A CLI tool to test how long it takes to establish an TCP connection to a specific address, with percentile support (e.g. p99).
npm install -g @discretetom/tcping# tcping --help
Usage: tcping [options] <host> [port]
Usage (HTTP mode): tcping -h [options] <url>
Options:
--help Show help [boolean]
--version Show version number [boolean]
-i, --interval [number] [default: 500]
-t, --timeout [number] [default: 3000]
-p, --port Port number. Not effective in HTTP mode.
[number] [default: 80]
-c, --count Number of requests to send. -1 for infinite.
[number] [default: -1]
-P, --percentile A list of percentile to display, separated by ",", e.g.
"95,99". [string] [default: ""]
-T, --timestamp Display timestamp in output. [boolean] [default: false]
-h, --http Use HTTP mode. [boolean] [default: false]
# tcping baidu.com 443
host: baidu.com, port: 443, count: Infinity
finish dns lookup, address: 39.156.66.10 family: IPv4
connected: 52.546ms
connected: 54.906ms
connected: 50.258ms
connected: 50.999ms
connected: 56.020ms
connected: 54.988ms
connected: 344.278ms
connected: 46.484ms
statistics:
sent: 8, received: 8, success rate: 100%
min: 46.484ms, max: 344.278ms, avg: 88.810ms
# tcping baidu.com 80 -P 95
host: baidu.com, port: 80, count: Infinity
finish dns lookup, address: 39.156.66.10 family: IPv4
connected: 10.422ms
connected: 7.141ms
connected: 8.139ms
connected: 8.767ms
connected: 10.574ms
connected: 8.519ms
connected: 8.372ms
connected: 7.644ms
connected: 8.428ms
connected: 8.558ms
connected: 18.181ms
connected: 9.103ms
statistics:
sent: 12, received: 12, success rate: 100.00%
min: 7.141ms, max: 18.181ms, avg: 9.487ms, p95: 18.181ms
# tcping -h https://baidu.com
HTTP mode, url: https://baidu.com, count: Infinity
get: 100.288ms, status: 302, length: 161
get: 25.267ms, status: 302, length: 161
get: 26.985ms, status: 302, length: 161
get: 24.540ms, status: 302, length: 161
get: 24.518ms, status: 302, length: 161
statistics:
sent: 5, received: 5, success rate: 100.00%
min: 24.518ms, max: 100.288ms, avg: 40.320ms