IdentityServer4 Quickstart issues - asp.net

Question

I am currently at this page of the IdentityServer 4 guide http://docs.identityserver.io/en/dev/quickstarts/3_interactive_login.html and I am trying to start the MVC application.
However, I keep getting this error when I start my Client application
InvalidOperationException: Unable to resolve service for type 'IdentityServer4.Services.IIdentityServerInteractionService' while attempting to activate 'IdentityServer4.Quickstart.UI.HomeController'.
I went into the IdentityServer4 GitHub and copied the code from there but it doesn't run at all.
I am not sure how to proceed from here.
This is my Startup.cs
using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
namespace IdentityServerClient
{
public class Startup
{
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
services.AddAuthentication(options =>
{
options.DefaultScheme = "Cookies";
options.DefaultChallengeScheme = "oidc";
})
.AddCookie("Cookies")
.AddOpenIdConnect("oidc", options =>
{
options.SignInScheme = "Cookies";
options.Authority = "http://localhost:5000";
options.RequireHttpsMetadata = false;
options.ClientId = "mvc";
options.SaveTokens = true;
});
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
}
app.UseAuthentication();
app.UseStaticFiles();
app.UseMvcWithDefaultRoute();
}
}
}
I can't get to the login page shown on the documentation as well.

Answer 1

If you're using the quickstart UI, you should be using the guide on it, here:
https://github.com/IdentityServer/IdentityServer4.Quickstart.UI
To quote that page:
Next you need to configure the authentication handlers:
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
// some details omitted
services.AddIdentityServer();
services.AddAuthentication()
...
You're missing:
services.AddIdentityServer()
.AddInMemoryCaching()
.AddClientStore<InMemoryClientStore>()
.AddResourceStore<InMemoryResourcesStore>(); // <-- Add this
As a result, none of the identity server services are registered to the dependency injection container, which is why you're seeing that error.
Looks like the tutorial documentation you linked to is out of date.
--
Here is a complete set of steps to follow:
dotnet new sln -n HelloID4
dotnet new mvc -n HelloID4
dotnet sln add HelloID4/HelloID4.csproj
cd HelloID4
git clone --depth 1 https://github.com/IdentityServer/IdentityServer4.Quickstart.UI
cp -r IdentityServer4.Quickstart.UI/* .
dotnet add package IdentityServer4
rm -r Controllers/
dotnet watch run
Now modify your Startup.cs to look like this:
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
}); services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
services.AddIdentityServer()
.AddInMemoryCaching()
.AddClientStore<InMemoryClientStore>()
.AddResourceStore<InMemoryResourcesStore>();
}

Answer 2

UPDATE
*Review this code : it may help, because i am also learning on it, and its working for me. *
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
var migrationsAssembly = typeof(Startup).GetTypeInfo().Assembly.GetName().Name;
// configure identity server with in-memory stores, keys, clients and scopes
services.AddIdentityServer()
.AddDeveloperSigningCredential()
.AddTestUsers(Config.GetUsers())
//.AddInMemoryClients(Config.GetClients())
// this adds the config data from DB (clients, resources)
.AddConfigurationStore(options =>
{
options.ConfigureDbContext = builder =>
builder.UseSqlServer(Configuration.GetConnectionString("IdentityConnectionString"), sql =>
sql.MigrationsAssembly(migrationsAssembly));
})
// this adds the operational data from DB (codes, tokens, consents)
.AddOperationalStore(options =>
{
options.ConfigureDbContext = builder =>
builder.UseSqlServer(Configuration.GetConnectionString("IdentityConnectionString"),
sql => sql.MigrationsAssembly(migrationsAssembly));
// this enables automatic token cleanup. this is optional.
options.EnableTokenCleanup = true;
options.TokenCleanupInterval = 30;
});
//.AddInMemoryIdentityResources(Config.GetIdentityResources())
//.AddInMemoryApiResources(Config.GetApiResources())
services.AddAuthentication();
}
// clients want to access resources (aka scopes)
public static IEnumerable<Client> GetClients()
{
// client credentials client
return new List<Client>
{
new Client
{
ClientId = "client",
AllowedGrantTypes = GrantTypes.ClientCredentials,
ClientSecrets =
{
new Secret("secret".Sha256())
},
AllowedScopes = { "api1" }
},
// resource owner password grant client
new Client
{
ClientId = "ro.client",
AllowedGrantTypes = GrantTypes.ResourceOwnerPassword,
ClientSecrets =
{
new Secret("secret".Sha256())
},
AllowedScopes = { "api1" }
},
// OpenID Connect hybrid flow and client credentials client (MVC)
};
}
if you are not using in-memory service
If you are getting this error : Unable to resolve service for type 'IdentityServer4.Stores.IClientStore'
Register the stores and implementation explicitly : ( give a try )
services.AddScoped<IUserStore<User>, UserService>();
services.AddScoped<IClientStore, ClientService>();
services.AddScoped<IScopeStore, ScopeService>();
services.AddScoped<IPersistedGrantStore, GrantService>();