RFC 3542 or RFC 2292 - Advanced Sockets Application Program Interface (API) for IPv6

[cormac mullally]

Hi Michael,

I aggree it is quite specialised, but I think it would be good for
java to support this. Yes I would love to use Linux or Solaris but I
have to support windows.

I am going to look at the internals of the openJDK now and see how it works.

Thanks for your help so far and I will let you know how I get on.

Best Regards,
Cormac




On Nov 22, 2007 1:56 PM, Michael McMahon <Michael.McMahon at sun.com> wrote:
> Hi Cormac,
>
> I don't think it's likely that Java SE will support RFC3542 in the near
> future.
> I can't say however, whether anybody is actually doing any work on
> trying to support it.
> It seems like a fairly specialised requirement, that the majority of
> IPv6 applications would
> not use.
>
> Have you looked at Linux or Solaris? I think these operating systems
> have good support
> for the advanced Ipv6 socket APIs.
>
> Hth,
> Michael.
>
>
> cormac mullally wrote:
> > Hello all,
> >
> > I'm working on a project at the moment that needs's access to the
> > "type 0 routing header" in an IPv6 packet. RFC 2292 describes a nice
> > API, which allows you access to the routing header, see
> > http://tools.ietf.org/html/rfc2292#section-8.9
> >
> > I see that JavaSE supports RFC 2553 Basic Socket Interface Extensions
> > for IPv6, and from looking around it seems that Sun has no interest in
> > implementing RFC 3542 or RFC 2292(RFC 3542 Obsoletes 2292).
> >
> > My first question is:
> > Is there any one working on implementing RFC 3542 or RFC 2292 in the
> > openJDK project?
> >
> > My second question:
> > What are my options going forward?
> >
> >
> > I am pretty new to working on such low level stuff so any advice on
> > how I should proceed is welcome.
> >
> > I've done a bit of researching and here is a bit of a summary. I'm
> > developing on windows XP, so its mostly around how I would provide
> > this functionality on a windows enviornment, but in the end my
> > application would have to work on other major platforms.
> >
> > Firstly as some of you may know "type 0 routing header" has caused a
> > bit of controversy (see http://www.natisbad.org/ especially this
> > presentation http://www.secdev.org/conf/IPv6_RH_security-csw07.pdf)
> > and it seems that there is some security concerns. Does anyone have
> > any comment on this? I see some people are not happy as applications
> > have already been developed using this feature. Do you think "type 0
> > routing header" will be disabled by default in routers and hosts? Do
> > you think a new method will be created to provide this routing
> > functionality but more securly?
> >
> > So imagining that all is well with "type 0 routing header" and I will
> > use it for my project, here are some of the solutions I have been
> > looking at for implementing this on windows.
> > 1. WinSock
> > 2. Raw Socket on top Winsock
> > 3. Winpcap 4.0 beta 3 supports IPv6
> >
> >
> > 1. Winsock
> > Winsock does not seem to support RFC 3542 or RFC 2292. As in there is
> > no nice methods for adding routing headers as far as I can see.
> > http://msdn2.microsoft.com/en-us/library/ms738649.aspx and
> > http://msdn2.microsoft.com/en-us/library/ms738649.aspx
> >
> > 2. Raw Socket with Winsock
> > Raw Socket as far as I can see gives you acess to the header and data
> > parts of the packet. From my research this in theory seems to be
> > possible with winsock
> > see http://msdn2.microsoft.com/en-us/library/ms740506.aspx especially
> > the IPV6_HDRINCL section.
> > Windows XP SP2 seems to have limited the raw socket, see
> > http://blogs.msdn.com/michael_howard/archive/2004/08/12/213611.aspx,
> > but I think I should be sill OK as I'm working with UDP and I'm not
> > trying to change the source address of anything.
> > Does anyone have any advice on starting with raw socket programming? I
> > have downloaded and am looking at Rock Saw at the
> > moment(http://www.savarese.org/software/rocksaw/). Any other advice
> > welcome.
> > Does JavaSE or OpenJDK use raw sockets for its functionality, or does
> > it do something else? I am going to start looking into this next.
> >
> > 3. Winpcap 4.0 beta 3
> > Haven't investigated much here. Does this run on top of winsock? Does
> > anyone know can I send packets using winpcap? Network Packet generator
> > (http://www.wikistc.org/wiki/Network_packet_generator) is built on
> > winpcap, has anyone used this on windows?
> >
> > Thats my research for the moment. If you have any questions please get
> > back to me.
> >
> > Thanks for reading,
> > Cormac
> >
>
>