Struct Zstd 

pub struct Zstd { /* private fields */ }

zstd compression wrapper for outgoing and incoming links.

Only IO-based streams are supported; wrapping a packet-based stream fails.

Add this to a ConnectorBuilder and the AcceptorBuilder of the remote endpoint to compress all links of the connection.

Implementations

impl Zstd

pub const DEFAULT_LEVEL: i32 = 1

Default compression level.

This is the fastest regular level of zstd.

pub fn new() -> Self

Creates a new zstd compression wrapper using the default level.

pub fn with_level(level: i32) -> Self

Creates a new zstd compression wrapper using the specified compression level.

Higher levels compress better but are slower. Negative levels are faster than level 1 but compress worse. The level is clamped to the range supported by zstd.

pub fn level(&self) -> i32

The compression level.

pub fn set_window_log(&mut self, window_log: Option<u32>)

Sets the base 2 logarithm of the maximum window size.

This limits the memory used for compressing and decompressing each link. Received data that was compressed using a larger window cannot be decompressed, thus both ends must use the same setting.

If None (default), the window size is determined by the compression level for compressing and the default limit of zstd (128 MiB) applies to decompressing.

Trait Implementations

impl AcceptingWrapper for Zstd

fn name(&self) -> &str

Name of the wrapper.

fn wrap<'life0, 'async_trait>( &'life0 self, stream: StreamBox, ) -> Pin<Box<dyn Future<Output = Result<StreamBox>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Wraps the incoming stream.

impl Clone for Zstd

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConnectingWrapper for Zstd

fn name(&self) -> &str

Name of the wrapper.

fn wrap<'life0, 'async_trait>( &'life0 self, stream: StreamBox, ) -> Pin<Box<dyn Future<Output = Result<StreamBox>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Wraps the outgoing stream.

impl Debug for Zstd

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Zstd

fn default() -> Self

Returns the “default value” for a type.