Hi, Are you sure that you are linking against wpcap.lib ?
On Thu, 24 Mar 2005 22:45:11 -0600 Mario Hollibaugh <[EMAIL PROTECTED]> wrote: > I am trying to develop a compact, customized-to-my-purposes packet > sniffer using VC++ v6.0. It was recommended to me that instead of > writing a program using hardware interfacing and working directly with > interrupts, to take a look at and use the WinPCap library. Normally I > can hack my way through things with computers, but right now I am so > frustrated I could cry. > > <>When I look at the documentation (and believe me, I have spent nearly > 15 hours reading through the docs trying to help myself out) I notice 2 > things: 1) documentation entitled "WinPcap tutorial: a step by step > guide to program WinPcap", and 2) WinPcap internals" under which are > "NPf driver internals manual" and "Packet Driver API developer's > manual". Through no amount of reading, or posting in my usual > newsgroups, have I been able to determine which section pertains to me. > Do I want to know how to "program WinPcap", or do I want to use the > "Packet Driver API's"? <> > > Furthermore, I can't "build the NPF driver" like it talks about in one > of the read-me's that came with my download for WinPcap source v 3.0, > because I don't have a DDK (driver development kit). Do I need to be > able to compile that in order to use the WinPcap library? Or do I only > need to take the precompiled library that comes with the download, put > it in the included libraries, and also make sure I get all the .h and .c > files that came with the source into an included path? <> > > Moving on, when I tried to read the "WinPcap tutorial: a step by step > guide to program WinPcap" there are many sample programs. It seems to > me like the obvious thing to do is to compile/build/run these porgrams, > then read over the analysis provided in the tutorials. However (and > this has been MOST frustrating so far) EVERY program that I try to > compile give me "unresolved external symbols" errors when linking. This > error basically means "you have a data member or a function that is > defined in one of your header files, but it's never implemented anywhere > in a corresponding .c or .lib file. How can this be? I'll give a > concrete example: <> > > The very first sample program in the tutorial is "Obtaining the Device > List". When I cut and paste the code into VC++ 6.0, at link-time I get > the following error: <> > > Linking... > main.obj : error LNK2001: unresolved external symbol _pcap_freealldevs > main.obj : error LNK2001: unresolved external symbol _pcap_findalldevs > Debug/blah.exe : fatal error LNK1120: 2 unresolved externals > Error executing link.exe. <> > > So I go and look up pcap_freealldevs in the online documentation. The > documentation tells me that pcap_freealldevs is defined in pcap.h, and > is implemented in inet.c. I check my include and source directories in > my VC++ options, and the directories containing the files pcap.h and > inet.c are both listed. So why am I getting an unresolved external > symbol error? Why is VC++ not seeing the functions pcap_freealldevs and > pcap_findalldevs in inet.c, like it should? <> > > I'm sorry this is such a long post, but I am ready to pull my hair out. > I am simply floored right now... any help in any form whatsoever is > going to be much appreciated, thanks. <> > > Cheers, > Mario Flamur Rogova ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[email protected]/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================
