malformed authority error with HTTP2 and gRPC

[arthurlm]

I am running h2 as a service in k8s to process gRPC requests.

Some clients of my service (envoy HTTP proxy) got error responses du to invalid authority field:

[2021-03-18T10:54:07Z DEBUG h2::server] malformed headers: malformed authority (b"extension/k8s-namespace-arthurlm-test/auth-server"): invalid uri character 

I do not have any ability to change envoy behavior: it need to use HTTP2 + TLS + cannot change request headers and payload.
I agree this authority is a little bit unexpected...

Should we make this kind of Authority allowed ?
Is there any way to allow h2 processing the request even if Authority::parse failed ?

[nox]

Did you file an issue against the envoy HTTP proxy so they don't emit malformed authorities?

[nox]

Duplicate of #442

[arthurlm]

Unfortunately no 😞.

I have fork h2 and just show a log warn if authority field parsing fail.
See diff: master...arthurlm:master

I would be happy to merge this change in h2 but I do not know if this policy is the expected one by h2.

[nox]

I am not sure what you mean by "unfortunately no". Isn't Envoy a FOSS project? Personally I don't think a patch to allow completely malformed authorities should be accepted.

[nox]

Let's move this discussion to #442 please, as it is the same issue.