Home > Reference > Models > Client

Client

Duende.IdentityServer.Models.Client

The Client class models an OpenID Connect or OAuth 2.0 client - e.g. a native application, a web application or a JS-based application.

public static IEnumerable<Client> Get()
{
    return new List<Client>
    {
        ///////////////////////////////////////////
        // machine to machine client
        //////////////////////////////////////////
        new Client
        {
            ClientId = "machine",
            ClientSecrets = { Configuration["machine.secret"] },
            
            AllowedGrantTypes = GrantTypes.ClientCredentials,
            
            AllowedScopes = machineScopes
        },

        ///////////////////////////////////////////
        // web client
        //////////////////////////////////////////
        new Client
        {
            ClientId = "web",
            
            ClientSecrets = { new Secret(Configuration["web.secret"]) },

            AllowedGrantTypes = GrantTypes.Code,
            
            RedirectUris = { "https://myapp.com:/signin-oidc" },
            PostLogoutRedirectUris = { "https://myapp.com/signout-callback-oidc" },

            BackChannelLogoutUri = "https://myapp.com/backchannel-logout",

            AllowOfflineAccess = true,
            AllowedScopes = webScopes
        }
    }
}

Basics

Enabled

Specifies if client is enabled. Defaults to true.
ClientId

Unique ID of the client
ClientSecrets

List of client secrets - credentials to access the token endpoint.
RequireClientSecret

Specifies whether this client needs a secret to request tokens from the token endpoint (defaults to true)
RequireRequestObject

Specifies whether this client needs to wrap the authorize request parameters in a JWT (defaults to false)
AllowedGrantTypes

Specifies the grant types the client is allowed to use. Use the GrantTypes class for common combinations.
RequirePkce

Specifies whether clients using an authorization code based grant type must send a proof key (defaults to true).
AllowPlainTextPkce

Specifies whether clients using PKCE can use a plain text code challenge (not recommended - and defaults to false)
RedirectUris

Specifies the allowed URIs to return tokens or authorization codes to
AllowedScopes

By default a client has no access to any resources - specify the allowed resources by adding the corresponding scopes names
AllowOfflineAccess

Specifies whether this client can request refresh tokens (be requesting the offline_access scope)
AllowAccessTokensViaBrowser

Specifies whether this client is allowed to receive access tokens via the browser. This is useful to harden flows that allow multiple response types (e.g. by disallowing a hybrid flow client that is supposed to use code id_token to add the token response type and thus leaking the token to the browser).
Properties

Dictionary to hold any custom client-specific values as needed.

Authentication / Session Management

PostLogoutRedirectUris

Specifies allowed URIs to redirect to after logout.
FrontChannelLogoutUri

Specifies logout URI at client for HTTP based front-channel logout.
FrontChannelLogoutSessionRequired

Specifies if the user’s session id should be sent to the FrontChannelLogoutUri. Defaults to true.
BackChannelLogoutUri

Specifies logout URI at client for HTTP based back-channel logout.
BackChannelLogoutSessionRequired

Specifies if the user’s session id should be sent in the request to the BackChannelLogoutUri. Defaults to true.
EnableLocalLogin

Specifies if this client can use local accounts, or external IdPs only. Defaults to true.
IdentityProviderRestrictions

Specifies which external IdPs can be used with this client (if list is empty all IdPs are allowed). Defaults to empty.
UserSsoLifetime

The maximum duration (in seconds) since the last time the user authenticated. Defaults to null. You can adjust the lifetime of a session token to control when and how often a user is required to reenter credentials instead of being silently authenticated, when using a web application.
AllowedCorsOrigins

If specified, will be used by the default CORS policy service implementations (In-Memory and EF) to build a CORS policy for JavaScript clients.
CoordinateLifetimeWithUserSession (added in v6.1)

When enabled, the client’s token lifetimes (e.g. refresh tokens) will be tied to the user’s session lifetime. This means when the user logs out, any revokable tokens will be removed. If using server-side sessions, expired sessions will also remove any revokable tokens, and backchannel logout will be triggered. This client’s setting overrides the global CoordinateTokensWithUserSession configuration setting.

Token

IdentityTokenLifetime

Lifetime to identity token in seconds (defaults to 300 seconds / 5 minutes)
AllowedIdentityTokenSigningAlgorithms

List of allowed signing algorithms for identity token. If empty, will use the server default signing algorithm.
AccessTokenLifetime

Lifetime of access token in seconds (defaults to 3600 seconds / 1 hour)
AuthorizationCodeLifetime

Lifetime of authorization code in seconds (defaults to 300 seconds / 5 minutes)
AccessTokenType

Specifies whether the access token is a reference token or a self contained JWT token (defaults to Jwt).
IncludeJwtId

Specifies whether JWT access tokens should have an embedded unique ID (via the jti claim). Defaults to true.
Claims

Allows settings claims for the client (will be included in the access token).
AlwaysSendClientClaims

If set, the client claims will be sent for every flow. If not, only for client credentials flow (default is false)
AlwaysIncludeUserClaimsInIdToken

When requesting both an id token and access token, should the user claims always be added to the id token instead of requiring the client to use the userinfo endpoint. Default is false.
ClientClaimsPrefix

If set, the prefix client claim types will be prefixed with. Defaults to client_. The intent is to make sure they don’t accidentally collide with user claims.
PairWiseSubjectSalt Salt value used in pair-wise subjectId generation for users of this client. Currently not implemented.

Refresh Token

AbsoluteRefreshTokenLifetime

Maximum lifetime of a refresh token in seconds. Defaults to 2592000 seconds / 30 days
SlidingRefreshTokenLifetime

Sliding lifetime of a refresh token in seconds. Defaults to 1296000 seconds / 15 days
RefreshTokenUsage
- ReUse
  
  the refresh token handle will stay the same when refreshing tokens
- OneTime
  
  the refresh token handle will be updated when refreshing tokens. This is the default.
RefreshTokenExpiration
- Absolute
  
  the refresh token will expire on a fixed point in time (specified by the AbsoluteRefreshTokenLifetime). This is the default.
- Sliding
  
  when refreshing the token, the lifetime of the refresh token will be renewed (by the amount specified in SlidingRefreshTokenLifetime). The lifetime will not exceed AbsoluteRefreshTokenLifetime.
UpdateAccessTokenClaimsOnRefresh

Gets or sets a value indicating whether the access token (and its claims) should be updated on a refresh token request.

Consent screen specific settings.

RequireConsent

Specifies whether a consent screen is required. Defaults to false.
AllowRememberConsent

Specifies whether user can choose to store consent decisions. Defaults to true.
ConsentLifetime

Lifetime of a user consent in seconds. Defaults to null (no expiration).
ClientName

Client display name (used for logging and consent screen).
ClientUri

URI to further information about client.
LogoUri

URI to client logo.

Cross Device Flows

Settings used in the CIBA and OAuth device flows.

PollingInterval

Maximum polling interval for the client in cross device flows. If the client polls more frequently than the polling interval during those flows, it will receive a slow_down error response. Defaults to null, which means the throttling will use the global default appropriate for the flow (IdentityServerOptions.Ciba.DefaultPollingInterval or IdentityServerOptions.DeviceFlow.Interval).

Device Flow

Device flow specific settings.

UserCodeType

Specifies the type of user code to use for the client. Otherwise falls back to default.
DeviceCodeLifetime

Lifetime to device code in seconds (defaults to 300 seconds / 5 minutes)

CIBA

Client initiated backchannel authentication specific settings.

CibaLifetime

Specifies the backchannel authentication request lifetime in seconds. Defaults to null.

DPoP

Added in 6.3.0.

Settings specific to the Demonstration of Proof-of-Possession at the Application Layer (DPoP) feature.

RequireDPoP

Specifies whether a DPoP (Demonstrating Proof-of-Possession) token is requied to be used by this client. Defaults to false.
DPoPValidationMode

Enum setting to control validation for the DPoP proof token expiration. This supports both the client generated ‘iat’ value and/or the server generated ’nonce’ value. Defaults to DPoPTokenExpirationValidationMode.Iat, which only validates the ‘iat’ value.
DPoPClockSkew

Clock skew used in validating the client’s DPoP proof token ‘iat’ claim value. Defaults to 5 minutes.