When working with SignalR which security precautions should you remember to take?

When working with SignalR which security precautions should you remember to take?

SignalR requires the following CORS policies:

• Allow the specific expected origins. Allowing any origin is possible but is not secure or recommended.
• HTTP methods GET and POST must be allowed.
• Credentials must be allowed in order for cookie-based sticky sessions to work correctly.

Does SignalR need SSL?

Even if your self-hosted SignalR application doesn’t explicitly require SSL, if the SignalR client is hosted inside of a Web page that’s running SSL you have to run SignalR under SSL, if you want it to work without browser error messages or failures under some browsers that will reject mixed content on SSL pages.

What is SignalR .NET core?

What is SignalR? ASP.NET Core SignalR is an open-source library that simplifies adding real-time web functionality to apps. Real-time web functionality enables server-side code to push content to clients instantly. Good candidates for SignalR: Apps that require high frequency updates from the server.

When should I use SignalR?

SignalR can be used to add any sort of “real-time” web functionality to your ASP.NET application. While chat is often used as an example, you can do a whole lot more. Any time a user refreshes a web page to see new data, or the page implements long polling to retrieve new data, it is a candidate for using SignalR.

Is SignalR a WebSocket?

SignalR. ASP.NET Core SignalR is a library that simplifies adding real-time web functionality to apps. It uses WebSockets whenever possible. For most applications, we recommend SignalR over raw WebSockets.

How many connections can SignalR handle?

Broadcast

Broadcast	Unit1	Unit50
Connections	1,000	50,000
App server count	2	2

What is SignalR used for?

What is difference between SignalR and WebSocket?

ASP.NET Core SignalR is a library that simplifies adding real-time web functionality to apps. It uses WebSockets whenever possible. For most applications, we recommend SignalR over raw WebSockets. And in most scenarios, SignalR has no significant performance disadvantage compared to using raw WebSockets.

What protocol does SignalR use?

SignalR takes advantage of WebSocket, an HTML5 API that enables bi-directional communication between the browser and server. SignalR will use WebSockets under the covers when it’s available, and gracefully fall back to other techniques and technologies when it isn’t, while the application code remains the same.

Is WebSocket a SignalR?

SignalR. ASP.NET Core SignalR is a library that simplifies adding real-time web functionality to apps. It uses WebSockets whenever possible. SignalR provides transport fallback for environments where WebSockets is not available.

Where do I find authentication data in SignalR?

In a hub, authentication data can be accessed from the HubConnectionContext.User property. Authentication allows the hub to call methods on all connections associated with a user. For more information, see Manage users and groups in SignalR. Multiple connections may be associated with a single user.

What do you need to know about SignalR security?

SignalR does not provide any features for authenticating users. Instead, you integrate the SignalR features into the existing authentication structure for an application. You authenticate users as you would normally in your application, and work with the results of the authentication in your SignalR code.

When to use Bearer Token Authentication in SignalR?

Bearer token authentication is the recommended approach when using clients other than the browser client. If Windows authentication is configured in your app, SignalR can use that identity to secure hubs. However, to send messages to individual users, you need to add a custom User ID provider.

When to call requireauthentication for SignalR hubs?

When RequireOutgoing is not set to false, only users that meet the authorization requirement are called from the server. You can require authentication for all hubs and hub methods in your application by calling the RequireAuthentication method when the application starts.