help.txt

Usage: autocannon [opts] URL

URL is any valid http or https url.
If the PORT environment variable is set, the URL can be a path. In that case 'http://localhost:$PORT/path' will be used as the URL.

Available options:

  -c/--connections NUM
        The number of concurrent connections to use. default: 10.
  -p/--pipelining NUM
        The number of pipelined requests to use. default: 1.
  -d/--duration SEC
        The number of seconds to run the autocannnon. default: 10.
  -a/--amount NUM
        The amount of requests to make before exiting the benchmark. If set, duration is ignored.
  -S/--socketPath
        A path to a Unix Domain Socket or a Windows Named Pipe. A URL is still required in order to send the correct Host header and path.
  -w/--workers
        Number of worker threads to use to fire requests.
  --on-port
        Start the command listed after -- on the command line. When it starts listening on a port,
        start sending requests to that port. A URL is still required in order to send requests to
        the correct path. The hostname can be omitted, `localhost` will be used by default.
  -m/--method METHOD
        The http method to use. default: 'GET'.
  -t/--timeout NUM
        The number of seconds before timing out and resetting a connection. default: 10
  -T/--title TITLE
        The title to place in the results for identification.
  -b/--body BODY
        The body of the request.
  -F/--form FORM
        Upload a form (multipart/form-data). The form options can be a JSON string like
        '{ "field 1": { "type": "text", "value": "a text value"}, "field 2": { "type": "file", "path": "path to the file" } }'
        or a path to a JSON file containing the form options.
        When uploading a file the default filename value can be overridden by using the corresponding option:
        '{ "field name": { "type": "file", "path": "path to the file", "options": { "filename": "myfilename" } } }'
        Passing the filepath to the form can be done by using the corresponding option:
        '{ "field name": { "type": "file", "path": "path to the file", "options": { "filepath": "/some/path/myfilename" } } }'
  -i/--input FILE
        The body of the request.
  -H/--headers K=V
        The request headers.
  -B/--bailout NUM
        The number of failures before initiating a bailout.
  -M/--maxConnectionRequests NUM
        The max number of requests to make per connection to the server.
  -O/--maxOverallRequests NUM
        The max number of requests to make overall to the server.
  -r/--connectionRate NUM
        The max number of requests to make per second from an individual connection.
  -R/--overallRate NUM
        The max number of requests to make per second from an all connections.
        connection rate will take precedence if both are set.
        NOTE: if using rate limiting and a very large rate is entered which cannot be met,
              Autocannon will do as many requests as possible per second. Also latency data will be corrected in order to
              compensate the effects of coordinated omission issue. If you are not familiar with the coordinated omission
              issue, you should probably read [this article](http://highscalability.com/blog/2015/10/5/your-load-generator-is-probably-lying-to-you-take-the-red-pi.html)
              or watch this [Gil Tene's talk](https://www.youtube.com/watch?v=lJ8ydIuPFeU) on the topic.
  -C/--ignoreCoordinatedOmission
        Ignore coordinated omission issue when requests should be sent at a fixed rate using 'connectionRate' or 'overallRate'.
        NOTE: it is not recommended to enable this option.
              When the request rate cannot be met because the server is too slow,
              many request latencies might be missing and Autocannon might report a misleading latency distribution.
  -D/--reconnectRate NUM
        Some number of requests to make before resetting a connections connection to the
        server.
  -n/--no-progress
        Don't render the progress bar. default: false.
  -l/--latency
        Print all the latency data. default: false.
  -I/--idReplacement
        Enable replacement of [<id>] with a randomly generated ID within the request body. default: false.
  -j/--json
        Print the output as newline delimited json. This will cause the progress bar and results not to be rendered. default: false.
  -f/--forever
        Run the benchmark forever. Efficiently restarts the benchmark on completion. default: false.
  -s/--servername
        Server name for the SNI (Server Name Indication) TLS extension. Defaults to the hostname of the URL when it is not an IP address.
  -x/--excludeErrorStats
        Exclude error statistics (non 2xx http responses) from the final latency and bytes per second averages. default: false.
  -E/--expectBody EXPECTED
        Ensure the body matches this value. If enabled, mismatches count towards bailout.
        Enabling this option will slow down the load testing.
  --debug
        Print connection errors to stderr.
  -v/--version
        Print the version number.
  -h/--help
        Print this menu.