Part of twisted.names View Source
DNS protocol implementation.
Future Plans:
Function | randomSource | Wrapper around randbytes.secureRandom to return 2 random
chars. |
Interface | IRecord | An single entry in a zone of authority. |
Function | str2time | Parse a string description of an interval into an integer number of seconds. |
Function | readPrecisely | Undocumented |
Interface | IEncodable | Interface for something which can be encoded to and decoded from a file object. |
Class | Charstr | No class docstring; 3/7 methods documented |
Class | Name | A name in the domain name system, made up of multiple labels. For example, twistedmatrix.com. |
Class | Query | Represent a single DNS query. |
Class | RRHeader | A resource record header. |
Class | SimpleRecord | A Resource Record which consists of a single RFC 1035 domain-name. |
Class | Record_NS | An authoritative nameserver. |
Class | Record_MD | A mail destination. |
Class | Record_MF | A mail forwarder. |
Class | Record_CNAME | The canonical name for an alias. |
Class | Record_MB | A mailbox domain name. |
Class | Record_MG | A mail group member. |
Class | Record_MR | A mail rename domain name. |
Class | Record_PTR | A domain name pointer. |
Class | Record_DNAME | A non-terminal DNS name redirection. |
Class | Record_A | An IPv4 host address. |
Class | Record_SOA | Marks the start of a zone of authority. |
Class | Record_NULL | A null record. |
Class | Record_WKS | A well known service description. |
Class | Record_AAAA | An IPv6 host address. |
Class | Record_A6 | An IPv6 address. |
Class | Record_SRV | The location of the server(s) for a specific protocol and domain. |
Class | Record_NAPTR | The location of the server(s) for a specific protocol and domain. |
Class | Record_AFSDB | Map from a domain name to the name of an AFS cell database server. |
Class | Record_RP | The responsible person for a domain. |
Class | Record_HINFO | Host information. |
Class | Record_MINFO | Mailbox or mail list information. |
Class | Record_MX | Mail exchange. |
Class | Record_TXT | Freeform text. |
Class | UnknownRecord | Encapsulate the wire data for unknown record types so that they can pass through the system unchanged. |
Class | Record_SPF | Structurally, freeform text. Semantically, a policy definition, formatted as defined in rfc 4408. |
Class | Message | Message
contains all the information represented by a single DNS request or
response. |
Class | DNSMixin | DNS protocol mixin shared by UDP and TCP implementations. |
Class | DNSDatagramProtocol | DNS protocol over UDP. |
Class | DNSProtocol | DNS protocol over TCP. |
Function | _ord2bytes | Construct a bytes object representing a single byte with the given ordinal value. |
Function | _nicebytes | Represent a mostly textful bytes object in a way suitable for presentation to an end user. |
Function | _nicebyteslist | Represent a list of mostly textful bytes objects in a way suitable for presentation to an end user. |
Function | _nameToLabels | Split a domain name into its constituent labels. |
Function | _isSubdomainOf | Test whether descendantName is equal to or is a
subdomain of ancestorName . |
Class | _OPTHeader | An OPT record header. |
Class | _OPTVariableOption | A class to represent OPT record variable options. |
Returns | (type: bytes ) |
Parameters | bytes | The bytes to represent. |
Returns | (type: str ) |
Parameters | list | The list of bytes to represent. |
Returns | (type: str ) |
Parameters | name | A fully qualified domain name (with or without a trailing dot). (type: str ) |
Returns | A list
of labels ending with an empty label representing the DNS root zone. |
descendantName
is equal to or is a
subdomain of ancestorName
.
The names are compared case-insensitively.
The names are treated as byte strings containing one or more DNS labels separated by ..
descendantName
is considered equal if its sequence of
labels exactly matches the labels of ancestorName
.
descendantName
is considered a subdomain if its
sequence of labels ends with the labels of ancestorName
.
Parameters | descendantName | The DNS subdomain name. (type: bytes ) |
ancestorName | The DNS parent or ancestor domain name. (type: bytes ) | |
Returns | True if descendantName is equal to or if it is a
subdomain of ancestorName . Otherwise returns
False . |
Parameters | s | An interval definition constructed as an interval duration followed by an
interval unit. An interval duration is a base ten representation of an
integer. An interval unit is one of the following letters: S (seconds), M
(minutes), H (hours), D (days), W (weeks), or Y (years). For example:
"3S" indicates an interval of three seconds;
"5D" indicates an interval of five days.
Alternatively, s may be any non-string and it will be returned
unmodified. (type: text string (str ) for parsing; anything else for passthrough.) |
Returns | an int giving the interval represented by the string
s , or whatever s is if it is not a string. |