HTTPRoute CORS Management

[shivoy-pandey]

By when can we expect the HTTPRoutes to manage CORS Functionality with the ALB Gateway? Currently if I do the development of frontend in localhost, I have to manage cors to connect with Backend APIs. I believe the CORS are not being currently implemented and support as part of the tool.

Please help us expedite this! Thanks!

[zac-nixon]

This is supported using Listener Attributes, see the ALB documentation:
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/header-modification.html

and https://kubernetes-sigs.github.io/aws-load-balancer-controller/latest/guide/gateway/loadbalancerconfig/#listenerattributes

We can't utilize the native Gateway API constructs because of a mismatch between the Gateway API and AWS ALB. Gateway API puts CORS rules on the individual route rule, while AWS ALB puts the CORS rules at the listener level.