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Posted to dev@mina.apache.org by satish viswanatham <sa...@gmail.com> on 2007/08/04 03:18:24 UTC
Is there a way to set DF bit in the IP packet?
Hi
I quickly looked through the MINA APIs (mainly 1.x). I could not find a way
to set DF (do not fragment) bit.
DatagramSessionConfig does not seem to have a method for this? Is that
possible in MINA?
Basically I need a Java UDP server can tell the client the maximum MTU in
both directions.
thanks
Satish
Re: Is there a way to set DF bit in the IP packet?
Posted by satish viswanatham <sa...@gmail.com>.
I found another library in Java -
http://jswrench.sourceforge.net/
thanks
Satish
On 8/5/07, satish viswanatham <sa...@gmail.com> wrote:
>
>
> I did not see a way to set this in Java SE APIs, but I found a library in
> Java which lets you set DF bit: http://netresearch.ics.uci.edu/kfujii/jpcap/doc/javadoc/index.html
>
>
> thanks
> Satish
>
>
> On 8/4/07, Trustin Lee <tr...@gmail.com> wrote:
> >
> > On 8/4/07, satish viswanatham <satish.viswanatham@gmail.com > wrote:
> > > Hi
> > >
> > > I quickly looked through the MINA APIs (mainly 1.x). I could not find
> > a way
> > > to set DF (do not fragment) bit.
> > >
> > > DatagramSessionConfig does not seem to have a method for this? Is that
> >
> > > possible in MINA?
> > >
> > > Basically I need a Java UDP server can tell the client the maximum MTU
> > in
> > > both directions.
> >
> > Is there any way to set the DF flag in Java (not using MINA)?
> >
> > Trustin
> > --
> > what we call human nature is actually human habit
> > --
> > http://gleamynode.net/
> > --
> > PGP Key ID: 0x0255ECA6
> >
>
>
Re: Is there a way to set DF bit in the IP packet?
Posted by Trustin Lee <tr...@gmail.com>.
On 8/7/07, satish viswanatham <sa...@gmail.com> wrote:
> Sure. I can take a look at it. Is there any documentation or sample
> Transport implementation?
Unfortunately, there's no documentation on implementing a new
transport yet. You could take a look into an existing transport
implementations.
There are three implementations: NIO UDP, NIO TCP, and serial port
communication. You could start from NIO UDP or serial port
communication transport implementation because they are quite simple.
And please take advantage from this mailing list. We will give you
the answers for your questions asap.
HTH,
Trustin
--
what we call human nature is actually human habit
--
http://gleamynode.net/
--
PGP Key ID: 0x0255ECA6
Re: Is there a way to set DF bit in the IP packet?
Posted by satish viswanatham <sa...@gmail.com>.
Sure. I can take a look at it. Is there any documentation or sample
Transport implementation?
thanks
Satish
On 8/6/07, peter royal <pr...@apache.org> wrote:
>
> On Aug 5, 2007, at 11:12 AM, satish viswanatham wrote:
> > I did not see a way to set this in Java SE APIs, but I found a
> > library in
> > Java which lets you set DF bit:
> > http://netresearch.ics.uci.edu/kfujii/jpcap/doc/javadoc/index.html
>
> Since setting that bit is not something that is in the standard java
> libraries, MINA won't be able to set it. You could take one of
> libraries that you found and create a MINA-based transport for it so
> you can use it in MINA. That'd be an excellent contribution!
>
> -pete
>
>
> --
> proyal@apache.org - http://fotap.org/~osi
>
>
>
>
>
Re: Is there a way to set DF bit in the IP packet?
Posted by peter royal <pr...@apache.org>.
On Aug 5, 2007, at 11:12 AM, satish viswanatham wrote:
> I did not see a way to set this in Java SE APIs, but I found a
> library in
> Java which lets you set DF bit:
> http://netresearch.ics.uci.edu/kfujii/jpcap/doc/javadoc/index.html
Since setting that bit is not something that is in the standard java
libraries, MINA won't be able to set it. You could take one of
libraries that you found and create a MINA-based transport for it so
you can use it in MINA. That'd be an excellent contribution!
-pete
--
proyal@apache.org - http://fotap.org/~osi
Re: Is there a way to set DF bit in the IP packet?
Posted by satish viswanatham <sa...@gmail.com>.
I did not see a way to set this in Java SE APIs, but I found a library in
Java which lets you set DF bit:
http://netresearch.ics.uci.edu/kfujii/jpcap/doc/javadoc/index.html
thanks
Satish
On 8/4/07, Trustin Lee <tr...@gmail.com> wrote:
>
> On 8/4/07, satish viswanatham <sa...@gmail.com> wrote:
> > Hi
> >
> > I quickly looked through the MINA APIs (mainly 1.x). I could not find a
> way
> > to set DF (do not fragment) bit.
> >
> > DatagramSessionConfig does not seem to have a method for this? Is that
> > possible in MINA?
> >
> > Basically I need a Java UDP server can tell the client the maximum MTU
> in
> > both directions.
>
> Is there any way to set the DF flag in Java (not using MINA)?
>
> Trustin
> --
> what we call human nature is actually human habit
> --
> http://gleamynode.net/
> --
> PGP Key ID: 0x0255ECA6
>
Re: Is there a way to set DF bit in the IP packet?
Posted by Trustin Lee <tr...@gmail.com>.
On 8/4/07, satish viswanatham <sa...@gmail.com> wrote:
> Hi
>
> I quickly looked through the MINA APIs (mainly 1.x). I could not find a way
> to set DF (do not fragment) bit.
>
> DatagramSessionConfig does not seem to have a method for this? Is that
> possible in MINA?
>
> Basically I need a Java UDP server can tell the client the maximum MTU in
> both directions.
Is there any way to set the DF flag in Java (not using MINA)?
Trustin
--
what we call human nature is actually human habit
--
http://gleamynode.net/
--
PGP Key ID: 0x0255ECA6