pub struct BoxedTransport(_);
Expand description

A type for dyn Transport trait objects

BoxedTransport represents a Box<dyn Transport> that supports downcasting to the original Transport. This is used in trillium to erase the generic on Conn, in order to avoid writing Conn<TcpStream> throughout an application.

Stability Note: This may go away at some point and be replaced by a type alias exported from a trillium_server_common::Server crate.

Implementations

Create a new BoxedTransport from some Transport.

use trillium_http::transport::BoxedTransport;
use trillium_testing::TestTransport;
// this examples uses trillium_testing::TestTransport as an
// easily-constructed AsyncRead+AsyncWrite.
let (test_transport, _) = TestTransport::new();

let boxed = BoxedTransport::new(test_transport);

let downcast: Option<Box<TestTransport>> = boxed.downcast();
assert!(downcast.is_some());

let boxed_again = BoxedTransport::new(*downcast.unwrap());
assert!(boxed_again.downcast::<async_net::TcpStream>().is_none());

Attempt to convert the trait object into a specific transport T. This will only succeed if T is the type that was originally passed to BoxedTransport::new, and will return None otherwise

see BoxedTransport::new for example usage

Trait Implementations

Attempt to read from the AsyncRead into buf. Read more
Attempt to read from the AsyncRead into bufs using vectored IO operations. Read more
Attempt to write bytes from buf into the object. Read more
Attempt to flush the object, ensuring that any buffered data reach their destination. Read more
Attempt to close the object. Read more
Attempt to write bytes from bufs into the object using vectored IO operations. Read more
Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Dereferences the value.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Reads some bytes from the byte stream. Read more
Like [read()][AsyncReadExt::read()], except it reads into a slice of buffers. Read more
Reads the entire contents and appends them to a Vec. Read more
Reads the entire contents and appends them to a String. Read more
Reads the exact number of bytes required to fill buf. Read more
Creates an adapter which will read at most limit bytes from it. Read more
Converts this [AsyncRead] into a [Stream] of bytes. Read more
Creates an adapter which will chain this stream with another. Read more
Boxes the reader and changes its type to dyn AsyncRead + Send + 'a. Read more
Writes some bytes into the byte stream. Read more
Like [write()][AsyncWriteExt::write()], except that it writes a slice of buffers. Read more
Writes an entire buffer into the byte stream. Read more
Flushes the stream to ensure that all buffered contents reach their destination. Read more
Closes the writer. Read more
Boxes the writer and changes its type to dyn AsyncWrite + Send + 'a. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

in order to support downcasting from a Box<dyn Transport>, Transport requires implementing an as_box_any function. Read more
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.