pub struct BufStream<RW> { /* private fields */ }
This is supported on crate feature io-util only.
Expand description

Wraps a type that is AsyncWrite and AsyncRead, and buffers its input and output.

It can be excessively inefficient to work directly with something that implements AsyncWrite and AsyncRead. For example, every write, however small, has to traverse the syscall interface, and similarly, every read has to do the same. The BufWriter and BufReader types aid with these problems respectively, but do so in only one direction. BufStream wraps one in the other so that both directions are buffered. See their documentation for details.

Implementations

Wraps a type in both BufWriter and BufReader.

See the documentation for those types and BufStream for details.

Creates a BufStream with the specified BufReader capacity and BufWriter capacity.

See the documentation for those types and BufStream for details.

Gets a reference to the underlying I/O object.

It is inadvisable to directly read from the underlying I/O object.

Gets a mutable reference to the underlying I/O object.

It is inadvisable to directly read from the underlying I/O object.

Gets a pinned mutable reference to the underlying I/O object.

It is inadvisable to directly read from the underlying I/O object.

Consumes this BufStream, returning the underlying I/O object.

Note that any leftover data in the internal buffer is lost.

Trait Implementations

Attempts to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty. Read more

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to poll_read. Read more

Attempts to read from the AsyncRead into buf. Read more

Seek to an offset, in bytes, in the underlying stream.

The position used for seeking with SeekFrom::Current(_) is the position the underlying stream would be at if the BufStream had no internal buffer.

Seeking always discards the internal buffer, even if the seek position would otherwise fall within it. This guarantees that calling .into_inner() immediately after a seek yields the underlying reader at the same position.

See AsyncSeek for more details.

Note: In the edge case where you’re seeking with SeekFrom::Current(n) where n minus the internal buffer length overflows an i64, two seeks will be performed instead of one. If the second seek returns Err, the underlying reader will be left at the same position it would have if you called seek with SeekFrom::Current(0).

Attempts to seek to an offset, in bytes, in a stream. Read more

Waits for a seek operation to complete. Read more

Attempt to write bytes from buf into the object. Read more

Like poll_write, except that it writes from a slice of buffers. Read more

Determines if this writer has an efficient poll_write_vectored implementation. Read more

Attempts to flush the object, ensuring that any buffered data reach their destination. Read more

Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down. Read more

Formats the value using the given formatter. Read more

Performs the conversion.

Performs the conversion.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more