blob: 1f1609088baf196d39e2066afcabc48d11fd66a7 [file] [log] [blame]
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package net
import (
const sysTCP_KEEPINTVL = 0x101
func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
if err := fd.incref(); err != nil {
return err
defer fd.decref()
// The kernel expects seconds so round to next highest second.
d += (time.Second - time.Nanosecond)
secs := int(d.Seconds())
switch err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, sysTCP_KEEPINTVL, secs); err {
case nil, syscall.ENOPROTOOPT: // OS X 10.7 and earlier don't support this option
return os.NewSyscallError("setsockopt", err)
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs))