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use rand::{thread_rng, Rng};
use nix::sys::socket::{socket, sockopt, getsockopt, setsockopt, AddressFamily, SockType, SockFlag, SockProtocol};
#[test]
fn test_so_buf() {
let fd = socket(AddressFamily::Inet, SockType::Datagram, SockFlag::empty(), SockProtocol::Udp)
.unwrap();
let bufsize: usize = thread_rng().gen_range(4096, 131_072);
setsockopt(fd, sockopt::SndBuf, &bufsize).unwrap();
let actual = getsockopt(fd, sockopt::SndBuf).unwrap();
assert!(actual >= bufsize);
setsockopt(fd, sockopt::RcvBuf, &bufsize).unwrap();
let actual = getsockopt(fd, sockopt::RcvBuf).unwrap();
assert!(actual >= bufsize);
}
// The CI doesn't supported getsockopt and setsockopt on emulated processors.
// It's beleived that a QEMU issue, the tests run ok on a fully emulated system.
// Current CI just run the binary with QEMU but the Kernel remains the same as the host.
// So the syscall doesn't work properly unless the kernel is also emulated.
#[test]
#[cfg(all(
any(target_arch = "x86", target_arch = "x86_64"),
any(target_os = "freebsd", target_os = "linux")
))]
fn test_tcp_congestion() {
use std::ffi::OsString;
let fd = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), None).unwrap();
let val = getsockopt(fd, sockopt::TcpCongestion).unwrap();
setsockopt(fd, sockopt::TcpCongestion, &val).unwrap();
setsockopt(fd, sockopt::TcpCongestion, &OsString::from("tcp_congestion_does_not_exist")).unwrap_err();
assert_eq!(
getsockopt(fd, sockopt::TcpCongestion).unwrap(),
val
);
}
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