speedbump --latency=100ms --sine-amplitude=100ms --sine-period=1m --port=2000 localhost:80

speedbump --latency=300ms --saw-amplitude=200ms --saw-period=2m --port=2000 localhost:80

usage: speedbump [<flags>] <destination>

TCP proxy for simulating variable network latency.

Flags:
  --help              Show context-sensitive help (also try --help-long and --help-man).
  --port=8000         Port number to listen on.
  --buffer=64KB       Size of the buffer used for TCP reads.
  --queue-size=1024   Size of the delay queue storing read buffers.
  --latency=5ms       Base latency added to proxied traffic.
  --log-level=INFO    Log level. Possible values: DEBUG, TRACE, INFO, WARN, ERROR.
  --sine-amplitude=0  Amplitude of the latency sine wave.
  --sine-period=0     Period of the latency sine wave.
  --saw-amplitude=0   Amplitude of the latency sawtooth wave.
  --saw-period=0      Period of the latency sawtooth wave.
  --version           Show application version.

Args:
  <destination>  TCP proxy destination in host:post format.