Function parse_authority

mitmproxy/net/http/url.py:165–200

Extract the host and port from host header/authority information Raises: ValueError, if check is True and the authority information is malformed.

(authority: AnyStr, check: bool)

def parse_authority(authority: AnyStr, check: bool) -> tuple[str, int | None]:
    """Extract the host and port from host header/authority information

    Raises:
        ValueError, if check is True and the authority information is malformed.
    """
    try:
        if isinstance(authority, bytes):
            m = _authority_re.match(authority.decode("utf-8"))
            if not m:
                raise ValueError
            host = m["host"].encode("utf-8").decode("idna")
        else:
            m = _authority_re.match(authority)
            if not m:
                raise ValueError
            host = m.group("host")

        if host.startswith("[") and host.endswith("]"):
            host = host[1:-1]
        if not is_valid_host(host):
            raise ValueError

        if m.group("port"):
            port = int(m.group("port"))
            if not is_valid_port(port):
                raise ValueError
            return host, port
        else:
            return host, None

    except ValueError:
        if check:
            raise
        else:
            return always_str(authority, "utf-8", "surrogateescape"), None