From 0d077a536f134a68aaeb65b82f3925c985ea5b79 Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Sat, 22 Feb 2025 22:54:31 +0100
Subject: [PATCH] Do not allow more than 10 NTP requests per second to be
 served

Signed-off-by: DL6ER <dl6er@dl6er.de>
---
 src/ntp/server.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/ntp/server.c b/src/ntp/server.c
index a78240dfc..cd882bdb0 100644
--- a/src/ntp/server.c
+++ b/src/ntp/server.c
@@ -42,6 +42,8 @@
 #include "enums.h"
 // threads
 #include "signals.h"
+// sleepms()
+#include "timers.h"
 
 uint64_t ntp_last_sync = 0u;
 uint32_t ntp_root_delay = 0u;
@@ -269,6 +271,10 @@ static void request_process_loop(const int fd, const char *ipstr, const int prot
 		// Handle the request
 		ntp_reply(fd, &src_addr, src_addrlen, buf, &recv_time);
 		log_debug(DEBUG_NTP, "NTP reply sent");
+
+		// Sleep for 100 msec, this allows no more than 10 requests per
+		// second
+		sleepms(100);
 	}
 }