btop-style process termination, for local agents only. The signal is sent by
socktop itself through a direct sysinfo call — nothing is transmitted to the
agent, and the agent and connector have no kill capability at all.
Why local-only: the PIDs on screen are reported by the agent, and the signal is
sent with socktop's own OS privileges. A PID is therefore only meaningful, and
only safe to act on, when the agent lives on this machine; acting on a remote
agent's PIDs would signal whatever unrelated local process happened to share
that number. local::agent_is_local treats an address as local when it is
loopback or when an ephemeral bind succeeds (which only works for an address on
one of our own interfaces, so it also covers reaching our own agent by LAN IP),
requires every address a hostname resolves to to be local, and fails closed.
* `t` on the selected process, and `t` inside Process Details. One key for
both: `k` scrolls the thread table in the modal, so it could not be reused
there.
* The confirmation offers Terminate (focused first, so a reflexive Enter is
the safe one), Force kill, and Cancel. Keeping SIGKILL behind a second
button rather than a second keybinding means the destructive option has to
be chosen deliberately.
* The selection hint gained the key, but only for a local agent — advertising
a key that deliberately does nothing is worse than no hint. Same for the
details modal's help line.
The list is reconciled after a signal rather than left to the next poll. A
signalled PID goes on a watch list re-checked each metrics tick, because SIGTERM
is a request: the process is usually still alive at signal time, and its row
should go when it actually exits (or stay, if it ignores the signal). PIDs
confirmed gone are remembered briefly, since the agent serves Processes from a
1500ms cache and would otherwise hand back a pre-kill snapshot. A selection
whose process has left the list is dropped, and the details view closes for a
process that no longer exists — including when it dies on its own, which
previously flipped that modal to "Agent Update Required" because the wire cannot
distinguish "no such PID" from "endpoint unsupported".
Also fixes two pre-existing UI faults found on the way:
* The selection hint was sized from its full label including the process name
and skipped entirely when that exceeded the pane width — so it vanished
exactly when a long-named process was selected. The name is now the elastic
part, and widths are measured in columns rather than bytes.
* Confirmation and Info dialogs laid their content out over the whole modal
rect instead of the block's inner rect, putting the first line of text on
the border row, and fell into the catch-all 70%x50% sizing arm, so a
one-line question got half the screen. They now size to their content and
use the theme's colors like the connection-error modal does.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
* chore: dead-code sweep
- Delete socktop_connector/src/connector.rs: orphaned since 08f248c removed
'pub mod connector;' during the modularization refactor. Never compiled
(verified under default, wasm, and workspace feature combos) but shipped
in the crates.io tarball and contained an outdated copy of the TLS
verifier — a trap for anyone patching the pinning bug in the dead copy.
- Delete empty socktop/src/ws.rs, tracked editor backup ui/.modal.rs.backup,
and stray test_thiserror.rs at the repo root.
- Delete the two LEGACY #[allow(dead_code)] process input handlers; the
header-click render test now exercises the live _with_selection handler
instead (better coverage of the real path).
- Drop unused sysinfo dependency from the socktop client.
- Replace stale 'temporarily increased for testing' comment on
COMPRESSION_THRESHOLD (it already held the production value).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(connector): make certificate pinning real; disable Nagle
Security: with --verify-hostname off (the default), the old NoVerify
verifier accepted ANY server certificate — the CA loaded from --tls-ca
was never consulted, so the documented pinning was a no-op and the
connection was trivially MITM-able. Replace it with PinnedCertVerifier:
the presented end-entity cert must be byte-identical to a cert in the
--tls-ca file (any cert in a multi-cert PEM matches, supporting
rotation). Signature validation now uses the ring provider's full
algorithm set instead of a hardcoded 3-scheme list. Empty PEM files
fail fast instead of failing closed per-handshake.
The --verify-hostname path is unchanged (WebPki root-store validation).
Also: the third argument of connect_async_tls_with_config is
tungstenite's disable_nagle flag, not a verification toggle — we were
passing verify_hostname there, leaving Nagle ON for default users. Pass
true unconditionally, and disable Nagle on the plain ws:// path too;
socktop exchanges small request/response frames where Nagle only adds
latency.
Client now consumes the connector via a dual path+version dep so these
fixes are in local builds and CI before the crates.io publish (cargo
strips the path on publish). Connector version -> 1.51.0.
Verified E2E: agent A's cert connects to agent A; agent B's cert
against agent A fails the handshake (the rpi-worker-1 wrong-PEM
scenario); --verify-hostname against a 127.0.0.1 SAN still connects.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(agent): GPU worker thread, async journalctl, correctness + cache fixes
Lightweight:
- GPU collection moves to a dedicated worker thread that owns the gfxinfo
handle for the process lifetime. gfxinfo's active_gpu() runs a full NVML
init/teardown (~20ms, blocking) and we were paying it on the async
runtime for every collect — measured at ~80% of the agent's entire
active CPU on a GPU machine. The handle holds Rc<Nvml> (not Send), so a
thread + mpsc/oneshot channel pair confines it; a zero-total-VRAM reply
is treated as a dead session (driver reload) and re-probed.
- journalctl now runs via tokio::process instead of blocking one of the
two runtime workers for the duration of the subprocess.
- TtlCell (state.rs) replaces the four hand-rolled static TTL caches; a
cached negative result now counts as fresh, so hosts with no matching
temp sensor or GPU stop rescanning every request. Single lock+clone on
the GPU cache hit path (was two).
Correctness:
- Process/child CPU times are now microseconds as documented; they were
milliseconds, rendering 1000x too small next to (correct) thread times.
- Non-Linux per-process CPU%% clamps AFTER dividing by core count; a
4-cores-busy process on an 8-core box reported 12.5% instead of 50%.
- Journal timestamps are real RFC 3339 UTC plus an additive timestamp_us
field (sorting is now numeric); the old strings were Debug-formatted
SystemTime mangled by string replace.
- Partition detection uses /sys/block on Linux: whole-disk filesystems on
names like nvme0n1 or zram1 are no longer misclassified as partitions.
One shared parent_disk_name() replaces two inline copies.
- New sampled_at_ms on the metrics payload (additive) records when the
snapshot was actually collected, so clients can compute exact rates
across the agent's TTL cache.
Security/robustness:
- key.pem is created 0600 (was umask default 0644, world-readable) and
pre-1.51 keys are tightened on startup.
- Per-PID detail/journal caches now evict (60s max age, 64 entries max);
they previously grew without bound under PID-walking clients.
- The two per-PID ws handlers collapse into one generic helper.
- /proc/<pid>/stat parsing unified in one comm-safe module.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(tui): responsive input, request timeouts, poisoned-stream reconnect
R1 — input latency: the event loop drained input once per iteration, then
slept the whole metrics interval; keys and wheel events queued for up to
500ms (or the full interval at slower rates) and applied in bursts. The
input block is extracted to drain_input() and the tail sleep replaced by
a deadline wait in <=33ms poll slices that handles and repaints input the
moment it arrives. Verified: help modal opens <150ms into a 2000ms tick.
R2 — freeze-proofing: metrics/processes/disks requests had no timeout; a
half-dead connection left ws.next() pending forever and froze the TUI
with no way to quit (raw mode eats Ctrl+C as an unread key event). All
requests now carry a 5s budget.
C3 — desync: replies are matched to requests by order alone, so a timed-
out request's late reply would shift every subsequent reply off by one.
Any timeout now treats the stream as poisoned and goes through the
reconnect flow — a fresh stream is aligned by construction. The modal
endpoints additionally mark process details unsupported (flag resets on
modal close/selection change) so a detail-less agent doesn't cause a
reconnect loop. While disconnected the fetch path idles: recovery belongs
to the manual/auto retry paths instead of 5s-timeout hammering.
C7 — fit::truncate_middle_cols replaces util::truncate_middle: display-
width aware and char-boundary safe; the byte-slicing version panicked the
draw loop on non-ASCII device names.
Verified live: agent kill -9 mid-session -> error modal in <3s, q exits
while disconnected, r reconnects and resumes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* chore: version 1.51.0, path-dep the wasm examples, README notes
- socktop, socktop_agent, socktop_connector -> 1.51.0.
- socktop_wasm_test and zellij_socktop_plugin consume the in-repo
connector via path deps so wasm-feature API drift is caught at PR time
instead of after publish. Immediately proved out: the wasm requests
module needed the new sampled_at_ms field, invisible to native builds.
- zellij plugin gains the standalone [workspace] marker (it could not be
cargo-checked in-tree at all before). NOTE: its lib.rs has pre-existing
compile errors unrelated to the connector (static mut STATE conflicts
with register_plugin!, missing BTreeMap import) — needs its own rework,
out of scope here.
- README: sampled_at_ms in the example payload.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(review): restore Agent Update Required flow, command field, axis alignment
Fixes from Jason's hands-on verification of the branch:
1. Old-agent messaging regression (this branch): a detail-request timeout
went through the loud poison/reconnect flow, burying the ProcessDetails
modal's 'Agent Update Required' message under a connection-error modal.
Old agents IGNORE unknown messages (no late reply, no desync), so the
optional per-PID endpoints now use quiet_reconnect(): swap the stream
silently (still safe against merely-slow agents) and let the modal show
its message. Only a failed reconnect surfaces loudly. Verified against
a real v1.40.0 agent: message shows, session stays healthy.
2. Draw starvation (this branch): an agent that never answers get_metrics
put the loop in fetch->timeout->poison->restart cycles that never
reached the draw call — permanently blank TUI. The iteration now paints
before fetching, and a second consecutive metrics timeout trips a
circuit breaker: persistent 'Agent is not responding' error, recovery
left to the manual/30s retry paths. Verified against a 0.9-era agent.
3. Command & Details pane blank (pre-existing on master): the minimal-
refresh optimization dropped cmd/exe/cwd from the detail endpoint's
ProcessRefreshKind, so process.cmd() had nothing to return. Restored
with UpdateKind::OnlyIfNotSet — immutable values, read once per PID.
Regression test added; journal E2E re-verified (100 entries render).
4. Scatter-plot axis misalignment: Y labels used a fixed 4-char field from
the era when CPU times were 1000x too small; honest millisecond values
(e.g. 136114) blew through it. Labels now right-align to the widest
value per frame and X labels/titles share the dynamic padding.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* feat: journal access notice, 1.60.0, install script, changelog, riscv protoc fallback
- Journal pane now distinguishes 'no entries' from 'no journal access':
journalctl exits 0 with empty output when the agent's user simply can't
see the target's entries (demo mode / user-run agents), explaining
itself only on stderr. The agent forwards that hint as an additive
JournalResponse.notice and the client renders it with practical advice.
Verified E2E via a stub journalctl emulating the unprivileged case.
- Version 1.60.0 across all crates (1.51 would read fine, but the repo's
scheme is 1.40/1.50/…, and a literal 1.6.0 would sort BELOW 1.50.0 in
semver). All user-facing version strings already come from
CARGO_PKG_VERSION — a stale binary was the only way to see an old one.
- scripts/install.sh: build-from-source install/upgrade for the test
fleet (Linux + macOS). Detects in-repo checkouts, installs rustup when
missing, replaces a systemd socktop-agent service binary in place and
restarts it, requires system protoc on riscv64.
- build.rs (agent + connector): fall back to $PROTOC / PATH when
protoc-bin-vendored has no binary for the host (riscv64) — native SBC
builds previously panicked in the build script.
- CHANGELOG.md covering v1.50.0 -> 1.60.0.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* test: add notice field to cache test initializer
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix: untrack zellij plugin build dir; installer updates all PATH copies
- Remove zellij_socktop_plugin/target from git (3,577 files committed by
accident in bf6ac87): the root .gitignore anchors /target to the repo
root, so the standalone plugin's own build dir wasn't covered. Ignore
target/ at any depth (also fixes the pre-existing
'/socktop-wasm-test/target' entry, which pointed at a hyphenated path
that doesn't exist).
- install.sh now updates EVERY copy of socktop/socktop_agent on PATH,
not just $PREFIX: a stale 'cargo install' in ~/.cargo/bin shadows
/usr/local/bin on most PATHs, so an install could 'succeed' while
'socktop --version' kept reporting the old release. Extra copies that
can't be written are warned about, not fatal, and the script now
prints which binary is actually active on PATH at the end.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* feat(installer): manage the socktop-agent systemd service
Upgrade path (unit already present): NEVER touch the unit file — it is
the operator's config (SSL, tokens, ports live there as Environment=
lines). Only the binary at the unit's own ExecStart path is replaced,
then the service restarts. Flags/args preserved by construction.
Fresh path (no unit): full first-time setup mirroring the deb postinst
and the agent-service docs — create the socktop system user/group and
/var/lib/socktop, install docs/socktop-agent.service (ExecStart rewritten
to wherever this run installed the agent; embedded fallback for old
refs), daemon-reload, enable --now, and print how to turn on TLS/token.
Also: system-level operations get their own sudo decision (SYS_SUDO) —
previously they inherited the PREFIX sudo flag, so a writable --prefix
made the service section run groupadd/systemctl unprivileged and die.
No sudo at all now skips service management with a warning instead of
failing the install.
Both branches dry-run verified with stubbed systemctl/sudo.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(installer): don't bind fresh agent services onto occupied ports
The Orange Pi install put the new service straight into a crash-restart
loop: the unit's default --port 3000 collided with a Docker service
already publishing 3000 (Umami; Gitea and friends default there too).
Fresh installs now scan 3000/3001/3010/3231/3232 via ss and configure
the unit on the first free port, warning loudly when 3000 was taken and
printing the resulting ws:// URL. Upgrades still never touch the unit.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(agent): detect NVIDIA GPUs on distros without the unversioned NVML soname
On Debian and derivatives the NVIDIA driver ships only libnvidia-ml.so.1
(the unversioned symlink belongs to the dev package), and nvml-wrapper's
default init dlopens the unversioned name — so gfxinfo reported 'No GPU
found' on a fully functional RTX A2000 host while nvidia-smi worked
fine. Arch-family distros ship the symlink, which is why the desktop
never showed this.
The GPU worker now falls back to initializing NVML directly with the
versioned soname when gfxinfo's probe fails, collecting name/util/vram
through the same handle-caching path. nvml-wrapper was already in the
tree via gfxinfo — same version, no new build cost.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(agent): box the NVML handle variant (clippy large_enum_variant)
CI clippy runs with -D warnings; Nvml is a large struct next to the
16-byte Box<dyn Gpu> variant.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(installer): survive self-modification mid-run; sturdier unit detection
Root cause of the mixed-up second install on the A2000 host: when run
from the clone it manages, the script's own git checkout/merge REPLACES
scripts/install.sh while bash is still executing it. Bash reads scripts
lazily by byte offset, so it resumed parsing the NEW file at the OLD
offset and executed an arbitrary tail of it — observed as the fresh-
service path running on a host whose unit already existed: the port scan
saw the still-running old service on 3000 and silently wrote a new unit
on 3001, while enable --now on the already-active service changed
nothing until a manual daemon-reload.
Fix: the whole script now runs inside main(), invoked as
'main "$@"; exit $?' so bash parses everything up front and never
reads the file again after main returns (the exit lives in the same
parse unit — demonstrated necessary: with a bare 'main "$@"' ending,
bash still executed the swapped file's trailing content after main
returned).
Also: unit existence is now checked with 'systemctl cat' instead of
grepping the full list-unit-files output.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* docs(installer): use a durable ref in the usage example
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Three panes painted two independent pieces of text onto one row with nothing
reserving space between them, so below roughly 105 columns the right-hand piece
was simply drawn over the tail of the left one:
socktop — host: cachyos-gaming | 🔒✗ TLS | (a: about⏱ 500ms metrics | 2000ms
The width arithmetic used str::len(), a byte count, so the emoji in these strings
overstated their width and left orphaned glyphs at the right edge as well. The
process table had the same problem in a different form: it handed the layout
solver a fixed, over-constrained column set, so a narrow pane crushed the
percentage-sized Name column to nothing while fixed-width PID and Mem % kept
their full width — losing the one field that identifies a process.
Add ui::fit (measure in terminal columns, truncate on character boundaries, pick
the richest wording that fits) and give each pane a priority ladder:
- Header: drop the key hints, then the TLS/token badges, then the
"socktop — host:" prefix, then the metrics/procs words, and only then shorten
the hostname. Hostname and intervals are what survive longest.
- CPU pane: drop the "CPU Temp:" label, then the now:/avg: labels, then the
average, then the temperature's decimal, and the temperature itself last — a
thermal warning outranks a second decimal place.
- Process table: Name is unconditional; CPU %, then Mem, then PID, then Mem %
are added as the pane widens, so Mem % is the first to go and Name the last.
Also fixes sort-header clicks, which resolved against a Layout that omitted the
column spacing the Table renders with, so a click landed off by up to four
columns. Covered by a test that clicks each label where it is actually drawn.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Resolves all five open Dependabot alerts (GHSA-9f94-5g5w-gf6r,
GHSA-394x-vwmw-crm3, GHSA-hfpc-8r3f-gw53, GHSA-65p9-r9h6-22vj,
GHSA-vw5v-4f2q-w9xf) by moving aws-lc-sys from 0.33.0 to 0.42.0.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
* chore: update ratatui from 0.28 to 0.30
* style: cargo fmt
* fix: replace manual zero-guarded divisions with checked_div
* fix: collapse nested if into match guard
* style: cargo fmt
* bump crossterm and optimize various types, remove stale code.
* fix windows build
* only show parent level processes on main tui
This check in offers alpha support for per process metrics, you can view threads, process CPU usage over time, IO, memory, CPU time, parent process, command, uptime and journal entries. This is unfinished but all major functionality is available and I wanted to make it available to feedback and testing.
non functional update:
- refactor stream of consciousness into separate files.
- combine equivelent functions used in networking and wasm features.
- cleanups and version bumps.
Related to: Usage as a lib #8
1. feature gating of TLS and other features not supported with WASM.
2. updated documentation.
3. creation of AI slop WASM example for verification.
- socktop connector allows you to communicate with socktop agent directly from you code without needing to implement the agent API directly.
- will also be used for non tui implementation of "socktop collector" in the future.
- moved to rust 2024 to take advantage of some new features that helped with refactor.
- fixed everything that exploded with update.
- added rust docs for lib.
jason
dependabot[bot]