Error in newer version of python

[blul1ghtz]

Don't know why the owner isn't maintaining this masterpiece as its a one of a kind but whatever.
New versions of python require you to replace "ctx.set_npn_protocols(["h2", "http/1.1"])" with "ctx.set_alpn_protocols(["h2", "http/1.1"])".
Also can somebody explain how in the living f### to post actual data like {"username":"user","password":"pass"}?
edit: i just realised this is super underdeveloped if anybody got a REAL timeless timing attack ill pay 10usd for it