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  //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  }
    25
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