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Subject: Re: HTTP NIO connector not supporting IPv6
From: Daniel Mikusa <dmikusa@vmware.com>
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Date: Wed, 12 Sep 2012 15:14:02 -0400
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To: "Tomcat Users List" <users@tomcat.apache.org>

On Sep 12, 2012, at 2:44 PM, Jeffrey Janner wrote:

>> -----Original Message-----
>> From: Daniel Mikusa [mailto:dmikusa@vmware.com]
>> Sent: Wednesday, September 12, 2012 10:00 AM
>> To: Tomcat Users List
>> Subject: Re: HTTP NIO connector not supporting IPv6
>>=20
>> On Sep 12, 2012, at 1:29 AM, Aditi Sinha wrote:
>>=20
>>> Thanks Dan, Jeff.
>>>=20
>>>=20
>>>=20
>>> There are no errors in catalina.log file.
>>>=20
>>> The connector tags are defined as below in server.xml. This
>>> configuration does not support IPv6.
>>>=20
>>>=20
>>> <Connector port=3D"8080" protocol=3D"*HTTP/1.1*"
>> connectionTimeout=3D"20000"
>>> redirectPort=3D"8443" />
>>>=20
>>>=20
>>>=20
>>> <Connector port=3D"8443" protocol=3D"*
>>> org.apache.coyote.http11.Http11NioProtocol*" SSLEnabled=3D"true"
>>> maxThreads=3D"150"
>>>=20
>>>     scheme=3D"https" secure=3D"true" clientAuth=3D"false"
>> sslProtocol=3D"TLS"
>>> keystoreFile=3D"xxxxxx" keystorePass=3D"xxxxxx"/>
>>>=20
>>=20
>> Tried it on my MBP (10.7 w/Java 1.6.0_35) and it worked fine.  Tried =
on
>> Windows XP (only version I have available) w/ Java 1.6.0_35 and was
>> able to replicate the problem behavior.  According to the following =
bug
>> report this is a limitation of the OS / JVM.  Looks like a recent
>> versions of Windows and a recent version of the JVM are required to
>> resolve this.
>>=20
>> Try upgrading from 1.6.0_25 to 1.6.0_35.
>>=20
>> http://bugs.sun.com/view_bug.do?bug_id=3D6230761
>>=20
>> Dan
>>=20
> One workaround is to explicitly define the IPv4 and IPv6 addressing in =
the <connector>.
> That is, add address=3D"0.0.0.0" for any IPv4 connectors and =
address=3D"[::]" for any IPv6 connectors. (Or use your real addresses =
instead of the "any" addresses listed here.)
> This means setting up 2 sets of connectors for each port/protocol, but =
there's nothing wrong with being explicit.
> This is what I had to do to get the APR protocol to set up for IPv4.


With all due respect, I do not think that this is going to work for the =
poster.  You're saying that your workaround was for an issue with the =
APR connector, but the poster is using the NIO connector.  The APR =
connector does not use NIO or the JVM, so I don't think your workaround =
is relevant.  In fact I tried your workaround previously without =
success.  The problem is that on older versions of Windows (pre-vista) =
and older versions of the JVM, the NIO libraries do not support IPv6 =
(see bug report).

As a side note, the poster could switch from NIO to the APR connector, =
and it would likely resolve his problem (just like he reported switching =
to the BIO connector resolved his problem).  Just assuming that the =
poster wants to stick with the NIO connector.

Dan


>=20
> Plus, why do you have asterisks (*) bracketing the protocols?  All =
examples I've ever seen don't use them.  They are just quoted strings. =
=46rom the default server.xml shipped with Tomcat:
>    <Connector port=3D"8443" protocol=3D"HTTP/1.1" SSLEnabled=3D"true"
>               maxThreads=3D"150" scheme=3D"https" secure=3D"true"
>               clientAuth=3D"false" sslProtocol=3D"TLS" />
>=20
>=20
>=20
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>=20


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