From e1399fb1ec1f6c21f9eaa5b604deb908f5dce183 Mon Sep 17 00:00:00 2001
From: "Johan T. Halseth" <johanth@gmail.com>
Date: Tue, 30 Mar 2021 15:00:25 +0200
Subject: [PATCH] routing/router: use attempt's unique hash if set on restart

---
 routing/router.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/routing/router.go b/routing/router.go
index 7f54f915..7acfcaa8 100644
--- a/routing/router.go
+++ b/routing/router.go
@@ -609,7 +609,14 @@ func (r *ChannelRouter) Start() error {
 			for _, a := range payment.HTLCs {
 				a := a
 
+				// We check whether the individual attempts
+				// have their HTLC hash set, if not we'll fall
+				// back to the overall payment hash.
 				hash := payment.Info.PaymentHash
+				if a.Hash != nil {
+					hash = *a.Hash
+				}
+
 				htlcs[a.AttemptID] = hash
 			}