So this started on a thread on reddit before, but I think this is going to be a better place to actually get help.
So I'm running on Debian Sid with python 3.6 and it works for everything except this site (of course it's the one I WANT to record everything on).
I'm running it in as insecure a method as I can seem to figure out:
$ mitmproxy -a test.flows --insecure --ssl-version-server all --ssl-version-client all --ciphers-server ALL --ciphers-client ALL -p 12345
Here's the website: https://techinfo.toyota.com/
And according to Qualys, it only supports: https://www.ssllabs.com/ssltest/analyze.html?d=techinfo.toyota.com
Cipher Suites (sorted by strength as the server has no preference; deprecated and SSL 2 suites at the end)
TLS_RSA_WITH_DES_CBC_SHA (0x9) WEAK 56
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa) 112
TLS_RSA_WITH_RC4_128_MD5 (0x4) INSECURE 128
TLS_RSA_WITH_RC4_128_SHA (0x5) INSECURE 128