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-rw-r--r--urlgrabber/grabber.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/urlgrabber/grabber.py b/urlgrabber/grabber.py
index ef18d6a..04f1179 100644
--- a/urlgrabber/grabber.py
+++ b/urlgrabber/grabber.py
@@ -2418,6 +2418,7 @@ class _TH:
speed = (k1 * speed + k2 * dl_size / dl_time) / (k1 + k2)
fail = 0
elif getattr(ug_err, 'code', None) == 404:
+ if not ts: return # 1st update, avoid speed=0
fail = 0 # alive, at least
else:
fail += 1 # seems dead