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Subject: [dtn-users] making many sessions in using DTN
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Dear folks.

I want test a protocol that can be compared with DTN.
For my testing, I have to make many TCP session and test file transmission.

Where should I revise inside the code to make many TCP session for end to
end connection?
I can't figure out where should I start to work on the code even at a
glance.
Even Just small hint for retouching will be appreciated.

Thank you a lot.

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<div>Dear folks.</div>
<div>&nbsp;</div>
<div>I want test a protocol that can be compared with DTN.</div>
<div>For my testing, I have to make many TCP session and test file transmission.</div>
<div>&nbsp;</div>
<div>Where should I revise inside the code to make many TCP session for end to end connection?&nbsp;</div>
<div>I can&#39;t figure out where should I start to work on the code even at a glance.</div>
<div>Even Just small hint for retouching will be appreciated.</div>
<div>&nbsp;</div>
<div>Thank you a lot.</div>
<div>&nbsp;</div>
<div>&nbsp;</div>

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Thread-Topic: [dtn-users] [dtn-interest] Compile errors on "make" in Cygwin
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See
http://cygwin.com/ml/cygwin/2005-04/msg01017.html

Support on Cygwin for various d_blah has been partial;
d_ino support was withdrawn in .19 and then
later fixed after some outcry.

(http://personal.ee.surrey.ac.uk/Personal/L.Wood/software/SaVi/building-u=
nder-Windows/cygwin-1.5.19-problem.html
has notes on that.)

I suspect you may achieve more lobbying the Cygwin maintainers and
arguing that performance overheads in Cygwin are pretty meaningless,
given that anyone using it favours compatibility over speed.

http://www.boingboing.net/2008/01/21/wubi-install-ubuntu.html
Wubi may provide an alternative to Cygwin; haven't tried it.

L.

<http://www.ee.surrey.ac.uk/Personal/L.Wood/><L.Wood@surrey.ac.uk>



-----Original Message-----
From: dtn-users-bounces@mailman.dtnrg.org on behalf of Michael Demmer
Sent: Wed 2008-01-23 22:36
To: Gaurav Saxena
Cc: dtn-users
Subject: Re: [dtn-users] [dtn-interest] Compile errors on "make" in =
Cygwin
=20
Hi Garuav,

Unfortunately DTN2 support on Cygwin has suffered from some bit rot =20
and so it's not working currently.

If you want to take time to fix it and then have patches that you'd =20
like me to commit back to the main tree, please feel free to send =20
them my way, but I can't devote any time to getting the Cygwin stuff =20
working again right now.

-mike

ps. I've cc'd dtn-users which is the appropraite list for DTN2-=20
related questions


On Jan 23, 2008, at 1:58 PM, Gaurav Saxena wrote:

> Hi All,
>
> I am trying to install DTN2 on Cygwin (latest version: 1.5.27-7). I =20
> got success when I ran:-
>
> ./configure -C --disable-ecl --disable-edp;
>
> However after executing above instruction I did 'make': - I get the =20
> following error-
>
> /io/FileUtils.cc: line 133:error:   'struct dirent' has no member =20
> named 'd_type'
> /io/FileUtils.cc: line 133: error:  'DT_DIR' undeclared <first use =20
> this function>
>
> compilation stops in 'io' directory of parent 'oasys' directory.
>
> Please help me in resolving the above error.
>
> Thanks in advance.
>
> Gaurav

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<TITLE>RE: [dtn-users] [dtn-interest] Compile errors on &quot;make&quot; =
in Cygwin</TITLE>
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<P><FONT SIZE=3D2>See<BR>
<A =
HREF=3D"http://cygwin.com/ml/cygwin/2005-04/msg01017.html">http://cygwin.=
com/ml/cygwin/2005-04/msg01017.html</A><BR>
<BR>
Support on Cygwin for various d_blah has been partial;<BR>
d_ino support was withdrawn in .19 and then<BR>
later fixed after some outcry.<BR>
<BR>
(<A =
HREF=3D"http://personal.ee.surrey.ac.uk/Personal/L.Wood/software/SaVi/bui=
lding-under-Windows/cygwin-1.5.19-problem.html">http://personal.ee.surrey=
.ac.uk/Personal/L.Wood/software/SaVi/building-under-Windows/cygwin-1.5.19=
-problem.html</A><BR>
has notes on that.)<BR>
<BR>
I suspect you may achieve more lobbying the Cygwin maintainers and<BR>
arguing that performance overheads in Cygwin are pretty meaningless,<BR>
given that anyone using it favours compatibility over speed.<BR>
<BR>
<A =
HREF=3D"http://www.boingboing.net/2008/01/21/wubi-install-ubuntu.html">ht=
tp://www.boingboing.net/2008/01/21/wubi-install-ubuntu.html</A><BR>
Wubi may provide an alternative to Cygwin; haven't tried it.<BR>
<BR>
L.<BR>
<BR>
&lt;<A =
HREF=3D"http://www.ee.surrey.ac.uk/Personal/L.Wood/">http://www.ee.surrey=
.ac.uk/Personal/L.Wood/</A>&gt;&lt;L.Wood@surrey.ac.uk&gt;<BR>
<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: dtn-users-bounces@mailman.dtnrg.org on behalf of Michael =
Demmer<BR>
Sent: Wed 2008-01-23 22:36<BR>
To: Gaurav Saxena<BR>
Cc: dtn-users<BR>
Subject: Re: [dtn-users] [dtn-interest] Compile errors on =
&quot;make&quot; in Cygwin<BR>
<BR>
Hi Garuav,<BR>
<BR>
Unfortunately DTN2 support on Cygwin has suffered from some bit =
rot&nbsp;<BR>
and so it's not working currently.<BR>
<BR>
If you want to take time to fix it and then have patches that =
you'd&nbsp;<BR>
like me to commit back to the main tree, please feel free to =
send&nbsp;<BR>
them my way, but I can't devote any time to getting the Cygwin =
stuff&nbsp;<BR>
working again right now.<BR>
<BR>
-mike<BR>
<BR>
ps. I've cc'd dtn-users which is the appropraite list for DTN2-<BR>
related questions<BR>
<BR>
<BR>
On Jan 23, 2008, at 1:58 PM, Gaurav Saxena wrote:<BR>
<BR>
&gt; Hi All,<BR>
&gt;<BR>
&gt; I am trying to install DTN2 on Cygwin (latest version: 1.5.27-7). =
I&nbsp;<BR>
&gt; got success when I ran:-<BR>
&gt;<BR>
&gt; ./configure -C --disable-ecl --disable-edp;<BR>
&gt;<BR>
&gt; However after executing above instruction I did 'make': - I get =
the&nbsp;<BR>
&gt; following error-<BR>
&gt;<BR>
&gt; /io/FileUtils.cc: line 133:error:&nbsp;&nbsp; 'struct dirent' has =
no member&nbsp;<BR>
&gt; named 'd_type'<BR>
&gt; /io/FileUtils.cc: line 133: error:&nbsp; 'DT_DIR' undeclared =
&lt;first use&nbsp;<BR>
&gt; this function&gt;<BR>
&gt;<BR>
&gt; compilation stops in 'io' directory of parent 'oasys' =
directory.<BR>
&gt;<BR>
&gt; Please help me in resolving the above error.<BR>
&gt;<BR>
&gt; Thanks in advance.<BR>
&gt;<BR>
&gt; Gaurav<BR>
</FONT>
</P>

</BODY>
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Hi Garuav,

Unfortunately DTN2 support on Cygwin has suffered from some bit rot  
and so it's not working currently.

If you want to take time to fix it and then have patches that you'd  
like me to commit back to the main tree, please feel free to send  
them my way, but I can't devote any time to getting the Cygwin stuff  
working again right now.

-mike

ps. I've cc'd dtn-users which is the appropraite list for DTN2- 
related questions


On Jan 23, 2008, at 1:58 PM, Gaurav Saxena wrote:

> Hi All,
>
> I am trying to install DTN2 on Cygwin (latest version: 1.5.27-7). I  
> got success when I ran:-
>
> ./configure -C --disable-ecl --disable-edp;
>
> However after executing above instruction I did 'make': - I get the  
> following error-
>
> /io/FileUtils.cc: line 133:error:   'struct dirent' has no member  
> named 'd_type'
> /io/FileUtils.cc: line 133: error:  'DT_DIR' undeclared <first use  
> this function>
>
> compilation stops in 'io' directory of parent 'oasys' directory.
>
> Please help me in resolving the above error.
>
> Thanks in advance.
>
> Gaurav
> _______________________________________________
> dtn-interest mailing list
> dtn-interest@mailman.dtnrg.org
> http://maillists.intel-research.net/mailman/listinfo/dtn-interest



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The dtnsend application currently doesn't differentiate between the  
different report types, as the code assumes that only one report will  
come per bundle that's transmitted, so it would be inferrable from  
the context. Granted, the option parsing part of the application  
should probably only let you pick one of the different report types,  
and the printing code could be modified to indicate which report type  
was actually triggered, so as to make it clearer.

Better yet would be an auxiliary application that solely listens for  
status reports and prints them out to the screen. Then you'd run  
dtnsend with a different replyto eid and point that eid at the status  
report printer application.

Unfortunately that doesn't exist at the moment, but it would be easy  
to write and I'd be happy to add it to the repository. Again, I'll  
add it to the todo list, unless someone else on the list wants to  
pipe up and implement it...

-m



On Jan 15, 2008, at 10:33 AM, Smith, Brian J wrote:

> How do I determine what type of receipt I am receiving if I set the
> flags to get multiple receipt types?  I am using the
> DTN2/apps/dtnsend.cc example application for testing.  For example,  
> if I
> set the delivery options (dtn_bundle_spec_t dopts) to get receipts for
> end-to-end delivery, bundle reception, and bundle forwarding, how  
> can I
> determine what type of receipt I'm getting back at each stage of
> delivery?  I can't figure out how to differentiate between multiple
> reception/forwarding/end-to-end bundle delivery receipts.
>
> Thanks for your help,
> Brian
>
> _______________________________________________
> dtn-users mailing list
> dtn-users@mailman.dtnrg.org
> http://maillists.intel-research.net/mailman/listinfo/dtn-users



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I don't personally have any plans to address this in the near term,  
but it's on the (admittedly long) todo list. No promises for when it  
might be released however, sorry.

If you're interested in working on this, I'd be happy to lend support  
and accept appropriate patches :)

-mike

On Jan 15, 2008, at 10:50 AM, Smith, Brian J wrote:

> Has this issue been resolved?  We see in dtn_2.5.0 that deletion of
> links at run-time results in the DTN Daemon throwing an error and
> crashing.  Please let us know if there is a specific method for  
> deletion
> of links.  Otherwise, is there an expected build where this capability
> can be used?
>
> Thanks,
> Brian
>
>> I connected to machines by creating link between them at run time.
>> Then I close down the daemon on one node. As a result contact_down
>> event is thrown along with link_unavailable. In response to
>> contact_down event I delete the link. Typing route dump of link
>> dump on the prompt does not show any link except for the one
>> corresponding to /dev/null. Inspite of this I see link unavailable
>> event being thrown. Is this a bug or it is expected to behave like
>> this? I am using cvs code dated 30th Oct.
>
> Deleting links is not actually supported in the current
> implementation due to bugs like this.
>
> -m
>
>
> _______________________________________________
> dtn-users mailing list
> dtn-users@mailman.dtnrg.org
> http://maillists.intel-research.net/mailman/listinfo/dtn-users



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Has this issue been resolved?  We see in dtn_2.5.0 that deletion of
links at run-time results in the DTN Daemon throwing an error and
crashing.  Please let us know if there is a specific method for deletion
of links.  Otherwise, is there an expected build where this capability
can be used?

Thanks,
Brian

> I connected to machines by creating link between them at run time.  
> Then I close down the daemon on one node. As a result contact_down  
> event is thrown along with link_unavailable. In response to  
> contact_down event I delete the link. Typing route dump of link  
> dump on the prompt does not show any link except for the one  
> corresponding to /dev/null. Inspite of this I see link unavailable  
> event being thrown. Is this a bug or it is expected to behave like  
> this? I am using cvs code dated 30th Oct.

Deleting links is not actually supported in the current  
implementation due to bugs like this.

-m




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How do I determine what type of receipt I am receiving if I set the
flags to get multiple receipt types?  I am using the
DTN2/apps/dtnsend.cc example application for testing.  For example, if I
set the delivery options (dtn_bundle_spec_t dopts) to get receipts for
end-to-end delivery, bundle reception, and bundle forwarding, how can I
determine what type of receipt I'm getting back at each stage of
delivery?  I can't figure out how to differentiate between multiple
reception/forwarding/end-to-end bundle delivery receipts.

Thanks for your help,
Brian



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Patched and applied to the main repository, though I had to do a  
subsequent branch merge to take into account the changes that I'd  
made since you generated your patch (changesets 3149:e20adbeb7560 and  
3148:7e59b583c5b8).

-m

ps. I like Mercurial too :)


On Jan 14, 2008, at 4:10 PM, Darren Long wrote:

> Hi,
>
> Not a particularly interesting patch I admit.  This is to get the  
> DTN2 Mercurial tip to compile on Leopard 10.5.1 (Intel).  Also  
> builds on Ubuntu (x86) and Mac OS X Tiger 10.4.11 (PowerPC).
>
> I've got to say that I'm liking Mercurial.  This is the first time  
> I've tried it, and I'm converted.
>
> Darren
>

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# HG changeset patch
# User Darren Long <darren.long@mac.com>
# Date 1200079527 0
# Node ID 9ec3de5af45aa5778bb0588fb6f544b1c72f4ad1
# Parent  3b2d9a3b16371a8f370fa58fb07bd9c180d75f0f
Included header for Mac OS X 10.5.1 compatibility

diff -r 3b2d9a3b1637 -r 9ec3de5af45a applib/sdnv-c.h
--- a/applib/sdnv-c.h	Thu Jan 10 15:18:40 2008 -0800
+++ b/applib/sdnv-c.h	Fri Jan 11 19:25:27 2008 +0000
@@ -20,6 +20,8 @@
 #ifdef __cplusplus
 extern "C" {
 #endif 
+
+#include <sys/types.h>
 
 /**
  * Return the number of bytes needed to encode the given value.

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>
> _______________________________________________
> dtn-users mailing list
> dtn-users@mailman.dtnrg.org
> http://maillists.intel-research.net/mailman/listinfo/dtn-users


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Hi,

Not a particularly interesting patch I admit.  This is to get the DTN2  
Mercurial tip to compile on Leopard 10.5.1 (Intel).  Also builds on  
Ubuntu (x86) and Mac OS X Tiger 10.4.11 (PowerPC).

I've got to say that I'm liking Mercurial.  This is the first time  
I've tried it, and I'm converted.

Darren


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# HG changeset patch
# User Darren Long <darren.long@mac.com>
# Date 1200079527 0
# Node ID 9ec3de5af45aa5778bb0588fb6f544b1c72f4ad1
# Parent  3b2d9a3b16371a8f370fa58fb07bd9c180d75f0f
Included header for Mac OS X 10.5.1 compatibility

diff -r 3b2d9a3b1637 -r 9ec3de5af45a applib/sdnv-c.h
--- a/applib/sdnv-c.h	Thu Jan 10 15:18:40 2008 -0800
+++ b/applib/sdnv-c.h	Fri Jan 11 19:25:27 2008 +0000
@@ -20,6 +20,8 @@
 #ifdef __cplusplus
 extern "C" {
 #endif 
+
+#include <sys/types.h>
 
 /**
  * Return the number of bytes needed to encode the given value.

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Over the past several months, I and a few other people have been  
using mercurial [1] as a version control system for the DTN2  
reference implementation to replace CVS. Based on those experiences,  
we've decided to adopt it as the "official" version control system  
for the development of the DTN2 reference implementation going forward.

Mercurial has a number of advantages over CVS, and I won't try to  
list them all here, but there are a number of good online resources  
available off of the main mercurial web site that explain how  
mercurial is different (and IMO better) than CVS or even newer  
centralized VC systems like subversion.

Despite the fact that Mercurial can be used in a decentralized  
manner, we will continue to host an "official" repository for DTN2  
and its supporting libraries (oasys, etc) on code.dtnrg.org. The  
dtnrg wiki has been updated with information [2] on how to access the  
new mercurial repositories.

We did an initial repository conversion from CVS in October 2007 to  
preserve the old revision history and source file attributions. This  
included all changes up and including to the 2.5.0 release of DTN2.  
Since that time, there have been some relatively significant source  
code reorganization and modifications, as can be seen in the  
mercurial revision history, but the current tip of the mercurial tree  
is stable.

Hopefully this will make it easier for people to use the DTN source  
tree (and will help keep my life as the main source maintainer a  
little easier). Our initial experiences have been positive and we  
hope that will continue going forward.

-m

[1] http://www.selenic.com/mercurial
[2] http://www.dtnrg.org/wiki/UsingMercurial