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 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 } 28
