Kong golang custom plugin http2 & gRPC traffic mirroring

[Prasad502]

Hello ,
I have implemented a custom plugin in golang which is intended to mirror all the requests and responses and sent to a remote server. I am facing an issue with http2 & gRPC upstreams.

The request data is captured but while I receive the response from upstream server , the plugin is unable to mirror the response.

Below are the logs of kong docker. I am using the 3.8 version.

How do i solve this issue?

2024/11/02 15:12:35 [info] 2536#0: *638703 [kong] pb_rpc.lua:258 ------------- Request Data Captured --------------, client: 172.19.0.1
2024/11/02 15:12:35 [notice] 2536#0: *638703 [lua] init.lua:1358: access(): response buffering was turned off: incompatible HTTP version (2), client: 172.19.0.1
172.19.0.1 - - [02/Nov/2024:15:12:35 +0000] "POST /collector.CollectorProxy/CollectData HTTP/2.0" 200 7 "-" "grpc-node-js/1.8.13" kong_request_id: "ac4fc504fc716c65874e0b679b2aba73"

[gszr]

@Prasad502,

Thank you for reporting this issue!

In implementing your feature you probably used GetRawBody method, which relies on buffered proxying. Buffered proxying was unsupported for HTTP/2 requests up until Kong 3.9.0. If it was used in previous versions, you'd see the exact error message you reported. Could you retry with 3.9 and give us your feedback?

Closing this one for now, but please reopen it or create a new one.

Happy Konging! 🦍