gcc/libgo/go/net/tcpsockopt_windows.go
Ian Lance Taylor 6736ef96ea libgo: Merge to master revision 19184.
The next revision, 19185, renames several runtime files, and
will be handled in a separate change.

From-SVN: r211328
2014-06-06 22:37:27 +00:00

35 lines
850 B
Go

// 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.
// TCP socket options for windows
package net
import (
"os"
"syscall"
"time"
"unsafe"
)
func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
if err := fd.incref(); err != nil {
return err
}
defer fd.decref()
// Windows expects milliseconds so round to next highest millisecond.
d += (time.Millisecond - time.Nanosecond)
millis := uint32(d / time.Millisecond)
ka := syscall.TCPKeepalive{
OnOff: 1,
Time: millis,
Interval: millis,
}
ret := uint32(0)
size := uint32(unsafe.Sizeof(ka))
err := syscall.WSAIoctl(fd.sysfd, syscall.SIO_KEEPALIVE_VALS, (*byte)(unsafe.Pointer(&ka)), size, nil, 0, &ret, nil, 0)
return os.NewSyscallError("WSAIoctl", err)
}