fix: detect driver failed and restart (#1259)

* fix: detect driver failed and restart

Fixes #1246

* fix: error check

Co-authored-by: AlCalzone <d.griesel@gmx.net>

* fix: emit event before destroy

Co-authored-by: AlCalzone <d.griesel@gmx.net>

lib/ZwaveClient.js

@@ -318,8 +318,11 @@ class ZwaveClient extends EventEmitter {
 
   /**
    * Method used to close client connection, use this before destroy
+   *
+   * @param {boolean} keepListeners Prevents to remove all ZwaveCLient listeners (used when restarting)
+   * @memberof ZwaveClient
    */
-  async close () {
+  async close (keepListeners) {
     this.status = ZWAVE_STATUS.closed
     this.closed = true
 
@@ -363,10 +366,13 @@ class ZwaveClient extends EventEmitter {
 
     if (this.driver) {
       this.driverReady = false
-      this.removeAllListeners()
       await this.driver.destroy()
     }
 
+    if (!keepListeners) {
+      this.removeAllListeners()
+    }
+
     logger.info('Client closed')
   }
 
@@ -1750,12 +1756,22 @@ class ZwaveClient extends EventEmitter {
     logger.info(`Scanning network with homeid: ${homeHex}`)
   }
 
-  _onDriverError (error) {
+  async _onDriverError (error) {
     this.error = 'Driver: ' + error.message
     this.status = ZWAVE_STATUS.driverFailed
     this._updateControllerStatus(this.error)
-
     this.emit('event', eventEmitter.driver, 'driver error', error)
+
+    if (error.code === ZWaveErrorCodes.Driver_Failed) {
+      // this cannot be recovered by zwave-js, requires a manual restart
+      try {
+        await this.close(true)
+        this.closed = false
+        await this.connect()
+      } catch (error) {
+        logger.error(`Error while restarting driver: ${error.message}`)
+      }
+    }
   }
 
   _onScanComplete () {