I'm trying to add multiple authentication schemes with ASP.NET Core 3.1 and am running into this issue when attempting to send a bearer token to the server:
System.InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).
at Microsoft.AspNetCore.Authentication.AuthenticationService.ChallengeAsync(HttpContext context, String scheme, AuthenticationProperties properties)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at NWebsec.AspNetCore.Middleware.Middleware.CspMiddleware.Invoke(HttpContext context)
at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
Here's the relevant code:
services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer("Custom", options =>
{
options.SaveToken = true;
options.RequireHttpsMetadata = true;
options.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
IssuerSigningKey = key,
ValidateAudience = false,
ValidateIssuer = false
};
})
.AddJwtBearer("Keycloak", options =>
{
options.Authority = "http://localhost:8080/auth/realms/test";
options.SaveToken = true;
options.RequireHttpsMetadata = false;
options.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
IssuerSigningKey = key,
ValidateAudience = false,
ValidateIssuer = false
};
});
services.AddAuthorization(options =>
{
var authorizationPolicy = new AuthorizationPolicyBuilder()
.AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme, "Custom", "Keycloak")
.RequireAuthenticatedUser().Build();
options.AddPolicy("Bearer", authorizationPolicy);
});
Anyone able to see what I'm doing wrong here? Both schemes work individually if I just use one.
I found a solution.
I needed to add
[Authorize(AuthenticationSchemes = "Custom, Keycloak")]
In my base controller.
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