Origin to use in from_wire() calls.

The class of the transaction manager.

Returns an HMAC context for the specified key. @rtype: HMAC context @raises NotImplementedError: I{algorithm} is not supported

Return a consistent snapshot of all the statistics. If running with multiple threads, it's better to take a snapshot than to call sta

Insert the element into the BTree. If *in_order* is ``True``, then extra work will be done to make left siblings full, which optimize

Check if the Internet is reachable. Setting the environment variable `NO_INTERNET` will let this function always return False. The result is

Iterate all the names in the transaction. Note that as is usual with python iterators, adding or removing names while iterating will

Make a socket. This function uses the module's ``socket_factory`` to make a socket of the specified address family and type. *af*, a ``s

The greatest element in this subtree.

Merge this node's parent and its right sibling into this node.

Return the opcode. Returns a ``dns.opcode.Opcode``.

Returns a tuple (absolute_origin, relativize, effective_origin) giving the absolute name of the default origin for any r

Read a wire format DNS message and build a dns.message.Message object.

Read the specified number of bytes from stream. Keep trying until we either get the desired amount, or we hit EOF.

Read a DNS message from a TCP socket. *sock*, a ``socket``. *expiration*, a ``float`` or ``None``, the absolute time at which a timeout

Release the reserved bytes.

Replace the existing rdataset at the name with the specified rdataset, or add the specified rdataset if there was no existing rdataset

Replace records. The first argument is always a name. The other arguments can be: - rdataset... -

Use an asynchronous resolver to query for address records. This utilizes the resolve() method to perform A and/or AAAA lookups on the

A map from queried names to their NXDOMAIN responses. Returns a dict mapping a ``dns.name.Name`` to a ``dns.message.Message``.

Send a DNS message to the specified TCP socket. *sock*, a ``socket``. *what*, a ``bytes`` or ``dns.message.Message``, the message to send.

Set the pruning policy for the zone. The *policy* function takes a `Version` and returns `True` if the version should be pruned, and

Split a maximal node into two minimal ones and a central element.

Return the response obtained after sending a query via TCP. *sock*, a ``dns.asyncbacket.StreamSocket``, or ``None``, the socket to use for th

Return the response obtained after sending a query via TCP. *q*, a ``dns.message.Message``, the query to send *where*, a ``str`` containing

Return a zone's text as though it were written to a file. *sorted*, a ``bool``. If True, the default, then the file will be written

Convert various format to a timestamp

Try to steal from this Node's right sibling for balancing purposes. Returns ``True`` if the theft was successful, or ``False`` if not.

Configure EDNS behavior. *edns*, an ``int``, is the EDNS level to use. Specifying ``None``, ``False``, or ``-1`` means "do not use E

Call *visit* on all of the elements in order.

Two zones are equal if they have the same origin, class, and nodes. Returns a ``bool``.

Two messages are equal if they have the same content in the header, question, answer, and authority sections. Returns a ``bool``.

Initialize an rdata. *rdclass*, an ``int`` is the rdataclass of the Rdata. *rdtype*, an ``int`` is the rdatatype of the Rdata.

Initialize an inbound zone transfer. *txn_manager* is a :py:class:`dns.transaction.TransactionManager`. *rdtype* can be `dns.rdataty

Create a new rdataset of the specified class and type. *rdclass*, a ``dns.rdataclass.RdataClass``, the rdataclass. *rdtype*, an ``dn

Has this transaction changed anything?

Old exceptions supported only args and not kwargs. For sanity we do not allow to mix old and new behavior.

Compute the size required for the OPT RR, padding excluded

Compute the size required for the TSIG RR