to close the underlying node, replaced the window.beforeunload event by an...

to close the underlying node, replaced the window.beforeunload event by an http request at electron level

Breeze.UI/main.ts

@@ -48,7 +48,23 @@ function createWindow() {
     // when you should delete the corresponding element.
     mainWindow = null;
   });
+
+  // Emitted when the window is going to close.
+  mainWindow.on('close', function () {
+    var http = require('http');
+    const options = {
+      hostname: 'localhost',  
+      port: 5000,
+      path: '/api/node/shutdown',
+      method: 'POST'
+      };
+
+    const req = http.request(options, (res) => {});  
+    req.write('');
+    req.end();    
+  });
 }
+
 // This method will be called when Electron has finished
 // initialization and is ready to create browser windows.
 // Some APIs can only be used after this event occurs.

Breeze.UI/src/app/app.component.ts

-import { Component, OnInit, HostListener } from '@angular/core';
+import { Component, OnInit } from '@angular/core';
 import { Router } from '@angular/router';
 
 import { ApiService } from './shared/services/api.service';
@@ -26,23 +26,4 @@ export class AppComponent implements OnInit {
     this.loading = false;
     this.router.navigate(['/login']);
   }
-
-  @HostListener('window:unload')
-  unloadHandler() {   
-    this.apiService.shutdownNode().subscribe(
-          response => {},
-          error => {
-            if (error.status === 0) {
-              alert("Error closing application. please close the dotnet process manually.");
-            } else if (error.status >= 400) {
-              if (!error.json().errors[0]) {
-                console.log(error);
-              }
-              else {
-                alert(error.json().errors[0].message);
-              }
-            }
-          }
-        );
-  }
 }