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I am willing to use MitmProxy to intercept https traffic in my computer. I followed the installation document here in Ubuntu. After complete, I try to run "mitmproxy" in Terminal and got this error.

Error starting proxy server: error(98, 'Address already in use')

I tried to check if some process is using port 80 but not found.

Andiana
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1 Answers1

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mitmproxy defaults to port 8080, so this looks like you already have an application running on port 8080.

Maximilian Hils
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