AuthorizeModule Class

Article
02/28/2013

.NET Framework 4

Applies authorization attributes from the Hub class to determine whether to allow clients to receive messages sent from the hub.

Inheritance Hierarchy

System.Object
Microsoft.AspNet.SignalR.Hubs.HubPipelineModule
Microsoft.AspNet.SignalR.Hubs.AuthorizeModule

Namespace: Microsoft.AspNet.SignalR.Hubs
Assembly: Microsoft.AspNet.SignalR.Core (in Microsoft.AspNet.SignalR.Core.dll)

Syntax

'Declaration
Public Class AuthorizeModule _
    Inherits HubPipelineModule
'Usage
Dim instance As AuthorizeModule

public class AuthorizeModule : HubPipelineModule

public ref class AuthorizeModule : public HubPipelineModule

type AuthorizeModule =  
    class 
        inherit HubPipelineModule 
    end

public class AuthorizeModule extends HubPipelineModule

The AuthorizeModule type exposes the following members.

Constructors

	Name	Description
	AuthorizeModule()
	AuthorizeModule(IAuthorizeHubConnection, IAuthorizeHubMethodInvocation)

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Methods

	Name	Description
	BuildAuthorizeConnect	Wraps a function to be called before a client subscribes to signals belonging to the hub described by the HubDescriptor. By default, the AuthorizeModule will look for attributes on the hub to help determine if the client is authorized to subscribe to method invocations for the described hub. The function returns true if the client is authorized to subscribe to client-side hub method invocations; false, otherwise. (Overrides HubPipelineModule.BuildAuthorizeConnect(Func<HubDescriptor, IRequest, Boolean>).)
	BuildConnect	Wraps a function that is called when a client connects to the HubDispatcher for each IHub the client connects to. By default, this results in the IHub 's OnConnected method being invoked. (Inherited from HubPipelineModule.)
	BuildDisconnect	Wraps a function that is called when a client disconnects from the HubDispatcher for each IHub the client was connected to. By default, this results in the IHub 's OnDisconnected method being invoked. (Inherited from HubPipelineModule.)
	BuildIncoming	Wraps a function that invokes a server-side hub method. Even if a client has not been authorized to connect to a hub, it will still be authorized to invoke server-side methods on that hub unless it is prevented in BuildIncoming(Func<IHubIncomingInvokerContext, Task<Object>>) by not executing the invoke parameter. (Overrides HubPipelineModule.BuildIncoming(Func<IHubIncomingInvokerContext, Task<Object>>).)
	BuildOutgoing	Wraps a function that invokes a client-side hub method. (Inherited from HubPipelineModule.)
	BuildReconnect	Wraps a function that is called when a client reconnects to the HubDispatcher for each IHub the client connects to. By default, this results in the IHub 's OnReconnected method being invoked. (Inherited from HubPipelineModule.)
	BuildRejoiningGroups	Wraps a function that determines which of the groups belonging to the hub described by the HubDescriptor the client should be allowed to rejoin. By default, clients that are reconnecting to the server will be removed from all groups they may have previously been a member of, because untrusted clients may claim to be a member of groups they were never authorized to join. (Inherited from HubPipelineModule.)
	Equals	(Inherited from Object.)
	Finalize	(Inherited from Object.)
	GetHashCode	(Inherited from Object.)
	GetType	(Inherited from Object.)
	MemberwiseClone	(Inherited from Object.)
	OnAfterConnect	This method is called after the connect components of any modules added later to the IHubPipeline are executed and after OnConnected() is executed, if at all. (Inherited from HubPipelineModule.)
	OnAfterDisconnect	This method is called after the disconnect components of any modules added later to the IHubPipeline are executed and after OnDisconnected() is executed, if at all. (Inherited from HubPipelineModule.)
	OnAfterIncoming	This method is called after the incoming components of any modules added later to the IHubPipeline and the server-side hub method have completed execution. (Inherited from HubPipelineModule.)
	OnAfterOutgoing	This method is called after the outgoing components of any modules added later to the IHubPipeline are executed. This does not mean that all the clients have received the hub method invocation, but it does indicate a hub invocation message has successfully been published to a message bus. (Inherited from HubPipelineModule.)
	OnAfterReconnect	This method is called after the reconnect components of any modules added later to the IHubPipeline are executed and after OnReconnected() is executed, if at all. (Inherited from HubPipelineModule.)
	OnBeforeAuthorizeConnect	This method is called before the AuthorizeConnect components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules will not run and the client will not be allowed to subscribe to client-side invocations of methods belonging to the hub defined by the HubDescriptor . (Inherited from HubPipelineModule.)
	OnBeforeConnect	This method is called before the connect components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules and the OnConnected() method will not be run. (Inherited from HubPipelineModule.)
	OnBeforeDisconnect	This method is called before the disconnect components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules and the OnDisconnected() method will not be run. (Inherited from HubPipelineModule.)
	OnBeforeIncoming	This method is called before the incoming components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules and the server-side hub method invocation will not be executed. Even if a client has not been authorized to connect to a hub, it will still be authorized to invoke server-side methods on that hub unless it is prevented in BuildIncoming(Func<IHubIncomingInvokerContext, Task<Object>>) by not executing the invoke parameter or prevented in OnBeforeIncoming(IHubIncomingInvokerContext) by returning false. (Inherited from HubPipelineModule.)
	OnBeforeOutgoing	This method is called before the outgoing components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules and the client-side hub method invocation(s) will not be executed. (Inherited from HubPipelineModule.)
	OnBeforeReconnect	This method is called before the reconnect components of any modules added later to the IHubPipeline are executed. If this returns false, then those later-added modules and the OnReconnected() method will not be run. (Inherited from HubPipelineModule.)
	OnIncomingError	This is called when an uncaught exception is thrown by a server-side hub method or the incoming component of a module added later to the IHubPipeline . Observing the exception using this method will not prevent it from bubbling up to other modules. (Inherited from HubPipelineModule.)
	ToString	(Inherited from Object.)

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Remarks

An AuthorizeModule instance is added to the IHubPipeline by default. Hub level attributes that implement IAuthorizeHubConnection such as AuthorizeAttribute are applied to determine whether to allow potential clients to receive messages sent from that hub using a HubContext or a HubConnectionContext. All applicable hub attributes must allow hub connection for the connection to be authorized. Hub and method level attributes that implement IAuthorizeHubMethodInvocation such as AuthorizeAttribute are applied to determine whether to allow callers to invoke hub methods. All applicable hub level and method level attributes must allow hub method invocation for the invocation to be authorized. Optionally, this module may be instantiated with IAuthorizeHubConnection and IAuthorizeHubMethodInvocation authorizers that will be applied globally to all hubs and hub methods.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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