Send HTTP request to unix socket with python's built-in http.client.HttpConnection class

python_http_client_connection_unix_socket.py

# tested on cpython v3.9.5

import http.client
import json
import pathlib
import socket


class _HttpConnectionUnixSocket(http.client.HTTPConnection):
    def __init__(self, path: pathlib.Path) -> None:
        self._path = path
        super().__init__(host="0.0.0.0")

    def connect(self) -> None:
        self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
        self.sock.connect(self._path.as_posix())


docker_api_connection = _HttpConnectionUnixSocket(pathlib.Path("/var/run/docker.sock"))
docker_api_connection.request(method="GET", url="/v1.24/info")
print(json.load(docker_api_connection.getresponse()))