| // 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) | |
| } |