twisted.names.dns.RRHeader(tputil.FancyEqMixin)
class documentationtwisted.names.dns
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Implements interfaces: twisted.names.dns.IEncodable
A resource record header.
Class Variable | fmt | str specifying the byte format of an RR. |
Instance Variable | name | The name about which this reply contains information. |
Instance Variable | type | The query type of the original request. |
Instance Variable | cls | The query class of the original request. |
Instance Variable | ttl | The time-to-live for this record. |
Instance Variable | payload | An object that implements the IEncodable interface |
Instance Variable | auth | A bool indicating whether this RRHeader was parsed from an authoritative message. |
Class Variable | compareAttributes | Undocumented |
Class Variable | rdlength | Undocumented |
Class Variable | cachedResponse | Undocumented |
Method | __init__ | |
Method | encode | Write a representation of this object to the given file object. |
Method | decode | Reconstruct an object from data read from the given file object. |
Method | isAuthoritative | Undocumented |
Method | __str__ | Undocumented |
Inherited from FancyEqMixin:
Method | __eq__ | Undocumented |
Method | __ne__ | Undocumented |
Parameters | name | See RRHeader.name (type: bytes or str ) |
type | The query type. (type: int ) | |
cls | The query class. (type: int ) | |
ttl | Time to live for this record. This will be converted to an int . (type: int ) | |
payload | A Query Type specific data object. (type: An object implementing IEncodable ) | |
Raises | TypeError | if the ttl cannot be converted to an int . |
ValueError | if the ttl is negative. |
Write a representation of this object to the given file object.
Parameters | strio | The buffer to write to. It must have a tell() method. (type: File-like object) |
compDict | A mapping of names to byte offsets that have already been written to the buffer, which may be used for compression (see RFC 1035 section 4.1.4). When None , encode without compression. (type: dict of bytes to int r None ) |
Reconstruct an object from data read from the given file object.
Parameters | strio | A seekable buffer from which bytes may be read. (type: File-like object) |
length | The number of bytes in this RDATA field. Most implementations can ignore this value. Only in the case of records similar to TXT where the total length is in no way encoded in the data is it necessary. (type: int or None ) |