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How to normalise IPv6 address in Java?
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Given a string which contains an IPv6 address in one of it's formats, is there a Java standart way to normalise it in a way that the same normalised value for different formats of the same address?
i.e
normalise("2001:db8:0:0:1:0:0:1") = x
normalise("2001:db8::1:0:0:1") = x
normalise("2001:db8:0:0:1::1") = x
java ip ipv6
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
add a comment |
Given a string which contains an IPv6 address in one of it's formats, is there a Java standart way to normalise it in a way that the same normalised value for different formats of the same address?
i.e
normalise("2001:db8:0:0:1:0:0:1") = x
normalise("2001:db8::1:0:0:1") = x
normalise("2001:db8:0:0:1::1") = x
java ip ipv6
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
add a comment |
Given a string which contains an IPv6 address in one of it's formats, is there a Java standart way to normalise it in a way that the same normalised value for different formats of the same address?
i.e
normalise("2001:db8:0:0:1:0:0:1") = x
normalise("2001:db8::1:0:0:1") = x
normalise("2001:db8:0:0:1::1") = x
java ip ipv6
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
Given a string which contains an IPv6 address in one of it's formats, is there a Java standart way to normalise it in a way that the same normalised value for different formats of the same address?
i.e
normalise("2001:db8:0:0:1:0:0:1") = x
normalise("2001:db8::1:0:0:1") = x
normalise("2001:db8:0:0:1::1") = x
java ip ipv6
java ip ipv6
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
edited Sep 7 '18 at 19:57
Thomas Fritsch
5,755122237
5,755122237
asked Sep 2 '18 at 8:10
ABRABR
4551720
asked Sep 2 '18 at 8:10
ABRABR
4551720
asked Sep 2 '18 at 8:10
ABRABR
4551720
4551720
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
You can achieve this easily
by parsing the string with InetAddress.getByName(String)
and then converting back to string with getHostAddress():
public static String normalize(String s) throws UnknownHostException
return InetAddress.getByName(s).getHostAddress();
This method returns "2001:db8:0:0:1:0:0:1" for all your 3 examples.
By the way: The code above can normalize IPv6 and IPv4 addresses.
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
add a comment |
The open-source IPAddress Java library provides various methods for different string formats. Several can be used to produce a normalized string. Disclaimer: I am the project manager of the IPAddress library.
Two that are well-suited to be considered "standardized" strings are the canonical string and the normalized string.
The canonical string is the recommended way of writing IPv6 addresses as defined by RFC 5952
The normalized string is the format produced by the class java.net.InetAddress.
static void printNormalized(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toNormalizedString());
static void printCanonical(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toCanonicalString());
String strs[] =
"2001:db8:0:0:1:0:0:1",
"2001:db8::1:0:0:1",
"2001:db8:0:0:1::1";
printCanonical(strs);
System.out.println();
printNormalized(strs);
Output:
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
answered Mar 24 at 22:05
Sean FSean F
2,136614
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can achieve this easily
by parsing the string with InetAddress.getByName(String)
and then converting back to string with getHostAddress():
public static String normalize(String s) throws UnknownHostException
return InetAddress.getByName(s).getHostAddress();
This method returns "2001:db8:0:0:1:0:0:1" for all your 3 examples.
By the way: The code above can normalize IPv6 and IPv4 addresses.
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
add a comment |
You can achieve this easily
by parsing the string with InetAddress.getByName(String)
and then converting back to string with getHostAddress():
public static String normalize(String s) throws UnknownHostException
return InetAddress.getByName(s).getHostAddress();
This method returns "2001:db8:0:0:1:0:0:1" for all your 3 examples.
By the way: The code above can normalize IPv6 and IPv4 addresses.
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
add a comment |
You can achieve this easily
by parsing the string with InetAddress.getByName(String)
and then converting back to string with getHostAddress():
public static String normalize(String s) throws UnknownHostException
return InetAddress.getByName(s).getHostAddress();
This method returns "2001:db8:0:0:1:0:0:1" for all your 3 examples.
By the way: The code above can normalize IPv6 and IPv4 addresses.
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
You can achieve this easily
by parsing the string with InetAddress.getByName(String)
and then converting back to string with getHostAddress():
public static String normalize(String s) throws UnknownHostException
return InetAddress.getByName(s).getHostAddress();
This method returns "2001:db8:0:0:1:0:0:1" for all your 3 examples.
By the way: The code above can normalize IPv6 and IPv4 addresses.
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
edited Sep 2 '18 at 18:27
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
answered Sep 2 '18 at 8:28
Thomas FritschThomas Fritsch
5,755122237
5,755122237
add a comment |
add a comment |
The open-source IPAddress Java library provides various methods for different string formats. Several can be used to produce a normalized string. Disclaimer: I am the project manager of the IPAddress library.
Two that are well-suited to be considered "standardized" strings are the canonical string and the normalized string.
The canonical string is the recommended way of writing IPv6 addresses as defined by RFC 5952
The normalized string is the format produced by the class java.net.InetAddress.
static void printNormalized(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toNormalizedString());
static void printCanonical(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toCanonicalString());
String strs[] =
"2001:db8:0:0:1:0:0:1",
"2001:db8::1:0:0:1",
"2001:db8:0:0:1::1";
printCanonical(strs);
System.out.println();
printNormalized(strs);
Output:
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
answered Mar 24 at 22:05
Sean FSean F
2,136614
add a comment |
The open-source IPAddress Java library provides various methods for different string formats. Several can be used to produce a normalized string. Disclaimer: I am the project manager of the IPAddress library.
Two that are well-suited to be considered "standardized" strings are the canonical string and the normalized string.
The canonical string is the recommended way of writing IPv6 addresses as defined by RFC 5952
The normalized string is the format produced by the class java.net.InetAddress.
static void printNormalized(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toNormalizedString());
static void printCanonical(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toCanonicalString());
String strs[] =
"2001:db8:0:0:1:0:0:1",
"2001:db8::1:0:0:1",
"2001:db8:0:0:1::1";
printCanonical(strs);
System.out.println();
printNormalized(strs);
Output:
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
answered Mar 24 at 22:05
Sean FSean F
2,136614
add a comment |
The open-source IPAddress Java library provides various methods for different string formats. Several can be used to produce a normalized string. Disclaimer: I am the project manager of the IPAddress library.
Two that are well-suited to be considered "standardized" strings are the canonical string and the normalized string.
The canonical string is the recommended way of writing IPv6 addresses as defined by RFC 5952
The normalized string is the format produced by the class java.net.InetAddress.
static void printNormalized(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toNormalizedString());
static void printCanonical(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toCanonicalString());
String strs[] =
"2001:db8:0:0:1:0:0:1",
"2001:db8::1:0:0:1",
"2001:db8:0:0:1::1";
printCanonical(strs);
System.out.println();
printNormalized(strs);
Output:
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
answered Mar 24 at 22:05
Sean FSean F
2,136614
The open-source IPAddress Java library provides various methods for different string formats. Several can be used to produce a normalized string. Disclaimer: I am the project manager of the IPAddress library.
Two that are well-suited to be considered "standardized" strings are the canonical string and the normalized string.
The canonical string is the recommended way of writing IPv6 addresses as defined by RFC 5952
The normalized string is the format produced by the class java.net.InetAddress.
static void printNormalized(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toNormalizedString());
static void printCanonical(String strs[])
for (String str : strs)
System.out.println(new IPAddressString(str).getAddress().toCanonicalString());
String strs[] =
"2001:db8:0:0:1:0:0:1",
"2001:db8::1:0:0:1",
"2001:db8:0:0:1::1";
printCanonical(strs);
System.out.println();
printNormalized(strs);
Output:
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8::1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
2001:db8:0:0:1:0:0:1
answered Mar 24 at 22:05
Sean FSean F
2,136614
edited Mar 25 at 4:47
answered Mar 24 at 22:05
Sean FSean F
2,136614
answered Mar 24 at 22:05
Sean FSean F
2,136614
answered Mar 24 at 22:05
Sean FSean F
2,136614
2,136614
add a comment |
add a comment |
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