venv/lib/python3.11/site-packages/authlib/integrations/httpx_client/utils.py

from httpx import Request

HTTPX_CLIENT_KWARGS = [
    'headers', 'cookies', 'verify', 'cert', 'http1', 'http2',
    'proxies', 'timeout', 'follow_redirects', 'limits', 'max_redirects',
    'event_hooks', 'base_url', 'transport', 'app', 'trust_env',
]


def extract_client_kwargs(kwargs):
    client_kwargs = {}
    for k in HTTPX_CLIENT_KWARGS:
        if k in kwargs:
            client_kwargs[k] = kwargs.pop(k)
    return client_kwargs


def build_request(url, headers, body, initial_request: Request) -> Request:
    """Make sure that all the data from initial request is passed to the updated object"""
    updated_request = Request(
        method=initial_request.method,
        url=url,
        headers=headers,
        content=body
    )

    if hasattr(initial_request, 'extensions'):
        updated_request.extensions = initial_request.extensions

    return updated_request