example of cli usage

pure-parser-cli.js

@@ -6,8 +6,8 @@
 // pass a terminal arg
 var filename = process.argv[2];
 if (!filename) {
-  console.error("Usage: node aj-listener.js <type> [count]");
-  console.error("Example: node aj-listener.js _service 0");
+  console.error("Usage: node pure-parser-cli.js <path/to/sample.bin>");
+  console.error("Example: node pure-parser-cli.js ./samples/services-0.mdns.bin");
   process.exit(1);
 }
 
@@ -17,6 +17,17 @@ var fs = PromiseA.promisifyAll(require('fs'));
 var pdns = require('./pure-parser');
 
 fs.readFileAsync(filename, null).then(function (nb) {
+  //
+  // current reference impl
+  //
+  //console.log(require('native-dns-packet').parse(nb));
+
+
+  //
+  // other reference impl
+  //
+  console.log(require('dns-js').DNSPacket.parse(nb));
+
   // nb is a Uint8Array (ArrayBufferView) for nb.buffer
   // nb.buffer is the actual ArrayBuffer
   pdns.unpack(nb.buffer);

pure-parser.js

@@ -179,8 +179,11 @@ pdns.unpack = function (ab) {
 
     total += 2;
     // TODO actually parse rdata
-    q.rdata = new Uint8Array(ab).slice(ab.byteLength - total, ab.byteLength + -total + q.rdlength);
-    q.rdata = Array.prototype.slice(q.data);
+    console.log(ab.byteLength, ab.byteLength - total, ab.byteLength + -total + q.rdlength);
+    q.rdata = new Uint8Array(ab).slice(total, total + q.rdlength);
+    console.log('q.rdata', q.rdata.byteLength);
+    console.log(q.rdata);
+    q.rdata = Array.prototype.slice.apply(q.data);
     console.log('total', total);
 
     total += q.rdlength;