github.com/m10x/go/src@v0.0.0-20220112094212-ba61592315da/net/tcpsockopt_unix.go (about) 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 //go:build aix || 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 secs := int(roundDurationUp(d, time.Second)) 18 if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, secs); err != nil { 19 return wrapSyscallError("setsockopt", err) 20 } 21 err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, secs) 22 runtime.KeepAlive(fd) 23 return wrapSyscallError("setsockopt", err) 24 }