Elaborating the arguments to Http.request for CORS support

[rehno-lindeque]

With the ongoing work on Http, I'd like to bravely throw in a feature request for CORS support :)

The protocol for CORS is actually somewhat involved, particularly since it involves a preflight OPTIONS request which I believe needs to be resent after a timeout period. I think this is usually invisible to the user of most API's, it seems as though things can get tricky.

Using AngularJS's $httpProvider and Restangular, this looks like the following:

  $httpProvider.defaults.useXDomain = true
  Restangular.setDefaultHttpFields {withCredentials: true}
  Restangular.setDefaultHeaders {"Content-Type": "application/json"} # X-Requested-With header can't be used with CORS

While non-CORS restangular requests simply look like

  Restangular.setDefaultHeaders 
  { "Content-Type": "application/json",
  , "X-Requested-With": "XMLHttpRequest"
  }

---

I think swapping the argument to request in the new API might also be handy.

request : String -> String -> String -> List (String, String) -> Request String

Since request is an elaborated version of get/put/post/delete it seems as though the primary use case is going to be adjusting the headers...
For example, for a regular ajax request, get might look like

get = Http.request
    [ "Content-Type": "application/json",
    , "X-Requested-With": "XMLHttpRequest"
    ]
    "GET"

while a CORS ajax request looks somewhat different

corsGet = Http.request
    [ "Content-Type": "application/json",
    , -- ... ?
    ]
    "GET" -- "OPTIONS" ?

[roobie]

Has there been no update on this issue? I am asking because I am facing similar challenges. Maybe I'm just missing something, and if so, please tell.

[roobie]

Has there been no update on this issue? I am asking because I am facing similar challenges. Maybe I'm just missing something, and if so, please tell.

[jvoigtlaender]

Does http://package.elm-lang.org/packages/lukewestby/elm-http-extra/latest/ address your issues?

[jvoigtlaender]

Does http://package.elm-lang.org/packages/lukewestby/elm-http-extra/latest/ address your issues?

[evancz]

Not sure if evancz/elm-http or others solve this, but it's no longer a core thing.

[evancz]

Not sure if evancz/elm-http or others solve this, but it's no longer a core thing.