Issue
After requests are forwarded by a Layer 7 listener of Classic Load Balancer (CLB), specific parameters in the response headers of the backend servers are deleted.
Cause
CLB modifies the values of the Date, Server, X-Pad, and X-Accel-Redirect parameters in the response headers to implement session persistence.
Solution
You can use one of the following methods to resolve the issue:
Add a prefix to the custom header, such as xl-server or xl-date.
Use a Layer 4 listener, such as a TCP listener.
Applicable scope
CLB