ASGI CLI

Call ASGI Python application from command line, just like CURL.

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Install

pip install -U asgi-cli

Usage

asgi-cli --help

usage: asgi_cli [-h] [-V] [--app-dir APP_DIR] [-X METHOD] [-H HEADER]
                [-d DATA | -F MULTIPART] [-I | -b | -p | -v]
                [--root-path ROOT_PATH] [-n NUMBER]
                app [url]

positional arguments:
  app                   an application module
  url                   a uniform resource locator or path (default /)

options:
  -h, --help            show this help message and exit
  -V, --version         show program's version number and exit
  --app-dir APP_DIR     look for APP in the specified directory, by adding this to the PYTHONPATH
  -X, --request METHOD  specify request method to use, e.g. POST (default GET)
  -H, --header HEADER   pass custom header line, e.g. -H='Accept: application/json'
  -d, --data DATA       request body data, e.g. '{"msg":"hello"}', 'msg=hello'
  -F, --form MULTIPART  specify HTTP multipart POST data, e.g. name=value or name=@file
  -I, --head            show status and headers only
  --root-path ROOT_PATH
                        set the ASGI 'root_path'
  -b, --benchmark       issue a number of requests through repeated iterations (reports
                        throughtput and average call time)
  -p, --profile         prints out a report of top 10 functions ordered by internal time, saves to
                        'stats.cprof' file
  -n NUMBER             a number of requests to issue (default 100K)
  -v, --verbose         make the operation more talkative

Examples

example.py:

START = {
    "type": "http.response.start",
    "status": 200,
    "headers": [
        (b"content-length", b"13"),
        (b"content-type", b"text/html; charset=utf-8"),
    ],
}

BODY1 = {"type": "http.response.body", "body": b"Hello"}
BODY2 = {"type": "http.response.body", "body": b", world!"}


async def app(scope, receive, send) -> None:
    await send(START)
    await send(BODY1)
    await send(BODY2)

Then run the examples:

asgi-cli example:app prints response body:

Hello, world!

asgi-cli -v example:app pretty prints scope and sent messages:

{'scope': {'asgi': {'spec_version': '2.1', 'version': '3.0'},
           'client': ('127.0.0.1', 49327),
           'headers': [(b'accept', b'*/*'),
                       (b'user-agent', b'asgi-cli/0.0.1'),
                       (b'host', b'127.0.0.1:8000')],
           'http_version': '1.1',
           'method': 'GET',
           'path': '/',
           'query_string': b'',
           'raw_path': b'/',
           'root_path': '',
           'scheme': 'http',
           'server': ('127.0.0.1', 8000),
           'type': 'http'}}
{'message': {'headers': [(b'content-length', b'13'),
                         (b'content-type', b'text/html; charset=utf-8')],
             'status': 200,
             'type': 'http.response.start'}}
{'message': {'body': b'Hello', 'type': 'http.response.body'}}
{'message': {'body': b', world!', 'type': 'http.response.body'}}

asgi-cli -b example:app shows execution stats (runs in 3 iterations, for each iteration displays requests per second and an average call time):

 #1 => 477.74K, 2.09μs
 #2 => 438.12K, 2.28μs
 #3 => 446.90K, 2.24μs