When attempting to navigate to a page for an isolate that doesn't exist, offer to

runtime/observatory/lib/src/app/application.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of app;
 
 /// The observatory application. Instances of this are created and owned
 /// by the observatory_application custom element.
 class ObservatoryApplication extends Observable {
   static ObservatoryApplication app;
@@ skipping 93 matching lines @@
     _pageRegistry.add(new VMPage(this));
     _pageRegistry.add(new FlagsPage(this));
     _pageRegistry.add(new InspectPage(this));
     _pageRegistry.add(new ClassTreePage(this));
     _pageRegistry.add(new DebuggerPage(this));
     _pageRegistry.add(new CpuProfilerPage(this));
     _pageRegistry.add(new TableCpuProfilerPage(this));
     _pageRegistry.add(new AllocationProfilerPage(this));
     _pageRegistry.add(new HeapMapPage(this));
     _pageRegistry.add(new VMConnectPage(this));
+    _pageRegistry.add(new IsolateReconnectPage(this));
     _pageRegistry.add(new ErrorViewPage(this));
     _pageRegistry.add(new MetricsPage(this));
     // Note that ErrorPage must be the last entry in the list as it is
     // the catch all.
     _pageRegistry.add(new ErrorPage(this));
   }
 
   void _onError(ServiceError error) {
     lastErrorOrException = error;
     _visit(Uri.parse('error/'), null);
   }
 
   void _onException(ServiceException exception) {
     lastErrorOrException = exception;
     if (exception.kind == 'NetworkException') {
       // Got a network exception, visit the vm-connect page.
       this.vm = null;
-      locationManager.go(locationManager.makeLink('/vm-connect/'));
+      locationManager.go(locationManager.makeLink('/vm-connect'));
     } else {
       _visit(Uri.parse('error/'), null);
     }
   }
 
   void _visit(Uri uri, Map internalArguments) {
     if (internalArguments['trace'] != null) {
       var traceArg = internalArguments['trace'];
       if (traceArg == 'on') {
         Tracer.start();
@@ skipping 71 matching lines @@
 
   _vmDisconnected(VM vm) {
     if (this.vm != vm) {
       // This disconnect event occured *after* a new VM was installed.
       return;
     }
     this.vm = null;
     notifications.add(new ServiceEvent.vmDisconencted());
   }
 }