UDP Convergence Layer File Transfer

Kharouta, John F

14 Sep 2017 14 Sep '17

12:27 a.m.

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

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Stephan Rottmann

14 Sep 14 Sep

12:56 p.m.

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

Kharouta, John F

10:33 p.m.

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 <ibr-dtn-request@ibr.cs.tu-bs.demailto:ibr-dtn-request@ibr.cs.tu-bs.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

Stephan Rottmann

15 Sep 15 Sep

11:47 a.m.

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

-- Stephan Rottmann Institut für Betriebssysteme und Rechnerverbund Tel.: +49-531-391-3154 Mühlenpfordtstraße 23 Fax.: +49-531-391-5936 TU Braunschweig D-38106 Braunschweig

Kharouta, John F

1:22 a.m.

Hello,

I am having trouble using the dgram:udp option in my configuration file. Below is an excerpt from my log file that shows an error. Dtnping does not seem to work using the dgram CL either.

Any help with this would be appreciated.

Thu Sep 14 16:19:18 2017 INFO NativeDaemon: Datagram ConvergenceLayer (UDP) added on eth0:4556 Thu Sep 14 16:19:18 2017 DEBUG.90 SocketState: SocketState transition: IDLE -> SELECT Thu Sep 14 16:19:18 2017 DEBUG.90 SelectGuard: SelectGuard counter set to 1 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: listen to [ff02::142]:4551 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: listen to [224.0.0.142]:4551 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: add interface eth0 Thu Sep 14 16:19:18 2017 DEBUG.56 ConnectionManager: New node available: Node: dtn://IBR-1.dtn [ -5#static local#UDP#ip=10.0.0.10;port=4556;#expire=0; ] Thu Sep 14 16:19:18 2017 DEBUG.10 UDPDatagramService: can not join [ff02::1]:5551 on eth0; fd not available

Thanks, John

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.

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 <ibr-dtn-request@ibr.cs.tu-bs.demailto:ibr-dtn-request@ibr.cs.tu-bs.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

Stephan Rottmann

11:49 a.m.

Could you post the part of the configuration file? IIRC, dgram:udp has some limitations regarding the port. But not sure, if it was for discovery only. The static connection to dtn://IBR-1.dtn seems to use the standard UDP- CL, not dgram:udp... Maybe you should comment out the static connection. Stephan Am Donnerstag, den 14.09.2017, 23:22 +0000 schrieb Kharouta, John F:

...

Hello, I am having trouble using the dgram:udp option in my configuration file. Below is an excerpt from my log file that shows an error. Dtnping does not seem to work using the dgram CL either. Any help with this would be appreciated. Thu Sep 14 16:19:18 2017 INFO NativeDaemon: Datagram ConvergenceLayer (UDP) added on eth0:4556 Thu Sep 14 16:19:18 2017 DEBUG.90 SocketState: SocketState transition: IDLE -> SELECT Thu Sep 14 16:19:18 2017 DEBUG.90 SelectGuard: SelectGuard counter set to 1 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: listen to [ff02::142]:4551 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: listen to [224.0.0.142]:4551 Thu Sep 14 16:19:18 2017 INFO DiscoveryAgent: add interface eth0 Thu Sep 14 16:19:18 2017 DEBUG.56 ConnectionManager: New node available: Node: dtn://IBR-1.dtn [ -5#static local#UDP#ip=10.0.0.10;port=4556;#expire=0; ] Thu Sep 14 16:19:18 2017 DEBUG.10 UDPDatagramService: can not join [ff02::1]:5551 on eth0; fd not available 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

-- Stephan Rottmann Institut für Betriebssysteme und Rechnerverbund Tel.: +49-531-391-3154 Mühlenpfordtstraße 23 Fax.: +49-531-391-5936 TU Braunschweig D-38106 Braunschweig

Kharouta, John F

19 Sep 19 Sep

8:22 p.m.

Here is the configuration file I used prior to changing to dgram:udp. I believe I only changed net_lan1_type when I tried to test dgram:udp.

local_uri = dtn://IBR-1.dtn logfile = ibrdtn/log/ibrdtn.log G = 1,000,000,000 bytes M = 1,000,000 bytes K = 1,000 bytes limit_bundles_in_transit = 25 fragmentation = yes limit_payload = 64K storage_path = ibrdtn/bundles storage = default discovery_address = 224.0.0.142 discovery_interval = 3 discovery_announce = 0 net_interfaces = lan1 net_lan1_type = udp net_lan1_interface = eth0 net_lan1_port = 4556 routing = default routing_forwarding = yes routing_prefer_direct = no route1 = ^dtn://IBR-2.dtn/[[:alpha:]] dtn://IBR-2.dtn static1_address = 10.0.0.12 static1_port = 4556 static1_uri = dtn://IBR-2.dtn static1_proto = udp static1_immediately = yes

Thanks, John From: Stephan Rottmann [mailto:rottmann@ibr.cs.tu-bs.de] Sent: Friday, September 15, 2017 2:50 AM To: Kharouta, John F; ibr-dtn@ibr.cs.tu-bs.de Subject: Re: [ibr-dtn] UDP Convergence Layer File Transfer

Could you post the part of the configuration file? IIRC, dgram:udp has some limitations regarding the port. But not sure, if it was for discovery only. The static connection to dtn://IBR-1.dtn seems to use the standard UDP-CL, not dgram:udp... Maybe you should comment out the static connection.

Stephan

Am Donnerstag, den 14.09.2017, 23:22 +0000 schrieb Kharouta, John F: Hello,

I am having trouble using the dgram:udp option in my configuration file. Below is an excerpt from my log file that shows an error. Dtnping does not seem to work using the dgram CL either.

Any help with this would be appreciated.

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.demailto: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.

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 <ibr-dtn-request@ibr.cs.tu-bs.demailto:ibr-dtn-request@ibr.cs.tu-bs.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

Stephan Rottmann Institut für Betriebssysteme und Rechnerverbund

Tel.: +49-531-391-3154 Mühlenpfordtstraße 23

Fax.: +49-531-391-5936 TU Braunschweig D-38106 Braunschweig

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