InitialLdapContext IPV6 - NumberFormatException

Question

Hi,
     I have a sample program listed below for reference which makes
use of an IPV6 address when setting up the environment for creating
a ldapContext object through the use of initialLdapContext() call.
When I compile and run this program I get "java.lang.NumberFormatException".
Below is the code listing and sample run of the program. Also, the same
program works fine without throwing any exceptions when I replace the IPV6
address of the system with its corresponding IPV4 address.
Could anyone please let me know as to why I get "NumberFormatException".
PS: The sample program was built, compiled and run using JDK 1.5 and JRE 1.5
and run on Windows-XP SP2 where IPV6 is configured and ping6 works for
the same address (of a remote node).
Code listing of the sample program:
import java.util.*;
import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.ldap.*;
import java.net.InetAddress;
public class testipv6
public static void main(String args[]) throws Exception
int ldapVersion = 3;
LdapContext ldapContext;
Hashtable environment;
int serverPort;
int portNumber;
InetAddress ipAddress = null;
Control[] connCtls = null;
String serverName;
portNumber = 907;
ipAddress = ipAddress.getByName("fe80::200:f8ff:fe25:6eb4");
serverName = ipAddress.getHostName() + ":" + portNumber;
// Initialize the environment for an LDAP directory
environment = new Hashtable(11);
environment.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
environment.put(Context.PROVIDER_URL,"ldap://" + serverName);
environment.put("java.naming.ldap.version",Integer.toString(ldapVersion));
ldapContext = null;
environment.remove(Context.SECURITY_PRINCIPAL);
environment.remove(Context.SECURITY_CREDENTIALS);
ldapContext = new InitialLdapContext(environment,connCtls);
Compilation of the program:
D:\>javac testipv6.java
Note: testipv6.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Sample Run of the program:
D:\>java testipv6
Exception in thread "main" java.lang.NumberFormatException: For input string: "0
:0:0:200:f8ff:fe25:6eb4:907"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at com.sun.jndi.toolkit.url.Uri.parse(Unknown Source)
at com.sun.jndi.toolkit.url.Uri.init(Unknown Source)
at com.sun.jndi.ldap.LdapURL.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.ldap.InitialLdapContext.<init>(Unknown Source)
at testipv6.main(testipv6.java:46)
D:\>

Answer 1

Hi,
I assume, that the IPv6 URL you're passing looks likeldap://fe80:0:0:0:200:f8ff:fe25:6eb4:907In this case, parsing the URL is difficult: what is part of the IP address? What is the port number? For that reason, the URL format is modified for IPv6 and adds brackets around the address:ldap://[fe80:0:0:0:200:f8ff:fe25:6eb4]:907See RFC2732, e.g. http://rfc2732.x42.com/I have not tested it, but I assume that this is the problem.