Hi! A system restart helped a lot... (It is a bit strange.) Finally, after I restarted the PC, my two applications (running on the same PC) can communicate to eachother using a physical ethernet device (that is connected to a HUB to have a live link).
However, it is still not working over the Microsoft Loopback device. Do you have any experience with this loopback device? Thanks, Tamas írta: > Hi! > > I'd like to use WinPCap as a communication channel between applications > running on the same PC. I tried this, but it did not work. > 1. As a first try I started two applications (of mine) that open the same > physical ethernet card (using WinPCAP 4.0.2). The first application sent out > a frame (I was able to capture it using Wireshark running on another > machine, connected to the ethernet card in use), but I was not able to > receive this frame by my other application (running on the same PC as the > sender). > > 2. As a second try, I installed the Microsoft Loopback device, and tried the > same as before, with the same (un)luck. (There was no Wireshark on the other > end, since there is no other end in this case...) > > 3. If I try to capture the traffic using Wireshark on the same PC as the > sender is, it captures nothing. > > I use the ethernet device in PROMISCUOUS mode by setting only the > PCAP_OPENFLAG_PROMISCUOUS flag for pcap_ope n(). Why am I not able to > capture the packet ,sent by my 1st application, in my 2nd application on the > same PC? Is it a theoretical problem, or I have a configuration issue? > > Certainly this all is only a test. I will use PCAP and the ethernet card as > an interface between several machines in the future, but it would be nice if > I could create a "Virtual system" on a single PC too. > > Thank you in advance. > Tamas > > _______________________________________________ > Winpcap-users mailing list > [email protected] > https://www.winpcap.org/mailman/listinfo/winpcap-users >
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