rsomeip-bytes

A serialization crate for the SOME/IP on-wire format.

Overview

This crate provides traits for the serialization and deserialization of data types according to the SOME/IP protocol.

It also provides implementation of said traits for all basic types supported by the protocol, as well as for some commonly used types from Rust's standard library.

Getting Started

Add rsomeip-bytes as a dependency to your project.

# Cargo.toml

[dependencies]
rsomeip-bytes = "0.1.0"

Use the [Serialize] and [Deserialize] traits to write and read data.

use rsomeip_bytes::{Serialize, Deserialize, BytesMut, LengthField};

// Write data into a buffer using the `serialize` method.
let mut buffer = BytesMut::new();
1u8.serialize(&mut buffer).unwrap();

// Use `serialize_len` method for dynamically sized types.
let dyn_data = vec![1u8, 2];
dyn_data.serialize_len(LengthField::U8, &mut buffer).unwrap();

// Read data from a buffer using the `deserialize` method.
let mut buffer = buffer.freeze();
assert_eq!(u8::deserialize(&mut buffer), Ok(1u8));

// Use `deserialize_len` for dynamically sized types.
let dyn_data = Vec::<u8>::deserialize_len(LengthField::U8, &mut buffer).unwrap();
assert_eq!(&dyn_data[..], &[1u8, 2]);

Implement the traits for your custom types.

use rsomeip_bytes::{
    Serialize, Deserialize, Buf, BufMut, SerializeError, DeserializeError,
    LengthField
};

struct Foo {
    a: u8,
    b: Vec<u8>,
}

impl Serialize for Foo {
    fn serialize(&self, buffer: &mut impl BufMut) -> Result<usize, SerializeError> {
        let mut size = 0;
        size += self.a.serialize(buffer)?;
        size += self.b.serialize_len(LengthField::U8, buffer)?;
        Ok(size)
    }

    fn size_hint(&self) -> usize {
        let mut size = 0;
        size += self.a.size_hint();
        size += 0u8.size_hint(); // Remember to include the size of the length field.
        size += self.b.size_hint();
        size
    }
}

impl Deserialize for Foo {
    type Output = Self;

    fn deserialize(buffer: &mut impl Buf) -> Result<Self, DeserializeError> {
        Ok(Foo{
            a: u8::deserialize(buffer)?,
            b: Vec::deserialize_len(LengthField::U8, buffer)?,
        })
    }
}

Motivation

The SOME/IP protocol specifies a list of supported data types and how to represent those types on wire.

This crate aims to enable Rust projects to represent their data types using this format.

License

This project is licensed under either the Apache-2.0 License or MIT License, at your option.

Contribution