2017-10-07 00:16:47 +00:00
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// Copyright 2009 The Go Authors. All rights reserved.
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2015-08-28 15:33:40 +00:00
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"os"
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"syscall"
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"time"
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)
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func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
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if err := fd.incref(); err != nil {
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return err
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}
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defer fd.decref()
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// The kernel expects milliseconds so round to next highest
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// millisecond.
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d += (time.Millisecond - time.Nanosecond)
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msecs := int(d / time.Millisecond)
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if err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, msecs); err != nil {
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return os.NewSyscallError("setsockopt", err)
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}
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return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, msecs))
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}
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