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KKRainbow
d55e63b88e
Overhaul the WASI guest data plane for throughput and add the host capabilities it relies on. The externally driven Tokio runtime now runs its timer pre-turn only when a tracked deadline has expired, and all WASI-reachable timers (STUN, port mapping, WebClient, UDP flow cleanup) go through the portable time facade so conditional timer driving cannot starve them. Data plane: - Move read/write deadlines onto TCP and UDP resources with one ABI setter per direction, reuse a single expiration timer per resource, and drop timeout arguments from the four hot data-plane submissions (ABI v3). Checked absolute instants treat unrepresentable finite timeouts as unbounded instead of panicking. - Batch host traffic: vectored TCP frame writes combine queued slices into one host operation, and reads request a bounded 64 KiB while retaining excess bytes in the stream buffer. - Complete TCP writes inside the guest with cancellation-safe writes, reporting the completed prefix before honoring cancellation or timeout so hosts never replay bytes. - Repoll smoltcp egress immediately on zero poll delay, enlarge virtual UDP receive queues to 128 KiB payload with 128 metadata slots, and bound UDP session receive buffers to 8 KiB plus one byte while keeping oversized-datagram detection. Host integration: - Add optional algorithm-neutral AEAD seal/open imports with the ring backend as fallback, and pin the ring AES-128-GCM wire vector so the Go host stays interoperable. - Forward instance events to hosts through one best-effort, synchronous, non-blocking import. - Add a repository-owned build entry point for the Go host artifact: Binaryen 131 at -O4 with cached, SHA-256-verified official archives.