nancy.aspnetcore.session's Introduction

Nancy.AspNetCore.Session

Enables AspNetCore Sessions for use in Nancy

This is a lightweight middleware that integrates Nancy Sessions with AspNetCore Sessions, and then you can get use any other AspNetCore's session middleware in Nancy.

To enable this first in your Startup class's ConfigureServices do the following.

Install

Nancy AspNetCore Session is available on NuGet:

Install-Package Nancy.AspNetCore.Session

Step 1.

Call services.AddNancyAspnetCoreSession() in Startup's ConfigureServices like the following:

public void ConfigureServices(IServiceCollection services)
{
    services
        //Add in-proc memory Session Cache Middleware, 
        //this can be any other middleware such as Redis Cache
        .AddDistributedMemoryCache()
        //Add AspNetCore Session
        .AddSession()
        //Wire up AspNetCore with Nancy
        .AddNancyAspnetCoreSession(); 
}

Step 2.

Call app.UseNancyAspnetCoreSession() in Startup's Configure like the following

public void Configure(IApplicationBuilder app)
{
	app
	.UseSession()
    //Wire up AspNetCore with Nancy
	.UseNancyAspnetCoreSession()
	.UseOwin(x => {
		x.UseNancy();
	});
}

And that's it. Nancy session is now wired up to AspNetCore session and you can access it using Nancy's Session like this:

public class SampleNancyModule:NancyModule
{
    public SampleNancyModule()
    {
        Get("/{myname}", p =>
        {
            Session["sample"] = (string)p.myname;

            return "Hello " + (Session["sample"]?.ToString() ?? "");
        });
    }
}

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nancy.aspnetcore.session's Issues

Method not found: CommitAsync

It seems that the interface for IDistributedCache has changed between 1.6 and 2.0 of .NET Standard. I'm running .NET core 2.0 and I get the following error when using the distributed memory cache:

Unhandled Exception: System.MissingMethodException: Method not found: 'System.Threading.Tasks.Task Microsoft.AspNetCore.Http.ISession.CommitAsync()'.
   at Nancy.AspNetCore.Session.NancyAspNetCoreSession.<SaveAsync>d__16.MoveNext()
   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)
   at Nancy.AspNetCore.Session.NancyAspNetCoreSession.SaveAsync()
   at Nancy.AspNetCore.Session.NancyAspNetCoreSession.<SaveSession>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Nancy.AspNetCore.Session.NancyAspNetCoreSession.<>c.<<Enable>b__21_1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()

Since I'm still fairly new at all of this I am not sure how to proceed to fix this.

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