Development Update — May 20

The multiplexed-routing work gets serious about measurement. A new StreamMuxBandwidth RPC and a cli mux-bw command — with a live TUI dashboard — turn “route a flow over N disjoint paths” into measured throughput, queueing delay, and an idle baseline. The DialOptions grow disjoint-mux and intermediate-exclusion controls so the paths can be forced apart. Alongside, a round of hypervisor-UI fixes and a couple of router correctness fixes.

Skywire: Multiplexed Bandwidth — Measure the Disjoint Paths

If multiplexed routing is the headline capability, it needs to be measurable. Today builds the instrument.

2737 feat(visor): StreamMuxBandwidth gRPC RPC + cli mux-bw — a streaming RPC (and cli mux-bw command) that measures bandwidth across a multiplexed route set as it runs, streaming the numbers back live.

2746 feat(router): DisjointMux + ExcludeIntermediatePKs in DialOptions — DialOptions gain a DisjointMux mode and an ExcludeIntermediatePKs list, so the parallel routes can be constructed to avoid sharing intermediates — genuinely disjoint paths, not N routes that all funnel through the same middle hop. This is what makes multiplexing buy you redundancy and aggregate bandwidth rather than just N copies of the same bottleneck.

2748 feat(visor/cli): mux-bw idle-baseline phase + built-in queueing-delay output — mux-bw runs an idle-baseline phase first (what’s the latency with no load?) then reports queueing delay under load, so you can separate path latency from congestion. 2749 plumbs mux-bw --min-hops through DialPing into the router so the measurement honors a minimum hop count (force the overlay, don’t measure a direct shortcut).

2739 feat(cli/ping-mux-bw): bubbletea TUI dashboard for StreamMuxBandwidth — a live terminal dashboard renders the streamed bandwidth/delay numbers as they arrive. 2747 gives the ping commands human-readable defaults and built-in aggregation for both the tree-stream and mux-bw outputs.

2745 feat(visor): per-route teardown — decouple StopPing from PK-only + 2752 feat(visor): honor caller SetupTimeout in DialPing — teardown becomes per-route rather than all-routes-to-a-PK, and DialPing honors the caller’s setup timeout instead of a fixed budget. Both are the kind of plumbing the measurement surface needs to be precise.

Skywire: Ping-Tree — TUI on the gRPC Stream

2736 feat(cli/ping-tree): rewire TUI onto server-side gRPC streaming — the ping-tree TUI is rewired onto yesterday’s server-side streaming RPC, so the tree fills in live. 2738 restores the tree shape, full PKs, and the tpID column in the rendered view (and prints the final state after quit), and 2734 adds an NDJSON harness for cli visor ping tree-stream so the stream can be consumed by tooling, not just the TUI.

Skywire: Hypervisor UI

A cluster of UI fixes sharpen the hypervisor dashboard.

2744 feat(hv-ui): hypervisor list under PK, live online-time, ping/NAT tooltips — visors group under their hypervisor’s PK, online-time ticks live, and ping/NAT details surface as tooltips. 2742 restores the local-hypervisor ★ marker and keeps transient-offline visors visible (rather than vanishing on a blip), and 2743 drops the stale DMSG + Reachability tabs and fixes the terminal tab. 2740 fixes tab highlighting, the terminal iframe, and the hypervisor list on the Info view.

2741 chore(ui): npmrc + refreshed lockfile so make build-ui works on npm 11 — housekeeping so the UI builds cleanly under npm 11.

Skywire: Router / Skynet

• 2750 fix(router): blame intermediate not dst when id_reservation fails on a hop — when route-id reservation fails at an intermediate hop, the failure is now attributed to that intermediate, not to the destination — so route-finder and diagnostics point at the actual problem hop.
• 2751 fix(appnet): tryDirectPingDial shortcut bypassed MinHops constraint — a direct-dial fast path was skipping the MinHops constraint; now it respects it (no accidental 1-hop when the caller asked for an overlay path).
• 2735 fix(skynet-srv): half-close forwardRawTCP before close — drains buffered bytes — the raw-TCP forwarder half-closes before fully closing so buffered bytes drain instead of being truncated on teardown.