From 73ecbf15d5659ff5a3e8863140de5468766f5410 Mon Sep 17 00:00:00 2001
From: Josh Babb <sneurlax@gmail.com>
Date: Wed, 24 May 2023 13:39:21 -0500
Subject: [PATCH] move dataHandler and errorHandler up in scope

---
 lib/electrumx_rpc/rpc.dart | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/lib/electrumx_rpc/rpc.dart b/lib/electrumx_rpc/rpc.dart
index 34a354c95..7b589e875 100644
--- a/lib/electrumx_rpc/rpc.dart
+++ b/lib/electrumx_rpc/rpc.dart
@@ -17,10 +17,13 @@ class JsonRPC {
   final String host;
   final int port;
   final Duration connectionTimeout;
-  Socket? socket;
 
+  Socket? socket;
   StreamSubscription<Uint8List>? _subscription;
 
+  void Function(List<int>)? _onData;
+  void Function(Object, StackTrace)? _onError;
+
   Future<dynamic> request(String jsonRpcRequest) async {
     final completer = Completer<dynamic>();
     final List<int> responseData = [];
@@ -49,6 +52,8 @@ class JsonRPC {
       }
     }
 
+    _onData = dataHandler;
+
     void errorHandler(Object error, StackTrace trace) {
       Logging.instance
           .log("JsonRPC errorHandler: $error\n$trace", level: LogLevel.Error);
@@ -61,6 +66,8 @@ class JsonRPC {
       // TODO do we need to recreate the socket?
     }
 
+    _onError = errorHandler;
+
     void doneHandler() {
       Logging.instance.log(
         "JsonRPC doneHandler: not destroying socket ${socket?.address}:${socket?.port}",
@@ -78,8 +85,8 @@ class JsonRPC {
       socket ??= await SecureSocket.connect(host, port,
           timeout: connectionTimeout, onBadCertificate: (_) => true);
       _subscription ??= socket!.listen(
-        dataHandler,
-        onError: errorHandler,
+        _onData,
+        onError: _onError,
         onDone: doneHandler,
         cancelOnError: true,
       );
@@ -90,8 +97,8 @@ class JsonRPC {
         timeout: connectionTimeout,
       );
       _subscription ??= socket!.listen(
-        dataHandler,
-        onError: errorHandler,
+        _onData,
+        onError: _onError,
         onDone: doneHandler,
         cancelOnError: true,
       );