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use rand::{thread_rng, Rng};
use nix::sys::socket::{socket, sockopt, getsockopt, setsockopt, AddressFamily, SockType, SockFlag, SockProtocol};
#[cfg(any(target_os = "android", target_os = "linux"))]
use crate::*;
// NB: FreeBSD supports LOCAL_PEERCRED for SOCK_SEQPACKET, but OSX does not.
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
))]
#[test]
pub fn test_local_peercred_seqpacket() {
use nix::{
unistd::{Gid, Uid},
sys::socket::socketpair
};
let (fd1, _fd2) = socketpair(AddressFamily::Unix, SockType::SeqPacket, None,
SockFlag::empty()).unwrap();
let xucred = getsockopt(fd1, sockopt::LocalPeerCred).unwrap();
assert_eq!(xucred.version(), 0);
assert_eq!(Uid::from_raw(xucred.uid()), Uid::current());
assert_eq!(Gid::from_raw(xucred.groups()[0]), Gid::current());
}
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "ios"
))]
#[test]
pub fn test_local_peercred_stream() {
use nix::{
unistd::{Gid, Uid},
sys::socket::socketpair
};
let (fd1, _fd2) = socketpair(AddressFamily::Unix, SockType::Stream, None,
SockFlag::empty()).unwrap();
let xucred = getsockopt(fd1, sockopt::LocalPeerCred).unwrap();
assert_eq!(xucred.version(), 0);
assert_eq!(Uid::from_raw(xucred.uid()), Uid::current());
assert_eq!(Gid::from_raw(xucred.groups()[0]), Gid::current());
}
#[cfg(target_os = "linux")]
#[test]
fn is_so_mark_functional() {
use nix::sys::socket::sockopt;
require_capability!("is_so_mark_functional", CAP_NET_ADMIN);
let s = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), None).unwrap();
setsockopt(s, sockopt::Mark, &1337).unwrap();
let mark = getsockopt(s, sockopt::Mark).unwrap();
assert_eq!(mark, 1337);
}
#[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);
}
#[test]
fn test_so_tcp_maxseg() {
use std::net::SocketAddr;
use std::str::FromStr;
use nix::sys::socket::{accept, bind, connect, listen, InetAddr, SockAddr};
use nix::unistd::{close, write};
let std_sa = SocketAddr::from_str("127.0.0.1:4001").unwrap();
let inet_addr = InetAddr::from_std(&std_sa);
let sock_addr = SockAddr::new_inet(inet_addr);
let rsock = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), SockProtocol::Tcp)
.unwrap();
bind(rsock, &sock_addr).unwrap();
listen(rsock, 10).unwrap();
let initial = getsockopt(rsock, sockopt::TcpMaxSeg).unwrap();
// Initial MSS is expected to be 536 (https://tools.ietf.org/html/rfc879#section-1) but some
// platforms keep it even lower. This might fail if you've tuned your initial MSS to be larger
// than 700
cfg_if! {
if #[cfg(any(target_os = "android", target_os = "linux"))] {
let segsize: u32 = 873;
assert!(initial < segsize);
setsockopt(rsock, sockopt::TcpMaxSeg, &segsize).unwrap();
} else {
assert!(initial < 700);
}
}
// Connect and check the MSS that was advertised
let ssock = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), SockProtocol::Tcp)
.unwrap();
connect(ssock, &sock_addr).unwrap();
let rsess = accept(rsock).unwrap();
write(rsess, b"hello").unwrap();
let actual = getsockopt(ssock, sockopt::TcpMaxSeg).unwrap();
// Actual max segment size takes header lengths into account, max IPv4 options (60 bytes) + max
// TCP options (40 bytes) are subtracted from the requested maximum as a lower boundary.
cfg_if! {
if #[cfg(any(target_os = "android", target_os = "linux"))] {
assert!((segsize - 100) <= actual);
assert!(actual <= segsize);
} else {
assert!(initial < actual);
assert!(536 < actual);
}
}
close(rsock).unwrap();
close(ssock).unwrap();
}
// The CI doesn't supported getsockopt and setsockopt on emulated processors.
// It's believed 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
);
}
#[test]
#[cfg(any(target_os = "android", target_os = "linux"))]
fn test_bindtodevice() {
skip_if_not_root!("test_bindtodevice");
let fd = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), None).unwrap();
let val = getsockopt(fd, sockopt::BindToDevice).unwrap();
setsockopt(fd, sockopt::BindToDevice, &val).unwrap();
assert_eq!(
getsockopt(fd, sockopt::BindToDevice).unwrap(),
val
);
}
#[test]
fn test_so_tcp_keepalive() {
let fd = socket(AddressFamily::Inet, SockType::Stream, SockFlag::empty(), SockProtocol::Tcp).unwrap();
setsockopt(fd, sockopt::KeepAlive, &true).unwrap();
assert!(getsockopt(fd, sockopt::KeepAlive).unwrap());
#[cfg(any(target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "linux",
target_os = "nacl"))] {
let x = getsockopt(fd, sockopt::TcpKeepIdle).unwrap();
setsockopt(fd, sockopt::TcpKeepIdle, &(x + 1)).unwrap();
assert_eq!(getsockopt(fd, sockopt::TcpKeepIdle).unwrap(), x + 1);
let x = getsockopt(fd, sockopt::TcpKeepCount).unwrap();
setsockopt(fd, sockopt::TcpKeepCount, &(x + 1)).unwrap();
assert_eq!(getsockopt(fd, sockopt::TcpKeepCount).unwrap(), x + 1);
let x = getsockopt(fd, sockopt::TcpKeepInterval).unwrap();
setsockopt(fd, sockopt::TcpKeepInterval, &(x + 1)).unwrap();
assert_eq!(getsockopt(fd, sockopt::TcpKeepInterval).unwrap(), x + 1);
}
}
#[test]
#[cfg(any(target_os = "android", target_os = "freebsd", target_os = "linux"))]
fn test_ttl_opts() {
let fd4 = socket(AddressFamily::Inet, SockType::Datagram, SockFlag::empty(), None).unwrap();
setsockopt(fd4, sockopt::Ipv4Ttl, &1)
.expect("setting ipv4ttl on an inet socket should succeed");
let fd6 = socket(AddressFamily::Inet6, SockType::Datagram, SockFlag::empty(), None).unwrap();
setsockopt(fd6, sockopt::Ipv6Ttl, &1)
.expect("setting ipv6ttl on an inet6 socket should succeed");
}
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