44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
Rust
use byteorder::{ReadBytesExt, WriteBytesExt, LE};
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use std::io::{self, Read, Write};
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pub struct ServiceMessage {
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pub src_service_id: u32,
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pub rpc_id: u16,
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pub message_id: u16,
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pub data: Box<[u8]>,
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}
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impl ServiceMessage {
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pub fn encode(&self, buf: &mut [u8]) -> io::Result<()> {
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let mut w = io::Cursor::new(buf);
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w.write_u32::<LE>(self.src_service_id)?;
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w.write_u16::<LE>(self.rpc_id)?;
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w.write_u16::<LE>(self.message_id)?;
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w.write_u32::<LE>(self.data.len() as u32)?;
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w.write(&self.data)?;
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Ok(())
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}
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pub fn decode(buf: &[u8]) -> io::Result<Self> {
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let mut r = io::Cursor::new(buf);
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let src_service_id = r.read_u32::<LE>()?;
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let rpc_id = r.read_u16::<LE>()?;
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let message_id = r.read_u16::<LE>()?;
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let data_len = r.read_u32::<LE>()? as usize;
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let mut data = vec![0u8; data_len];
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r.read_exact(&mut data)?;
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Ok(Self {
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src_service_id,
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rpc_id,
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message_id,
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data: data.into_boxed_slice(),
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})
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}
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pub fn get_encoding_length(&self) -> usize {
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12 + self.data.len()
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}
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}
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