[Winpcap-users] Problem about receive the packet sent by self

[Gianluca Varenni]

Sam,

there is actually an easier way to do that (if you do not need to support NT4). Open the device with pcap_open and use the flag PCAP_OPENFLAG_NOCAPTURE_LOCAL.

The sample UserLevelBridge shows the usage of this flag.

Have a nice day
GV



From: fly_2u 
Sent: Monday, March 01, 2010 6:01 PM
To: winpcap-users at winpcap.org 
Subject: Re: [Winpcap-users] Problem about receive the packet sent by self


Thanks Helmut.  Could the filter be positioned on the Driver layer?  If could, how to write the filter string and then pcap_setfilter(...)?


在2010-03-01 20:01:36，"Helmut Vaupotitsch" <hv at itec-audio.com> 写道：

  I just filter out unwanted packets (in your case, packets sent by your app) by comparing ether.source with the MAC address of the bound adapter.

  Best regards
  Helmut

  fly_2u schrieb: 
    Hi experts,
      There is a problem about use pcap_next_ex(...) to receive packet in Windows XP SP3.  This function will be unexpected to receive the packet sent by the function pcap_sendpacket(...) in the same port.  And when I use pcap_setdirection(m_pcapHandle, PCAP_D_IN) to set it, it will return -1, the error info is "Setting direction is not implemented on this platform".  How could I implement the functionality that the pcap_next_ex(...) don't receive packet sent by pcap_sendpacket?  Any help from you will be highly appreciated.  Thanks!

    BR.
    Sam




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