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package etcd
import (
"errors"
"net"
"time"
)
// dial attempts to open a TCP connection to the provided address, explicitly
// enabling keep-alives with a one-second interval.
func Dial(network, addr string) (net.Conn, error) {
conn, err := net.DialTimeout(network, addr, time.Second)
if err != nil {
return nil, err
}
tcpConn, ok := conn.(*net.TCPConn)
if !ok {
return nil, errors.New("Failed type-assertion of net.Conn as *net.TCPConn")
}
// Keep TCP alive to check whether or not the remote machine is down
if err = tcpConn.SetKeepAlive(true); err != nil {
return nil, err
}
if err = tcpConn.SetKeepAlivePeriod(time.Second); err != nil {
return nil, err
}
return tcpConn, nil
}
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