public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton(_ => Configuration);

    services.AddDbContext<ApplicationDbContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

    services.AddResponseCaching();

    services.AddIdentity<ApplicationUser, IdentityRole>()
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultTokenProviders();

    var secretKey = Configuration.GetSection("AppSettings")["SecretKey"];
    var signingKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes(secretKey));
    var tokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuerSigningKey = true,
        IssuerSigningKey = signingKey,
        ValidateIssuer = true,
        ValidIssuer = "arnvanhoutte",
        ValidateAudience = true,
        ValidAudience = "User",
        ValidateLifetime = true,
        ClockSkew = TimeSpan.Zero
    };

    services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddJwtBearer(options =>
        {
            options.TokenValidationParameters = tokenValidationParameters;
        });

    services.AddWebSocketManager();

    services.AddMvc();

    services.AddTransient<Seed>();
}