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42 lines
1.3 KiB
Rust
42 lines
1.3 KiB
Rust
/// Body size hint.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub enum BodySize {
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/// Implicitly empty body.
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///
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/// Will omit the Content-Length header. Used for responses to certain methods (e.g., `HEAD`) or
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/// with particular status codes (e.g., 204 No Content). Consumers that read this as a body size
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/// hint are allowed to make optimizations that skip reading or writing the payload.
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None,
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/// Known size body.
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///
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/// Will write `Content-Length: N` header.
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Sized(u64),
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/// Unknown size body.
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///
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/// Will not write Content-Length header. Can be used with chunked Transfer-Encoding.
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Stream,
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}
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impl BodySize {
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/// Equivalent to `BodySize::Sized(0)`;
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pub const ZERO: Self = Self::Sized(0);
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/// Returns true if size hint indicates omitted or empty body.
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///
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/// Streams will return false because it cannot be known without reading the stream.
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///
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/// ```
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/// # use actix_http::body::BodySize;
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/// assert!(BodySize::None.is_eof());
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/// assert!(BodySize::Sized(0).is_eof());
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///
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/// assert!(!BodySize::Sized(64).is_eof());
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/// assert!(!BodySize::Stream.is_eof());
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/// ```
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pub fn is_eof(&self) -> bool {
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matches!(self, BodySize::None | BodySize::Sized(0))
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}
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}
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