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Source file src/net/tcpsockopt_dragonfly.go

Documentation: net

     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  package net
     6  
     7  import (
     8  	"runtime"
     9  	"syscall"
    10  	"time"
    11  )
    12  
    13  func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
    14  	// The kernel expects milliseconds so round to next highest
    15  	// millisecond.
    16  	d += (time.Millisecond - time.Nanosecond)
    17  	msecs := int(d / time.Millisecond)
    18  	if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, msecs); err != nil {
    19  		return wrapSyscallError("setsockopt", err)
    20  	}
    21  	err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, msecs)
    22  	runtime.KeepAlive(fd)
    23  	return wrapSyscallError("setsockopt", err)
    24  }
    25  

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