swift-ntp provides a Network Time Protocol (NTP) client that can be used to asynchronously synchronize clocks on the network.
This library provides a client that partially implements NTP v3 (RFC 1305). It also comes with limited support for NTP v4 (RFC 5905).
This repository contains two main library products:
NTPClient: Provides the high-levelNTPClient. This is intended for consumption by other projects.NTP: (packagelevel) Contains the core NTP protocol logic, packet parsing/serialization, and data structures. It is currently not publicly accessible.
Examples can be found in the Snippets directory.
// Instantiate the NTP Client
let ntp = NTPClient(
config: NTPClient.Config(
version: .v4 // Ensure the use of NTPv4.
),
server: "time.apple.com", // Configure the time source.
)
// Asynchronously query the time source
let response = try await ntp.query(timeout: .seconds(2))
// Get clock offset.
print("offset = \(response.offset)")Contributions are welcome! Take a look at CONTRIBUTING.md to learn how.
Security issues should be reported via the process in SECURITY.md.
The project is licensed under Apache 2.0 license repeated in LICENSE.txt.