Implement tcp/ip bandwidth shaping for win7, how?
in [Device Drivers]
|
Prev: how about implement network bandwidth shaping for win7?
Next: googlegroups ion free today your masswage click me $100 win .................................
From: Fei Zhang on 1 Jul 2010 00:50 I wanna implement a traffic shaper for win7 to limit some application's downloading speed.If I write a ndis IM driver and limit the receiving speed from the IM driver, the IM driver should put the application's rx frames into a queue to limit its receiving speed, that will use out the NIC miniport driver's rx buffer so that the NIC will send pause frame to the partner. Then all other application's receiving performance will decline too. This is not what I expect. And it seems that Winsock Kernel and Windows Filtering Platform can't be used to shape traffic, limit receiving speed, either. I know some firewall for xp uses TDI driver to shape traffic, but TDI is obsolete on win7 now. What should I do? Any suggestions or any kind of keywords will be appreciated. Thanks a lot in advance. __________ Information from ESET NOD32 Antivirus, version of virus signature database 5241 (20100630) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
From: Fei Zhang on 1 Jul 2010 03:08 It seems that WFP can implement it. First of all WFP indicates data segments to STREAM and not IP packets. And dropping data segments from STEAM layer will have no bearing on the seq# that TCP acks the remote peer -- it would still ack the full amount indicated and only withheld/discard the blocked section from the receiving application. I'm a little confused not. If my WFP callout defer these inbound packets, but the tcp stack still ack the full amount indicated, then the remote peer will keep sending tcp packets. Then will the WFP callout use out the memory? Because teh WFP callout defer these packets and it should keep these packets in memory until the WFP callout indicate these inbound packets finally. Thanks a lot. Fei Zhang __________ Information from ESET NOD32 Antivirus, version of virus signature database 5241 (20100630) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
From: Pavel A. on 1 Jul 2010 03:26 "Fei Zhang" <zhangandfei(a)126.com> wrote in message news:uoMOpwOGLHA.5668(a)TK2MSFTNGP04.phx.gbl... ............. > If my WFP callout defer these inbound packets, but the tcp stack still ack > the full amount indicated, then the remote peer will keep sending tcp > packets. Then will the WFP callout use out the memory? > Because teh WFP callout defer these packets and it should keep these > packets in memory until the WFP callout indicate these inbound packets > finally. WFP by itself does not defer data or consume lot of RAM. Who makes the problem, is responsible to solve it. Use your creativity. Or, install 64 bit version with more RAM :) -pa
From: Fei Zhang on 6 Jul 2010 05:22
Thank you Pavel very much for your greate help. I'm a little confused about the WFP api names yet, such as FwpsCalloutRegister( ) and FwpmCalloutAdd, what does 'Fwps' and 'Fwpm' refer to? Why don't they use the same prefix 'WFP'? Thanks Fei Zhang __________ Information from ESET NOD32 Antivirus, version of virus signature database 5253 (20100705) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com |