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         "runtime"
   9         "syscall"
  10         "time"
  11 )
  12
  13 func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
  14         // The kernel expects milliseconds so round to next highest
  15         // millisecond.
  16         d += (time.Millisecond - time.Nanosecond)
  17         msecs := int(d / time.Millisecond)
  18         if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, msecs); err != nil {
  19                 return wrapSyscallError("setsockopt", err)
  20         }
  21         err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, msecs)
  22         runtime.KeepAlive(fd)
  23         return wrapSyscallError("setsockopt", err)
  24 }