cf_speedtest is an unofficial, cross-platform, command-line internet speed test tool, powered by https://speed.cloudflare.com. cf_speedtest leverages Cloudflare's own Speedtest API, it can achieve much higher speeds than other tools. Here is an example of cf_speedtest running on an AWS m5zn.6xlarge instance (advertised as 50Gbit capable):
$ cargo install cf_speedtest$ cf_speedtest
- Use rustls instead of ureq for download tests, to avoid TLS decryption cost
- Support for proxies (HTTP/SOCKS5)
- Option to output results to CSV file
- This tool works entirely over HTTPS, which has some overhead
- This tool is completely unofficial, Cloudflare can block this tool at any time if they wanted to (I suspect they won't, because they chill like that)