mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-02 18:53:22 +00:00
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
|
// 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.
|
||
|
|
|
||
|
|
// Socket options for Linux
|
||
|
|
|
||
|
|
package net
|
||
|
|
|
||
|
|
import (
|
||
|
|
"os"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
func setDefaultSockopts(s, f, t int) error {
|
||
|
|
switch f {
|
||
|
|
case syscall.AF_INET6:
|
||
|
|
// Allow both IP versions even if the OS default is otherwise.
|
||
|
|
// Note that some operating systems never admit this option.
|
||
|
|
syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, 0)
|
||
|
|
}
|
||
|
|
// Allow broadcast.
|
||
|
|
err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
|
||
|
|
if err != nil {
|
||
|
|
return os.NewSyscallError("setsockopt", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func setDefaultListenerSockopts(s int) error {
|
||
|
|
// Allow reuse of recently-used addresses.
|
||
|
|
err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
|
||
|
|
if err != nil {
|
||
|
|
return os.NewSyscallError("setsockopt", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func setDefaultMulticastSockopts(s int) error {
|
||
|
|
// Allow multicast UDP and raw IP datagram sockets to listen
|
||
|
|
// concurrently across multiple listeners.
|
||
|
|
err := syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
|
||
|
|
if err != nil {
|
||
|
|
return os.NewSyscallError("setsockopt", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|