Ignore reject floods on initial connect

src/stratifier.c

@@ -1674,6 +1674,11 @@ static void add_submit(ckpool_t *ckp, stratum_instance_t *client, int diff, bool
 	int64_t next_blockid, optimal;
 	tv_t now_t;
 
+	/* Ignore successive rejects in count if they haven't submitted a valid
+	 * share yet. */
+	if (unlikely(!client->ssdc && !valid))
+		return;
+
 	tv_time(&now_t);
 
 	ck_rlock(&workbase_lock);