aspnettokens-block6.cs

public void ConfigureServices(IServiceCollection services)
{
    var thisServiceUrl = "https://myotherservice.myorg.com"; // Read from appsettings instead.

    ... // configure services for your application

    // configure services for authentication
    services
        .AddAuthentication(options =>
        {
            option.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            option.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
        })
        .AddJwtBearer(options =>
        {
            options.Audience = thisServiceUrl;
            options.Authority = Constants.Issuer;
            options.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateAudience = true,
                ValidateIssuer = true,
                ValidateIssuerSigningKey = true,
                ValidateLifetime = true,
            };
        });

    return services;
}