Specify Http2 max header size?

[john.l...@gmail.com]

Hello,

Is there a way to configure an HTTP2 max header size that envoy should advertise to upstream peers?

Http/2 has a settings frame that may include the SETTINGS_MAX_HEADER_LIST_SIZE. If this value is set by a server, it is an indication to the client that they should not attempt to send a header larger than that max size or the server will throw an error. If the value is not explicitly declared by the server, then the client should feel free to send arbitrarily long headers.

I am dealing with a misbehaving client implementation that enforces an arbitrary default max header even when the server has not specified any limit. If I could have Envoy advertise a sufficiently large max header size, that would be an acceptable temporary workaround.

Looking for suggestions.

Thanks!
John

[Matt Klein]

This is not currently configurable but would be easy to make it so. I would go ahead and open an issue.

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Matt Klein

Software Engineer

mkl...@lyft.com

https://calendly.com/mattklein123

[John Lofgren]

Thanks! Done. https://github.com/envoyproxy/envoy/issues/2958