attach to a socket in localhost:8787

attach to a socket in localhost:8787

[op132650c]

Hi,

i would like to debug my program remotely, attaching my the gdb to a socket on
localhost:8787. How can i do that?

I've tried target remote 127.0.0.1:8787 and it doesn't work. Ie, the Jboss
application server aborts.

Thanks,
Pedro

Re: attach to a socket in localhost:8787

[Daniel Jacobowitz]

On Thu, Sep 28, 2006 at 09:14:07AM +0100, op132650c@mail.telepac.pt wrote:
> Hi,
> 
> i would like to debug my program remotely, attaching my the gdb to a socket on
> localhost:8787. How can i do that?
> 
> I've tried target remote 127.0.0.1:8787 and it doesn't work. Ie, the Jboss
> application server aborts.

Sorry, but we need a lot more information about what you're doing to
help.  What's running on that port - is it gdbserver?  Does it abort
when you connect or when you try to step or...?

-- 
Daniel Jacobowitz
CodeSourcery

Re: attach to a socket in localhost:8787

[Denis PILAT]

I've worked on debugging a remote connection a few weeks ago,
may be you can use that to analyse the problem:

set debug remote 1

It will give you packet exchanged between gdb and the server.

Denis

Daniel Jacobowitz wrote:

>On Thu, Sep 28, 2006 at 09:14:07AM +0100, op132650c@mail.telepac.pt wrote:
>  
>
>>Hi,
>>
>>i would like to debug my program remotely, attaching my the gdb to a socket on
>>localhost:8787. How can i do that?
>>
>>I've tried target remote 127.0.0.1:8787 and it doesn't work. Ie, the Jboss
>>application server aborts.
>>    
>>
>
>Sorry, but we need a lot more information about what you're doing to
>help.  What's running on that port - is it gdbserver?  Does it abort
>when you connect or when you try to step or...?
>
>  
>

Re: attach to a socket in localhost:8787

[op132650c]

I want to debug my Enterprise archive (ear) that is deployed in Jboss
Application Server.
When I start Jboss Application Server(AS) in debug mode, i've the following
message:


===============================================================================
.
  JBoss Bootstrap Environment
.
  JBOSS_HOME: c:\jboss-4.0.3SP1\bin\\..
.
  JAVA: D:\Java\jdk1.5.0_06\bin\java
.
  JAVA_OPTS: -Xdebug
-Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=y 
-Dprogram.name=debug.bat -Xms128m -Xmx512m
.
  CLASSPATH: D:\Java\jdk1.5.0_06\lib\tools.jar;c:\jboss-4.0.3SP1\bin\\run.jar

".
===============================================================================
.
Listening for transport dt_socket at address: 8787"

I use to debug my ear in Eclipse, creating a remote connection Standard (Socket
Attach) to localhost:8787.

Now, i want to debug my ear using gdb.

I used to do inside gdb:
target remote localhost:8787

but this abort the AS.

I hope that this will help.

Thanks,
Pedro







Citando Daniel Jacobowitz <drow@false.org>:

> On Thu, Sep 28, 2006 at 09:14:07AM +0100, op132650c@mail.telepac.pt wrote:
> > Hi,
> >
> > i would like to debug my program remotely, attaching my the gdb to a socket
> on
> > localhost:8787. How can i do that?
> >
> > I've tried target remote 127.0.0.1:8787 and it doesn't work. Ie, the Jboss
> > application server aborts.
>
> Sorry, but we need a lot more information about what you're doing to
> help.  What's running on that port - is it gdbserver?  Does it abort
> when you connect or when you try to step or...?
>
> --
> Daniel Jacobowitz
> CodeSourcery
>

Re: attach to a socket in localhost:8787

[Daniel Jacobowitz]

On Thu, Sep 28, 2006 at 03:20:47PM +0100, op132650c@mail.telepac.pt wrote:
> Listening for transport dt_socket at address: 8787"
> 
> I use to debug my ear in Eclipse, creating a remote connection Standard (Socket
> Attach) to localhost:8787.
> 
> Now, i want to debug my ear using gdb.
> 
> I used to do inside gdb:
> target remote localhost:8787
> 
> but this abort the AS.

I have no idea what sort of server this is, but it is extremely
unlikely that it speaks the GDB protocol or can communicate with GDB.

-- 
Daniel Jacobowitz
CodeSourcery

Re: attach to a socket in localhost:8787

[Michael Snyder]

On Thu, 2006-09-28 at 09:14 +0100, op132650c@mail.telepac.pt wrote:
> Hi,
> 
> i would like to debug my program remotely, attaching my the gdb to a socket on
> localhost:8787. How can i do that?
> 
> I've tried target remote 127.0.0.1:8787 and it doesn't work. Ie, the Jboss
> application server aborts.

If it's really the localhost, ie. the same IP that gdb is running on,
then you just say "target remote :8787".

Or I think you can say "target remote localhost:8787", but I'm not sure.
The first syntax should work.

Re: attach to a socket in localhost:8787

[Michael Snyder]

On Thu, 2006-09-28 at 11:01 -0400, Daniel Jacobowitz wrote:
> On Thu, Sep 28, 2006 at 03:20:47PM +0100, op132650c@mail.telepac.pt wrote:
> > Listening for transport dt_socket at address: 8787"
> > 
> > I use to debug my ear in Eclipse, creating a remote connection Standard (Socket
> > Attach) to localhost:8787.
> > 
> > Now, i want to debug my ear using gdb.
> > 
> > I used to do inside gdb:
> > target remote localhost:8787
> > 
> > but this abort the AS.
> 
> I have no idea what sort of server this is, but it is extremely
> unlikely that it speaks the GDB protocol or can communicate with GDB.
> 

I think I see the problem (maybe).  Pedro, you're talking about
Java, aren't you?  You were using Eclipse in java-debugging mode?

GDB can't do that -- at least not in the same way.
The gdb socket and the Jboss application server
socket are speaking different languages.

Re: attach to a socket in localhost:8787

[op132650c]

Yes, you right. I didn't know that it was possible GDB and AS having different
protocols.

But, since eclipse debugger is working over jdb, this means that jdb can talk
with the AS. Right??? I haven't still tried with jdb. Only with eclipse
debugger.

Why gdb implements a protocol different from jdb? Where can i get more
information about gdb protocols?

Thanks,
Pedro

Citando Michael Snyder <Michael.Snyder@palmsource.com>:

> On Thu, 2006-09-28 at 11:01 -0400, Daniel Jacobowitz wrote:
> > On Thu, Sep 28, 2006 at 03:20:47PM +0100, op132650c@mail.telepac.pt wrote:
> > > Listening for transport dt_socket at address: 8787"
> > >
> > > I use to debug my ear in Eclipse, creating a remote connection Standard
> (Socket
> > > Attach) to localhost:8787.
> > >
> > > Now, i want to debug my ear using gdb.
> > >
> > > I used to do inside gdb:
> > > target remote localhost:8787
> > >
> > > but this abort the AS.
> >
> > I have no idea what sort of server this is, but it is extremely
> > unlikely that it speaks the GDB protocol or can communicate with GDB.
> >
>
> I think I see the problem (maybe).  Pedro, you're talking about
> Java, aren't you?  You were using Eclipse in java-debugging mode?
>
> GDB can't do that -- at least not in the same way.
> The gdb socket and the Jboss application server
> socket are speaking different languages.
>
>

Re: attach to a socket in localhost:8787

[Michael Snyder]

On Thu, 2006-09-28 at 21:25 +0100, op132650c@mail.telepac.pt wrote:
> Yes, you right. I didn't know that it was possible GDB and AS having different
> protocols.
> 
> But, since eclipse debugger is working over jdb, this means that jdb can talk
> with the AS. Right???

Sounds like.  But this is not the right forum for the question.
We don't really (at least, officially) know anything about jdb.
Only gdb.  ;-)


>  I haven't still tried with jdb. Only with eclipse
> debugger.
> 
> Why gdb implements a protocol different from jdb? Where can i get more
> information about gdb protocols?

Because the gdb protocol predates java by at least 5 years.

Re: attach to a socket in localhost:8787

[Michael Snyder]

Oh, sorry... and:

On Thu, 2006-09-28 at 21:25 +0100, op132650c@mail.telepac.pt wrote:
> Where can i get more information about gdb protocols?

src/gdb/doc, from any recent gdb source tarball.