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Replace cfg macro with attribute.

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This commit is contained in:
Markus Reiter 2020-05-02 07:05:22 +02:00
parent 7184d137f6
commit 39a97900be
2 changed files with 9 additions and 7 deletions
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1
src/libstd/sys/windows/c.rs
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@ -216,7 +216,6 @@ pub const SOCK_STREAM: c_int = 1;
pub const SOL_SOCKET: c_int = 0xffff;
pub const SO_RCVTIMEO: c_int = 0x1006;
pub const SO_SNDTIMEO: c_int = 0x1005;
pub const SO_REUSEADDR: c_int = 0x0004;
pub const IPPROTO_IP: c_int = 0;
pub const IPPROTO_TCP: c_int = 6;
pub const IPPROTO_IPV6: c_int = 41;

13
src/libstd/sys_common/net.rs
View File

@ -368,12 +368,15 @@ impl TcpListener {
let sock = Socket::new(addr, c::SOCK_STREAM)?;
// On platforms with Berkeley-derived sockets, this allows
// to quickly rebind a socket, without needing to wait for
// the OS to clean up the previous one.
if !cfg!(windows) {
// On platforms with Berkeley-derived sockets, this allows to quickly
// rebind a socket, without needing to wait for the OS to clean up the
// previous one.
//
// On Windows, this allows rebinding sockets which are actively in use,
// which allows “socket hijacking”, so we explicitly don't set it here.
// https://docs.microsoft.com/en-us/windows/win32/winsock/using-so-reuseaddr-and-so-exclusiveaddruse
#[cfg(not(windows))]
setsockopt(&sock, c::SOL_SOCKET, c::SO_REUSEADDR, 1 as c_int)?;
}
// Bind our new socket
let (addrp, len) = addr.into_inner();