Multiple items
val string : value:'T -> string

Full name: Microsoft.FSharp.Core.Operators.string

--------------------
type string = System.String

Full name: Microsoft.FSharp.Core.string

val using : resource:'T -> action:('T -> 'U) -> 'U (requires 'T :> System.IDisposable)

Full name: Microsoft.FSharp.Core.Operators.using

namespace System

namespace System.Web

val id : x:'T -> 'T

Full name: Microsoft.FSharp.Core.Operators.id

Multiple items
type HttpApplication =
  new : unit -> HttpApplication
  member AddOnAcquireRequestStateAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnAuthenticateRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnAuthorizeRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnBeginRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnEndRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnLogRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnMapRequestHandlerAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnPostAcquireRequestStateAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  member AddOnPostAuthenticateRequestAsync : bh:BeginEventHandler * eh:EndEventHandler -> unit + 1 overload
  ...

Full name: System.Web.HttpApplication

--------------------
System.Web.HttpApplication() : unit

val set : elements:seq<'T> -> Set<'T> (requires comparison)

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.set

type bool = System.Boolean

Full name: Microsoft.FSharp.Core.bool

val async : AsyncBuilder

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.async

ASP.NET 5

Filip W

www.strathweb.com

@filip_woj

github.com/filipw

Recipes

ASP.NET Web API 2 Recipes

Recipes

ASP.NET 2002

2001

ASP.NET 2002

private void Button1_Click
(object sender, System.EventArgs e)
{
    //textbox1 and textbox2 are webform
    //controls
    Session["name"]=TextBox1.Text;
    Session["email"]=TextBox2.Text;
    Server.Transfer("anotherwebform.aspx");
}

Nokia 6340

Nokia

ASP.NET 2014

2014

ASP.NET 2014

public ActionResult Details(int? id)
{
    if (id == null)
    {
        return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
    }
    Student student = db.Students.Find(id);
    if (student == null)
    {
        return HttpNotFound();
    }
    return View(student);
}

Runtime

pretty much unchanged
Http Handlers, Http Modules, HttpContext, SessionState, Request pipeline
MVC (2009) and Web API (2012) are, at their hearts, handlers too

MVC & Web API are built on HTTP handlers

unicorn

Plenty of problems

bloated
no side by side deployments, GAC
tied to IIS
tied to Visual Studio
tied to Windows
based on old compiler

ASP.NET 5

Entire managed runtime rewritten from scratch

can target desktop CLR but to get most benefits, target Core CLR
Web API + MVC + WebPages = MVC 6, no WebForms
based on Open Web Interface for .NET

OWIN

Environment dictionary

1:	IDictionary<string, object>

Middleware

1:	using AppFunc = Func<IDictionary<string, object>, Task>;

Chained middleware

1:	Func<AppFunc, AppFunc>

Ok I want to use the Core CLR!

What does it mean for me?

Everything as you know it, broken

all referenced libraries need to target Core CLR too
new ASPNETCORE50 profile - a subset of desktop .NET

Cross platform

develop and run on Windows, Linux and OS X
Any editor, no VS dependencies at any point in dev cycle
includes a libuv.dll based server - Kestrel
currently Mono based, will move to .NET Core

Lightweight

Runtime deployable with application (true side-by-side)
Small memory footprint
Pick pieces you need
Highly optimized

Excellent command line experience

KPM - package manager (command line tool)
KVM - version manager (command line tool)
K - runtime entry point (command line tool)
KRE - runtime, bin deployable
no dependency on Visual Studio! Visual Studio is just a client

0 to 60 in 5 seconds

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@powershell -NoProfile -ExecutionPolicy unrestricted 
    -Command "iex ((new-object net.webclient).
    DownloadString('https://raw.githubusercontent.com/
    aspnet/Home/master/kvminstall.ps1'))"

kvm upgrade
git clone <my ASP.NET repo>
kpm restore
k web

Reminds you of something?

ASP.NET vs ASP.NET 5

F5 - Compile & Run

ASP.NET

ASP.NET 5

Roslyn based compilation on the fly

No more csproj file

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    <Reference Include="System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral,
        PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>System.Web.WebPages.Razor.dll</HintPath>
    </Reference>
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Web" />
    <Reference Include="System.Web.Extensions" />
    <Reference Include="System.Web.Routing" />
    <Reference Include="System.Net.Http" />
    <Reference Include="WebGrease">
      <HintPath>packages
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <Compile Include="App_Start\BundleConfig.cs" />
    <Compile Include="App_Start\FilterConfig.cs" />
    <Compile Include="App_Start\RouteConfig.cs" />

No more NuGet packages.config

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<packages>
  <package id="Antlr" version="3.4.1.9004" targetFramework="net45" />
  <package id="bootstrap" version="3.0.0" targetFramework="net45" />
  <package id="EntityFramework" version="6.1.1" 
    targetFramework="net45" />
  <package id="jQuery" version="1.10.2" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.2" 
    targetFramework="net45" />
  <package id="Microsoft.AspNet.Razor" version="3.2.2" 
    targetFramework="net45" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" 
    targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.2" 
    targetFramework="net45" />
  <package id="Microsoft.Owin" version="3.0.0" targetFramework="net45" />
  <package id="Modernizr" version="2.6.2" targetFramework="net45" />
  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net45" />
  <package id="Owin" version="1.0" targetFramework="net45" />
</packages>

Project.json

{
    "dependencies": {
        "EntityFramework.SqlServer": "7.0.0-beta1",
        "Microsoft.AspNet.Mvc": "6.0.0-beta1",
        "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta1",
        "Microsoft.AspNet.Security.Cookies": "1.0.0-beta1",
        "Microsoft.AspNet.Server.IIS": "1.0.0-beta1",
        "Microsoft.AspNet.Server.WebListener": "1.0.0-beta1",
        "Microsoft.AspNet.StaticFiles": "1.0.0-beta1",
        "Microsoft.Framework.ConfigurationModel.Json": "1.0.0-beta1",
        "Microsoft.Framework.CodeGenerators.Mvc": "1.0.0-beta1"
    },
    "commands": {
        "web": "Microsoft.AspNet.Hosting --server Microsoft.AspNet.Server.WebListener 
            --server.urls http://localhost:5000",
        "ef":  "EntityFramework.Commands"
    },
    "frameworks": {
        "aspnet50": { },
        "aspnetcore50": { }
    }
}

Did you notice???

No more list of files!

No more web.config to define pipeline

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<httpModules>
  <add name="ErrorModule" type="MyAssembly.ErrorLogModule, 
    MyAssembly, Version=1.0.47.0, Culture=neutral, 
    PublicKeyToken=978d5e1bd64b33e5" />
</httpModules>

<httpHandlers>
    <add 
        verb="POST,GET" 
        path="foo/bar.aspx" 
        type="MyAssembly.Handler, 
          MyAssembly, Version=1.0.47.0, Culture=neutral, 
          PublicKeyToken=978d5e1bd64b33e5" />
</httpHandlers>

<authentication mode="Forms">
    <forms name="MyAuthCookie" loginUrl="login.aspx" timeout="30" />
</authentication>

No more Global.asax

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public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

    protected void Application_End(object sender, EventArgs e)
    {
        //  Code that runs on app shutdown
    }

    protected void Application_Error(object sender, EventArgs e)
    {
        // Code that deals with an unhandled error
    }
}

Code based pipeline definition, OWIN everything

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public class Startup
{
    public void Configure(IApplicationBuilder app)
    {
        //Configure SignalR
        app.UseSignalR();

        // Add static files to the request pipeline
        app.UseStaticFiles();

        // Add cookie-based authentication to the request pipeline
        app.UseIdentity();

        //Add MVC
        app.UseMvc();
    }
}

No more appSettings / custom config

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<configSections>
  <sectionGroup name="myGroup">
    <section 
      name="mySection" 
      type="MyOrg.Common.Config" 
      allowLocation="true" 
      allowDefinition="Everywhere"
    />
  </sectionGroup>
</configSections>

 <appSettings>
    <add key="credentials" value="localhost;uid=foo;pwd=bar;"/>
    <add key="server" value="192.168.0.115"/>
 </appSettings>

Code based configuration

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public class Startup
{
    public Startup()
    {
        Configuration = new Configuration()
                    .AddJsonFile("config.json")
                    .AddEnvironmentVariables();
    }

    public IConfiguration Configuration { get; private set; }

    public void Configure(IApplicationBuilder app)
    {
        //omitted for brevity
    }

}

No more HTTP handlers

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public class HelloWorldHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        context.Response.Write("Hello World");
    }

    public bool IsReusable
    {
        get { return false; }
    }
}

Middleware

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public class Startup  
{
    public void Configure(IApplicationBuilder app)
    {
        app.Run(async context =>
        {
            context.Response.ContentType = "text/plain";
            await context.Response.WriteAsync("Hello World!");        
        });
    }
}

No more HTTP modules

public class RequestTimeIntervalModule : IHttpModule
{
    public void Dispose() {}

    public void Init(HttpApplication httpApp)
    {
        httpApp.BeginRequest += new EventHandler(OnBeginRequest);
        httpApp.EndRequest += new EventHandler(OnEndRequest);
    }

    public void OnBeginRequest(Object s, EventArgs e)
    {
        ((HttpApplication)s).Context.Items["start"] = DateTime.Now;
    }

    public void OnEndRequest(Object s, EventArgs e)
    {
        var beginRequestTime =
            (DateTime)((HttpApplication)sender).Context.Items["start"];
        var ts = DateTime.Now - beginRequestTime;
        ((HttpApplication)s).Context.Response.AppendHeader("Execution", ts);
    }
}

Middleware

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public class TimerMiddleware
{
    private readonly RequestDelegate _next;

    public ErrorHandlerMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task Invoke(HttpContext context)
    {
        var beginRequestTime = DateTime.Now;
        await _next(context);
        var ts = DateTime.Now - beginRequestTime;
        context.Response.Headers["ExecutionTime"] = ts;
    }
}

No more script zoo

First class support for bower, grunt, gulp

No more traditional DLL references

NuGet first

What else?

Built-in Dependency Injection

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public class Startup
{
    public void Configure(IApplicationBuilder app)
    {
        app.UseServices(services =>
        {
            // Set up the dependencies
            services.AddTransient<IFooService, FooService>();
            services.AddSingleton<IFooRepository, FooRepository>();
        });
    }
}

Assembly Neutral Interfaces

contracts between components without a binary dependency
an interface identity is not be tied to its assembly
based on Roslyn (meta programming)
"faux" structural typing [AssemblyNeutral] public interface ILogger { void Log(string message); }

Credits:

One architecture diagrams from Cesar de la Torre
One architecture diagram from Damian Edwards