48 lines
1.5 KiB
Kotlin
48 lines
1.5 KiB
Kotlin
/*
|
|
* Copyright 2021 dorkbox, llc
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package dorkbox.netUtil
|
|
|
|
import java.net.Inet4Address
|
|
import java.net.InetAddress
|
|
import java.net.UnknownHostException
|
|
|
|
object Inet4 {
|
|
/**
|
|
* Gets the version number.
|
|
*/
|
|
const val version = "2.9.1"
|
|
|
|
/**
|
|
* Returns the [Inet4Address] representation of a [String] IP or host address.
|
|
*
|
|
* @param ip [String] IP address to be converted to a [Inet4Address]
|
|
* @return [Inet4Address] representation of the `ip` or `null` if not a valid IP address.
|
|
*/
|
|
fun toAddress(ip: String): Inet4Address? {
|
|
return if (IPv4.isValid(ip)) {
|
|
IPv4.toAddressUnsafe(ip)
|
|
} else {
|
|
// maybe this is a host name and not an IP address?
|
|
try {
|
|
InetAddress.getAllByName(ip).find { it is Inet4Address } as Inet4Address
|
|
} catch (e: UnknownHostException) {
|
|
null
|
|
}
|
|
}
|
|
}
|
|
}
|