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// Copyright 2009 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 linux netbsd openbsd
package net
import "syscall"
func listenerSockaddr(s, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
a := toAddr(la)
if a == nil {
return la, nil
}
switch a := a.(type) {
case *TCPAddr, *UnixAddr:
if err := setDefaultListenerSockopts(s); err != nil {
return nil, err
}
case *UDPAddr:
if a.IP.IsMulticast() {
if err := setDefaultMulticastSockopts(s); err != nil {
return nil, err
}
switch f {
case syscall.AF_INET:
a.IP = IPv4zero
case syscall.AF_INET6:
a.IP = IPv6unspecified
}
return a.sockaddr(f)
}
}
return la, nil
}
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