Append s to end of data & increment offset

Unpack data at current offset according to fmt (from struct)

Unsigned Short

Send packet to nameserver and return response

Get specified bits from integer >>> bin(get_bits(0b0011100,2)) '0b1' >>> bin(get_bits(0b0011100,0,4)) '0b110

Decode label at current offset in buffer (following pointers to cached elements where necessary)

Encode label and store at end of buffer (compressing cached elements where needed) and store elements in 'names'

Set specified bits in integer >>> bin(set_bits(0,0b1010,0,4)) '0b1010' >>> bin(set_bits(0,0b1010,3,4)) '0b10

Diff records - recursively diff sections (sorting RRs)

Reset header q/a/auth/ar counts to match numver of records (normally done transparently)

Add answer(s) >>> q = DNSRecord.question("abc.com") >>> a = q.reply() >>> a.add_answer(*RR.fromZone(

Create skeleton reply packet >>> q = DNSRecord.question("abc.com") >>> a = q.reply() >>> a.add_answe

Unsigned Byte

Unsigned Long

Prepend name to label

Parse time spec with optional s/m/h/d/w suffix

Return bytes remaining

Gen len bytes at current offset (& increment offset)

Pack record into binary packet (recursively packs each section into buffer) >>> q = DNSRecord.question("abc.com"

Shortcut to create question >>> q = DNSRecord.question("www.google.com") >>> print(q) ;; ->>HEADER<<

Test for equality by diffing records

Create DNS label instance Label can be specified as: - a list/tuple of byte strings - a byte string

Format IPv6 address (from tuple of 16 bytes) compressing sequence of zero bytes to '::'. Ideally we would use the ipaddress module in

Parse IPv6 address. Ideally we would use the ipaddress module in Python3.3 but can't rely on having this. Does not handle d

Add additional records >>> q = DNSRecord.question("abc.com") >>> a = q.reply() >>> a.add_answer(*RR.

Add question(s) >>> q = DNSRecord() >>> q.add_question(DNSQuestion("abc.com"), ... D

Encode and store label with no compression (needed for RRSIG)

Formatted 'repr'-style representation of record (optionally with prefix and/or sorted RRs)