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28 lines
1.2 KiB
Markdown
28 lines
1.2 KiB
Markdown
# Date and time utils for HTTP.
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[](https://travis-ci.org/pyfisch/httpdate)
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[](https://crates.io/crates/httpdate)
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[](https://docs.rs/httpdate)
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Multiple HTTP header fields store timestamps.
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For example a response created on May 15, 2015 may contain the header
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`Date: Fri, 15 May 2015 15:34:21 GMT`. Since the timestamp does not
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contain any timezone or leap second information it is equvivalent to
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writing 1431696861 Unix time. Rust’s `SystemTime` is used to store
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these timestamps.
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This crate provides two public functions:
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* `parse_http_date` to parse a HTTP datetime string to a system time
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* `fmt_http_date` to format a system time to a IMF-fixdate
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In addition it exposes the `HttpDate` type that can be used to parse
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and format timestamps. Convert a sytem time to `HttpDate` and vice versa.
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The `HttpType` (8 bytes) is smaller than `SystemTime` (16 bytes) and
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using the display impl avoids a temporary allocation.
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Read the [blog post](https://pyfisch.org/blog/http-datetime-handling/) to learn
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more.
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Fuzz it by installing *cargo-fuzz* and running `cargo fuzz run fuzz_target_1`.
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