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Add ipv4AddressToInt(Inet4Address) in NetUtils (#10500)

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Motivation:

We're converting `Inet4Address` to `Integer` quite frequently so it's a good idea to keep that code in `NetUtils`.

Modification:

Added ipv4AddressToInt(Inet4Address) in NetUtils

Result:
Easy conversion of  `Inet4Address` to `Integer`.
This commit is contained in:
Aayush Atharva 2020-08-31 12:43:14 +05:30 committed by GitHub
parent 6c1840749d
commit fde6bc8885
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2 changed files with 19 additions and 0 deletions
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12
common/src/main/java/io/netty/util/NetUtil.java
View File

@ -416,6 +416,18 @@ public final class NetUtil {
};
}
/**
* Convert {@link Inet4Address} into {@code int}
*/
public static int ipv4AddressToInt(Inet4Address ipAddress) {
byte[] octets = ipAddress.getAddress();
return (octets[0] & 0xff) << 24 |
(octets[1] & 0xff) << 16 |
(octets[2] & 0xff) << 8 |
octets[3] & 0xff;
}
/**
* Converts a 32-bit integer into an IPv4 address.
*/

7
common/src/test/java/io/netty/util/NetUtilTest.java
View File

@ -18,6 +18,7 @@ package io.netty.util;
import io.netty.util.internal.StringUtil;
import org.junit.Test;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
@ -724,6 +725,12 @@ public class NetUtilTest {
}
}
@Test
public void testIPv4ToInt() throws UnknownHostException {
assertEquals(2130706433, ipv4AddressToInt((Inet4Address) InetAddress.getByName("127.0.0.1")));
assertEquals(-1062731519, ipv4AddressToInt((Inet4Address) InetAddress.getByName("192.168.1.1")));
}
@Test
public void testIpv4MappedIp6GetByName() {
for (Entry<String, String> testEntry : ipv4MappedToIPv6AddressStrings.entrySet()) {