From cfbe88a3e2df5b916d4a7146fa0a83dacf88bd39 Mon Sep 17 00:00:00 2001
From: James Brown <james.brown@bldesign.com>
Date: Sat, 12 Jan 2019 13:32:05 -0700
Subject: [PATCH] Added packet flush before request in forceUpdate(). Fixes
 issue #49 in the upstream repo

---
 NTPClient.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/NTPClient.cpp b/NTPClient.cpp
index 87b7a53..668d72b 100644
--- a/NTPClient.cpp
+++ b/NTPClient.cpp
@@ -65,6 +65,10 @@ bool NTPClient::forceUpdate() {
     Serial.println("Update from NTP Server");
   #endif
 
+  // flush any existing packets
+  while(this->_udp->parsePacket() != 0)
+    this->_udp->flush();
+
   this->sendNTPPacket();
 
   // Wait till data is there or timeout...