ASP.NET API + Swagger + Azure B2C

Question

This is my 3. try to get help for a ASP.NET Core + Swagger + Azure B2C demo project. I am not sending code because this results into this

https://learn.microsoft.com/en-us/answers/questions/2107081/critical-error-ask-a-question-)-page-not-found?comment=question-page-not-found?comment=question)

Has anyone a short demo for me to make a swagger page that has the endpoint "/test" to verify that the authentication with the bearer token worked?

Answer 1

first you need an anonymous endpoint that allows login and returns a valid token:

https://learn.microsoft.com/en-us/azure/active-directory-b2c/access-tokens

you can skip this if you already have a way to get the access token value

then add token support to swagger

builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo { Title = "Test01", Version = "v1" });
    c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme()
    {
        Name = "Authorization",
        Type = SecuritySchemeType.ApiKey,
        Scheme = "Bearer",
        BearerFormat = "JWT",
        In = ParameterLocation.Header,
        Description = "JWT Authorization header value: Bearer {token}"
    });
    c.AddSecurityRequirement(new OpenApiSecurityRequirement
    {
        {
            new OpenApiSecurityScheme
            {
                 Reference = new OpenApiReference
                 {
                    Type = ReferenceType.SecurityScheme,
                    Id = "Bearer"
                 }
            },
            new string[] {}
         }
    });
});

in the swagger ui via authorize, you can enter the token header value ("Bearer {token}") using the token the login action returns