SetUp Issue

[proflamyt]

I tried running certmitm while intercepting an android https traffic directly to the certmitm listening port , I keep getting the errors below when connections come through

\certmitm\certmitm\util.py", line 244, in sock_to_dest
    dst = (sock.getsockopt(socket.SOL_IP, 80, 16))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: [WinError 10022] An invalid argument was supplied

[aapooksman]

It seems that you're running certmitm on Windows. Is that correct?

Getting the original address with sock.getsockopt seems to only be supported on linux. The functionality in certmitm is similar to how mitmproxy has implemented this.

https://github.com/mitmproxy/mitmproxy/blob/main/mitmproxy/platform/linux.py
https://github.com/mitmproxy/mitmproxy/blob/main/mitmproxy/platform/windows.py

Would something like this work for you to get the ip and port on Windows?

import re
def sock_to_dest(sock): 
    ip, port = sock.getpeername()[:2]
    ip = re.sub(r"^::ffff:(?=\d+.\d+.\d+.\d+$)", "", ip)
    ip = ip.split("%", 1)[0]
    return  ip, port

[proflamyt]

This works fine, thank you. can i make a PR addressing this incase anyone is facing similar issue