Module tokio_util::io

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.
• SyncIoBridge
  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.