Struct cap_std::net::TcpStream

pub struct TcpStream { /* private fields */ }

Available on non-WASI only.

A TCP stream between a local and a remote socket.

This corresponds to std::net::TcpStream.

This TcpStream has no connect method. To create a TcpStream, first obtain a Pool permitting the address, and then call Pool::connect_tcp_stream.

Implementations

impl TcpStream

pub fn from_std(std: TcpStream) -> Self

Constructs a new instance of Self from the given std::net::TcpStream.

This grants access the resources the std::net::TcpStream instance already has access to.

Examples found in repository

src/net/tcp_stream.rs (line 75)

    pub fn try_clone(&self) -> io::Result<Self> {
        let tcp_stream = self.std.try_clone()?;
        Ok(Self::from_std(tcp_stream))
    }

    /// Sets the read timeout to the timeout specified.
    ///
    /// This corresponds to [`std::net::TcpStream::set_read_timeout`].
    #[inline]
    pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
        self.std.set_read_timeout(dur)
    }

    /// Sets the write timeout to the timeout specified.
    ///
    /// This corresponds to [`std::net::TcpStream::set_write_timeout`].
    #[inline]
    pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
        self.std.set_write_timeout(dur)
    }

    /// Returns the read timeout of this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::read_timeout`].
    #[inline]
    pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
        self.std.read_timeout()
    }

    /// Returns the write timeout of this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::write_timeout`].
    #[inline]
    pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
        self.std.write_timeout()
    }

    /// Receives data on the socket from the remote address to which it is
    /// connected, without removing that data from the queue.
    ///
    /// This corresponds to [`std::net::TcpStream::peek`].
    #[inline]
    pub fn peek(&self, buf: &mut [u8]) -> io::Result<usize> {
        self.std.peek(buf)
    }

    /// Sets the value of the `TCP_NODELAY` option on this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::set_nodelay`].
    #[inline]
    pub fn set_nodelay(&self, nodelay: bool) -> io::Result<()> {
        self.std.set_nodelay(nodelay)
    }

    /// Gets the value of the `TCP_NODELAY` option on this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::nodelay`].
    #[inline]
    pub fn nodelay(&self) -> io::Result<bool> {
        self.std.nodelay()
    }

    /// Sets the value for the `IP_TTL` option on this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::set_ttl`].
    #[inline]
    pub fn set_ttl(&self, ttl: u32) -> io::Result<()> {
        self.std.set_ttl(ttl)
    }

    /// Gets the value of the `IP_TTL` option for this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::ttl`].
    #[inline]
    pub fn ttl(&self) -> io::Result<u32> {
        self.std.ttl()
    }

    /// Gets the value of the `SO_ERROR` option on this socket.
    ///
    /// This corresponds to [`std::net::TcpStream::take_error`].
    #[inline]
    pub fn take_error(&self) -> io::Result<Option<io::Error>> {
        self.std.take_error()
    }

    /// Moves this TCP stream into or out of nonblocking mode.
    ///
    /// This corresponds to [`std::net::TcpStream::set_nonblocking`].
    #[inline]
    pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> {
        self.std.set_nonblocking(nonblocking)
    }
}

// Safety: `SocketlikeViewType` is implemented for `std`'s socket types.
unsafe impl io_lifetimes::views::SocketlikeViewType for TcpStream {}

#[cfg(not(windows))]
impl FromRawFd for TcpStream {
    #[inline]
    unsafe fn from_raw_fd(fd: RawFd) -> Self {
        Self::from_std(net::TcpStream::from_raw_fd(fd))
    }
}

#[cfg(not(windows))]
impl From<OwnedFd> for TcpStream {
    #[inline]
    fn from(fd: OwnedFd) -> Self {
        Self::from_std(net::TcpStream::from(fd))
    }

src/net/incoming.rs (line 32)

    fn next(&mut self) -> Option<Self::Item> {
        self.std.next().map(|result| {
            let tcp_stream = result?;
            Ok(TcpStream::from_std(tcp_stream))
        })
    }

src/net/tcp_listener.rs (line 67)

    pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> {
        self.std
            .accept()
            .map(|(tcp_stream, addr)| (TcpStream::from_std(tcp_stream), addr))
    }

src/net/pool.rs (line 86)

    pub fn connect_tcp_stream<A: ToSocketAddrs>(&self, addr: A) -> io::Result<TcpStream> {
        let addrs = addr.to_socket_addrs()?;

        let mut last_err = None;
        for addr in addrs {
            self.cap.check_addr(&addr)?;
            // TODO: when compiling for WASI, use WASI-specific methods instead
            match net::TcpStream::connect(addr) {
                Ok(tcp_stream) => return Ok(TcpStream::from_std(tcp_stream)),
                Err(e) => last_err = Some(e),
            }
        }
        match last_err {
            Some(e) => Err(e),
            None => Err(net::TcpStream::connect(NO_SOCKET_ADDRS).unwrap_err()),
        }
    }

    /// Opens a TCP connection to a remote host with a timeout.
    ///
    /// This corresponds to [`std::net::TcpStream::connect_timeout`].
    #[inline]
    pub fn connect_timeout_tcp_stream(
        &self,
        addr: &SocketAddr,
        timeout: Duration,
    ) -> io::Result<TcpStream> {
        self.cap.check_addr(addr)?;
        let tcp_stream = net::TcpStream::connect_timeout(addr, timeout)?;
        Ok(TcpStream::from_std(tcp_stream))
    }

pub fn peer_addr(&self) -> Result<SocketAddr>

Returns the socket address of the remote peer of this TCP connection.

This corresponds to std::net::TcpStream::peer_addr.

pub fn local_addr(&self) -> Result<SocketAddr>

Returns the local socket address of this listener.

This corresponds to std::net::TcpStream::local_addr.

pub fn shutdown(&self, how: Shutdown) -> Result<()>

Shuts down the read, write, or both halves of this connection.

This corresponds to std::net::TcpStream::shutdown.

pub fn try_clone(&self) -> Result<Self>

Creates a new independently owned handle to the underlying socket.

This corresponds to std::net::TcpStream::try_clone.

pub fn set_read_timeout(&self, dur: Option<Duration>) -> Result<()>

Sets the read timeout to the timeout specified.

This corresponds to std::net::TcpStream::set_read_timeout.

pub fn set_write_timeout(&self, dur: Option<Duration>) -> Result<()>

Sets the write timeout to the timeout specified.

This corresponds to std::net::TcpStream::set_write_timeout.

pub fn read_timeout(&self) -> Result<Option<Duration>>

Returns the read timeout of this socket.

This corresponds to std::net::TcpStream::read_timeout.

pub fn write_timeout(&self) -> Result<Option<Duration>>

Returns the write timeout of this socket.

This corresponds to std::net::TcpStream::write_timeout.

pub fn peek(&self, buf: &mut [u8]) -> Result<usize>

Receives data on the socket from the remote address to which it is connected, without removing that data from the queue.

This corresponds to std::net::TcpStream::peek.

pub fn set_nodelay(&self, nodelay: bool) -> Result<()>

Sets the value of the TCP_NODELAY option on this socket.

This corresponds to std::net::TcpStream::set_nodelay.

pub fn nodelay(&self) -> Result<bool>

Gets the value of the TCP_NODELAY option on this socket.

This corresponds to std::net::TcpStream::nodelay.

pub fn set_ttl(&self, ttl: u32) -> Result<()>

Sets the value for the IP_TTL option on this socket.

This corresponds to std::net::TcpStream::set_ttl.

pub fn ttl(&self) -> Result<u32>

Gets the value of the IP_TTL option for this socket.

This corresponds to std::net::TcpStream::ttl.

pub fn take_error(&self) -> Result<Option<Error>>

Gets the value of the SO_ERROR option on this socket.

This corresponds to std::net::TcpStream::take_error.

pub fn set_nonblocking(&self, nonblocking: bool) -> Result<()>

Moves this TCP stream into or out of nonblocking mode.

This corresponds to std::net::TcpStream::set_nonblocking.

Trait Implementations

impl AsFd for TcpStream

Available on non-Windows only.

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl AsRawFd for TcpStream

Available on non-Windows only.

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for TcpStream

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<OwnedFd> for TcpStream

Available on non-Windows only.

fn from(fd: OwnedFd) -> Self

Converts to this type from the input type.

impl From<TcpStream> for OwnedFd

Available on non-Windows only.

fn from(stream: TcpStream) -> OwnedFd

Converts to this type from the input type.

impl FromRawFd for TcpStream

Available on non-Windows only.

unsafe fn from_raw_fd(fd: RawFd) -> Self

Constructs a new instance of Self from the given raw file descriptor.

impl IntoRawFd for TcpStream

Available on non-Windows only.

fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor.

impl Read for &TcpStream

fn read(&mut self, buf: &mut [u8]) -> Result<usize>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>

Like read, except that it reads into a slice of buffers.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>

Read the exact number of bytes required to fill buf.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize>

Read all bytes until EOF in this source, appending them to buf.

fn is_read_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Read the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Selfwhere
    Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>where
    Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>where
    R: Read,
    Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>where
    Self: Sized,

Creates an adapter which will read at most limit bytes from it.

impl Read for TcpStream

fn read(&mut self, buf: &mut [u8]) -> Result<usize>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>

Like read, except that it reads into a slice of buffers.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>

Read the exact number of bytes required to fill buf.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize>

Read all bytes until EOF in this source, appending them to buf.

fn is_read_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

🔬This is a nightly-only experimental API. (read_buf)

Read the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Selfwhere
    Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>where
    Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>where
    R: Read,
    Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>where
    Self: Sized,

Creates an adapter which will read at most limit bytes from it.

impl Write for &TcpStream

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>

Like write, except that it writes from a slice of buffers.

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this writer.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Selfwhere
    Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl Write for TcpStream

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>

Like write, except that it writes from a slice of buffers.

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this writer.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Selfwhere
    Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl SocketlikeViewType for TcpStream