WIP

Author: janikwitzig

src/handlers/surface-handler.ts

@@ -0,0 +1,43 @@
+import net from 'net'
+import { ModuleLogger } from './logger.js'
+
+const ANNOUNCE_HOST = '127.0.0.1'
+const ANNOUNCE_PORT = 6942
+const ANNOUNCE_INTERVAL_MS = 1000
+const ANNOUNCE_PAYLOAD = 'hello\n\n'
+
+export class SurfaceAnnouncer {
+	private logger?: ModuleLogger
+	private interval: NodeJS.Timeout | undefined
+
+	constructor(logger?: ModuleLogger) {
+		this.logger = logger
+	}
+
+	start(): void {
+		if (this.interval) return
+
+		this.interval = setInterval(() => {
+			this.sendAnnounce()
+		}, ANNOUNCE_INTERVAL_MS)
+	}
+
+	stop(): void {
+		if (!this.interval) return
+
+		clearInterval(this.interval)
+		this.interval = undefined
+	}
+
+	private sendAnnounce(): void {
+		const socket = net.connect(ANNOUNCE_PORT, ANNOUNCE_HOST, () => {
+			socket.write(ANNOUNCE_PAYLOAD)
+			socket.end()
+		})
+		this.logger?.info('Sending surface announce')
+		// Ignore errors (receiver may not be running yet)
+		socket.on('error', () => {
+			socket.destroy()
+		})
+	}
+}

src/index.ts

@@ -16,6 +16,7 @@ import { StateHandler } from './handlers/state-handler.js'
 import { FeedbackHandler } from './handlers/feedback-handler.js'
 import { VariableHandler } from './variables/variable-handler.js'
 import { OscForwarder } from './handlers/osc-forwarder.js'
+import { SurfaceAnnouncer as SurfaceHandler } from './handlers/surface-handler.js'
 
 export class WingInstance extends InstanceBase<WingConfig> implements InstanceBaseExt<WingConfig> {
 	config!: WingConfig
@@ -29,6 +30,7 @@ export class WingInstance extends InstanceBase<WingConfig> implements InstanceBa
 	stateHandler: StateHandler | undefined
 	feedbackHandler: FeedbackHandler | undefined
 	variableHandler: VariableHandler | undefined
+	surfaceHandler: SurfaceHandler | undefined
 	transitions: WingTransitions
 	oscForwarder: OscForwarder | undefined
 
@@ -86,6 +88,8 @@ export class WingInstance extends InstanceBase<WingConfig> implements InstanceBa
 		this.setupOscForwarder()
 
 		this.deviceDetector?.subscribe(this.id)
+		this.surfaceHandler = new SurfaceHandler(this.logger)
+		this.surfaceHandler.start()
 	}
 
 	getConfigFields(): SomeCompanionConfigField[] {