Hi,
I am using pcap_next_ex() in my application in a loop to capture all packets
on an ethernet device. I have compared the amount of packets that my
application captures to what ethereal captures and my calls to pcap_next_ex()
are just not picking up everything. More importantly, the packets I need it
to capture are not being captured all the time. My application is in constant
communication with a device to monitor its status. I used ethereal to verify
the device was always replying to my application. The code snippets below are
written in Delphi. Here is my call to pcap_open():
fp := pcap_open(PAnsiChar(ADeviceName), 65536, PCAP_OPENFLAG_PROMISCUOUS,
1, nil, errorbuf);
Here is my call to pcap_next_ex() which is in a loop:
ret := pcap_next_ex(fp, @pktheader, @pktdata);
I can provide more code if you want it. pcap_next_ex() times out a lot. Am I
doing something wrong here? Are there other reasons that pcap_next_ex() would
timeout instead of capturing packets? Any ideas would be appreciated.
Thanks,
Tom
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