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 "runtime" 11 "syscall" 12 "time" 13 ) 14 15 func setKeepAlivePeriod(fd *netFD, d time.Duration) error { 16 // The kernel expects seconds so round to next highest second. 17 d += (time.Second - time.Nanosecond) 18 secs := int(d.Seconds()) 19 if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, secs); err != nil { 20 return wrapSyscallError("setsockopt", err) 21 } 22 err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, secs) 23 runtime.KeepAlive(fd) 24 return wrapSyscallError("setsockopt", err) 25 } 26
