github.com/x04/go/src@v0.0.0-20200202162449-3d481ceb3525/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  // +build aix freebsd linux netbsd
     6  
     7  package net
     8  
     9  import (
    10  	"github.com/x04/go/src/runtime"
    11  	"github.com/x04/go/src/syscall"
    12  	"github.com/x04/go/src/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  }