Encountering PRECONDITION_FAILED Error (Code 406) in RabbitMQ When Sending Large Messages

I'm working on a project where I need to send large messages through RabbitMQ. However, I'm encountering the following error:

I am using NestJs microservices

"err": {     "code": 406,     "classId": 60,     "methodId": 40   }

Context:

• RabbitMQ Version: [Specify your RabbitMQ version]

• Client Library: [Specify the client library and version you're using]

• Message Size: Approximately [specify size, e.g., 20 MB]

What I've Tried:

1. Adjusting Queue Arguments:

   • Set the x-max-length-bytes argument to 20971520 (20 MB) during queue declaration.

   • Verified that the queue is declared with the correct arguments.

2. Increasing frame_max:

   • Configured frame_max to a higher value in the RabbitMQ configuration to accommodate larger frames.

3. Client Configuration:

   • Ensured that the client settings (e.g., socketOptions in Node.js) are configured to handle larger message sizes.

Observations:

• Sending smaller messages works without any issues.

• The error occurs consistently with larger messages.

Questions:

1. Is there a maximum message size limit in RabbitMQ that I'm exceeding?

2. Are there additional configurations or best practices for handling large messages in RabbitMQ?

3. Could the PRECONDITION_FAILED error be related to other settings or misconfigurations?

Any insights or suggestions would be greatly appreciated. Thank you in advance!

I added rabbitmq.conf file with these configs:

max_message_size = 536870912
frame_max = 536870912

and it can now accept larger messages.