---------- Forwarded message ---------- From: "Sandra Siby" sandrasiby@gmail.com Date: Mar 17, 2014 2:58 PM Subject: Re: [ibr-dtn] Epidemic routing - bundle size issue To: "Johannes Morgenroth" morgenroth@ibr.cs.tu-bs.de Cc:
Hi Johannes,
I have run it several times and am able to replicate the issue. The contact times are not long enough for all bundles to be transmitted but this is what we want. We are ok with bundles being of different sizes as long as the entire amount of data is received at the end (meaning reactive fragmentation works). There were no errors or warnings in the logs.
However, we are using version 0.10.2 (we're running all this in openwrt by the way). Can you tell me which version to use and where I can find it?
Thank you!
Regards, Sandra On Mar 17, 2014 2:45 PM, "Johannes Morgenroth" morgenroth@ibr.cs.tu-bs.de wrote:
Hello Sandra,
in this case is have no concrete idea. There might be a possible hash collision in the summary vector bloom-filter, but this is very unlikely. What about the contact times? Were they long enough to transmit all the bundles? The bundles with the wrong size may be a result of interrupted connections.
Did you checked the daemon log output for errors or warnings? You could check the exact behavior using the log files. Did you run the test a second time with the same result? And finally, which version of the daemon do you use? There are known bugs in the 0.10.2 related to fragmentation (fixed in development branch).
Kind regards, Johannes
Am 17.03.2014 14:33, schrieb Sandra Siby:
Note that there is no 'additional fragment'. There is an equal number of fragments on both sides but their size distribution is different. And if you add up the sizes of fragments obtained on the receiver side, it is less than the total at the sender side. In other words, I think the entire file is not sent. I am unable to extract the file to the application layer.
Any idea why this is the case?
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