Скачать или смотреть Struggling with Supabase Realtime Connections? Here's How to Resolve JWT Issues!

Discover effective solutions for fixing authentication errors in Supabase Realtime connections caused by custom JWTs.
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Struggling with Supabase Realtime Connections? Here's How to Resolve JWT Issues!

If you're working with Supabase and have opted for a custom authentication method with Auth0, you might run into issues when establishing a realtime connection using a custom JWT. This can be particularly frustrating since having your JWT work seamlessly is crucial for your application, especially when Row Level Security (RLS) policies are at play. In this post, we’ll delve into the core of the problem, offering you a systematic solution to overcome these authentication hurdles.

The Problem: Authentication Errors with Custom JWTs

To give you some context, when using a self-hosted Supabase with custom JWT tokens, there are configurations that could lead to authentication errors during the establishment of a realtime connection. Here’s a quick breakdown of the scenario you might be facing:

Self-hosted Supabase & Auth0: You’re using Auth0 to manage authentication instead of the default Supabase authentication system.

JWT Signing: You’re signing the Auth0 payload with your Supabase secret key and including this token in your request headers.

Attempting Real-time Subscriptions: You can query your database without any issues, but when you try to create a subscription with custom headers, you encounter an authentication error.

The Solution: Setting the Access Token Properly

The good news is that this issue can be fixed with a few adjustments. The key is to properly set the access token for the realtime client to use your custom JWT. Here's how:

Step-by-Step Guide to Fixing the Authentication Error

Modify your Client Creation Method:
You need to create the Supabase client as you normally would, but you'll add a line to set the custom JWT for the realtime client.

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Understanding the Implication:
By directly setting the accessToken in the realtime client, you ensure that your custom JWT is utilized for the connection instead of relying solely on the default headers.

Establish your Subscription:
After setting the access token, you can now create your subscription without the authentication errors you've experienced previously. Make sure you still maintain your other configurations for subscribing to changes, such as your target channel and event types.

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Conclusion

By following these steps and ensuring that your custom JWT is set appropriately for the Supabase realtime client, you should be able to enjoy the benefits of real-time notifications and RLS policies without any authentication hurdles. Always keep your environment secure and test thoroughly to ensure that your implementation meets your application’s needs.

If you have any further questions or run into other issues, feel free to reach out to the community or refer back to official Supabase documentation for more insights. Happy coding!