Adds websocket infos

LeStorage/StoreCenter.swift

@@ -145,6 +145,12 @@ public class StoreCenter {
     public var websocketFailure: Bool {
         return self._webSocketManager?.failure ?? true
     }
+    public var websocketError: Error? {
+        return self._webSocketManager?.error
+    }
+    public var websocketReconnectAttempts: Int {
+        return self._webSocketManager?.reconnectAttempts ?? 0
+    }
     
     public var apiURL: String? {
         return self._urlManager?.api

LeStorage/WebSocketManager.swift

@@ -19,6 +19,7 @@ class WebSocketManager: ObservableObject {
     
     fileprivate var _reconnectAttempts = 0
     fileprivate var _failure = false
+    fileprivate var _error: Error? = nil
     fileprivate var _pingOk = false
     
     init(storeCenter: StoreCenter, urlString: String) {
@@ -59,10 +60,12 @@ class WebSocketManager: ObservableObject {
             switch result {
             case .failure(let error):
                 self._failure = true
+                self._error = error
                 print("Error in receiving message: \(error)")
                 self._handleWebSocketError(error)
             case .success(let message):
                 self._failure = false
+                self._reconnectAttempts = 0
                 switch message {
                 case .string(let deviceId):
 //                    print("device id = \(StoreCenter.main.deviceId()), origin id: \(deviceId)")
@@ -90,7 +93,7 @@ class WebSocketManager: ObservableObject {
     private func _handleWebSocketError(_ error: Error) {
 //        print("WebSocket error: \(error)")
         
-        // Exponential backoff for reconnection
+        // up to 10 seconds of reconnection
         let delay = min(Double(self._reconnectAttempts), 10.0)
         self._reconnectAttempts += 1
         
@@ -131,7 +134,17 @@ class WebSocketManager: ObservableObject {
     var pingStatus: Bool {
         return self._pingOk
     }
+    
     var failure: Bool {
         return self._failure
     }
+    
+    var error: Error? {
+        return self._error
+    }
+    
+    var reconnectAttempts: Int {
+        return self._reconnectAttempts
+    }
+    
 }