Expose max_buffered_{rx/tx}_bytes in the Tap filter

[sadieleob]

Gloo Edge Product

Enterprise

Gloo Edge Version

1.17

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

This is not related to an issue.

Describe the solution you'd like

The customer is asking to expose:

• max_buffered_rx_bytes
• max_buffered_tx_bytes
• streaming
• record_headers_received_time
• record_downstream_connection

The customer stated that without the max_buffered_<rx/tx>_bytes fields set, the maximum body size is 1KiB that can be sent to the tap filter. Unfortunately, this max body size blocks our integration of the tap filter with their "in-house monetization" project since it requires payloads up to 4KB.

For the streaming field, this is not as important, but they would like to have this available in case buffering causes Envoy performance issues.

https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/tap/v3/common.proto#config-tap-v3-outputconfig
https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/tap/v3/tap.proto#extensions-filters-http-tap-v3-tap

Describe alternatives you've considered

There are no alternatives

Additional Context

No response

[soloio-bot]

Zendesk ticket #3974 has been linked to this issue.

[nfuden]

https://github.com/solo-io/solo-projects/issues/5455 encompasses this as well. @DuncanDoyle