Hi, 10M is too big for UDP. You could try something around 65000 Byte. Best, Stephan Am Donnerstag, den 14.09.2017, 20:33 +0000 schrieb Kharouta, John F:
Hello, I am using the standard UDP for CL, I will try dgram:udp. I believe I did have fragmentation enabled as well as a max payload of 10M. Thanks, John From: Stephan Rottmann [mailto:rottmann@ibr.cs.tu-bs.de] Sent: Thursday, September 14, 2017 3:56 AM To: Kharouta, John F; ibr-dtn@ibr.cs.tu-bs.de Subject: Re: [ibr-dtn] UDP Convergence Layer File Transfer Hi, are you using the "standard" UDP-CL, or "dgram:udp"? The former one accepts only bundles with the size of up to the MTU (or 64kByte, as it is the max length for a UDP packet), iirc. So try "dgram:udp" instead, and it should work, OR enable fragmentation and set the maximum payload size. Then, IBR-DTN will split the data to be sent automatically into several bundles and reassemble the parts at the receiver side. Best, Stephan Am Mittwoch, den 13.09.2017, 22:27 +0000 schrieb Kharouta, John F: Hello All, I am having some issues transferring a file using dtnsend/recv in a simple two node test bed using UDP convergence layer. The nodes are configured for static routing and dtnping functions as expected. The issue I run into is when I attempt to send a file greater than ~130 KB and the result is the dtnrecv command doesn’t close (the file is not successfully transferred) and I can see in my bundle storage area a total size of bundles just slightly less than my expected file size. The file size is specific because file sizes less than ~130 KB transfer just fine using the UDP convergence layer. I am wondering if there is an issue with UDP convergence layer as changing nothing in my configuration besides the convergence to TCP layer, fixes the issue. Any help would be appreciated. IBR-DTN version: 1.0.1 (build 294b543) Thanks, John -- !! This message is brought to you via the `ibr-dtn' mailing list. !! Please do not reply to this message to unsubscribe. To unsubscribe or adjust !! your settings, send a mail message to s.de> !! or look at https://mail.ibr.cs.tu-bs.de/listinfo/ibr-dtn. -- Stephan Rottmann Institut für Betriebssysteme und Rechnerverbund Tel.: +49-531-391-3154 Mühlenpfordtstraße 23 Fax.: +49-531-391-5936 TU Braunschweig D-38106 Braunschweig