Allow configurable max_request_header_size

[ttn-nguyen42]

Community Note

• Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request. Searching for pre-existing feature requests helps us consolidate datapoints for identical requirements into a single place, thank you!
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for issue followers and do not help prioritize the request.
• If you are interested in working on this issue or have submitted a pull request, please leave a comment.

---

Is your feature request related to a problem? Please describe.

We have a multi-tenancy backend where identities and roles are embedded inside the request header. Default Envoy's HTTPConnectionManager header size is 60KB but we need a lot more than that. However, after tinkering with escape-hatch configurations with custom listeners and cluster, we couldn't figure out what was needed to make it work.

Feature Description

Allow configurable max_request_header_size (defined here) as part of the ServiceDefault or ProxyDefault manifest

Use Case(s)

Systems that use a lot of headers

Contributions

After tinkering with Consul for a bit, i found that command/connect/envoy/bootstrap_config.go contains the template for such listener. Happy to contribute if I can get a confirmation that that's where I should be editting though.