Add Bonjour based host discovery

companion/manifest.json

@@ -1,4 +1,5 @@
 {
+	"$schema": "../node_modules/@companion-module/base/assets/manifest.schema.json",
 	"id": "bmd-smartview",
 	"name": "bmd-smartview",
 	"shortname": "smart",
@@ -22,5 +23,14 @@
 	},
 	"manufacturer": "Blackmagic Design",
 	"products": ["SmartView", "SmartScope"],
-	"keywords": ["Scope", "Monitor"]
+	"keywords": ["Scope", "Monitor"],
+	"bonjourQueries": {
+		"bonjourHost": {
+			"type": "blackmagic",
+			"protocol": "tcp",
+			"txt": {
+				"class": "SmartView"
+			}
+		}
+	}
 }

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "bmd-smartview",
-	"version": "2.1.0",	"main": "src/index.js",
+	"version": "2.2.0",	"main": "src/index.js",
 	"type": "module",
 	"scripts": {
 		"test": "echo \"Error: no test specified\" && exit 1",

src/index.js

@@ -1,6 +1,7 @@
 import {
 	CreateConvertToBooleanFeedbackUpgradeScript,
 	InstanceBase,
+	InstanceStatus,
 	Regex,
 	runEntrypoint,
 	TCPHelper,
@@ -84,13 +85,29 @@ class BlackmagicSmartviewInstance extends InstanceBase {
 	 */
 	getConfigFields() {
 		return [
+			{
+				type: 'bonjour-device',
+				id: 'bonjourHost',
+				label: 'Device',
+				width: 12,
+			},
 			{
 				type: 'textinput',
 				id: 'host',
 				label: 'Target IP',
 				width: 6,
+				isVisible: (options) => !options['bonjourHost'],
+				default: '',
 				regex: Regex.IP,
 			},
+			{
+				type: 'static-text',
+				id: 'host-filler',
+				width: 6,
+				label: '',
+				isVisible: (options) => !!options['bonjourHost'],
+				value: '',
+			},
 			{
 				type: 'static-text',
 				id: 'info',
@@ -110,6 +127,37 @@ class BlackmagicSmartviewInstance extends InstanceBase {
 		]
 	}
 
+	/**
+	 * INTERNAL: returns the IP and port from the Bonjour host.
+	 *
+	 * @returns {Object} the IP and port object
+	 * @access protected
+	 * @since 2.2.0
+	 */
+	parseIpAndPort() {
+		// TODO: Switch to Regex.IP when we can convert that into a RegExp object... (it will need some processing)
+		const ipRegex = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
+
+		if (this.config.bonjourHost) {
+			const [ip, rawPort] = this.config.bonjourHost.split(':')
+			const port = Number(rawPort)
+			if (ip.match(ipRegex) && !isNaN(port)) {
+				return {
+					ip,
+					port,
+				}
+			}
+		} else if (this.config.host) {
+			if (this.config.host.match(ipRegex)) {
+				return {
+					ip: this.config.host,
+					port: undefined,
+				}
+			}
+		}
+		return null
+	}
+
 	/**
 	 * INTERNAL: returns the desired monitor object.
 	 *
@@ -182,18 +230,20 @@ class BlackmagicSmartviewInstance extends InstanceBase {
 	 */
 	initTCP() {
 		this.receiveBuffer = ''
+		let target = this.parseIpAndPort()
 
 		if (this.socket !== undefined) {
 			this.socket.destroy()
 			delete this.socket
 		}
 
-		if (this.config.port === undefined) {
-			this.config.port = 9992
+		if (target && target.port === undefined) {
+			this.log('info', 'Setting port to default')
+			target.port = 9992
 		}
 
-		if (this.config.host) {
-			this.socket = new TCPHelper(this.config.host, this.config.port)
+		if (target && target.ip) {
+			this.socket = new TCPHelper(target.ip, target.port)
 
 			this.socket.on('status_change', (status, message) => {
 				this.updateStatus(status, message)
@@ -258,6 +308,9 @@ class BlackmagicSmartviewInstance extends InstanceBase {
 					this.log('debug', 'weird response from smartview', line, line.length)
 				}
 			})
+		} else {
+			this.log('error', 'Didn\'t get a target to connect to')
+			this.updateStatus(InstanceStatus.Disconnected)
 		}
 	}