// Copyright 2009 The Go Authors. All rights reserved.
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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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"runtime"
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"syscall"
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"time"
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)
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const sysTCP_KEEPINTVL = 0x101
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func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
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// The kernel expects seconds so round to next highest second.
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d += (time.Second - time.Nanosecond)
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secs := int(d.Seconds())
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if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, sysTCP_KEEPINTVL, secs); err != nil {
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return wrapSyscallError("setsockopt", err)
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}
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err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs)
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runtime.KeepAlive(fd)
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return wrapSyscallError("setsockopt", err)
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}
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