From bd6f8d56b4756ec476482297e9ba0c25f804b8bf Mon Sep 17 00:00:00 2001
From: PJ <peterjan.brone@gmail.com>
Date: Mon, 18 Dec 2023 22:25:10 +0100
Subject: [PATCH] worker: fix panic

---
 worker/download.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/worker/download.go b/worker/download.go
index c75687346..88d554d41 100644
--- a/worker/download.go
+++ b/worker/download.go
@@ -930,8 +930,14 @@ func (s *slabDownload) nextRequest(ctx context.Context, resps *sectorResponses,
 			return nil
 		}
 
+		// select the fastest host
+		fastest := s.mgr.fastest(hosts)
+		if fastest == (types.PublicKey{}) {
+			return nil // can happen if downloader got stopped
+		}
+
 		// make the fastest host the current host
-		s.curr = s.mgr.fastest(hosts)
+		s.curr = fastest
 		s.used[s.curr] = struct{}{}
 	}