Function _check_status

dns/query.py:659–673

(headers: dns.quic.Headers, peer: str, wire: bytes)

def _check_status(headers: dns.quic.Headers, peer: str, wire: bytes) -> None:
    value = _find_header(headers, b":status")
    if value is None:
        raise SyntaxError("no :status header in response")
    status = int(value)
    if status < 0:
        raise SyntaxError("status is negative")
    if status < 200 or status > 299:
        error = ""
        if len(wire) > 0:
            try:
                error = ": " + wire.decode()
            except Exception:
                pass
        raise ValueError(f"{peer} responded with status code {status}{error}")


def _http3(