From 48461b67b1d9715bd7f83fd0bcbc399d6712187f Mon Sep 17 00:00:00 2001
From: "mission.liao" <missionaryliao@gmail.com>
Date: Wed, 28 Dec 2022 20:44:35 +0800
Subject: [PATCH] fix: panic when the response is nil

This change is copied from btcd@master(718d268) directly
---
 rpcclient/infrastructure.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/rpcclient/infrastructure.go b/rpcclient/infrastructure.go
index f2b6b34dde..ecd25e8d2e 100644
--- a/rpcclient/infrastructure.go
+++ b/rpcclient/infrastructure.go
@@ -809,6 +809,16 @@ func (c *Client) handleSendPostMessage(jReq *jsonRequest) {
 		jReq.responseChan <- &Response{err: err}
 		return
 	}
+	// We still want to return an error if for any reason the respone
+	// remains empty.
+	if httpResponse == nil {
+		jReq.responseChan <- &Response{
+			err: fmt.Errorf("invalid http POST response (nil), "+
+				"method: %s, id: %d, last error=%v",
+				jReq.method, jReq.id, lastErr),
+		}
+		return
+	}
 
 	// Read the raw bytes and close the response.
 	respBytes, err := ioutil.ReadAll(httpResponse.Body)