[Winpcap-users] Unexpected Receive Rate Behavior in WinPcap

Gianluca Varenni gianluca.varenni at cacetech.com
Sat Mar 31 00:45:43 GMT 2007

What is the rate of the transmission? Are you using pcap_send (or similar under jpcap) to send the packets? 

If so, you are probably controlling the rate by doing something like


Can you tell me if the delay of few seconds is for the call to pcap_send?

Have a  nice day

  ----- Original Message ----- 
  From: Omar Abdul-Baki 
  To: winpcap-users at winpcap.org 
  Sent: Friday, March 23, 2007 7:56 AM
  Subject: [Winpcap-users] Unexpected Receive Rate Behavior in WinPcap

  Hello Everyone,
                     I'm having a small issue with a small application I wrote which uses jpcap; a java wrapper for Winpcap. I have written a client-server app in java. I'm using jpcap to listen and send packets from client to the server. My problem is that when I send a large burst of packets, 99% or so of the packets arrive at the rate they where sent, then there is a stall for a few seconds before the final ~1% packets are received. When I used Wreshark to monitor, I saw the same behavior. Has someone come across this problem before? Is this a known issue winpcap? 
  Thanks for your help,

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