Hi, pleasure to be of use. I got confused: did client part omit headers from POST request? Where did you get the message "No 'Access-Control-Allow-Origin' header is present on the requested resource." from? The problem may be some caveats of using Access-Control-Allow-Origin. See http://www.webdavsystem.com/ajax/programming/cross_origin_requests, specifically the first Important! box.
On 16 August 2015 at 10:07, Austin Guest <[email protected]> wrote: > Great implementation `yar...`! > > Question: I borrowed this code in my own implementation but ran into an > odd problem where it worked just fine on the preflight `OPTIONS` request, > but then omitted the CORS headers from the subsequent `POST` that was > getting preflighted, causing the request to be rejected with a 400 Error. > ("No 'Access-Control-Allow-Origin' header is present on the requested > resource.' etc...) > > Here's my version of your impl: > > https://github.com/the-learning-collective/whereat-server/blob/dev/src/main/scala/routes/CorsSupport.scala > > And here's me using it: > > https://github.com/the-learning-collective/whereat-server/blob/master/src/main/scala/routes/Routes.scala#L24 > > Any idea why I'm getting this error? > > I'm using superagent <https://visionmedia.github.io/superagent/> on the > client side (which someone had this CORS-related issue > <https://github.com/visionmedia/superagent/issues/501> with, but I think > that's a red-herring, since I very much want/need my `content-type` to be > `application/json`, unlike this user and the proposed solution he winds up > being offered.) > > > > On Thursday, June 18, 2015 at 12:23:50 PM UTC-4, [email protected] wrote: >> >> Hi, >> >> I didn't find a counterpart of mapRequestContext in akka-http, so I just >> allow all the methods I have in my route. Here is my shot at CORS in >> akka-http: >> >> import akka.http.scaladsl.model.HttpMethods._ >> import akka.http.scaladsl.model.HttpResponse >> import akka.http.scaladsl.model.headers._ >> import akka.http.scaladsl.server.Directives._ >> import akka.http.scaladsl.server.{AuthenticationFailedRejection, Directive0, >> RejectionHandler, Route} >> import com.typesafe.config.ConfigFactory >> >> trait CorsSupport { >> lazy val allowedOrigin = { >> val config = ConfigFactory.load() >> val sAllowedOrigin = config.getString("cors.allowed-origin") >> HttpOrigin(sAllowedOrigin) >> } >> >> //this directive adds access control headers to normal responses >> private def addAccessControlHeaders: Directive0 = { >> mapResponseHeaders { headers => >> `Access-Control-Allow-Origin`(allowedOrigin) +: >> `Access-Control-Allow-Credentials`(true) +: >> `Access-Control-Allow-Headers`("Authorization", "Content-Type", >> "X-Requested-With") +: >> headers >> } >> } >> >> //this handles preflight OPTIONS requests. TODO: see if can be done with >> rejection handler, >> //otherwise has to be under addAccessControlHeaders >> private def preflightRequestHandler: Route = options { >> complete(HttpResponse(200).withHeaders( >> `Access-Control-Allow-Methods`(OPTIONS, POST, PUT, GET, DELETE) >> ) >> ) >> } >> >> def corsHandler(r: Route) = addAccessControlHeaders { >> preflightRequestHandler ~ r >> } >> } >> >> >> you may notice I take allowed origin from the config file option >> "cors.allowed-origin". I mix this trait into my class which contains a >> route I want to handle CORS and wrap the route into corsHandler like so: >> >> corsHandler { >> path("") { ... } >> >> } >> >> >> >> On Tuesday, March 10, 2015 at 4:14:53 PM UTC+2, Ganta Murali Krishna >> wrote: >>> >>> Hello, >>> >>> I am currently experimenting with Akka-http on one of our modules. *Below >>> (or attached) is my current CORS file for spray*. I am struggling with >>> conversion, for e.g.: I cant find alternative to mapRequestContext. Can >>> any help me to rewrite/convert this please. So I can use this with >>> akka-http. Any help is appreciated. >>> >>> Regards >>> Murali >>> >>> import spray.http.{HttpMethods, HttpMethod, HttpResponse, AllOrigins} >>> import spray.http.HttpHeaders._ >>> import spray.http.HttpMethods._ >>> import spray.routing._ >>> >>> trait CORSSupport { >>> this: HttpService => >>> private val allowOriginHeader = `Access-Control-Allow-Origin`(AllOrigins) >>> private val optionsCorsHeaders = List( >>> `Access-Control-Allow-Headers`("Origin, >>> X-Requested-With,Authorization,Content-Type, Accept, Accept-Encoding, >>> Accept-Language, Host, Referer, User-Agent,apiKey"), >>> `Access-Control-Max-Age`(1728000)) >>> >>> def cors[T]: Directive0 = mapRequestContext { ctx => >>> ctx.withRouteResponseHandling({ >>> //It is an option requeset for a resource that responds to some other >>> method >>> case Rejected(x) if (ctx.request.method.equals(HttpMethods.OPTIONS) && >>> !x.filter(_.isInstanceOf[MethodRejection]).isEmpty) => { >>> val allowedMethods: List[HttpMethod] = >>> x.filter(_.isInstanceOf[MethodRejection]).map(rejection => { >>> rejection.asInstanceOf[MethodRejection].supported >>> }) >>> ctx.complete(HttpResponse().withHeaders( >>> `Access-Control-Allow-Methods`(OPTIONS, allowedMethods: _*) :: >>> allowOriginHeader :: >>> optionsCorsHeaders >>> )) >>> } >>> }).withHttpResponseHeadersMapped { headers => >>> allowOriginHeader :: headers >>> } >>> } >>> } >>> >>> -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to a topic in the > Google Groups "Akka User List" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/akka-user/5RCZIJt7jHo/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Sincerely, Yar Illich -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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