libgo/go/net/tcpsockopt_dragonfly.go

   1 // Copyright 2009 The Go Authors.  All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package net
   6
   7 import (
   8         "os"
   9         "syscall"
  10         "time"
  11 )
  12
  13 func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
  14         if err := fd.incref(); err != nil {
  15                 return err
  16         }
  17         defer fd.decref()
  18         // The kernel expects milliseconds so round to next highest
  19         // millisecond.
  20         d += (time.Millisecond - time.Nanosecond)
  21         msecs := int(d / time.Millisecond)
  22         if err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, msecs); err != nil {
  23                 return os.NewSyscallError("setsockopt", err)
  24         }
  25         return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, msecs))
  26 }