add search device function

README.md

@@ -0,0 +1,4 @@
+# node-googlehome
+It uses Node.js to communicate with Google Home.
+
+

example.js

@@ -0,0 +1,4 @@
+const googlehome = require('./index')
+
+googlehome.search(1000)
+    .then(resp => console.log(resp))

index.js

@@ -0,0 +1,3 @@
+const search = require('./lib/search')
+
+module.exports = {search: search}

lib/search.js

@@ -0,0 +1,18 @@
+const mdns = require('mdns'),
+    browser = mdns.createBrowser(mdns.tcp('googlecast'))
+
+async function search(waitTime = 1000) {
+
+    let services = []
+
+    browser.start()
+    browser.on('serviceUp', service => { services.push(service) })
+    await new Promise(resolve => setTimeout(resolve, 1000))
+    browser.stop()
+
+    return services
+        .filter(service => { if(service.txtRecord.md === 'Google Home') return service })
+        .map(service => { return Object.assign(service.txtRecord, {address: service.addresses[0]}) })
+}
+
+module.exports = search

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "node-googlehome",
+  "version": "1.0.0",
+  "main": "index.js",
+  "repository": "https://github.com/Ghostrick/node-googlehome",
+  "author": "_Ghostrick_ <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "mdns": "^2.3.4"
+  }
+}

yarn.lock

@@ -0,0 +1,18 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+bindings@~1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.2.1.tgz#14ad6113812d2d37d72e67b4cacb4bb726505f11"
+
+mdns@^2.3.4:
+  version "2.3.4"
+  resolved "https://registry.yarnpkg.com/mdns/-/mdns-2.3.4.tgz#650380ac76089430cf6c8981a945dbd27d02f5b7"
+  dependencies:
+    bindings "~1.2.1"
+    nan "~2.3.0"
+
+nan@~2.3.0:
+  version "2.3.5"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.3.5.tgz#822a0dc266290ce4cd3a12282ca3e7e364668a08"