Trait grammers_mtproto::transports::Encoder

pub trait Encoder {
    fn max_overhead(&self) -> usize;
    fn write_magic(&mut self, output: &mut [u8]) -> Result<usize, usize>;
    fn write_into<'a>(
        &mut self, 
        input: &[u8], 
        output: &mut [u8]
    ) -> Result<usize, usize>;
}

The trait used by the encoder part of a concrete transport.

Required methods

fn max_overhead(&self) -> usize

How much overhead does the transport incur, at a maximum.

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

Write the protocol's magic into output.

On success, return how many bytes were written.

On failure, return how many bytes long the output buffer should have been.

fn write_into<'a>(
    &mut self,
    input: &[u8],
    output: &mut [u8]
) -> Result<usize, usize>

Write the packet from input into output.

On success, return how many bytes were written.

On failure, return how many bytes long the output buffer should have been.

Panics

The input length must be a multiple of 4, or else a panic will occur.

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Implementors

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