fix issue #22 for Windows and Android

android/build.gradle

@@ -19,30 +19,35 @@ group 'com.nimroddayan.flutternsd'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.4.0'
+    ext.kotlin_version = '1.7.10'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath 'com.android.tools.build:gradle:7.3.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
 rootProject.allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 29
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'com.nimroddayan.flutternsd'
+    }
+
+    compileSdkVersion 34
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'

android/src/main/kotlin/com/nimroddayan/flutternsd/FlutterNsdPlugin.kt

@@ -19,6 +19,8 @@ package com.nimroddayan.flutternsd
 
 import android.net.nsd.NsdManager
 import android.net.nsd.NsdServiceInfo
+import android.os.Build
+import android.os.Build.VERSION_CODES
 import android.os.Handler
 import android.os.Looper
 import androidx.annotation.NonNull
@@ -241,10 +243,17 @@ private fun NsdServiceInfo?.toMap(): Map<String, Any?> {
   val port = this?.port
   val name = this?.serviceName
   val txt = this?.attributes
+  val hostAddresses =  if(Build.VERSION.SDK_INT > VERSION_CODES.UPSIDE_DOWN_CAKE) {
+    this?.hostAddresses?.map { it.hostAddress }
+  } else {
+    listOf(this?.host?.hostAddress)
+  }
+
 
   Timber.v("Resolved service: $name-$hostname:$port $txt")
   return mapOf(
     "hostname" to hostname,
+    "hostAddresses" to hostAddresses,
     "port" to port,
     "name" to name,
     "txt" to txt

lib/flutter_nsd.dart

@@ -91,7 +91,12 @@ class FlutterNsd {
     final int port = call.arguments['port'];
     final String name = call.arguments['name'];
     final Map<String, Uint8List> txt = Map.from(call.arguments['txt']);
-    var nsdServiceInfo = NsdServiceInfo(hostname, port, name, txt);
+    List<String>? hostAddresses;
+    List<Object?>? rawAddresses = call.arguments['hostAddresses'];
+    if (rawAddresses != null) {
+      hostAddresses = rawAddresses.where((e) => e != null).map((e) => e.toString()).toList();
+    }
+    var nsdServiceInfo = NsdServiceInfo(hostname, port, name, txt, hostAddresses: hostAddresses);
     return nsdServiceInfo;
   }
 
@@ -104,11 +109,12 @@ class FlutterNsd {
 /// Info class for holding discovered service
 class NsdServiceInfo {
   final String? hostname;
+  final List<String>? hostAddresses;
   final int? port;
   final String? name;
   final Map<String, Uint8List>? txt;
 
-  NsdServiceInfo(this.hostname, this.port, this.name, this.txt);
+  NsdServiceInfo(this.hostname, this.port, this.name, this.txt, {this.hostAddresses});
 }
 
 /// List of possible error codes of NsdError

windows/flutter_nsd_plugin.cpp

@@ -37,6 +37,7 @@ namespace {
     std::string servicename;
     std::string ipv4address;
     std::string ipv6address;
+    flutter::EncodableList addressList;
     int port;
     std::map<flutter::EncodableValue, flutter::EncodableValue> txt;
   };
@@ -109,6 +110,7 @@ namespace {
                {flutter::EncodableValue("hostname"), flutter::EncodableValue(packet.hostname)},
                {flutter::EncodableValue("ipv4address"), flutter::EncodableValue(packet.ipv4address)},
                {flutter::EncodableValue("ipv6address"), flutter::EncodableValue(packet.ipv6address)},
+               {flutter::EncodableValue("hostAddresses"), packet.addressList},
                {flutter::EncodableValue("port"), flutter::EncodableValue(packet.port)},
                {flutter::EncodableValue("name"), flutter::EncodableValue(name)},
                {flutter::EncodableValue("txt"), flutter::EncodableValue(packet.txt)}
@@ -158,6 +160,7 @@ namespace {
     MdnsResult& packet = packets[base];
     packet.dnsname = _hostname;
     packet.ipv4address = _address;
+    packet.addressList.push_back(flutter::EncodableValue(_address));
     process(base, last);
 
   }
@@ -167,6 +170,7 @@ namespace {
     MdnsResult& packet = packets[base];
     packet.dnsname = _hostname;
     packet.ipv6address = _address;
+    packet.addressList.push_back(flutter::EncodableValue(_address));
     process(base, last);
   }
   void MdnsRequest::callbackTXT(const void* base, boolean last, STRING_ARG_DECL(key), STRING_ARG_DECL(value)) {

windows/mdns_impl.c

@@ -7,9 +7,9 @@
 #include <iphlpapi.h>
 #define sleep(x) Sleep(x * 1000)
 
-#if (_DEBUG == 0)
+//#if (_DEBUG == 0)
 #define printf
-#endif
+//#endif
 
 #include "mdns.h"