Struct lair_keystore::dependencies::tokio::io::DuplexStream
[−]pub struct DuplexStream { /* private fields */ }
Expand description
A bidirectional pipe to read and write bytes in memory.
A pair of DuplexStream
s are created together, and they act as a “channel”
that can be used as in-memory IO types. Writing to one of the pairs will
allow that data to be read from the other, and vice versa.
Closing a DuplexStream
If one end of the DuplexStream
channel is dropped, any pending reads on
the other side will continue to read data until the buffer is drained, then
they will signal EOF by returning 0 bytes. Any writes to the other side,
including pending ones (that are waiting for free space in the buffer) will
return Err(BrokenPipe)
immediately.
Example
let (mut client, mut server) = tokio::io::duplex(64);
client.write_all(b"ping").await?;
let mut buf = [0u8; 4];
server.read_exact(&mut buf).await?;
assert_eq!(&buf, b"ping");
server.write_all(b"pong").await?;
client.read_exact(&mut buf).await?;
assert_eq!(&buf, b"pong");
Trait Implementations
impl AsyncRead for DuplexStream
impl AsyncRead for DuplexStream
impl AsyncWrite for DuplexStream
impl AsyncWrite for DuplexStream
fn poll_write(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>,
buf: &[u8]
) -> Poll<Result<usize, Error>>
fn poll_write(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>,
buf: &[u8]
) -> Poll<Result<usize, Error>>
Attempt to write bytes from buf
into the object. Read more
fn poll_flush(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>
) -> Poll<Result<(), Error>>
fn poll_flush(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>
) -> Poll<Result<(), Error>>
Attempts to flush the object, ensuring that any buffered data reach their destination. Read more
fn poll_shutdown(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>
) -> Poll<Result<(), Error>>
fn poll_shutdown(
self: Pin<&mut DuplexStream>,
cx: &mut Context<'_>
) -> Poll<Result<(), Error>>
Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down. Read more
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[IoSlice<'_>]
) -> Poll<Result<usize, Error>>
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[IoSlice<'_>]
) -> Poll<Result<usize, Error>>
Like poll_write
, except that it writes from a slice of buffers. Read more
fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
Determines if this writer has an efficient poll_write_vectored
implementation. Read more
impl Debug for DuplexStream
impl Debug for DuplexStream
impl Drop for DuplexStream
impl Drop for DuplexStream
Auto Trait Implementations
impl !RefUnwindSafe for DuplexStream
impl Send for DuplexStream
impl Sync for DuplexStream
impl Unpin for DuplexStream
impl !UnwindSafe for DuplexStream
Blanket Implementations
impl<R> AsyncReadExt for R where
R: AsyncRead + ?Sized,
impl<R> AsyncReadExt for R where
R: AsyncRead + ?Sized,
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: AsyncRead,
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: AsyncRead,
Creates a new AsyncRead
instance that chains this stream with
next
. Read more
fn read(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self> where
Self: Unpin,
fn read(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self> where
Self: Unpin,
Pulls some bytes from this source into the specified buffer, returning how many bytes were read. Read more
fn read_buf<B>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B> where
Self: Unpin,
B: BufMut,
fn read_buf<B>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B> where
Self: Unpin,
B: BufMut,
Pulls some bytes from this source into the specified buffer, advancing the buffer’s internal cursor. Read more
fn read_exact(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self> where
Self: Unpin,
fn read_exact(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self> where
Self: Unpin,
Reads the exact number of bytes required to fill buf
. Read more
fn read_u8(&'a mut self) -> ReadU8<&'a mut Self> where
Self: Unpin,
fn read_u8(&'a mut self) -> ReadU8<&'a mut Self> where
Self: Unpin,
Reads an unsigned 8 bit integer from the underlying reader. Read more
fn read_i8(&'a mut self) -> ReadI8<&'a mut Self> where
Self: Unpin,
fn read_i8(&'a mut self) -> ReadI8<&'a mut Self> where
Self: Unpin,
Reads a signed 8 bit integer from the underlying reader. Read more
fn read_u16(&'a mut self) -> ReadU16<&'a mut Self> where
Self: Unpin,
fn read_u16(&'a mut self) -> ReadU16<&'a mut Self> where
Self: Unpin,
Reads an unsigned 16-bit integer in big-endian order from the underlying reader. Read more
fn read_i16(&'a mut self) -> ReadI16<&'a mut Self> where
Self: Unpin,
fn read_i16(&'a mut self) -> ReadI16<&'a mut Self> where
Self: Unpin,
Reads a signed 16-bit integer in big-endian order from the underlying reader. Read more
fn read_u32(&'a mut self) -> ReadU32<&'a mut Self> where
Self: Unpin,
fn read_u32(&'a mut self) -> ReadU32<&'a mut Self> where
Self: Unpin,
Reads an unsigned 32-bit integer in big-endian order from the underlying reader. Read more
fn read_i32(&'a mut self) -> ReadI32<&'a mut Self> where
Self: Unpin,
fn read_i32(&'a mut self) -> ReadI32<&'a mut Self> where
Self: Unpin,
Reads a signed 32-bit integer in big-endian order from the underlying reader. Read more
fn read_u64(&'a mut self) -> ReadU64<&'a mut Self> where
Self: Unpin,
fn read_u64(&'a mut self) -> ReadU64<&'a mut Self> where
Self: Unpin,
Reads an unsigned 64-bit integer in big-endian order from the underlying reader. Read more
fn read_i64(&'a mut self) -> ReadI64<&'a mut Self> where
Self: Unpin,
fn read_i64(&'a mut self) -> ReadI64<&'a mut Self> where
Self: Unpin,
Reads an signed 64-bit integer in big-endian order from the underlying reader. Read more
fn read_u128(&'a mut self) -> ReadU128<&'a mut Self> where
Self: Unpin,
fn read_u128(&'a mut self) -> ReadU128<&'a mut Self> where
Self: Unpin,
Reads an unsigned 128-bit integer in big-endian order from the underlying reader. Read more
fn read_i128(&'a mut self) -> ReadI128<&'a mut Self> where
Self: Unpin,
fn read_i128(&'a mut self) -> ReadI128<&'a mut Self> where
Self: Unpin,
Reads an signed 128-bit integer in big-endian order from the underlying reader. Read more
fn read_f32(&'a mut self) -> ReadF32<&'a mut Self> where
Self: Unpin,
fn read_f32(&'a mut self) -> ReadF32<&'a mut Self> where
Self: Unpin,
Reads an 32-bit floating point type in big-endian order from the underlying reader. Read more
fn read_f64(&'a mut self) -> ReadF64<&'a mut Self> where
Self: Unpin,
fn read_f64(&'a mut self) -> ReadF64<&'a mut Self> where
Self: Unpin,
Reads an 64-bit floating point type in big-endian order from the underlying reader. Read more
fn read_u16_le(&'a mut self) -> ReadU16Le<&'a mut Self> where
Self: Unpin,
fn read_u16_le(&'a mut self) -> ReadU16Le<&'a mut Self> where
Self: Unpin,
Reads an unsigned 16-bit integer in little-endian order from the underlying reader. Read more
fn read_i16_le(&'a mut self) -> ReadI16Le<&'a mut Self> where
Self: Unpin,
fn read_i16_le(&'a mut self) -> ReadI16Le<&'a mut Self> where
Self: Unpin,
Reads a signed 16-bit integer in little-endian order from the underlying reader. Read more
fn read_u32_le(&'a mut self) -> ReadU32Le<&'a mut Self> where
Self: Unpin,
fn read_u32_le(&'a mut self) -> ReadU32Le<&'a mut Self> where
Self: Unpin,
Reads an unsigned 32-bit integer in little-endian order from the underlying reader. Read more
fn read_i32_le(&'a mut self) -> ReadI32Le<&'a mut Self> where
Self: Unpin,
fn read_i32_le(&'a mut self) -> ReadI32Le<&'a mut Self> where
Self: Unpin,
Reads a signed 32-bit integer in little-endian order from the underlying reader. Read more
fn read_u64_le(&'a mut self) -> ReadU64Le<&'a mut Self> where
Self: Unpin,
fn read_u64_le(&'a mut self) -> ReadU64Le<&'a mut Self> where
Self: Unpin,
Reads an unsigned 64-bit integer in little-endian order from the underlying reader. Read more
fn read_i64_le(&'a mut self) -> ReadI64Le<&'a mut Self> where
Self: Unpin,
fn read_i64_le(&'a mut self) -> ReadI64Le<&'a mut Self> where
Self: Unpin,
Reads an signed 64-bit integer in little-endian order from the underlying reader. Read more
fn read_u128_le(&'a mut self) -> ReadU128Le<&'a mut Self> where
Self: Unpin,
fn read_u128_le(&'a mut self) -> ReadU128Le<&'a mut Self> where
Self: Unpin,
Reads an unsigned 128-bit integer in little-endian order from the underlying reader. Read more
fn read_i128_le(&'a mut self) -> ReadI128Le<&'a mut Self> where
Self: Unpin,
fn read_i128_le(&'a mut self) -> ReadI128Le<&'a mut Self> where
Self: Unpin,
Reads an signed 128-bit integer in little-endian order from the underlying reader. Read more
fn read_f32_le(&'a mut self) -> ReadF32Le<&'a mut Self> where
Self: Unpin,
fn read_f32_le(&'a mut self) -> ReadF32Le<&'a mut Self> where
Self: Unpin,
Reads an 32-bit floating point type in little-endian order from the underlying reader. Read more
fn read_f64_le(&'a mut self) -> ReadF64Le<&'a mut Self> where
Self: Unpin,
fn read_f64_le(&'a mut self) -> ReadF64Le<&'a mut Self> where
Self: Unpin,
Reads an 64-bit floating point type in little-endian order from the underlying reader. Read more
fn read_to_end(
&'a mut self,
buf: &'a mut Vec<u8, Global>
) -> ReadToEnd<'a, Self> where
Self: Unpin,
fn read_to_end(
&'a mut self,
buf: &'a mut Vec<u8, Global>
) -> ReadToEnd<'a, Self> where
Self: Unpin,
Reads all bytes until EOF in this source, placing them into buf
. Read more
fn read_to_string(&'a mut self, dst: &'a mut String) -> ReadToString<'a, Self> where
Self: Unpin,
fn read_to_string(&'a mut self, dst: &'a mut String) -> ReadToString<'a, Self> where
Self: Unpin,
Reads all bytes until EOF in this source, appending them to buf
. Read more
impl<W> AsyncWriteExt for W where
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for W where
W: AsyncWrite + ?Sized,
fn write(&'a mut self, src: &'a [u8]) -> Write<'a, Self> where
Self: Unpin,
fn write(&'a mut self, src: &'a [u8]) -> Write<'a, Self> where
Self: Unpin,
Writes a buffer into this writer, returning how many bytes were written. Read more
fn write_vectored(
&'a mut self,
bufs: &'a [IoSlice<'b>]
) -> WriteVectored<'a, 'b, Self> where
Self: Unpin,
fn write_vectored(
&'a mut self,
bufs: &'a [IoSlice<'b>]
) -> WriteVectored<'a, 'b, Self> where
Self: Unpin,
fn write_buf<B>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B> where
Self: Unpin,
B: Buf,
fn write_buf<B>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B> where
Self: Unpin,
B: Buf,
Writes a buffer into this writer, advancing the buffer’s internal cursor. Read more
fn write_all_buf<B>(&'a mut self, src: &'a mut B) -> WriteAllBuf<'a, Self, B> where
Self: Unpin,
B: Buf,
fn write_all_buf<B>(&'a mut self, src: &'a mut B) -> WriteAllBuf<'a, Self, B> where
Self: Unpin,
B: Buf,
Attempts to write an entire buffer into this writer. Read more
fn write_all(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self> where
Self: Unpin,
fn write_all(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self> where
Self: Unpin,
Attempts to write an entire buffer into this writer. Read more
fn write_u8(&'a mut self, n: u8) -> WriteU8<&'a mut Self> where
Self: Unpin,
fn write_u8(&'a mut self, n: u8) -> WriteU8<&'a mut Self> where
Self: Unpin,
Writes an unsigned 8-bit integer to the underlying writer. Read more
fn write_i8(&'a mut self, n: i8) -> WriteI8<&'a mut Self> where
Self: Unpin,
fn write_i8(&'a mut self, n: i8) -> WriteI8<&'a mut Self> where
Self: Unpin,
Writes an unsigned 8-bit integer to the underlying writer. Read more
fn write_u16(&'a mut self, n: u16) -> WriteU16<&'a mut Self> where
Self: Unpin,
fn write_u16(&'a mut self, n: u16) -> WriteU16<&'a mut Self> where
Self: Unpin,
Writes an unsigned 16-bit integer in big-endian order to the underlying writer. Read more
fn write_i16(&'a mut self, n: i16) -> WriteI16<&'a mut Self> where
Self: Unpin,
fn write_i16(&'a mut self, n: i16) -> WriteI16<&'a mut Self> where
Self: Unpin,
Writes a signed 16-bit integer in big-endian order to the underlying writer. Read more
fn write_u32(&'a mut self, n: u32) -> WriteU32<&'a mut Self> where
Self: Unpin,
fn write_u32(&'a mut self, n: u32) -> WriteU32<&'a mut Self> where
Self: Unpin,
Writes an unsigned 32-bit integer in big-endian order to the underlying writer. Read more
fn write_i32(&'a mut self, n: i32) -> WriteI32<&'a mut Self> where
Self: Unpin,
fn write_i32(&'a mut self, n: i32) -> WriteI32<&'a mut Self> where
Self: Unpin,
Writes a signed 32-bit integer in big-endian order to the underlying writer. Read more
fn write_u64(&'a mut self, n: u64) -> WriteU64<&'a mut Self> where
Self: Unpin,
fn write_u64(&'a mut self, n: u64) -> WriteU64<&'a mut Self> where
Self: Unpin,
Writes an unsigned 64-bit integer in big-endian order to the underlying writer. Read more
fn write_i64(&'a mut self, n: i64) -> WriteI64<&'a mut Self> where
Self: Unpin,
fn write_i64(&'a mut self, n: i64) -> WriteI64<&'a mut Self> where
Self: Unpin,
Writes an signed 64-bit integer in big-endian order to the underlying writer. Read more
fn write_u128(&'a mut self, n: u128) -> WriteU128<&'a mut Self> where
Self: Unpin,
fn write_u128(&'a mut self, n: u128) -> WriteU128<&'a mut Self> where
Self: Unpin,
Writes an unsigned 128-bit integer in big-endian order to the underlying writer. Read more
fn write_i128(&'a mut self, n: i128) -> WriteI128<&'a mut Self> where
Self: Unpin,
fn write_i128(&'a mut self, n: i128) -> WriteI128<&'a mut Self> where
Self: Unpin,
Writes an signed 128-bit integer in big-endian order to the underlying writer. Read more
fn write_f32(&'a mut self, n: f32) -> WriteF32<&'a mut Self> where
Self: Unpin,
fn write_f32(&'a mut self, n: f32) -> WriteF32<&'a mut Self> where
Self: Unpin,
Writes an 32-bit floating point type in big-endian order to the underlying writer. Read more
fn write_f64(&'a mut self, n: f64) -> WriteF64<&'a mut Self> where
Self: Unpin,
fn write_f64(&'a mut self, n: f64) -> WriteF64<&'a mut Self> where
Self: Unpin,
Writes an 64-bit floating point type in big-endian order to the underlying writer. Read more
fn write_u16_le(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self> where
Self: Unpin,
fn write_u16_le(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self> where
Self: Unpin,
Writes an unsigned 16-bit integer in little-endian order to the underlying writer. Read more
fn write_i16_le(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self> where
Self: Unpin,
fn write_i16_le(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self> where
Self: Unpin,
Writes a signed 16-bit integer in little-endian order to the underlying writer. Read more
fn write_u32_le(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self> where
Self: Unpin,
fn write_u32_le(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self> where
Self: Unpin,
Writes an unsigned 32-bit integer in little-endian order to the underlying writer. Read more
fn write_i32_le(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self> where
Self: Unpin,
fn write_i32_le(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self> where
Self: Unpin,
Writes a signed 32-bit integer in little-endian order to the underlying writer. Read more
fn write_u64_le(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self> where
Self: Unpin,
fn write_u64_le(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self> where
Self: Unpin,
Writes an unsigned 64-bit integer in little-endian order to the underlying writer. Read more
fn write_i64_le(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self> where
Self: Unpin,
fn write_i64_le(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self> where
Self: Unpin,
Writes an signed 64-bit integer in little-endian order to the underlying writer. Read more
fn write_u128_le(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self> where
Self: Unpin,
fn write_u128_le(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self> where
Self: Unpin,
Writes an unsigned 128-bit integer in little-endian order to the underlying writer. Read more
fn write_i128_le(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self> where
Self: Unpin,
fn write_i128_le(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self> where
Self: Unpin,
Writes an signed 128-bit integer in little-endian order to the underlying writer. Read more
fn write_f32_le(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self> where
Self: Unpin,
fn write_f32_le(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self> where
Self: Unpin,
Writes an 32-bit floating point type in little-endian order to the underlying writer. Read more
fn write_f64_le(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self> where
Self: Unpin,
fn write_f64_le(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self> where
Self: Unpin,
Writes an 64-bit floating point type in little-endian order to the underlying writer. Read more
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
impl<T> Pointable for T
impl<T> Pointable for T
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
T: Future, type Output = <T as Future>::Output;
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more