Module io

Available on crate feature io only.

Helpers for IO related tasks.

The stream types are often used in combination with hyper or reqwest, as they allow converting between a hyper Body and AsyncRead.

The SyncIoBridge type converts from the world of async I/O to synchronous I/O; this may often come up when using synchronous APIs inside tokio::task::spawn_blocking.

Structs

CopyToBytes

A helper that wraps a Sink<Bytes> and converts it into a Sink<&'a [u8]> by copying each byte slice into an owned Bytes.

InspectReader

An adapter that lets you inspect the data that’s being read.

InspectWriter

An adapter that lets you inspect the data that’s being written.

ReaderStream

Convert an AsyncRead into a Stream of byte chunks.

SinkWriter

Convert a Sink of byte chunks into an AsyncWrite.

StreamReader

Convert a Stream of byte chunks into an AsyncRead.

SyncIoBridgeio-util

Use a tokio::io::AsyncRead synchronously as a std::io::Read or a tokio::io::AsyncWrite as a std::io::Write.

Functions

poll_read_buf

Try to read data from an AsyncRead into an implementer of the BufMut trait.

poll_write_buf

Try to write data from an implementer of the Buf trait to an AsyncWrite, advancing the buffer’s internal cursor.

read_buf

Read data from an AsyncRead into an implementer of the BufMut trait.