Function _check_trusted_proxy

gunicorn/asgi/protocol.py:51–67

Check if peer address is in the trusted proxy list. Cached at connection start to avoid repeated IP parsing per request.

(peer_addr, allow_list, networks)

def _check_trusted_proxy(peer_addr, allow_list, networks):
    """Check if peer address is in the trusted proxy list.

    Cached at connection start to avoid repeated IP parsing per request.
    """
    if not isinstance(peer_addr, tuple):
        return False
    if '*' in allow_list:
        return True
    try:
        ip = ipaddress.ip_address(peer_addr[0])
    except ValueError:
        return False
    for network in networks:
        if ip in network:
            return True
    return False


# Cached response bytes for common cases