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TCP Fragmentation   Message List  
Reply | Forward Message #6210 of 6234 |

Hi,

Is there a way I can disable fragmentation in the TCP stack ?

Denis Rheault
Sr. Maintenance Engineering Associate
Telesat
514-528-2207
514-527-6429 fax
drheault@...



This message and any files transmitted with it contains information from Telesat, which may be privileged and/or confidential. If you have received this e-mail in error or are not the intended recipient, you may not use, copy, disseminate or distribute it; do not open any attachments, delete it immediately from your system and notify the sender promptly by e-mail that you have done so. Thank you.
Thu Apr 2, 2009 4:20 pm

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DRheault@...
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Forward 		Message #6210 of 6234 |
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Hi, Is there a way I can disable fragmentation in the TCP stack ? Denis Rheault Sr. Maintenance Engineering Associate Telesat 514-528-2207 514-527-6429 fax ... 		Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
4:20 pm

Google "Nagle" algorithm I am assuming that you want the host computer to send complete packets to the NB module Chris ... From:...
chris ruff
cgruffcgruff
Offline Send Email 		Apr 2, 2009
5:31 pm

No, opposite. The problem I have is that I sent fix length packet of 1224 bytes of payload. Sometime the receiving end TCP get's full and some fragmentation...
Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
6:11 pm

Denis: 1. have you tried the trick of writeall(fd,buf,len) ? Have you tried punching a bunch of NULLs out after your packet to force the NB stack to assemble...
chris ruff
cgruffcgruff
Offline Send Email 		Apr 2, 2009
6:43 pm

#1 already do this. I thought there was a flag I could set in the TCP to stop this.. NULL could still create fragmentation, I will go with you last opinion. ...
Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
7:08 pm

It sounds like you want to use UDP, as your protocol is structure/datagram oriented, and your sending packets of data around. TCP doesn't really work that...
Thomas Taranowski
thomastarano...
Online Now Send Email 		Apr 2, 2009
8:36 pm

Suggest you post this at : http://forum.embeddedethernet.com. The yahoo forum is pretty much defunct, although some of us still watch it out of nostalgia. ......
Thomas Taranowski
thomastarano...
Online Now Send Email 		Apr 2, 2009
7:54 pm

Thanks ... From: netburner_group@yahoogroups.com [mailto:netburner_group@yahoogroups.com] On Behalf Of Thomas Taranowski Sent: Thursday, April 02, 2009 3:53 PM...
Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
7:57 pm

The paylod already as a start header with frame lenght. So normaly the Recv should be able to re-assemble the data if the data rx in te packet is less then...
Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
10:35 pm

Are you looping on the recv() call? You may not recv all of the pending data in a single recv, as you have seen. Usually you need to do something like the...
Thomas Taranowski
thomastarano...
Online Now Send Email 		Apr 2, 2009
11:04 pm

Thom, I am not wokking on the client side. I do the netburner that send the info. My side work's ok :) But I'm trying to change my to to help the guy that does...
Rheault, Denis
DRheault@...
Send Email 		Apr 2, 2009
11:29 pm
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