- MikroTik encodes CPU as 0x80 | percentage (high bit flag)
- Deserialize: mask with 0x7F and cap at 100
- Serialize: set high bit (0x80 | cpu) to match MikroTik format
- CSV now includes local_cpu_pct and remote_cpu_pct columns
- Both client and server write CPU to CSV
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
CPU usage feature:
- New cpu.rs module: background sampler thread, cross-platform (macOS + Linux)
- Status message byte 1 now carries CPU load (0-100%), matching MikroTik format
- Status format corrected: [type][cpu][00][00][seq:4 LE][bytes:4 LE]
- Client and server exchange CPU in every status message
- Display format: "cpu: 40%/12%" (local/remote), "!" warning if > 70%
- Both client and server show local + remote CPU per interval
- Syslog TEST_END could include CPU averages (future enhancement)
Removed btest-opensource submodule — we've fully reimplemented the protocol
with EC-SRP5 auth, multi-connection, IPv6, syslog, CSV, and CPU monitoring.
The original project is still credited in LICENSE and README.
58 tests, all passing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The state is now created in main.rs and passed into run_client, so
when --duration timeout cancels the future, the stats are still
accessible via shared_state.summary(). CSV and syslog now show
real speeds and byte counts.
Verified: TCP loopback shows 32 Gbps in CSV output.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
run_client and sub-functions now return (tx_bytes, rx_bytes, lost, intervals).
BandwidthState::record_interval() called in both TCP and UDP client status
loops. CSV and syslog TEST_END now show real speeds and byte counts.
Also raised client UDP TX error threshold from 1000 to 50000 with
adaptive backoff matching the server.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Client mode now emits TEST_START and TEST_END syslog events
- Client UDP TX threshold raised from 1000 to 50000 with adaptive backoff
(matching server behavior) — prevents premature TX death on macOS
- Updated all docs (README, user-guide, architecture, protocol, docker)
- Added results.csv to gitignore
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
IPv6 listener now requires explicit --listen6 flag (disabled by default).
TCP over IPv6 works fully. UDP over IPv6 has macOS kernel limitations
(ENOBUFS on send_to). On Linux, IPv6 UDP works fine.
Usage:
btest -s # IPv4 only (default)
btest -s --listen6 # IPv4 + IPv6 on ::
btest -s --listen6 ::1 # IPv4 + IPv6 on specific address
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Server now binds on both IPv4 (0.0.0.0) and IPv6 (::) by default.
Uses tokio::select! to accept from whichever listener has a connection.
New flags:
--listen <addr> IPv4 listen address (default: 0.0.0.0, "none" to disable)
--listen6 <addr> IPv6 listen address (default: ::, "none" to disable)
Examples:
btest -s # listen on both v4 and v6
btest -s --listen6 none # IPv4 only
btest -s --listen none # IPv6 only
btest -s --listen 192.168.1.1 # specific IPv4 address
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New features:
- --syslog <address:port> sends structured events to remote syslog (RFC 5424 UDP)
Events: AUTH_SUCCESS, AUTH_FAILURE, TEST_START, TEST_END, TEST_RESULT
- EC-SRP5 authentication for both client and server modes
- TCP multi-connection support (session tokens, all 3 directions)
Bug fixes since v0.2.0:
- EC-SRP5 server: fixed gamma parity (was 50% auth failure rate)
- EC-SRP5 server: use lift_x not redp1 for verification
- TCP send direction: server sends 12-byte status messages to client
- TCP both direction: TX loop injects status between data packets
- TCP data: send all zeros (no 0x07 header that MikroTik rejected)
- TCP disconnect detection: running flag set on EOF
- UDP multi-connection: unconnected socket accepts all source ports
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Rename package to btest-rs (Rust convention for reimplementations)
- MIT license matching the original btest-opensource license
- LICENSE explicitly credits Alex Samorukov's original work
- Comprehensive README with usage, performance numbers, and credits
- CLI --help references the original project
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Full reimplementation of the MikroTik Bandwidth Test protocol:
- Server mode: accepts connections from MikroTik devices on port 2000
- Client mode: connects to MikroTik btest servers
- TCP and UDP protocols with bidirectional support
- MD5 challenge-response authentication
- Dynamic speed adjustment (1.5x algorithm)
- Status exchange matching original C pselect() behavior
- Docker support with multi-stage build
Tested against MikroTik RouterOS achieving:
- 1.05 Gbps server RX (single connection)
- 530 Mbps client TCP download
- 840 Mbps client TCP upload
- 433 Mbps client UDP download
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
