# Target can be imported before monkey patching
from urllib.request import urlopen, build_opener, ProxyHandler


# Import extproxy, auto apply monkey patching by `extproxy.patch_items`
import extproxy


# Use origin HTTP proxy
proxy = "http://127.0.0.1:8080"


# Use HTTPS proxy, use `set_https_proxy` to custom proxy's SSL verify mode
import ssl
proxy = "https://127.0.0.1:8443"

cafile = "cafile path"
set_https_proxy(proxy, check_hostname=False, cafile=cafile)

context_settings = {
    "protocol": ssl.PROTOCOL_TLSv1_2,
    "cert_reqs": ssl.CERT_REQUIRED,  #
    "check_hostname": True,          #
    "cafile": "cafile path",         #
    "capath": "cafiles dir path",    #
    "cadata": b"ca data"             # Uesd to server auth
    "certfile": "certfile path",  #
    "keyfile": "keyfile path",    # Uesd to client auth
}
context = ssl._create_unverified_context(**context_settings)
 ...  # More custom settings
set_https_proxy(proxy, context=context)


# Use SOCKS proxy, `socks` can be: socks, socks4, socks4a, socks5, socks5h
# SOCKS4 does not support remote resolving, but SOCKS4a/5 supported
# 'socks' means SOCKS5, 'socks5h' means do not use remote resolving
proxy = "socks://127.0.0.1:1080"


# Set proxy via system/python environment variables
import os
os.environ["HTTP_PROXY"] = proxy
os.environ["HTTPS_PROXY"] = proxy
print(urlopen("https://httpbin.org/ip").read().decode())


# Set proxy via ProxyHandler
opener = build_opener(ProxyHandler({
    "http": proxy,
    "https": proxy
}))
print(opener.open("https://httpbin.org/ip").read().decode())


# Restore monkey patch, then HTTPS, SOCKS proxy use can not continue working
extproxy.restore_items()