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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 (
- "os"
- "runtime"
- "syscall"
- "time"
- "unsafe"
- )
- func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
- // The kernel expects milliseconds so round to next highest
- // millisecond.
- msecs := uint32(roundDurationUp(d, time.Millisecond))
- ka := syscall.TCPKeepalive{
- OnOff: 1,
- Time: msecs,
- Interval: msecs,
- }
- ret := uint32(0)
- size := uint32(unsafe.Sizeof(ka))
- err := fd.pfd.WSAIoctl(syscall.SIO_KEEPALIVE_VALS, (*byte)(unsafe.Pointer(&ka)), size, nil, 0, &ret, nil, 0)
- runtime.KeepAlive(fd)
- return os.NewSyscallError("wsaioctl", err)
- }
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