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45 lines
2.2 KiB
Markdown
45 lines
2.2 KiB
Markdown
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Release v0.1.1
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==============
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**Breaking changes**
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* Removed the `MaxStratum` constant.
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**Deprecations**
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* Officially deprecated the `TimeV` function.
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**Internal changes**
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* Removed `minDispersion` from the `RootDistance` calculation, since the value
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was arbitrary.
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* Moved some validation into main code path so that invalid `TransmitTime` and
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`mode` responses trigger an error even when `Response.Validate` is not
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called.
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Release v0.1.0
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==============
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This is the initial release of the `ntp` package. Currently it supports the following features:
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* `Time()` to query the current time according to a remote NTP server.
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* `Query()` to query multiple pieces of time-related information from a remote NTP server.
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* `QueryWithOptions()`, which is like `Query()` but with the ability to override default query options.
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Time-related information returned by the `Query` functions includes:
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* `Time`: the time the server transmitted its response, according to the server's clock.
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* `ClockOffset`: the estimated offset of the client's clock relative to the server's clock. You may apply this offset to any local system clock reading once the query is complete.
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* `RTT`: an estimate of the round-trip-time delay between the client and the server.
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* `Precision`: the precision of the server's clock reading.
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* `Stratum`: the "stratum" level of the server, where 1 indicates a server directly connected to a reference clock, and values greater than 1 indicating the number of hops from the reference clock.
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* `ReferenceID`: A unique identifier for the NTP server that was contacted.
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* `ReferenceTime`: The time at which the server last updated its local clock setting.
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* `RootDelay`: The server's round-trip delay to the reference clock.
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* `RootDispersion`: The server's total dispersion to the referenced clock.
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* `RootDistance`: An estimate of the root synchronization distance.
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* `Leap`: The leap second indicator.
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* `MinError`: A lower bound on the clock error between the client and the server.
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* `Poll`: the maximum polling interval between successive messages on the server.
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The `Response` structure returned by the `Query` functions also contains a `Response.Validate()` function that returns an error if any of the fields returned by the server are invalid.
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