4 files changed, 193 insertions, 0 deletions
diff --git a/testing/xpcshell/dns-packet/examples/doh.js b/testing/xpcshell/dns-packet/examples/doh.js
new file mode 100644
index 0000000000..37ef19fc35
--- /dev/null
+++ b/testing/xpcshell/dns-packet/examples/doh.js
@@ -0,0 +1,52 @@
+
+'use strict'
+
+/*
+ * Sample code to make DNS over HTTPS request using POST
+ * AUTHOR: Tom Pusateri <pusateri@bangj.com>
+ * DATE: March 17, 2018
+ * LICENSE: MIT
+ */
+
+const dnsPacket = require('..')
+const https = require('https')
+
+function getRandomInt (min, max) {
+  return Math.floor(Math.random() * (max - min + 1)) + min
+}
+
+const buf = dnsPacket.encode({
+  type: 'query',
+  id: getRandomInt(1, 65534),
+  flags: dnsPacket.RECURSION_DESIRED,
+  questions: [{
+    type: 'A',
+    name: 'google.com'
+  }]
+})
+
+const options = {
+  hostname: 'dns.google.com',
+  port: 443,
+  path: '/experimental',
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/dns-udpwireformat',
+    'Content-Length': Buffer.byteLength(buf)
+  }
+}
+
+const request = https.request(options, (response) => {
+  console.log('statusCode:', response.statusCode)
+  console.log('headers:', response.headers)
+
+  response.on('data', (d) => {
+    console.log(dnsPacket.decode(d))
+  })
+})
+
+request.on('error', (e) => {
+  console.error(e)
+})
+request.write(buf)
+request.end()
diff --git a/testing/xpcshell/dns-packet/examples/tcp.js b/testing/xpcshell/dns-packet/examples/tcp.js
new file mode 100644
index 0000000000..b25c2c41cb
--- /dev/null
+++ b/testing/xpcshell/dns-packet/examples/tcp.js
@@ -0,0 +1,52 @@
+'use strict'
+
+const dnsPacket = require('..')
+const net = require('net')
+
+var response = null
+var expectedLength = 0
+
+function getRandomInt (min, max) {
+  return Math.floor(Math.random() * (max - min + 1)) + min
+}
+
+const buf = dnsPacket.streamEncode({
+  type: 'query',
+  id: getRandomInt(1, 65534),
+  flags: dnsPacket.RECURSION_DESIRED,
+  questions: [{
+    type: 'A',
+    name: 'google.com'
+  }]
+})
+
+const client = new net.Socket()
+client.connect(53, '8.8.8.8', function () {
+  console.log('Connected')
+  client.write(buf)
+})
+
+client.on('data', function (data) {
+  console.log('Received response: %d bytes', data.byteLength)
+  if (response == null) {
+    if (data.byteLength > 1) {
+      const plen = data.readUInt16BE(0)
+      expectedLength = plen
+      if (plen < 12) {
+        throw new Error('below DNS minimum packet length')
+      }
+      response = Buffer.from(data)
+    }
+  } else {
+    response = Buffer.concat([response, data])
+  }
+
+  if (response.byteLength >= expectedLength) {
+    console.log(dnsPacket.streamDecode(response))
+    client.destroy()
+  }
+})
+
+client.on('close', function () {
+  console.log('Connection closed')
+})
diff --git a/testing/xpcshell/dns-packet/examples/tls.js b/testing/xpcshell/dns-packet/examples/tls.js
new file mode 100644
index 0000000000..694a4fecfa
--- /dev/null
+++ b/testing/xpcshell/dns-packet/examples/tls.js
@@ -0,0 +1,61 @@
+'use strict'
+
+const tls = require('tls')
+const dnsPacket = require('..')
+
+var response = null
+var expectedLength = 0
+
+function getRandomInt (min, max) {
+  return Math.floor(Math.random() * (max - min + 1)) + min
+}
+
+const buf = dnsPacket.streamEncode({
+  type: 'query',
+  id: getRandomInt(1, 65534),
+  flags: dnsPacket.RECURSION_DESIRED,
+  questions: [{
+    type: 'A',
+    name: 'google.com'
+  }]
+})
+
+const context = tls.createSecureContext({
+  secureProtocol: 'TLSv1_2_method'
+})
+
+const options = {
+  port: 853,
+  host: 'getdnsapi.net',
+  secureContext: context
+}
+
+const client = tls.connect(options, () => {
+  console.log('client connected')
+  client.write(buf)
+})
+
+client.on('data', function (data) {
+  console.log('Received response: %d bytes', data.byteLength)
+  if (response == null) {
+    if (data.byteLength > 1) {
+      const plen = data.readUInt16BE(0)
+      expectedLength = plen
+      if (plen < 12) {
+        throw new Error('below DNS minimum packet length')
+      }
+      response = Buffer.from(data)
+    }
+  } else {
+    response = Buffer.concat([response, data])
+  }
+
+  if (response.byteLength >= expectedLength) {
+    console.log(dnsPacket.streamDecode(response))
+    client.destroy()
+  }
+})
+
+client.on('end', () => {
+  console.log('Connection ended')
+})
diff --git a/testing/xpcshell/dns-packet/examples/udp.js b/testing/xpcshell/dns-packet/examples/udp.js
new file mode 100644
index 0000000000..0f9df9d794
--- /dev/null
+++ b/testing/xpcshell/dns-packet/examples/udp.js
@@ -0,0 +1,28 @@
+'use strict'
+
+const dnsPacket = require('..')
+const dgram = require('dgram')
+
+const socket = dgram.createSocket('udp4')
+
+function getRandomInt (min, max) {
+  return Math.floor(Math.random() * (max - min + 1)) + min
+}
+
+const buf = dnsPacket.encode({
+  type: 'query',
+  id: getRandomInt(1, 65534),
+  flags: dnsPacket.RECURSION_DESIRED,
+  questions: [{
+    type: 'A',
+    name: 'google.com'
+  }]
+})
+
+socket.on('message', function (message, rinfo) {
+  console.log(rinfo)
+  console.log(dnsPacket.decode(message)) // prints out a response from google dns
+  socket.close()
+})
+
+socket.send(buf, 0, buf.length, 53, '8.8.8.8')