Server connection problem on a blazor site

Question

Hi,

I have made this app in blazor:

Index

Occasionally, I encounter this error: "Attempting to connect to the server." Do you know how to solve it?

regards,

Saeed

Answer 1

This error is from Blazor server. the client code uses signal/r (a persistent connection) to talk to the server. The error means the signal/r connection was broken and the client code needs to reconnect. This could caused by either be a server recycle or crash, or unreliable internet connection (say mobile). Check your server logs.

another cause is if the tab hosting the blazor app is not the active tab for a period of time, then the browser will kill the connection.

Answer 2

Hi @Saeed Pooladzadeh,

This may happen after a period of inactivity for your application, it will show the message "Attempting to reconnect to server...".

If you are using blazor 7, 8 or previous version, I suggest you could consider upgrading the version to the 9.

According to this article, you could find:

• When the user navigates back to an app with a disconnected circuit, reconnection is attempted immediately rather than waiting for the duration of the next reconnect interval. This improves the user experience when navigating to an app in a browser tab that has gone to sleep.
• When a reconnection attempt reaches the server but the server has already released the circuit, a page refresh occurs automatically. This prevents the user from having to manually refresh the page if it's likely going to result in a successful reconnection.

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

 

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Best Regards,

Brando