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use std::io::prelude::*;
use std::os::unix::prelude::*;
use libc::off_t;
use nix::sys::sendfile::*;
use tempfile::tempfile;
cfg_if! {
if #[cfg(any(target_os = "android", target_os = "linux"))] {
use nix::unistd::{close, pipe, read};
} else if #[cfg(any(target_os = "freebsd", target_os = "ios", target_os = "macos"))] {
use std::net::Shutdown;
use std::os::unix::net::UnixStream;
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
#[test]
fn test_sendfile_linux() {
const CONTENTS: &[u8] = b"abcdef123456";
let mut tmp = tempfile().unwrap();
tmp.write_all(CONTENTS).unwrap();
let (rd, wr) = pipe().unwrap();
let mut offset: off_t = 5;
let res = sendfile(wr, tmp.as_raw_fd(), Some(&mut offset), 2).unwrap();
assert_eq!(2, res);
let mut buf = [0u8; 1024];
assert_eq!(2, read(rd, &mut buf).unwrap());
assert_eq!(b"f1", &buf[0..2]);
assert_eq!(7, offset);
close(rd).unwrap();
close(wr).unwrap();
}
#[cfg(target_os = "linux")]
#[test]
fn test_sendfile64_linux() {
const CONTENTS: &[u8] = b"abcdef123456";
let mut tmp = tempfile().unwrap();
tmp.write_all(CONTENTS).unwrap();
let (rd, wr) = pipe().unwrap();
let mut offset: libc::off64_t = 5;
let res = sendfile64(wr, tmp.as_raw_fd(), Some(&mut offset), 2).unwrap();
assert_eq!(2, res);
let mut buf = [0u8; 1024];
assert_eq!(2, read(rd, &mut buf).unwrap());
assert_eq!(b"f1", &buf[0..2]);
assert_eq!(7, offset);
close(rd).unwrap();
close(wr).unwrap();
}
#[cfg(target_os = "freebsd")]
#[test]
fn test_sendfile_freebsd() {
// Declare the content
let header_strings = vec!["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
let body = "Xabcdef123456";
let body_offset = 1;
let trailer_strings = vec!["\n", "Served by Make Believe\n"];
// Write the body to a file
let mut tmp = tempfile().unwrap();
tmp.write_all(body.as_bytes()).unwrap();
// Prepare headers and trailers for sendfile
let headers: Vec<&[u8]> = header_strings.iter().map(|s| s.as_bytes()).collect();
let trailers: Vec<&[u8]> = trailer_strings.iter().map(|s| s.as_bytes()).collect();
// Prepare socket pair
let (mut rd, wr) = UnixStream::pair().unwrap();
// Call the test method
let (res, bytes_written) = sendfile(
tmp.as_raw_fd(),
wr.as_raw_fd(),
body_offset as off_t,
None,
Some(headers.as_slice()),
Some(trailers.as_slice()),
SfFlags::empty(),
0,
);
assert!(res.is_ok());
wr.shutdown(Shutdown::Both).unwrap();
// Prepare the expected result
let expected_string =
header_strings.concat() + &body[body_offset..] + &trailer_strings.concat();
// Verify the message that was sent
assert_eq!(bytes_written as usize, expected_string.as_bytes().len());
let mut read_string = String::new();
let bytes_read = rd.read_to_string(&mut read_string).unwrap();
assert_eq!(bytes_written as usize, bytes_read);
assert_eq!(expected_string, read_string);
}
#[cfg(any(target_os = "ios", target_os = "macos"))]
#[test]
fn test_sendfile_darwin() {
// Declare the content
let header_strings = vec!["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
let body = "Xabcdef123456";
let body_offset = 1;
let trailer_strings = vec!["\n", "Served by Make Believe\n"];
// Write the body to a file
let mut tmp = tempfile().unwrap();
tmp.write_all(body.as_bytes()).unwrap();
// Prepare headers and trailers for sendfile
let headers: Vec<&[u8]> = header_strings.iter().map(|s| s.as_bytes()).collect();
let trailers: Vec<&[u8]> = trailer_strings.iter().map(|s| s.as_bytes()).collect();
// Prepare socket pair
let (mut rd, wr) = UnixStream::pair().unwrap();
// Call the test method
let (res, bytes_written) = sendfile(
tmp.as_raw_fd(),
wr.as_raw_fd(),
body_offset as off_t,
None,
Some(headers.as_slice()),
Some(trailers.as_slice()),
);
assert!(res.is_ok());
wr.shutdown(Shutdown::Both).unwrap();
// Prepare the expected result
let expected_string =
header_strings.concat() + &body[body_offset..] + &trailer_strings.concat();
// Verify the message that was sent
assert_eq!(bytes_written as usize, expected_string.as_bytes().len());
let mut read_string = String::new();
let bytes_read = rd.read_to_string(&mut read_string).unwrap();
assert_eq!(bytes_written as usize, bytes_read);
assert_eq!(expected_string, read_string);
}
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