NTP
From: https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-time.c


NTPclient
ESP NTP Client Ref Udp.h NTPClient.cpp NTPClient.h
esp32HalTime.c
Examples
Advanced Basic IsTimeSet time Client
timClt 2
NTP Stuff
IPv6–PublicPolicy BigBadInternet MITMandRoutingSecurity DNS
NetworkTimeProto Dotless Policy How-Does-NTP-Work
Routing Security IPAddrsAndTraceback Struct NTP Packet
IP-Addrs ValuingIPAddrs IPv6 Who Uses Google's DNS
MKR UDP NTP Client Connect to NTP Server DateTime Ref DateTime.cpp
BGPin2013


TimeInfo Strcture