Force requests to use IPv4 / IPv6

Question

How to force the requests library to use a specific internet protocol version for a get request? Or can this be achieved better with another method in Python? I

Answer 1

After reading the previous answer, I had to modify the code to force IPv4 instead of IPv6. Notice that I used socket.AF_INET instead of socket.AF_INET6, and self.sock.connect() has 2-item tuple argument.

I also needed to override the HTTPSConnection which is much different than HTTPConnection since requests wraps the httplib.HTTPSConnection to verify the certificate if the ssl module is available.

import socket
import ssl
try:
    from http.client import HTTPConnection
except ImportError:
    from httplib import HTTPConnection
from requests.packages.urllib3.connection import VerifiedHTTPSConnection

# HTTP
class MyHTTPConnection(HTTPConnection):
    def connect(self):
        self.sock = socket.socket(socket.AF_INET)
        self.sock.connect((self.host, self.port))
        if self._tunnel_host:
            self._tunnel()

requests.packages.urllib3.connectionpool.HTTPConnection = MyHTTPConnection
requests.packages.urllib3.connectionpool.HTTPConnectionPool.ConnectionCls = MyHTTPConnection

# HTTPS
class MyHTTPSConnection(VerifiedHTTPSConnection):
    def connect(self):
        self.sock = socket.socket(socket.AF_INET)
        self.sock.connect((self.host, self.port))
        if self._tunnel_host:
            self._tunnel()
        self.sock = ssl.wrap_socket(self.sock, self.key_file, self.cert_file)

requests.packages.urllib3.connectionpool.HTTPSConnection = MyHTTPSConnection
requests.packages.urllib3.connectionpool.VerifiedHTTPSConnection = MyHTTPSConnection
requests.packages.urllib3.connectionpool.HTTPSConnectionPool.ConnectionCls = MyHTTPSConnection