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The main reason for doing this is the ability to release ABI versions of each of the sub-components separately (although that might be partially addressed by #55). Note that this...

PiotrSikora

Currently, the ABI is enforced at linking time, which means that all hostcalls must be exported by the host. Theoretically, compilers should optimize away the unused hostcalls, but that hasn't...

PiotrSikora

Allow hosts to advertise features/settings at runtime

1

The ABI version currently enforces only the function signatures, but we have no way to change the meaning of various parameters, or negotiate settings at runtime.

PiotrSikora

Add async variants of proxy_{get,set}_shared_data

2

For consideration for the next ABI revision: The current `proxy_set_shared_data` and `proxy_get_shared_data` hostcalls are synchronous. If a host environment wants to provide a remote shared data store with higher latency,...

mpwarres

modify proxy_get_header_map_value ABI to support returning values from multiple occurrences of the header

2

The [proxy_get_header_map_value](https://github.com/envoyproxy/envoy/blob/788f26648d7ef73bd22b5ff6f343ac57fe923544/source/extensions/common/wasm/context.cc#L767-L768) hostcall currently only returns a single value, which doesn't accomodate headers that appear multiple times, such as [Set-Cookie](https://httpwg.org/specs/rfc6265.html#set-cookie). The next Proxy-Wasm ABI minor version should update `proxy_get_header_map_value` or...

mpwarres

does `proxy_add_header_map_value` host call add duplicate entries?

3

Hi :wave: I'm a security researcher working on auditing a project which uses a proxy-wasm plugin with Envoy to read and modify HTTP requests' headers before they reach an actual...

conduition

HTTP: support adding a body to a request or response that did not previously have one

1

(This issue is semi-related to #64 "HTTP: add control of the end_of_stream flag", arguably they could be coalesced) In its section on [Buffers](https://github.com/proxy-wasm/spec/tree/main/abi-versions/v0.2.1#buffers), the v0.2.1 ABI spec says: > Access...

mpwarres

Publish a Proxy-Wasm roadmap

2

Share in-flight efforts and outline the next high-priority features. This PR is a request for comment. Please tell us what's missing!

martijneken

A lot of the use cases I'm working on involve counting things; active requests, errors, values in HTTP headers. I have implemented concurrency-safe counters on top of the shared state...

dasch

Allow passing pre-allocated buffer to proxy_get_buffer_bytes

2

We've seen a common pattern emerging where plugin authors will call proxy_get_buffer_bytes with a specific length in mind, do something with the buffer, then clear all buffers when returning from...

leonm1