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/*
* Copyright (c) Peter Bjorklund. All rights reserved. https://github.com/nimble-rust/nimble
* Licensed under the MIT License. See LICENSE in the project root for license information.
*/
use flood_rs::{ReadOctetStream, WriteOctetStream};
use std::io;
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct SetChunkData {
pub chunk_index: u32,
pub payload: Vec<u8>,
}
impl SetChunkData {
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
#[allow(clippy::cast_possible_truncation)]
pub fn to_stream(&self, stream: &mut impl WriteOctetStream) -> io::Result<()> {
stream.write_u32(self.chunk_index)?;
stream.write_u16(self.payload.len() as u16)?;
stream.write(&self.payload[..])?;
Ok(())
}
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn from_stream(stream: &mut impl ReadOctetStream) -> io::Result<Self> {
let chunk_index = stream.read_u32()?;
let octet_length = stream.read_u16()?;
let mut payload = vec![0u8; octet_length as usize];
stream.read(&mut payload)?;
Ok(Self {
chunk_index,
payload,
})
}
}
#[derive(Debug, Clone, Copy, Eq, PartialEq)]
pub struct TransferId(pub u16);
impl TransferId {
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn to_stream(&self, stream: &mut impl WriteOctetStream) -> io::Result<()> {
stream.write_u16(self.0)
}
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn from_stream(stream: &mut impl ReadOctetStream) -> io::Result<Self> {
Ok(Self(stream.read_u16()?))
}
}
// ---------- Receiver
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub struct AckChunkData {
pub waiting_for_chunk_index: u32, // first chunk index that remote has not received fully in sequence. (first gap in chunks from the start).
pub receive_mask_after_last: u64, // receive bit mask for chunks after the `waiting_for_chunk_index`
}
impl AckChunkData {
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn to_stream(&self, stream: &mut impl WriteOctetStream) -> io::Result<()> {
stream.write_u32(self.waiting_for_chunk_index)?;
stream.write_u64(self.receive_mask_after_last)?;
Ok(())
}
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn from_stream(stream: &mut impl ReadOctetStream) -> io::Result<Self> {
Ok(Self {
waiting_for_chunk_index: stream.read_u32()?,
receive_mask_after_last: stream.read_u64()?,
})
}
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct StartTransferData {
pub transfer_id: u16, // Unique transfer_id for this session
pub total_octet_size: u32,
pub chunk_size: u16,
}
impl StartTransferData {
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
#[allow(clippy::cast_possible_truncation)]
pub fn to_stream(&self, stream: &mut impl WriteOctetStream) -> io::Result<()> {
stream.write_u16(self.transfer_id)?;
stream.write_u32(self.total_octet_size)?;
stream.write_u16(self.chunk_size)
}
/// # Errors
///
/// This function will return an `io::Error` if there is an issue with writing to the stream.
/// This could happen if the stream is closed or if there are underlying I/O errors during the write operation.
pub fn from_stream(stream: &mut impl ReadOctetStream) -> io::Result<Self> {
let transfer_id = stream.read_u16()?;
let total_octet_size = stream.read_u32()?;
let chunk_size = stream.read_u16()?;
Ok(Self {
transfer_id,
total_octet_size,
chunk_size,
})
}
}