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CORS response with Suave

A little website that lets you make CORS requests to it (update to the latest Suave version)

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// Run as console app or fsx
open Suave.Http
open Suave.Types
open Suave.Http.Successful
open Suave.Http.Writers
open Suave.Http.Applicatives
open Suave.Web

let setCORSHeaders = 
    setHeader  "Access-Control-Allow-Origin" "*" 
    >>= setHeader "Access-Control-Allow-Headers" "content-type"

let allow_cors : WebPart =
    choose [
        OPTIONS >>= 
            fun context -> 
                context |> (
                    setCORSHeaders
                    >>= OK "CORS approved" )
    ]

let webSite =
    choose [
        allow_cors
        GET >>= OK "URLs are for wimps. GETting something? This is what you get."
    ]

startWebServer defaultConfig webSite

(*
=== A fiddler scratchpad to test

OPTIONS http://localhost:8083/ HTTP/1.1
User-Agent: Fiddler
Origin: http://www.example-social-network.com
Host: localhost:8083
*)
// See the 'F# Tutorial' project for more help.
namespace Suave
module Http

from Suave
module Web

from Suave
val setCORSHeaders : obj

Full name: Script.setCORSHeaders
val allow_cors : WebPart

Full name: Script.allow_cors
type WebPart = Suave.WebPart.WebPart<HttpContext>

Full name: Suave.Http.WebPart
union case HttpMethod.OPTIONS: HttpMethod
val context : apply:(HttpContext -> HttpContext -> 'a) -> context:HttpContext -> 'a

Full name: Suave.Http.context
val webSite : WebPart

Full name: Script.webSite
union case HttpMethod.GET: HttpMethod
val startWebServer : config:Suave.SuaveConfig -> webpart:WebPart -> unit

Full name: Suave.Web.startWebServer
val defaultConfig : Suave.SuaveConfig

Full name: Suave.Web.defaultConfig

More information

Link:http://fssnip.net/mL
Posted:8 years ago
Author:vilinski
Tags: suave , cors

This web site is created using F# and Suave web server. It is hosted on Azure and the source code is on GitHub. Contributions are welcome!

The first version of fssnip.net has been created by @tomaspetricek back in 2010. This web site is a new, open-source and contribution-friendly version.