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116 lines
3.9 KiB
116 lines
3.9 KiB
import json
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import os.path
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import socket
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import socketserver
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import threading
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from contextlib import closing, contextmanager
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from http.server import SimpleHTTPRequestHandler
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from typing import Callable, Generator
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from urllib.request import urlopen
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import h11
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@contextmanager
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def socket_server(
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handler: Callable[..., socketserver.BaseRequestHandler]
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) -> Generator[socketserver.TCPServer, None, None]:
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httpd = socketserver.TCPServer(("127.0.0.1", 0), handler)
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thread = threading.Thread(
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target=httpd.serve_forever, kwargs={"poll_interval": 0.01}
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)
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thread.daemon = True
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try:
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thread.start()
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yield httpd
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finally:
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httpd.shutdown()
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test_file_path = os.path.join(os.path.dirname(__file__), "data/test-file")
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with open(test_file_path, "rb") as f:
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test_file_data = f.read()
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class SingleMindedRequestHandler(SimpleHTTPRequestHandler):
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def translate_path(self, path: str) -> str:
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return test_file_path
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def test_h11_as_client() -> None:
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with socket_server(SingleMindedRequestHandler) as httpd:
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with closing(socket.create_connection(httpd.server_address)) as s:
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c = h11.Connection(h11.CLIENT)
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s.sendall(
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c.send( # type: ignore[arg-type]
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h11.Request(
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method="GET", target="/foo", headers=[("Host", "localhost")]
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)
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)
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)
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s.sendall(c.send(h11.EndOfMessage())) # type: ignore[arg-type]
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data = bytearray()
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while True:
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event = c.next_event()
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print(event)
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if event is h11.NEED_DATA:
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# Use a small read buffer to make things more challenging
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# and exercise more paths :-)
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c.receive_data(s.recv(10))
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continue
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if type(event) is h11.Response:
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assert event.status_code == 200
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if type(event) is h11.Data:
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data += event.data
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if type(event) is h11.EndOfMessage:
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break
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assert bytes(data) == test_file_data
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class H11RequestHandler(socketserver.BaseRequestHandler):
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def handle(self) -> None:
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with closing(self.request) as s:
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c = h11.Connection(h11.SERVER)
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request = None
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while True:
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event = c.next_event()
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if event is h11.NEED_DATA:
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# Use a small read buffer to make things more challenging
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# and exercise more paths :-)
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c.receive_data(s.recv(10))
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continue
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if type(event) is h11.Request:
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request = event
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if type(event) is h11.EndOfMessage:
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break
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assert request is not None
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info = json.dumps(
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{
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"method": request.method.decode("ascii"),
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"target": request.target.decode("ascii"),
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"headers": {
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name.decode("ascii"): value.decode("ascii")
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for (name, value) in request.headers
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},
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}
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)
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s.sendall(c.send(h11.Response(status_code=200, headers=[]))) # type: ignore[arg-type]
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s.sendall(c.send(h11.Data(data=info.encode("ascii"))))
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s.sendall(c.send(h11.EndOfMessage()))
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def test_h11_as_server() -> None:
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with socket_server(H11RequestHandler) as httpd:
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host, port = httpd.server_address
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url = "http://{}:{}/some-path".format(host, port)
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with closing(urlopen(url)) as f:
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assert f.getcode() == 200
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data = f.read()
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info = json.loads(data.decode("ascii"))
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print(info)
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assert info["method"] == "GET"
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assert info["target"] == "/some-path"
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assert "urllib" in info["headers"]["user-agent"]
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