feat(android): stream the connection info

android/src/main/kotlin/com/xenikii/nearby_service/NearbyServiceManager.kt

@@ -289,4 +289,28 @@ class NearbyServiceManager(private var context: Context) {
             handler.removeCallbacks(postCallback)
         }
     }
+    var connectionInfoHandler = object : EventChannel.StreamHandler {
+        private var handler: Handler = Handler(Looper.getMainLooper())
+        private var eventSink: EventChannel.EventSink? = null
+
+        val postCallback = object : Runnable {
+            override fun run() {
+                handler.post { eventSink?.success(receiver.wifiInfo?.toJsonString()) }
+                handler.postDelayed(this, 1000)
+            }
+        }
+
+        override fun onListen(arguments: Any?, sink: EventChannel.EventSink?) {
+            onCancel(null)
+            eventSink = sink
+            Logger.d("Listen connection info")
+            handler.postDelayed(postCallback, 1000)
+        }
+
+        override fun onCancel(p0: Any?) {
+            Logger.d("Kill last process connection info")
+            eventSink = null
+            handler.removeCallbacks(postCallback)
+        }
+    }
 }

android/src/main/kotlin/com/xenikii/nearby_service/NearbyServicePlugin.kt

@@ -17,6 +17,7 @@ import kotlinx.coroutines.launch
 const val CHANNEL_NAME = "nearby_service"
 const val PEERS_CHANNEL_NAME = "nearby_service_peers"
 const val CONNECTED_DEVICE_CHANNEL_NAME = "nearby_service_connected_device"
+const val CONNECTION_INFO_CHANNEL_NAME = "nearby_service_connection_info"
 
 /**
  * Plugin for creating connections in the Wi-fi Direct scope.
@@ -27,6 +28,7 @@ class NearbyServicePlugin : FlutterPlugin, MethodCallHandler, ActivityAware {
     private lateinit var manager: NearbyServiceManager
     private lateinit var peersChannel: EventChannel
     private lateinit var connectedDeviceChannel: EventChannel
+    private lateinit var connectionInfoChannel: EventChannel
 
 
     @OptIn(DelicateCoroutinesApi::class)
@@ -157,6 +159,9 @@ class NearbyServicePlugin : FlutterPlugin, MethodCallHandler, ActivityAware {
 
         connectedDeviceChannel = EventChannel(binaryMessenger, CONNECTED_DEVICE_CHANNEL_NAME)
         connectedDeviceChannel.setStreamHandler(manager.connectedDeviceInfoHandler)
+
+        connectionInfoChannel = EventChannel(binaryMessenger, CONNECTION_INFO_CHANNEL_NAME)
+        connectionInfoChannel.setStreamHandler(manager.connectionInfoHandler)
     }