libgo/go/net/tcpsockopt_unix.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 // +build freebsd linux netbsd solaris
   6
   7 package net
   8
   9 import (
  10         "os"
  11         "syscall"
  12         "time"
  13 )
  14
  15 func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
  16         if err := fd.incref(); err != nil {
  17                 return err
  18         }
  19         defer fd.decref()
  20         // The kernel expects seconds so round to next highest second.
  21         d += (time.Second - time.Nanosecond)
  22         secs := int(d.Seconds())
  23         if err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, secs); err != nil {
  24                 return os.NewSyscallError("setsockopt", err)
  25         }
  26         return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, secs))
  27 }