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// 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 (
"runtime"
"syscall"
"time"
)
func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
// The kernel expects milliseconds so round to next highest
// millisecond.
d += (time.Millisecond - time.Nanosecond)
msecs := int(d / time.Millisecond)
if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, msecs); err != nil {
return wrapSyscallError("setsockopt", err)
}
err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, msecs)
runtime.KeepAlive(fd)
return wrapSyscallError("setsockopt", err)
}