Struct BluetoothSocket

pub struct BluetoothSocket { /* private fields */ }

Manages the Bluetooth socket and IO streams. It uses a read buffer and a background thread, because the timeout of the Java InputStream from the BluetoothSocket cannot be set. The read timeout defaults to 0 (it does not block).

Reference: https://developer.android.com/develop/connectivity/bluetooth/transfer-data

Implementations

impl BluetoothSocket

pub fn is_connected(&self) -> Result<bool, Error>

Gets the connection status of this socket.

pub fn connect(&mut self) -> Result<(), Error>

Attempts to connect to a remote device. When connected, it creates a backgrond thread for reading data, which terminates itself on disconnection. Do not reuse the socket after disconnection, because the underlying OS implementation is probably incapable of reconnecting the device, just like java.net.Socket.

pub fn len_available(&self) -> usize

Returns number of available bytes that can be read without blocking.

pub fn clear_read_buf(&mut self)

Clears the managed read buffer used by the Rust side background thread.

pub fn set_read_timeout(&mut self, timeout: Duration)

Sets timeout for the std::io::Read implementation.

pub fn set_read_callback(&mut self, f: impl Fn(Option<usize>) + 'static + Send)

Sets or replaces the callback to be invoked from the background thread when new data becomes available or the socket is disconnected. The length of newly arrived data instead of the length of available data in the read buffer will be passed to the callback (or None if it is disconnected).

pub fn close(&mut self) -> Result<(), Error>

Closes this socket and releases any system resources associated with it. If the stream is already closed then invoking this method has no effect.

Trait Implementations

impl Drop for BluetoothSocket

fn drop(&mut self)

Executes the destructor for this type.

impl Read for BluetoothSocket

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, Error>

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

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_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

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

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

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

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

Reads the exact number of bytes required to fill buf.

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)

Reads the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Self

where 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 BluetoothSocket

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

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

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

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

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

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

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

Attempts to write an entire buffer into this writer.

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

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

Attempts to write multiple buffers into this writer.

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

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

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

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