dns-packet - npm Package Compare versions

Comparing version 1.0.2 to 1.1.0

example.js

@@ -9,2 +9,3 @@ var packet = require('./')
   id: 1,
+  flags: packet.RECURSION_DESIRED,
   questions: [{
@@ -11,0 +12,0 @@ type: 'A',

index.js

@@ -104,4 +104,7 @@ var types = require('./types')
 
+  var flags = (h.flags || 0) & 32767
+  var type = h.type === 'response' ? RESPONSE_FLAG : QUERY_FLAG
+
   buf.writeUInt16BE(h.id || 0, offset)
-  buf.writeUInt16BE(h.type === 'response' ? RESPONSE_FLAG : QUERY_FLAG, offset + 2)
+  buf.writeUInt16BE(flags | type, offset + 2)
   buf.writeUInt16BE(h.questions.length, offset + 4)
@@ -120,6 +123,8 @@ buf.writeUInt16BE(h.answers.length, offset + 6)
   if (buf.length < 12) throw new Error('Header must be 12 bytes')
+  var flags = buf.readUInt16BE(offset + 2)
 
   return {
     id: buf.readUInt16BE(offset),
-    type: buf.readUInt16BE(offset + 2) & RESPONSE_FLAG ? 'response' : 'query',
+    type: flags & RESPONSE_FLAG ? 'response' : 'query',
+    flags: flags & 32767,
     questions: new Array(buf.readUInt16BE(offset + 4)),
@@ -508,2 +513,9 @@ answers: new Array(buf.readUInt16BE(offset + 6)),
 
+exports.AUTHORITATIVE_ANSWER = 1 << 10
+exports.TRUNCATED_RESPONSE = 1 << 9
+exports.RECURSION_DESIRED = 1 << 8
+exports.RECURSION_AVAILABLE = 1 << 7
+exports.AUTHENTIC_DATA = 1 << 5
+exports.CHECKING_DISABLED = 1 << 4
+
 exports.encode = function (result, buf, offset) {
@@ -510,0 +522,0 @@ if (!buf) buf = Buffer(exports.encodingLength(result))

package.json

 {
   "name": "dns-packet",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "description": "An abstract-encoding compliant module for encoding / decoding DNS packets",
@@ -5,0 +5,0 @@ "repository": {

README.md

@@ -23,2 +23,3 @@ # dns-packet
   id: 1,
+  flags: packet.RECURSION_DESIRED,
   questions: [{
@@ -59,2 +60,3 @@ type: 'A',
   id: optionalIdNumber,
+  flags: optionalBitFlags,
   questions: [...],
@@ -67,2 +69,25 @@ answers: [...],
 
+The bit flags available are
+
+``` js
+packet.RECURSION_DESIRED
+packet.RECURSION_AVAILABLE
+packet.TRUNCATED_RESPONSE
+packet.AUTHORITATIVE_ANSWER
+packet.AUTHENTIC_DATA
+packet.CHECKING_DISABLED
+```
+
+To use more than one flag bitwise-or them together
+
+``` js
+var flags = packet.RECURSION_DESIRED | packet.RECURSION_AVAILABLE
+```
+
+And to check for a flag use bitwise-and
+
+``` js
+var isRecursive = message.flags & packet.RECURSION_DESIRED
+```
+
 A question looks like this
@@ -69,0 +94,0 @@

test.js

@@ -100,2 +100,3 @@ var tape = require('tape')
     type: 'response',
+    flags: packet.TRUNCATED_RESPONSE,
     answers: [{
@@ -122,2 +123,3 @@ type: 'A',
     id: 100,
+    flags: 0,
     additionals: [{
@@ -124,0 +126,0 @@ type: 'AAAA',

No alert changes

Improved metrics

Total package byte prevSize

25454

increased by3.71%

Lines of code

713

increased by1.86%

Number of lines in readme file

198

increased by14.45%

No dependency changes