Simple kestrel-based ASP.NET server in FSharp on dotnet core RC2

Program.fs

(*  
 * To get started, `dotnet new --lang f#`
 * Add these to the 'dependencies' section in project.json:
   "System.Threading.Tasks": "4.0.11-rc2-*",
   "Microsoft.AspNetCore.Hosting":"1.0.0-rc2-final",
   "Microsoft.Extensions.Logging.Console":"1.0.0-rc2-final",
   "Microsoft.AspNetCore.Server.Kestrel":"1.0.0-rc2-final"
* And then edit Program.fs with reqHandler for the RequestDelegate,
* wrapping an async workflow.
*)

open System
open System.Threading.Tasks
open Microsoft.AspNetCore.Hosting
open Microsoft.AspNetCore.Builder
open Microsoft.AspNetCore.Http
open Microsoft.Extensions.Logging
open Microsoft.Extensions.DependencyInjection
open Microsoft.Extensions.Logging.Console

type Startup() = 
    member x.Configure (app:IApplicationBuilder, hosting:IHostingEnvironment, loggerFactory:ILoggerFactory) =
        loggerFactory.AddConsole(LogLevel.Debug) |> ignore
        let logger = loggerFactory.CreateLogger("MyApp")
        let reqHandler (ctx: HttpContext) = 
            async {
                sprintf "Received request at %O" ctx.Request.Path
                |> logger.LogInformation
                ctx.Response.ContentType <- "application/json"
                do! ctx.Response.WriteAsync ("""{"hello":"world"}""") |> Async.AwaitTask
            } |> Async.StartAsTask :> Task
        app.Run(RequestDelegate(reqHandler))
      
[<EntryPoint>]
let main argv = 
    let h = WebHostBuilder().UseKestrel().UseStartup<Startup>().Build()
    h.Run()
    0

project.json

{
  "version": "1.0.0-*",
  "buildOptions": {
    "emitEntryPoint": true,
    "compilerName": "fsc",
    "compile": {
      "includeFiles": [
        "Program.fs"
      ]
    }
  },
  "dependencies": {
    "Microsoft.FSharp.Core.netcore": "1.0.0-alpha-160316",
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0-rc2-3002702"
    },
    "System.Threading.Tasks": "4.0.11-rc2-*",
    "Microsoft.AspNetCore.Hosting":"1.0.0-rc2-final",
    "Microsoft.Extensions.Logging.Console":"1.0.0-rc2-final",
    "Microsoft.AspNetCore.Server.Kestrel":"1.0.0-rc2-final"
  },
  "tools": {
    "dotnet-compile-fsc": {
      "version": "1.0.0-*",
      "imports": [
        "dnxcore50",
        "portable-net45+win81",
        "netstandard1.3"
      ]
    }
  },
  "frameworks": {
    "netstandard1.5": {
      "imports": [
        "portable-net45+win8",
        "dnxcore50"
      ]
    }
  }
}