How to create an application that uses wpcap.dll
To create an application that uses wpcap.dll with Microsoft Visual C++, follow the next
steps:
- Include the file pcap.h at the beginning of every source file that
uses the functions exported by library.
- If your program uses Win32 specific functions of WinPcap, remember to include WPCAP
among the preprocessor definitions.
- Set the options of the linker to include the wpcap.lib library
file. wpcap.lib is generated compiling the WinPcap source code and can
be found in the WinPcap developer's pack.
- Set the options of the linker to include the winsock library file (for
example wsock32.lib). This file is distributed with the C compiler
and contains the socket functions for Windows. It is needed by some libpcap
functions.
Remember that:
- To add a preprocessor definition, you must select Settings from the Project menu, then select C/C++
from the tab control, and under the category General, you must add
the definition under the Preprocessor Definitions text box.
- To add a new library to the project with Microsoft Visual C++, you must
select Settings from the Project menu, then select Link
from the tab control, and then add the name of the new library in the Objcet/library
modules editbox.
- To add a new path where Microsoft Visual C++ will look for the libraries,
you must select Options from the Tools menu, then Link
from the tab control, library files from the show directories
for combobox, and the add the path in the directories box.
- To add a new path where Microsoft Visual C++ will look for include files, you must select Options from the Tools menu, then Link
from the tab control, include files from the show directories
for combobox, and the add the path in the directories box.
Sample programs
A couple of sample programs are provided to show the usage of the WinPcap API. The
source of the examples, along with all the files needed to compile and run them, can be found in the Developer's
Pack. For didactic purpose we provide here a browsable
version of the code: it is possible to click on the variables and functions to jump the documentation of each of
them.
For a more complete and better documented set of samples, give a look at the WinPcap
Tutorial Section.