Unable to install on Windows

[wgaylord]

Runing pip install pypcap returns

 Collecting pypcap
   Using cached pypcap-1.1.5.tar.gz
     Complete output from command python setup.py egg_info:
     pcap.h not found

     ----------------------------------------
 Command "python setup.py egg_info" failed with error code 1 in c:\users\chibi\appdata\local\temp\pip-build-luqb2x\pypcap\

I am on windows... (Which might be the whole problem)

[markcoker]

http://www.winpcap.org/devel.htm Place these files in proper places, installs fine on windows.

[nonZero]

You should probably add some information on README.py regarding requirements. see: http://stackoverflow.com/questions/42567086/how-to-solve-this-pip-install-pypcap-error-both-in-windows-and-ubuntu-linux

[hellais]

It would be great if somebody with a windows machine and windows knowledge could open a PR with the relevant information on how to get it working on windows.

[hellais]

We now have better installation instructions for windows and @nuald made some changes to fix some of the issues you may have been encountering.

Feel free to re-open this ticket if it's not fixed.

[geajack]

http://www.winpcap.org/devel.htm Place these files in proper places, installs fine on windows.

What are "the proper places"?

[hellais]

@geajack check the windows instructions in the Readme: https://github.com/pynetwork/pypcap#installation-from-sources.

Please download the Npcap SDK, unpack the archive and put it into the sibling directory as wpdpack (setup.py will discover it).

[drebbe-intrepid]

I just ran into this issue also on Windows.

This is the solution:

• make a directory (we will call it pypcap_build in C:\)
• extract the SDK into c:\pypcap_build\libpcap (https://nmap.org/npcap/dist/npcap-sdk-1.03.zip)
• inside c:\pypca_build run git clone https://github.com/pynetwork/pypcap.git --branch v1.2.3
• cd pypcap
• python setup.py install
• enjoy

Now to address this bug I recommend adding support in the setup.py to add an environment variable to the include path, Maybe something like PYPCAP_NPCAP_SDK so it can actually be installed through pip. If the environment variable is not found it should error out instead of complaining it can't find npcap.h.

pseudo code for setup.py find_prefix_and_pcap_h:

if windows:
    try:
        win_path = os.environ['PYPCAP_NPCAP_SDK']
        # append win_path to others
    except KeyError:
        print("Environment Variable 'PYPCAP_NPCAP_SDK' needs to be set for Windows installations.")

I'm unfamiliar with the project and the setup script so hopefully this makes sense.