| // 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 |
| } |
