iOS on Windows patch for Flutter

ios.patch

diff --git a/packages/flutter_tools/lib/src/commands/attach.dart b/packages/flutter_tools/lib/src/commands/attach.dart
index bf98583f0..8d010fb82 100644
--- a/packages/flutter_tools/lib/src/commands/attach.dart
+++ b/packages/flutter_tools/lib/src/commands/attach.dart
@@ -214,9 +214,6 @@ class AttachCommand extends FlutterCommand {
           }
           rethrow;
         }
-      } else if ((device is IOSDevice) || (device is IOSSimulator)) {
-        final MDnsObservatoryDiscoveryResult result = await MDnsObservatoryDiscovery().query(applicationId: appId);
-        observatoryUri = await _buildObservatoryUri(device, hostname, result.port, result.authCode);
       }
       // If MDNS discovery fails or we're not on iOS, fallback to ProtocolDiscovery.
       if (observatoryUri == null) {
diff --git a/packages/flutter_tools/lib/src/ios/devices.dart b/packages/flutter_tools/lib/src/ios/devices.dart
index d469da18f..9b0046601 100644
--- a/packages/flutter_tools/lib/src/ios/devices.dart
+++ b/packages/flutter_tools/lib/src/ios/devices.dart
@@ -101,7 +101,7 @@ class IOSDevices extends PollingDeviceDiscovery {
   IOSDevices() : super('iOS devices');
 
   @override
-  bool get supportsPlatform => platform.isMacOS;
+  bool get supportsPlatform => true;
 
   @override
   bool get canListAnything => iosWorkflow.canListDevices;
diff --git a/packages/flutter_tools/lib/src/ios/ios_workflow.dart b/packages/flutter_tools/lib/src/ios/ios_workflow.dart
index 224c227db..f1d55031e 100644
--- a/packages/flutter_tools/lib/src/ios/ios_workflow.dart
+++ b/packages/flutter_tools/lib/src/ios/ios_workflow.dart
@@ -27,7 +27,7 @@ class IOSWorkflow implements Workflow {
 
   // We need xcode (+simctl) to list simulator devices, and libimobiledevice to list real devices.
   @override
-  bool get canListDevices => xcode.isInstalledAndMeetsVersionCheck && xcode.isSimctlInstalled;
+  bool get canListDevices => iMobileDevice.isInstalled || (xcode.isInstalledAndMeetsVersionCheck && xcode.isSimctlInstalled);
 
   // We need xcode to launch simulator devices, and ideviceinstaller and ios-deploy
   // for real devices.
diff --git a/packages/flutter_tools/lib/src/ios/mac.dart b/packages/flutter_tools/lib/src/ios/mac.dart
index 19ec18438..6fc5b0494 100644
--- a/packages/flutter_tools/lib/src/ios/mac.dart
+++ b/packages/flutter_tools/lib/src/ios/mac.dart
@@ -124,8 +124,14 @@ class IMobileDevice {
   Future<String> getAvailableDeviceIDs() async {
     try {
       final ProcessResult result = await processManager.run(<String>['idevice_id', '-l']);
-      if (result.exitCode != 0)
-        throw ToolExit('idevice_id returned an error:\n${result.stderr}');
+      if (result.exitCode != 0) {
+        if (result.stderr.toString().contains('ERROR: Unable to retrieve device list!')) {
+          // idevice_id might throw this error if there are no connected devices
+          return '';
+        } else {
+          throw ToolExit('idevice_id returned an error:\n${result.stderr}');
+        }
+      }
       return result.stdout;
     } on ProcessException {
       throw ToolExit('Failed to invoke idevice_id. Run flutter doctor.');

multicast.patch

diff --git a/packages/multicast_dns/lib/multicast_dns.dart b/packages/multicast_dns/lib/multicast_dns.dart
index 3b8fa47..6e1444c 100644
--- a/packages/multicast_dns/lib/multicast_dns.dart
+++ b/packages/multicast_dns/lib/multicast_dns.dart
@@ -100,12 +100,13 @@ class MDnsClient {
     }
     _starting = true;
 
+    print("Listen " + listenAddress.address);
     // Listen on all addresses.
     _incoming = await _rawDatagramSocketFactory(
       listenAddress.address,
       _mDnsPort,
       reuseAddress: true,
-      reusePort: true,
+      reusePort: false,
       ttl: 255,
     );
 
@@ -124,11 +125,14 @@ class MDnsClient {
     for (NetworkInterface interface in interfaces) {
       // Create a socket for sending on each adapter.
       final InternetAddress targetAddress = interface.addresses[0];
+      if(interface.addresses[0].toString().contains("169.254"))
+        continue;
+
       final RawDatagramSocket socket = await _rawDatagramSocketFactory(
         targetAddress,
         _mDnsPort,
         reuseAddress: true,
-        reusePort: true,
+        reusePort: false,
         ttl: 255,
       );
       _sockets.add(socket);
@@ -152,6 +156,7 @@ class MDnsClient {
     _incoming.listen(_handleIncoming);
     _started = true;
     _starting = false;
+    print("started");
   }
 
   /// Stop the client and close any associated sockets.