From: m@rtij.nl.invlalid   
      
   On Mon, 18 Oct 2010 00:50:54 +0000, glen herrmannsfeldt wrote:   
      
   > vl  wrote:   
   >> I need to verify that a proprietary TCP stack is resending a data   
   >> packet when the receiver doesn't send an ACK. Is there a way to build a   
   >> TCP client app (Win32, WinSock, C/C++) that is not sending an ACK on a   
   >> certain data packet?   
   >   
   > There are routers that provide filtering options.   
   >   
   > I believe some, such as the FreeBSD router, allow you to supply a   
   > probability for forwarding a packet.  If you set the probability low,   
   > that should cause some ACKs to be dropped.  Linux might also be able to   
   > do this.   
      
   Yes, Linux can do this too. F.i. you can set it to drop the nth packet of   
   a connection, which should do what you want. Not sure if it does this out   
   of the box or that you need some patch. Have a look at netfilter.org for   
   more info.   
      
   M4   
      
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