We are experiencing an issue with our service when deployed to Railway, where SSE (Server-Sent Events) connections encounter a failure after running for 5 minutes and 0 seconds. The specific error observed is as follows:
curl: (92) HTTP/2 stream 1 was not closed cleanly: INTERNAL_ERROR (err 2)

Details:

• Environment:

• Deployment works as expected on AWS Lightsail, where SSE connections remain stable.

• The issue occurs consistently on Railway, suggesting an environment-specific problem.

• Symptoms:

• Events are received successfully for 5 minutes.

• After 5 minutes, the connection terminates with the above error.

• What We Tried:

• Deployed the service on AWS Lightsail for verification. SSE works perfectly without termination.

• Tested on Railway but encountered the same behavior on Railway.