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mitmproxy:tldr:9bcab

mitmproxy: Export the logs with SSL/TLS master keys to external programs (wireshark, etc.).
$ SSLKEYLOGFILE="${filename}" mitmproxy
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This command is used to set the SSLKEYLOGFILE environment variable to a specific filename. The SSLKEYLOGFILE variable is used to specify the location where the decrypted SSL/TLS session keys should be written.

In this case, the command sets the SSLKEYLOGFILE variable to the value of "${filename}". The value inside the double quotes represents a variable, which is likely defined elsewhere in the script or command-line arguments. It could be a specific filename or a placeholder for a dynamically generated filename.

After setting the SSLKEYLOGFILE variable, the command "mitmproxy" starts the mitmproxy tool. mitmproxy is a powerful proxy server that allows you to intercept, inspect, and modify HTTP/HTTPS traffic between your device and the target server. The SSLKEYLOGFILE variable is used by mitmproxy to log the decrypted SSL/TLS session keys for the intercepted traffic. These logs can then be used for debugging purposes or to decrypt the encrypted traffic outside of the mitmproxy tool.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.
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