| name | xfr |
| description | Use this skill when the user wants to test network bandwidth, benchmark connections, compare network performance results, or measure throughput with a live TUI. |
Xfr Plugin
A modern iperf3 alternative with a live TUI, multi-client server, and QUIC support. Built in Rust.
Commands
Server
xfr serve start — Start xfr server for bandwidth testing
Client Testing
xfr client test — Run bandwidth test to xfr server
Result Comparison
xfr diff compare — Compare two bandwidth test results
LAN Discovery
xfr discover find — Find xfr servers on LAN via mDNS
Usage Examples
Start server:
xfr serve
xfr serve -p 9000
xfr serve --tui
xfr serve --prometheus 9090
Run bandwidth test:
xfr 192.168.1.1
xfr 192.168.1.1 -t 30s -b 100M
xfr 192.168.1.1 -P 4 -R
xfr 192.168.1.1 -u -b 1G
xfr 192.168.1.1 --quic -P 4
Output formats:
xfr 192.168.1.1 --json -o results.json
xfr 192.168.1.1 --csv -o results.csv
Compare results:
xfr diff baseline.json current.json
xfr diff before.json after.json --threshold 5
Discover servers:
xfr discover
Installation
cargo install xfr
Or via package manager:
brew install lance0/tap/xfr
eget lance0/xfr
Key Features
- Live TUI with real-time throughput graphs
- Multi-client server (vs iperf3 single client)
- TCP, UDP, QUIC, and MPTCP support
- Parallel streams for bonded connections
- Multiple output formats (text, JSON, CSV)
- Result comparison with
xfr diff
- LAN discovery via mDNS
- Prometheus metrics export
- 11 built-in color themes
- Firewall-friendly single-port mode
