From 31f9cca33ac0ec4e5a035439dabac02d84b6b049 Mon Sep 17 00:00:00 2001
From: Craig Raw <craigraw@gmail.com>
Date: Mon, 27 Sep 2021 08:15:20 +0200
Subject: [PATCH] handle electrs batching detection better

---
 .../java/com/sparrowwallet/sparrow/net/ElectrumServer.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/sparrowwallet/sparrow/net/ElectrumServer.java b/src/main/java/com/sparrowwallet/sparrow/net/ElectrumServer.java
index 5e55ee0f..4019ee94 100644
--- a/src/main/java/com/sparrowwallet/sparrow/net/ElectrumServer.java
+++ b/src/main/java/com/sparrowwallet/sparrow/net/ElectrumServer.java
@@ -891,6 +891,10 @@ public class ElectrumServer {
 
             if(server.startsWith("electrs/")) {
                 String electrsVersion = server.substring("electrs/".length());
+                int dashIndex = electrsVersion.indexOf('-');
+                if(dashIndex > -1) {
+                    electrsVersion = electrsVersion.substring(0, dashIndex);
+                }
                 try {
                     Version version = new Version(electrsVersion);
                     if(version.compareTo(ELECTRS_MIN_BATCHING_VERSION) >= 0) {