#### [Abblix\.Oidc\.Server\.MinimalApi](https://www.abblix.com/en/docs/api/abblix-oidc-server-minimalapi 'index')
### [Abblix\.Oidc\.Server\.MinimalApi\.Formatters\.Interfaces](https://www.abblix.com/en/docs/api/abblix-oidc-server-minimalapi/Abblix.Oidc.Server.MinimalApi.Formatters.Interfaces 'Abblix\.Oidc\.Server\.MinimalApi\.Formatters\.Interfaces')

## IBackChannelAuthenticationResponseFormatter Interface

Formats the result of a CIBA backchannel authentication request into an [Microsoft\.AspNetCore\.Http\.IResult](https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.http.iresult 'Microsoft\.AspNetCore\.Http\.IResult')\.

```csharp
public interface IBackChannelAuthenticationResponseFormatter
```

Derived  
↳ [BackChannelAuthenticationResponseFormatter](https://www.abblix.com/en/docs/api/abblix-oidc-server-minimalapi/Abblix.Oidc.Server.MinimalApi.Formatters.BackChannelAuthenticationResponseFormatter 'Abblix\.Oidc\.Server\.MinimalApi\.Formatters\.BackChannelAuthenticationResponseFormatter')
### Methods

## IBackChannelAuthenticationResponseFormatter\.FormatResponseAsync\(BackChannelAuthenticationRequest, ClientRequest, Result\<BackChannelAuthenticationSuccess,OidcError\>\) Method {#Abblix.Oidc.Server.MinimalApi.Formatters.Interfaces.IBackChannelAuthenticationResponseFormatter.FormatResponseAsync(Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest,Abblix.Oidc.Server.Model.ClientRequest,Abblix.Utils.Result_Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess,Abblix.Oidc.Server.Common.OidcError_)}

Formats the backchannel authentication result: a JSON success response, or the RFC\-compliant OAuth error
\(401 with a `WWW-Authenticate` challenge, 403, or 400 depending on the failure\)\.

```csharp
System.Threading.Tasks.Task<Microsoft.AspNetCore.Http.IResult> FormatResponseAsync(Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest request, Abblix.Oidc.Server.Model.ClientRequest clientRequest, Abblix.Utils.Result<Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess,Abblix.Oidc.Server.Common.OidcError> response);
```
#### Parameters

###### `request` [BackChannelAuthenticationRequest](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest 'Abblix\.Oidc\.Server\.Model\.BackChannelAuthenticationRequest') {#Abblix.Oidc.Server.MinimalApi.Formatters.Interfaces.IBackChannelAuthenticationResponseFormatter.FormatResponseAsync(Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest,Abblix.Oidc.Server.Model.ClientRequest,Abblix.Utils.Result_Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess,Abblix.Oidc.Server.Common.OidcError_).request}

The original backchannel authentication request that triggered the response\.

###### `clientRequest` [ClientRequest](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.ClientRequest 'Abblix\.Oidc\.Server\.Model\.ClientRequest') {#Abblix.Oidc.Server.MinimalApi.Formatters.Interfaces.IBackChannelAuthenticationResponseFormatter.FormatResponseAsync(Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest,Abblix.Oidc.Server.Model.ClientRequest,Abblix.Utils.Result_Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess,Abblix.Oidc.Server.Common.OidcError_).clientRequest}

The client request, used to match the `WWW-Authenticate` scheme on a 401
            per RFC 6749 §5\.2\.

###### `response` [Abblix\.Utils\.Result&lt;](https://www.abblix.com/en/docs/api/abblix-utils/Abblix.Utils.Result_TSuccess_TFailure_ 'Abblix\.Utils\.Result\`2')[BackChannelAuthenticationSuccess](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess 'Abblix\.Oidc\.Server\.Model\.BackChannelAuthenticationSuccess')[,](https://www.abblix.com/en/docs/api/abblix-utils/Abblix.Utils.Result_TSuccess_TFailure_ 'Abblix\.Utils\.Result\`2')[OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError')[&gt;](https://www.abblix.com/en/docs/api/abblix-utils/Abblix.Utils.Result_TSuccess_TFailure_ 'Abblix\.Utils\.Result\`2') {#Abblix.Oidc.Server.MinimalApi.Formatters.Interfaces.IBackChannelAuthenticationResponseFormatter.FormatResponseAsync(Abblix.Oidc.Server.Model.BackChannelAuthenticationRequest,Abblix.Oidc.Server.Model.ClientRequest,Abblix.Utils.Result_Abblix.Oidc.Server.Model.BackChannelAuthenticationSuccess,Abblix.Oidc.Server.Common.OidcError_).response}

The backchannel authentication result to format\.

#### Returns
[System\.Threading\.Tasks\.Task&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[Microsoft\.AspNetCore\.Http\.IResult](https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.http.iresult 'Microsoft\.AspNetCore\.Http\.IResult')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')