59 lines
1.1 KiB
Go
59 lines
1.1 KiB
Go
// Copyright 2013 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.
|
|
|
|
package ipv6
|
|
|
|
import (
|
|
"errors"
|
|
"net"
|
|
"runtime"
|
|
)
|
|
|
|
var (
|
|
errInvalidConn = errors.New("invalid connection")
|
|
errMissingAddress = errors.New("missing address")
|
|
errHeaderTooShort = errors.New("header too short")
|
|
errInvalidConnType = errors.New("invalid conn type")
|
|
errNoSuchInterface = errors.New("no such interface")
|
|
errNotImplemented = errors.New("not implemented on " + runtime.GOOS + "/" + runtime.GOARCH)
|
|
)
|
|
|
|
func boolint(b bool) int {
|
|
if b {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func netAddrToIP16(a net.Addr) net.IP {
|
|
switch v := a.(type) {
|
|
case *net.UDPAddr:
|
|
if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
|
|
return ip
|
|
}
|
|
case *net.IPAddr:
|
|
if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
|
|
return ip
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func opAddr(a net.Addr) net.Addr {
|
|
switch a.(type) {
|
|
case *net.TCPAddr:
|
|
if a == nil {
|
|
return nil
|
|
}
|
|
case *net.UDPAddr:
|
|
if a == nil {
|
|
return nil
|
|
}
|
|
case *net.IPAddr:
|
|
if a == nil {
|
|
return nil
|
|
}
|
|
}
|
|
return a
|
|
}
|