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NTP

ntpcheck

CLI and library to perform various NTP-related tasks, including:

  • replacement for ntptime and ntpdate commands
  • human-readable diagnostics for typical problems with NTP based on data from chrony/ntpd
  • server stats and peer stats taken from chrony/ntpd with output in JSON

Quick Installation

go install github.com/facebook/time/cmd/ntpcheck@latest

NTPResponder

Simple NTP server implementation with kernel timestamps support

PTP

pshark

Simple tool to read pcap/pcapng captures and parse and print PTP packets from there. Allows to test our protocol parser implementation against arbitrary tcpdump capture. Also the code shows integration with GoPacket library.

ziffy

CLI tool to triangulate datacenter switches that are not operating correctly as PTP Transparent Clocks.

ptpcheck

CLI and library to perform various PTP-related tasks, including:

  • reporting stats taken from local PTP instance in JSON format
  • running basic unicast client to showcase or debug PTP protocol internals
  • running human-readable diagnostics for basic problems with PTP based on data from local PTP client (ptp4l).
  • comparing system time with PHC time
  • mapping PHC devices to network cards and vice versa
  • sync 2 PHCs

Quick Installation

go install github.com/facebook/time/cmd/ptpcheck@latest

ptp4u

Scalable unicast PTP server.

Quick Installation

go install github.com/facebook/time/cmd/ptp4u@latest

sptp

Scalable unicast SPTP client.

Quick Installation

go install github.com/facebook/time/cmd/sptp@latest

c4u

Config generator for ptp4u.

Quick Installation

go install github.com/facebook/time/cmd/c4u@latest

fbclock

fbclock-daemon

Stateful part of fbclock (TrueTime service).

Quick Installation

go install github.com/facebook/time/cmd/fbclock-daemon@latest

fbclock-bin

Simple binary written in C that uses client part of fbclock service.

Quick Installation

cd cmd/fbclock-bin
make

Calnex

Command line tool for a Calnex Sentinel device Cli Supports several basic commands such as:

  • Firmware upgrade
  • Configuration of the device
  • Measurement data export
  • Device reboot
  • Device clear
  • Device problem report export

Quick Installation

go install github.com/facebook/time/cmd/calnex@latest

GNSS

ntripper

Service that reads RTCM3 correction data from an oscillatord Unix socket and pushes it to an NTRIP caster. Supports connecting through an HTTP CONNECT proxy with TLS client certificate authentication.

Quick Installation

go install github.com/facebook/time/cmd/ntripper@latest

Usage

# Direct connection
ntripper -caster caster.example.com:2101 -mountpoint /MOUNT01 -password secret

# Via proxy with TLS client certificate
ntripper -caster caster.example.com:2101 -mountpoint /MOUNT01 -password secret \
         -proxy proxy.example.com:8082 \
         -proxy-cert /path/to/cert.pem