Trait tokio_io::codec::Encoder
[−]
[src]
pub trait Encoder { type Item; type Error: From<Error>; fn encode(
&mut self,
item: Self::Item,
dst: &mut BytesMut
) -> Result<(), Self::Error>; }
Trait of helper objects to write out messages as bytes, for use with
FramedWrite
.
Associated Types
type Item
The type of items consumed by the Encoder
type Error: From<Error>
The type of encoding errors.
FramedWrite
requires Encoder
s errors to implement From<io::Error>
in the interest letting it return Error
s directly.
Required Methods
fn encode(
&mut self,
item: Self::Item,
dst: &mut BytesMut
) -> Result<(), Self::Error>
&mut self,
item: Self::Item,
dst: &mut BytesMut
) -> Result<(), Self::Error>
Encodes a frame into the buffer provided.
This method will encode item
into the byte buffer provided by dst
.
The dst
provided is an internal buffer of the Framed
instance and
will be written out when possible.
Implementors
impl Encoder for BytesCodec type Item = Bytes; type Error = Error;
impl Encoder for LinesCodec type Item = String; type Error = Error;