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dns-txt
Advanced tools
Encode/decode DNS-SD TXT record RDATA fields
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Readme
Encode or decode the RDATA field in multicast DNS TXT records. For use with DNS-Based Service Discovery. For details see RFC 6763.
npm install dns-txt
var txt = require('dns-txt')()
var obj = {
foo: 1,
bar: 2
}
var enc = txt.encode(obj) // <Buffer 05 66 6f 6f 3d 31 05 62 61 72 3d 32>
txt.decode(enc) // { foo: '1', bar: '2' }
The encoder and decoder conforms to RFC 6763.
The module exposes a constructor function which can be called with an optional options object:
var txt = require('dns-txt')({ binary: true })
The options are:
binary
- If set to true
all values will be returned as Buffer
objects. The default behavior is to turn all values into strings. But
according to the RFC the values can be any binary data. If you expect
binary data, use this option.txt.encode(obj, [buffer], [offset])
Takes a key/value object and returns a buffer with the encoded TXT
record. If a buffer is passed as the second argument the object should
be encoded into that buffer. Otherwise a new buffer should be allocated
If an offset is passed as the third argument the object should be
encoded at that byte offset. The byte offset defaults to 0
.
This module does not actively validate the key/value pairs, but keep the following in rules in mind:
To be RFC compliant, each key should conform with the rules as specified in section 6.4.
To be RFC compliant, each value should conform with the rules as specified in section 6.5.
After encoding txt.encode.bytes
is set to the amount of bytes used to
encode the object.
txt.decode(buffer, [offset], [length])
Takes a buffer and returns a decoded key/value object. If an offset is
passed as the second argument the object should be decoded from that
byte offset. The byte offset defaults to 0
. Note that all keys will be
lowercased and all values will be Buffer objects.
After decoding txt.decode.bytes
is set to the amount of bytes used to
decode the object.
txt.encodingLength(obj)
Takes a single key/value object and returns the number of bytes that the given object would require if encoded.
MIT
FAQs
Encode/decode DNS-SD TXT record RDATA fields
The npm package dns-txt receives a total of 2,676,641 weekly downloads. As such, dns-txt popularity was classified as popular.
We found that dns-txt demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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