diff --git a/lib/im/SocketClient.dart b/lib/im/SocketClient.dart
index 0e1820ff..950eacdc 100644
--- a/lib/im/SocketClient.dart
+++ b/lib/im/SocketClient.dart
@@ -4,6 +4,8 @@ import 'dart:core';
 import 'dart:core';
 import 'dart:io';
 import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:huixiang/im/Proto.dart';
 import 'package:huixiang/im/database/message.dart';
 import 'package:huixiang/im/out/auth.pb.dart';
@@ -17,11 +19,17 @@ class SocketClient {
   final String ip = kDebugMode ? '192.168.10.129' : '47.93.216.24';
   final num port = 9090;
   Socket _socket;
-  SharedPreferences shared;
+  SharedPreferences _shared;
 
   connect() async {
-    shared = await SharedPreferences.getInstance();
+    _shared = await SharedPreferences.getInstance();
 
+    if (_socket != null) {
+      reconnect();
+      return;
+    }
+
+    showDebugToast("socket-connect .... ");
     await Socket.connect(ip, port).then((value) {
       debugPrint("socket-connect-$ip");
       _socket = value;
@@ -34,10 +42,9 @@ class SocketClient {
 
         Map<String, dynamic> messageMap = createMessage(userId, utf8.decode(dataResult.data), msgType: dataResult.type.value, userId: dataResult.from);
         Message message = Message.fromJson(messageMap);
-        callbacks[userId]?.call(message); /// user self conversation callback
+        callbacks[userId]?.call(message); /// user self conversation list callback
 
         if (callbacks[dataResult.from] != null) {
-          //
           messageMap["state"] = 1;
           message.state = 1;
           callbacks[dataResult.from].call(message); /// user conversation callback
@@ -47,27 +54,35 @@ class SocketClient {
 
       }, onError: (Object error, StackTrace stackTrace) {
         debugPrint("socket-listen-error: $error, stackTrace: $stackTrace");
+        showDebugToast("socket-listen-error: $error, stackTrace: $stackTrace");
         reconnect();
       }, onDone: () {
         debugPrint("socket-listen-down: down");
       });
 
-      authRequest(shared.getString("token"));
+      authRequest(_shared.getString("token"));
 
       heartbeat();
     }).catchError((error) {
       debugPrint("socket-connect-error: $error");
+      showDebugToast("socket-connect-error: $error");
       reconnectTime = 1500;
       _socket = null;
       reconnect();
     });
   }
 
+  showDebugToast(text) {
+    if (kDebugMode) {
+      SmartDialog.showToast(text, alignment: Alignment.center);
+    }
+  }
+
   heartbeat() {
     Timer.periodic(const Duration(milliseconds: 30000), (timer) {
-      int milliseTime = DateTime.now().millisecondsSinceEpoch;
-      debugPrint("heartbeat: ${milliseTime}");
-      Uint8List data = utf8.encode(jsonEncode({"heartbeat": milliseTime}));
+      int millisecondsTime = DateTime.now().millisecondsSinceEpoch;
+      debugPrint("heartbeat: $millisecondsTime");
+      Uint8List data = utf8.encode(jsonEncode({"heartbeat": millisecondsTime}));
       MsgData msgData = MsgData(from: userId, type: MsgType.TEXT, data: data);
       final proto2 = Proto(3, 1, msgData.writeToBuffer());
       if(!checkSocket()) {
@@ -78,10 +93,10 @@ class SocketClient {
     });
   }
 
-  int reconnectTime = 600;
+  int reconnectTime = 1500;
 
   reconnect() {
-    Future.delayed(Duration(milliseconds: reconnectTime *= 2), () {
+    Future.delayed(Duration(milliseconds: reconnectTime), () {
       dispose();
       connect();
     });
@@ -148,6 +163,6 @@ class SocketClient {
     return true;
   }
 
-  String get userId => shared.getString("userId");
+  String get userId => _shared.getString("userId");
 
 }
\ No newline at end of file