<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt">Thanks,<br><br>Actually the idea developed a little after I posted the message, that I didn't have the time to try thoroughly yet, was to have an infinte loop and a flag : when something that I detect in my package is present, it launches the packet sending, and until the flag is set down again I should not lose any passing packages....it was an advice I received, I still need the information from capture to pass into the send , so I don't exactly know how I'll be using a structure or something like that in C.... but the idea was to use pcap_loop() with 1 package only...I'll give pcap_next a try too....It's all a bit fuzzy since I'm new to WinPcap and don't know how much I can take advantage of all of its functionalities.<br><br>Thank you very much, you help was much needed,<br><br>Cri<div
style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: Gianluca Varenni <gianluca.varenni@cacetech.com><br>To: winpcap-users@winpcap.org<br>Sent: Tuesday, February 26, 2008 6:38:48 PM<br>Subject: Re: [Winpcap-users] capture AND send packets on same device<br><br>
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<div><font size="2">Cristina,</font></div>
<div><font size="2"></font> </div>
<div><font size="2">the easiest way to solve your problem is open the pcap device
twice, one for transmission and one for reception, and then use two threads, one
to capture packets and the other one to send packets.</font></div>
<div><font size="2"></font> </div>
<div><font size="2">Also, I suggest you to use pcap_next_ex instead of pcap_loop.
It's much easier to stop the capture thread if you use pcap_next_ex</font></div>
<div><font size="2"></font> </div>
<div><font size="2">Hope it helps</font></div>
<div><font size="2">GV</font></div>
<div><font size="2"></font> </div>
<blockquote style="border-left: 2px solid rgb(0, 0, 0); padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">----- Original Message ----- </div>
<div style="background: rgb(228, 228, 228) none repeat scroll 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>From:</b>
<a rel="nofollow" title="fullmoon_2011@yahoo.com" ymailto="mailto:fullmoon_2011@yahoo.com" target="_blank" href="mailto:fullmoon_2011@yahoo.com">Cristina Ruxandra Ionescu</a> </div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>To:</b> <a rel="nofollow" title="winpcap-users@winpcap.org" ymailto="mailto:winpcap-users@winpcap.org" target="_blank" href="mailto:winpcap-users@winpcap.org">winpcap-users@winpcap.org</a> </div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Sent:</b> Tuesday, February 26, 2008 8:44
AM</div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Subject:</b> [Winpcap-users] capture AND send
packets on same device</div>
<div><br></div>
<div style="font-size: 12pt; font-family: times new roman,new york,times,serif;">hello
everyone,<br><br>I have been looking for a way to do the following: use the
same device chosen from the list using <span style="font-weight: bold; font-style: italic;">pcap_findalldevs()</span> for
both capturing packets and sending packets to the identified MAC on the other
end of my PC (a small card liked through Ethernet ). <br><br>My problem is
that <span style="font-weight: bold; font-style: italic;">pcap_loop()</span><span style="font-weight: bold;"> l</span>oops..forever unless there is an error in
my case, and while I would like to send something to the other end, I would
like not to lose the existing sniff of the device in order not to lose track
of the packets exchanged. (have pcap_loop() and pcap_sendpacket() at once on
same device) .What I do more specifically is identify MACs of the two
sides and want to further download data onto a RAM on the device outside
the PC. How can I do that while still seing my firmware packets and the ACKs
...? <br><br>I seem to find only one other reference of such a question ever
being asked in your mailing lists and other forums, so I'd really appreciate
your help. If I'm unclear I''m here to clear up whatever it is.<br><br>Thanks
in advance<br>
<div> </div><span style="font-family: times new roman,new york,times,serif;"><span style="font-weight: bold;">Cri</span></span></div><br>
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