同じタイプの複数のAuthenticationSchemesをサポートします。

Question

私はIdentityServer4で作業し、同じタイプの複数の外部プロバイダ（私の場合はOpenIdConnect）を追加しようとしています。しかし私はいくつかの問題にぶち当たっています。

services.AddAuthentication() 
// Azure AD 
.AddOpenIdConnect("oidc", "Azure AD", x => 
{ 
    x.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme; 
    x.SignOutScheme = IdentityServerConstants.SignoutScheme; 
    x.ClientId = "some-client-id"; 
    x.Authority = "https://login.microsoftonline.com/common"; 
    x.ResponseType = OpenIdConnectResponseType.IdToken; 
    x.TokenValidationParameters = new TokenValidationParameters 
    { 
     ValidateIssuer = false 
    }; 
}) 
// Identity Server 
.AddOpenIdConnect("oidc", "My Other Identity Server", x => 
{ 
    x.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme; 
    x.SignOutScheme = IdentityServerConstants.SignoutScheme; 
    x.ClientId = "some-other-client-id"; 
    x.Authority = "http://localhost:6000"; //Another Identity Server I want to treat as external provider 
    x.RequireHttpsMetadata = false; 
    x.ResponseType = OpenIdConnectResponseType.IdToken; 
    x.TokenValidationParameters = new TokenValidationParameters 
    { 
     ValidateIssuer = true 
    }; 
}); 

原因：

Scheme already exists: oidc 
    at Microsoft.AspNetCore.Authentication.AuthenticationOptions.AddScheme(String name, Action`1 configureBuilder) 
    at Microsoft.AspNetCore.Authentication.AuthenticationBuilder.<>c__DisplayClass4_0`2.<AddScheme>b__0(AuthenticationOptions o) 
    at Microsoft.Extensions.Options.ConfigureNamedOptions`1.Configure(String name, TOptions options) 
    at Microsoft.Extensions.Options.OptionsFactory`1.Create(String name) 
    at Microsoft.Extensions.Options.OptionsManager`1.<>c__DisplayClass5_0.<Get>b__0() 
    at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode) 
    at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor) 
    at System.Lazy`1.CreateValue() 
    at Microsoft.Extensions.Options.OptionsCache`1.GetOrAdd(String name, Func`1 createOptions) 
    at Microsoft.Extensions.Options.OptionsManager`1.Get(String name) 
    at Microsoft.Extensions.Options.OptionsManager`1.get_Value() 
    at Microsoft.AspNetCore.Authentication.AuthenticationSchemeProvider..ctor(IOptions`1 options) 

services.AddAuthentication() 
// Azure AD 
.AddOpenIdConnect("oidc", "Azure AD", x => 
{ 
    x.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme; 
    x.SignOutScheme = IdentityServerConstants.SignoutScheme; 
    x.ClientId = "some-client-id"; 
    x.Authority = "https://login.microsoftonline.com/common"; 
    x.ResponseType = OpenIdConnectResponseType.IdToken; 
    x.TokenValidationParameters = new TokenValidationParameters 
    { 
     ValidateIssuer = false 
    }; 
}) 
// Identity Server 
.AddOpenIdConnect("oidc-idserver", "My Other Identity Server", x => 
{ 
    x.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme; 
    x.SignOutScheme = IdentityServerConstants.SignoutScheme; 
    x.ClientId = "some-other-client-id"; 
    x.Authority = "http://localhost:6000"; //Another Identity Server I want to treat as external provider 
    x.RequireHttpsMetadata = false; 
    x.ResponseType = OpenIdConnectResponseType.IdToken; 
    x.TokenValidationParameters = new TokenValidationParameters 
    { 
     ValidateIssuer = true 
    }; 
}); 

私は彼らに異なるスキームを与えるとバック外部プロバイダの記事、そして私は、次の例外を取得します。

原因：

Exception: Correlation failed. 
    Microsoft.AspNetCore.Authentication.RemoteAuthenticationHandler+<HandleRequestAsync>d__12.MoveNext() 

Answer 1

コメンターは、ソリューションがようミドルウェアは、外部プロバイダが実行されているかを知ることができCallbackPathとSignedOutCallbackPath特定を追加することで示唆したように。