Struct tokio_util::io::InspectWriter
source · pub struct InspectWriter<W, F> { /* private fields */ }Expand description
An adapter that lets you inspect the data that’s being written.
This is useful for things like hashing data as it’s written out.
Implementations§
source§impl<W, F> InspectWriter<W, F>
impl<W, F> InspectWriter<W, F>
sourcepub fn new(writer: W, f: F) -> InspectWriter<W, F>where
W: AsyncWrite,
F: FnMut(&[u8]),
pub fn new(writer: W, f: F) -> InspectWriter<W, F>where W: AsyncWrite, F: FnMut(&[u8]),
Create a new InspectWriter, wrapping write and calling f for the
data successfully written by each write call.
The closure f will never be called with an empty slice. A vectored
write can result in multiple calls to f - at most one call to f per
buffer supplied to poll_write_vectored.
sourcepub fn into_inner(self) -> W
pub fn into_inner(self) -> W
Consumes the InspectWriter, returning the wrapped writer
Trait Implementations§
source§impl<W: AsyncWrite, F: FnMut(&[u8])> AsyncWrite for InspectWriter<W, F>
impl<W: AsyncWrite, F: FnMut(&[u8])> AsyncWrite for InspectWriter<W, F>
source§fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8]
) -> Poll<Result<usize>>
fn poll_write( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8] ) -> Poll<Result<usize>>
Attempt to write bytes from
buf into the object. Read moresource§fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
Attempts to flush the object, ensuring that any buffered data reach
their destination. Read more
source§fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
Initiates or attempts to shut down this writer, returning success when
the I/O connection has completely shut down. Read more
source§fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[IoSlice<'_>]
) -> Poll<Result<usize>>
fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>] ) -> Poll<Result<usize>>
Like
poll_write, except that it writes from a slice of buffers. Read moresource§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
Determines if this writer has an efficient
poll_write_vectored
implementation. Read moreimpl<'__pin, W, F> Unpin for InspectWriter<W, F>where __Origin<'__pin, W, F>: Unpin,
Auto Trait Implementations§
impl<W, F> RefUnwindSafe for InspectWriter<W, F>where F: RefUnwindSafe, W: RefUnwindSafe,
impl<W, F> Send for InspectWriter<W, F>where F: Send, W: Send,
impl<W, F> Sync for InspectWriter<W, F>where F: Sync, W: Sync,
impl<W, F> UnwindSafe for InspectWriter<W, F>where F: UnwindSafe, W: UnwindSafe,
Blanket Implementations§
source§impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for Wwhere W: AsyncWrite + ?Sized,
source§fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where
Self: Unpin,
fn write<'a>(&'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
source§fn write_vectored<'a, 'b>(
&'a mut self,
bufs: &'a [IoSlice<'b>]
) -> WriteVectored<'a, 'b, Self>where
Self: Unpin,
fn write_vectored<'a, 'b>( &'a mut self, bufs: &'a [IoSlice<'b>] ) -> WriteVectored<'a, 'b, Self>where Self: Unpin,
source§fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where
Self: Sized + Unpin,
B: Buf,
fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,
Writes a buffer into this writer, advancing the buffer’s internal
cursor. Read more
source§fn write_all_buf<B, 'a>(
&'a mut self,
src: &'a mut B
) -> WriteAllBuf<'a, Self, B>where
Self: Sized + Unpin,
B: Buf,
fn write_all_buf<B, 'a>( &'a mut self, src: &'a mut B ) -> WriteAllBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,
Attempts to write an entire buffer into this writer. Read more
source§fn write_all<'a>(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self>where
Self: Unpin,
fn write_all<'a>(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self>where Self: Unpin,
Attempts to write an entire buffer into this writer. Read more
source§fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where
Self: Unpin,
fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where Self: Unpin,
Writes an unsigned 8-bit integer to the underlying writer. Read more
source§fn write_i8<'a>(&'a mut self, n: i8) -> WriteI8<&'a mut Self>where
Self: Unpin,
fn write_i8<'a>(&'a mut self, n: i8) -> WriteI8<&'a mut Self>where Self: Unpin,
Writes a signed 8-bit integer to the underlying writer. Read more
source§fn write_u16<'a>(&'a mut self, n: u16) -> WriteU16<&'a mut Self>where
Self: Unpin,
fn write_u16<'a>(&'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
source§fn write_i16<'a>(&'a mut self, n: i16) -> WriteI16<&'a mut Self>where
Self: Unpin,
fn write_i16<'a>(&'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
source§fn write_u32<'a>(&'a mut self, n: u32) -> WriteU32<&'a mut Self>where
Self: Unpin,
fn write_u32<'a>(&'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
source§fn write_i32<'a>(&'a mut self, n: i32) -> WriteI32<&'a mut Self>where
Self: Unpin,
fn write_i32<'a>(&'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
source§fn write_u64<'a>(&'a mut self, n: u64) -> WriteU64<&'a mut Self>where
Self: Unpin,
fn write_u64<'a>(&'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
source§fn write_i64<'a>(&'a mut self, n: i64) -> WriteI64<&'a mut Self>where
Self: Unpin,
fn write_i64<'a>(&'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
source§fn write_u128<'a>(&'a mut self, n: u128) -> WriteU128<&'a mut Self>where
Self: Unpin,
fn write_u128<'a>(&'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
source§fn write_i128<'a>(&'a mut self, n: i128) -> WriteI128<&'a mut Self>where
Self: Unpin,
fn write_i128<'a>(&'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
source§fn write_f32<'a>(&'a mut self, n: f32) -> WriteF32<&'a mut Self>where
Self: Unpin,
fn write_f32<'a>(&'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
source§fn write_f64<'a>(&'a mut self, n: f64) -> WriteF64<&'a mut Self>where
Self: Unpin,
fn write_f64<'a>(&'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
source§fn write_u16_le<'a>(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self>where
Self: Unpin,
fn write_u16_le<'a>(&'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
source§fn write_i16_le<'a>(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self>where
Self: Unpin,
fn write_i16_le<'a>(&'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
source§fn write_u32_le<'a>(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self>where
Self: Unpin,
fn write_u32_le<'a>(&'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
source§fn write_i32_le<'a>(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self>where
Self: Unpin,
fn write_i32_le<'a>(&'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
source§fn write_u64_le<'a>(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self>where
Self: Unpin,
fn write_u64_le<'a>(&'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
source§fn write_i64_le<'a>(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self>where
Self: Unpin,
fn write_i64_le<'a>(&'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
source§fn write_u128_le<'a>(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self>where
Self: Unpin,
fn write_u128_le<'a>(&'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
source§fn write_i128_le<'a>(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self>where
Self: Unpin,
fn write_i128_le<'a>(&'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
source§fn write_f32_le<'a>(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self>where
Self: Unpin,
fn write_f32_le<'a>(&'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
source§fn write_f64_le<'a>(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self>where
Self: Unpin,
fn write_f64_le<'a>(&'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
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more