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I need to write a packet sniffer in Linux that detects HTTPS packet that are sent and save the url from the request. I found code for this in security-freak and ran it. This code runs and only sniffs the received packet but I need to get the sent packet in the sniffer.
How do I get the sent packet in this code?
I can’t use any library like libcap (forbidden).
The code is :sniffer.c
You should be using ETH_P_ALL instead of ETH_P_IP as the protocol. ETH_P_IP only listens for incoming IP packets.