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mod body;
mod config;
mod transport;
pub use body::UnixBody;
pub use config::UnixConfig;
pub use transport::{UnixReadHalf, UnixTransport, UnixWriteHalf};
#[cfg(feature = "unix-seqpacket")]
mod impl_unix_seqpacket {
use std::future::Future;
use std::pin::Pin;
use super::*;
impl crate::transport::Transport for UnixTransport<tokio_seqpacket::UnixSeqpacket> {
type Body = UnixBody;
type Config = UnixConfig;
type ReadHalf = ReadHalfType;
type WriteHalf = WriteHalfType;
fn split<'a>(&'a mut self) -> (UnixReadHalf<&'a tokio_seqpacket::UnixSeqpacket>, UnixWriteHalf<&'a tokio_seqpacket::UnixSeqpacket>) {
let (read_half, write_half) = (&self.socket, &self.socket);
let read_half = UnixReadHalf::new(read_half, self.config.max_body_len_read, self.config.max_fds_read);
let write_half = UnixWriteHalf::new(write_half, self.config.max_body_len_write, self.config.max_fds_write);
(read_half, write_half)
}
}
impl crate::util::IntoTransport for tokio_seqpacket::UnixSeqpacket {
type Body = UnixBody;
type Config = UnixConfig;
type Transport = UnixTransport<tokio_seqpacket::UnixSeqpacket>;
fn into_transport(self, config: Self::Config) -> Self::Transport {
UnixTransport::new(self, config)
}
}
impl<'a, Address> crate::util::Connect<'a, Address> for UnixTransport<tokio_seqpacket::UnixSeqpacket>
where
Address: AsRef<std::path::Path> + 'a,
{
type Future = Pin<Box<dyn Future<Output = std::io::Result<Self>> + 'a>>;
fn connect(address: Address, config: Self::Config) -> Self::Future {
Box::pin(async move {
let socket = tokio_seqpacket::UnixSeqpacket::connect(address).await?;
Ok(Self::new(socket, config))
})
}
}
impl<'a, Address> crate::util::Bind<'a, Address> for tokio_seqpacket::UnixSeqpacketListener
where
Address: AsRef<std::path::Path> + 'a,
{
type Future = Pin<Box<dyn Future<Output = std::io::Result<Self>> + 'a>>;
fn bind(address: Address) -> Self::Future {
Box::pin(async {
Self::bind(address)
})
}
}
pub struct ReadHalfType;
pub struct WriteHalfType;
impl<'a> crate::transport::ReadHalfType<'a> for ReadHalfType {
type Body = UnixBody;
type ReadHalf = UnixReadHalf<&'a tokio_seqpacket::UnixSeqpacket>;
}
impl<'a> crate::transport::WriteHalfType<'a> for WriteHalfType {
type Body = UnixBody;
type WriteHalf = UnixWriteHalf<&'a tokio_seqpacket::UnixSeqpacket>;
}
}
#[cfg(test)]
mod test {
use assert2::assert;
use assert2::let_assert;
use filedesc::FileDesc;
use std::os::unix::io::FromRawFd;
use tokio_seqpacket::UnixSeqpacket;
use crate::util::IntoTransport;
use crate::MessageHeader;
use crate::UnixBody;
#[tokio::test]
async fn test_unix_transport() {
let_assert!(Ok((socket_a, socket_b)) = UnixSeqpacket::pair());
let mut transport_a = socket_a.into_default_transport();
let mut transport_b = socket_b.into_default_transport();
use crate::transport::{Transport, TransportReadHalf, TransportWriteHalf};
let (mut read_a, mut write_a) = transport_a.split();
let (mut read_b, mut write_b) = transport_b.split();
for i in 0..10 {
let blob_0 = make_blob("blob 0", b"Message in a blob 0");
let blob_1 = make_blob("blob 1", b"Message in a blob 1");
let body = UnixBody::new(&b"Hello peer_b!"[..], vec![blob_0, blob_1]);
assert!(let Ok(()) = write_a.write_msg(&MessageHeader::request(i * 2, 10), &body).await);
let_assert!(Ok(message) = read_b.read_msg().await);
assert!(message.header == MessageHeader::request(i * 2, 10));
assert!(message.body.data == b"Hello peer_b!");
assert!(message.body.fds.len() == 2);
let_assert!(Ok(blob_0) = read_blob(&message.body.fds[0]));
let_assert!(Ok(blob_1) = read_blob(&message.body.fds[1]));
assert!(blob_0 == b"Message in a blob 0");
assert!(blob_1 == b"Message in a blob 1");
assert!(let Ok(()) = write_b.write_msg(&MessageHeader::request(i * 2 + 1, 11), &b"Hello peer_a!"[..].into()).await);
let_assert!(Ok(message) = read_a.read_msg().await);
assert!(message.header == MessageHeader::request(i * 2 + 1, 11));
assert!(message.body.data == b"Hello peer_a!");
}
}
fn make_blob(name: &str, data: &[u8]) -> filedesc::FileDesc {
use std::io::{Seek, Write};
let_assert!(Ok(fd) = memfd::MemfdOptions::new().close_on_exec(true).create(name));
let mut file = fd.into_file();
let_assert!(Ok(_) = file.write_all(data));
assert!(let Ok(_) = file.seek(std::io::SeekFrom::Start(0)));
filedesc::FileDesc::new(file)
}
fn read_blob(fd: &FileDesc) -> std::io::Result<Vec<u8>> {
use std::io::Read;
let mut output = Vec::new();
let mut file = unsafe { std::fs::File::from_raw_fd(fd.as_raw_fd()) };
let result = file.read_to_end(&mut output);
std::mem::forget(file);
result?;
Ok(output)
}
}