You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.4 KiB
66 lines
1.4 KiB
package privval
|
|
|
|
import (
|
|
"net"
|
|
"time"
|
|
)
|
|
|
|
// timeoutError can be used to check if an error returned from the netp package
|
|
// was due to a timeout.
|
|
type timeoutError interface {
|
|
Timeout() bool
|
|
}
|
|
|
|
// tcpTimeoutListener implements net.Listener.
|
|
var _ net.Listener = (*tcpTimeoutListener)(nil)
|
|
|
|
// tcpTimeoutListener wraps a *net.TCPListener to standardise protocol timeouts
|
|
// and potentially other tuning parameters.
|
|
type tcpTimeoutListener struct {
|
|
*net.TCPListener
|
|
|
|
acceptDeadline time.Duration
|
|
connDeadline time.Duration
|
|
period time.Duration
|
|
}
|
|
|
|
// newTCPTimeoutListener returns an instance of tcpTimeoutListener.
|
|
func newTCPTimeoutListener(
|
|
ln net.Listener,
|
|
acceptDeadline, connDeadline time.Duration,
|
|
period time.Duration,
|
|
) tcpTimeoutListener {
|
|
return tcpTimeoutListener{
|
|
TCPListener: ln.(*net.TCPListener),
|
|
acceptDeadline: acceptDeadline,
|
|
connDeadline: connDeadline,
|
|
period: period,
|
|
}
|
|
}
|
|
|
|
// Accept implements net.Listener.
|
|
func (ln tcpTimeoutListener) Accept() (net.Conn, error) {
|
|
err := ln.SetDeadline(time.Now().Add(ln.acceptDeadline))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
tc, err := ln.AcceptTCP()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := tc.SetDeadline(time.Now().Add(ln.connDeadline)); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := tc.SetKeepAlive(true); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := tc.SetKeepAlivePeriod(ln.period); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return tc, nil
|
|
}
|