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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin freebsd netbsd openbsd
// IP-level socket options for BSD variants
package net
import (
"os"
"syscall"
)
func ipv4MulticastTTL(fd *netFD) (int, error) {
if err := fd.incref(false); err != nil {
return 0, err
}
defer fd.decref()
v, err := syscall.GetsockoptByte(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_TTL)
if err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv4MulticastTTL(fd *netFD, v int) error {
if err := fd.incref(false); err != nil {
return err
}
defer fd.decref()
err := syscall.SetsockoptByte(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_TTL, byte(v))
if err != nil {
return os.NewSyscallError("setsockopt", err)
}
return nil
}
func ipv6TrafficClass(fd *netFD) (int, error) {
if err := fd.incref(false); err != nil {
return 0, err
}
defer fd.decref()
v, err := syscall.GetsockoptInt(fd.sysfd, syscall.IPPROTO_IPV6, syscall.IPV6_TCLASS)
if err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return v, nil
}
func setIPv6TrafficClass(fd *netFD, v int) error {
if err := fd.incref(false); err != nil {
return err
}
defer fd.decref()
err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IPV6, syscall.IPV6_TCLASS, v)
if err != nil {
return os.NewSyscallError("setsockopt", err)
}
return nil
}
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