Re: [BUG] CCID3 - loss not detected if in order

2006-08-18 Thread burakgmail-dccp
Hi Ian, 
 
I had been trying to get a p value other than zero from some days, and I was 
relieved when I read your post yesterday. 
 
So I applied your lossfix and ccid3li patches (and all the other patches in 
http://wand.net.nz/~iam4/dccp/patches/ actually) to my linux boxes (both 
senderreceiver) and started some testing. However, the linux box at the 
receiver side (scenario: sending data from sender to receiver) got freezed 
everytime I played the scenario and I had to switch off/on the machine to get 
it back to life. There seems to be a problem related with the patches I 
applied, maybe txbuff patch. Do you have any idea? 
 
Burak Gorkemli
Ph.D. Candidate
Koc University
Turkey
 


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[BUG] CCID3 - loss not detected if in order

2006-07-20 Thread Ian McDonald

Hi folks,

Loss is not being detected correctly in CCID3 and p never gets to be
anything but 0.

In ccid3_hc_rx_packet_recv the loss code can only be called if
dccp_rx_hist_add_packet returns 1. This only can only return 1 if
packets are out of order. In normal loss this will never return 1. p
therefore does not get set to anything but 0.

This causes CCID3 to send packets too fast which explains some of the
behaviour I'm seeing.

I am thinking about how to fix this at the moment but as always others
are free to dive in!

Ian
--
Ian McDonald
Web: http://wand.net.nz/~iam4
Blog: http://imcdnzl.blogspot.com
WAND Network Research Group
Department of Computer Science
University of Waikato
New Zealand
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