bytes over as the body of > a post-pure-port. > > The details on how to build this thing should already be handled by a > library... However, I'm a little disconcerted: I can't seem to find a > Racket library on PLaneT or the standard library that handles this > task. Basically, I'm looking for the counterpart of the net/uri-codec > functions, but for encoding to the mulitpart/form-data format. I must > be missing something? > ____________________ > Racket Users list: > http://lists.racket-lang.org/users -- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay "The glory of God is Intelligence" - D&C 93 ____________________ Racket Users list: http://lists.racket-lang.org/users
