From f5d0a4ffe1f57e7c5f3482ac10bb04dd755cc076 Mon Sep 17 00:00:00 2001
From: "Joseph C. Lehner" <joseph.c.lehner@gmail.com>
Date: Thu, 5 Sep 2019 15:26:23 +0200
Subject: [PATCH] Revert "Prevent block counter rollover"

This reverts commit 49b156879aa32332adbec94e0a21c37b8b4485a1.
---
 tftp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tftp.c b/tftp.c
index f81f877..06258dc 100644
--- a/tftp.c
+++ b/tftp.c
@@ -400,8 +400,9 @@ int tftp_put(struct nmrpd_args *args)
 
 		if (timeouts || ackblock == block) {
 			if (!timeouts) {
-				if (block < UINT16_MAX) {
-					++block;
+				if (++block == 0) {
+					// rollover; skip to block 1
+					block = 1;
 				}
 
 				pkt_mknum(tx, DATA);
-- 
2.25.1