Auto merge of #43062 - sfackler:connect-timeout, r=alexcrichton

Implement TcpStream::connect_timeout

This breaks the "single syscall rule", but it's really annoying to hand
write and is pretty foundational.

r? @alexcrichton

cc @rust-lang/libs

1 files changed, 8 insertions, 0 deletions

diff --git a/src/libstd/sys_common/net.rs b/src/libstd/sys_common/net.rs
index 809b728379d..5775dd4f1fc 100644
--- a/src/libstd/sys_common/net.rs
+++ b/src/libstd/sys_common/net.rs
@@ -215,6 +215,14 @@ impl TcpStream {
         Ok(TcpStream { inner: sock })
     }
 
+    pub fn connect_timeout(addr: &SocketAddr, timeout: Duration) -> io::Result<TcpStream> {
+        init();
+
+        let sock = Socket::new(addr, c::SOCK_STREAM)?;
+        sock.connect_timeout(addr, timeout)?;
+        Ok(TcpStream { inner: sock })
+    }
+
     pub fn socket(&self) -> &Socket { &self.inner }
 
     pub fn into_socket(self) -> Socket { self.inner }