From ea686e8adc29832e3362d2afef48e4f0a169bbb7 Mon Sep 17 00:00:00 2001
From: Yakov Gaberman <81639957+ygaberman-px@users.noreply.github.com>
Date: Mon, 26 Jun 2023 14:50:30 -0400
Subject: [PATCH 1/2] remove version check

---
 rpcclient/infrastructure.go | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/rpcclient/infrastructure.go b/rpcclient/infrastructure.go
index fbc43a4568..98d8e75218 100644
--- a/rpcclient/infrastructure.go
+++ b/rpcclient/infrastructure.go
@@ -1619,24 +1619,15 @@ func (c *Client) BackendVersion() (BackendVersion, error) {
 	// to a btcd backend if it does exist.
 	info, err := c.GetInfo()
 
-	switch err := err.(type) {
+	switch err.(type) {
 	// Parse the btcd version and cache it.
 	case nil:
 		log.Debugf("Detected btcd version: %v", info.Version)
 		version := Btcd
 		c.backendVersion = &version
 		return *c.backendVersion, nil
-
-	// Inspect the RPC error to ensure the method was not found, otherwise
-	// we actually ran into an error.
-	case *btcjson.RPCError:
-		if err.Code != btcjson.ErrRPCMethodNotFound.Code {
-			return 0, fmt.Errorf("unable to detect btcd version: "+
-				"%v", err)
-		}
-
 	default:
-		return 0, fmt.Errorf("unable to detect btcd version: %v", err)
+		log.Debugf("Could not detect bitcoind version from GetInfo. error: %v", err)
 	}
 
 	// Since the GetInfo method was not found, we assume the client is
@@ -1644,7 +1635,13 @@ func (c *Client) BackendVersion() (BackendVersion, error) {
 	// GetNetworkInfo.
 	networkInfo, err := c.GetNetworkInfo()
 	if err != nil {
-		return 0, fmt.Errorf("unable to detect bitcoind version: %v", err)
+		log.Debugf("Could not detect bitcoind version from GetNetworkInfo. error: %v", err)
+	}
+
+	// assume the network is beyond v0.19
+	if networkInfo == nil {
+		log.Debug("Could not detect bitcoind version. Assuming post v0.19")
+		return BitcoindPost19, nil
 	}
 
 	// Parse the bitcoind version and cache it.

From 65547419df33572771b876c40c5c23e922bc3717 Mon Sep 17 00:00:00 2001
From: Yakov Gaberman <81639957+ygaberman-px@users.noreply.github.com>
Date: Mon, 26 Jun 2023 15:06:05 -0400
Subject: [PATCH 2/2] cache backend version

---
 rpcclient/infrastructure.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rpcclient/infrastructure.go b/rpcclient/infrastructure.go
index 98d8e75218..77d0d8b73f 100644
--- a/rpcclient/infrastructure.go
+++ b/rpcclient/infrastructure.go
@@ -1641,6 +1641,8 @@ func (c *Client) BackendVersion() (BackendVersion, error) {
 	// assume the network is beyond v0.19
 	if networkInfo == nil {
 		log.Debug("Could not detect bitcoind version. Assuming post v0.19")
+		version := BitcoindPost19
+		c.backendVersion = &version
 		return BitcoindPost19, nil
 	}