twisted.names.dns.Record_SRV

class documentation

class Record_SRV(tputil.FancyEqMixin, tputil.FancyStrMixin): (source)

Implements interfaces: twisted.names.dns.IEncodableRecord

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The location of the server(s) for a specific protocol and domain.

This is an experimental record type.

See Also
http://www.faqs.org/rfcs/rfc2782.html
Method __hash__ Undocumented
Method __init__
Method decode Reconstruct an object from data read from the given file object.
Method encode Write a representation of this object to the given file object.
Class Variable compare​Attributes Undocumented
Class Variable fancybasename Undocumented
Class Variable show​Attributes Undocumented
Instance Variable port The port on this target host of this service.
Instance Variable priority The priority of this target host. A client MUST attempt to contact the target host with the lowest-numbered priority it can reach; target hosts with the same priority SHOULD be tried in an order defined by the weight field.
Instance Variable target The domain name of the target host. There MUST be one or more address records for this name, the name MUST NOT be an alias (in the sense of RFC 1034 or RFC 2181). Implementors are urged, but not required, to return the address record(s) in the Additional Data section. Unless and until permitted by future standards action, name compression is not to be used for this field.
Instance Variable ttl The maximum number of seconds which this record should be cached.
Instance Variable weight Specifies a relative weight for entries with the same priority. Larger weights SHOULD be given a proportionately higher probability of being selected.

Inherited from FancyEqMixin:

Method __eq__ Undocumented
Method __ne__ Undocumented

Inherited from FancyStrMixin:

Method __str__ Undocumented
def __hash__(self): (source)

Undocumented

def __init__(self, priority=0, weight=0, port=0, target=b'', ttl=None): (source)
Parameters
priorityUndocumented
weightUndocumented
portUndocumented
target:bytes or strSee Record_SRV.target
ttlUndocumented
def decode(self, strio, length=None): (source)
from twisted.names.dns.IEncodable
Reconstruct an object from data read from the given file object.
Parameters
strio:File-like objectA seekable buffer from which bytes may be read.
length:int or NoneThe 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.
def encode(self, strio, compDict=None): (source)
from twisted.names.dns.IEncodable
Write a representation of this object to the given file object.
Parameters
strio:File-like objectThe buffer to write to. It must have a tell() method.
comp​Dict:dict of bytes to int r NoneA 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.
compareAttributes: tuple[str, ...] = (source)
overrides twisted.python.util.FancyEqMixin.compareAttributes

Undocumented

fancybasename: str = (source)

Undocumented

showAttributes: tuple = (source)
overrides twisted.python.util.FancyStrMixin.showAttributes

Undocumented

port: int = (source)
The port on this target host of this service.
priority: int = (source)
The priority of this target host. A client MUST attempt to contact the target host with the lowest-numbered priority it can reach; target hosts with the same priority SHOULD be tried in an order defined by the weight field.
target: Name = (source)
The domain name of the target host. There MUST be one or more address records for this name, the name MUST NOT be an alias (in the sense of RFC 1034 or RFC 2181). Implementors are urged, but not required, to return the address record(s) in the Additional Data section. Unless and until permitted by future standards action, name compression is not to be used for this field.
ttl: int = (source)
The maximum number of seconds which this record should be cached.
weight: int = (source)
Specifies a relative weight for entries with the same priority. Larger weights SHOULD be given a proportionately higher probability of being selected.