Function _try_fetch

tests/_cli/test_cli.py:111–135

(
    port: int, host: str = "localhost", token: str | None = None
)

def _try_fetch(
    port: int, host: str = "localhost", token: str | None = None
) -> bytes | None:
    import http.cookiejar

    err: Exception | None = None
    for _ in range(20):
        try:
            url = f"http://{host}:{port}"
            if token is not None:
                url = f"{url}?access_token={token}"
            # The server 303-redirects `/?access_token=...` to strip the
            # token from the URL, attaching the session cookie to the
            # redirect. Use a cookie-aware opener so the follow-up request
            # carries that cookie and lands on the authenticated page
            # instead of the login screen.
            opener = urllib.request.build_opener(
                urllib.request.HTTPCookieProcessor(http.cookiejar.CookieJar())
            )
            return opener.open(url).read()
        except Exception as e:
            err = e
            time.sleep(0.6)
    print(f"Failed to fetch contents: {err}")
    return None


def _check_started(port: int, host: str = "localhost") -> bytes | None: