envoyproxy/envoy

wasm: support cluster network filters

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#13,929 opened on Nov 6, 2020

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area/wasmhelp wanted

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Description

It appears that Wasm does not support network filters on upstream clusters. This is a feature request to provide support.

cc @PiotrSikora @mandarjog @gargnupur

Contributor guide

Research direction
Understand how Envoy implements cluster network filters (e.g., TCP proxy filter) and how the Wasm extension currently handles network filters for listeners. Identify the missing interface for upstream clusters and propose a design to extend the Wasm filter to support cluster network filters by adapting the existing listener filter model.
Tech stack
wasmcpp
Domain
networking
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++Envoy proxy architectureWebAssembly (Wasm)
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40