Mweb enhancements 3 (#1744)

* version 4.20.0

* update build numbers

* UI updates and script fix for ios bundle identifier

* disable mweb for desktop

* change hardcoded ltc server ip address
electrum connection enhancement

* MWEB enhancements 2.0 (#1735)

* additional logging and minor fixes

* additional logging and minor fixes

* addresses pt.1

* Allow Wallet Group Names to be the same as Wallet Names (#1730)

* fix: Issues with imaging

* fix: Allow group names to be the same as wallet names

* fix: Bug with wallet grouping when a wallet is minimized

* fix: Bug with wallet grouping when a wallet is minimized

* logs of fixes and experimental changes, close wallet before opening next

* save

* fix icon

* fixes

* [skip ci] updates

* [skip ci] updates

* updates

* minor optimizations

* fix for when switching between wallets

* [skip ci] updates

* [skip ci] updates

* Update cw_bitcoin/lib/litecoin_wallet.dart

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

* Update cw_bitcoin/lib/litecoin_wallet.dart

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

* mobx

* mostly logging

* stream fix pt.1 [skip ci]

* updates

* some fixes and enhancements

* [skip ci] minor

* potential partial fix for streamsink closed

* fix stream sink closed errors

* fix mweb logo colors

* save

* minor enhancements [skip ci]

* save

* experimental

* minor

* minor [skip ci]

---------

Co-authored-by: David Adegoke <64401859+Blazebrain@users.noreply.github.com>
Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

* fix menu list removing from original list

* detach sync status from mwebsyncstatus

* minor

* keep sync status in sync where necessary

* minor

* wip

* appears to work?

* updates

* prevent mwebd from submitting non mweb transactions

* fix unspent coins info not persisting for mweb coins + other minor fixes

* [skip ci] minor

* Polish MWEB card UI

* make sure current chain tip is updated correctly [skip ci]

* [skip ci] review fixes

* [skip ci] detect mweb outputs more thoroughly (fix peg-in commit error)

* fix change address on send ui

* fix qr code scan issue

* get segwit address for pegout even if mweb is selected on the receive screen [skip ci]

* - Fix adding nodes twice
- Fix mempool API parsing error

* (potentially) fix duplicate tx history bug

* [skip ci] fix bc1 address

* don't show contacts prompt on pegin/out + potential unconfirmed balance fixes

* [skip ci] minor cleanup

* fix mweb input detection

* fix showing mweb address for non-mweb transactions

---------

Co-authored-by: OmarHatem <omarh.ismail1@gmail.com>
Co-authored-by: David Adegoke <64401859+Blazebrain@users.noreply.github.com>
Co-authored-by: tuxpizza <tuxsudo@tux.pizza>

cw_bitcoin/lib/electrum.dart

@@ -68,8 +68,8 @@ class ElectrumClient {
 
     try {
       await socket?.close();
-      socket = null;
     } catch (_) {}
+    socket = null;
 
     try {
       if (useSSL == false || (useSSL == null && uri.toString().contains("btc-electrum"))) {
@@ -102,7 +102,8 @@ class ElectrumClient {
       return;
     }
 
-    _setConnectionStatus(ConnectionStatus.connected);
+    // use ping to determine actual connection status since we could've just not timed out yet:
+    // _setConnectionStatus(ConnectionStatus.connected);
 
     socket!.listen(
       (Uint8List event) {
@@ -128,7 +129,7 @@ class ElectrumClient {
         print("SOCKET CLOSED!!!!!");
         unterminatedString = '';
         try {
-          if (host == socket?.address.host) {
+          if (host == socket?.address.host || socket == null) {
             _setConnectionStatus(ConnectionStatus.disconnected);
             socket?.destroy();
           }
@@ -178,7 +179,7 @@ class ElectrumClient {
         unterminatedString = '';
       }
     } catch (e) {
-      print(e.toString());
+      print("parse $e");
     }
   }
 
@@ -191,7 +192,7 @@ class ElectrumClient {
     try {
       await callWithTimeout(method: 'server.ping');
       _setConnectionStatus(ConnectionStatus.connected);
-    } on RequestFailedTimeoutException catch (_) {
+    } catch (_) {
       _setConnectionStatus(ConnectionStatus.disconnected);
     }
   }
@@ -431,7 +432,7 @@ class ElectrumClient {
 
       return subscription;
     } catch (e) {
-      print(e.toString());
+      print("subscribe $e");
       return null;
     }
   }
@@ -470,7 +471,8 @@ class ElectrumClient {
 
       return completer.future;
     } catch (e) {
-      print(e.toString());
+      print("callWithTimeout $e");
+      rethrow;
     }
   }
 
@@ -537,6 +539,12 @@ class ElectrumClient {
     onConnectionStatusChange?.call(status);
     _connectionStatus = status;
     _isConnected = status == ConnectionStatus.connected;
+    if (!_isConnected) {
+      try {
+        socket?.destroy();
+      } catch (_) {}
+      socket = null;
+    }
   }
 
   void _handleResponse(Map<String, dynamic> response) {