mirror of
https://github.com/autc04/Retro68.git
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33 lines
818 B
Go
33 lines
818 B
Go
// 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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"os"
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"syscall"
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"time"
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"unsafe"
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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 := uint32(d / time.Millisecond)
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ka := syscall.TCPKeepalive{
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OnOff: 1,
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Time: msecs,
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Interval: msecs,
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}
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ret := uint32(0)
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size := uint32(unsafe.Sizeof(ka))
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err := syscall.WSAIoctl(fd.sysfd, syscall.SIO_KEEPALIVE_VALS, (*byte)(unsafe.Pointer(&ka)), size, nil, 0, &ret, nil, 0)
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return os.NewSyscallError("wsaioctl", err)
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}
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