rtfox-browser

Undetected Chrome browser driver with SOCKS5 proxy, captcha solving and multiprocessing support.

Based on

This project is a fork of undetected-chromedriver by @UltrafunkAmsterdam.

We took the core Chrome driver stealth patching logic as a base and extended it with:

• SOCKS5 proxy support with authentication
• Built-in captcha solving module with plugin API
• Multiprocessing isolation (per-worker profiles and binaries)
• On-the-fly proxy replacement without browser restart
• Structured logging via loguru
• Improved cleanup and shutdown handling

Original project is licensed under GPL-3.0 — this fork inherits the same license.

Features

• 🛡️ Bypasses CloudFlare / hCaptcha / Imperva detection out of the box
• 🔒 SOCKS5 / HTTP / HTTPS proxy support with authentication
• 🔄 On-the-fly proxy replacement via proxy_replacement() — no restart needed
• 🧩 Built-in captcha solving module (2 solvers included)
• ⚙️ Custom captcha solver API — share your own solvers
• 🚀 Multiprocessing support
• 🖥️ Cross-platform: Linux, macOS, Windows

Installation

pip install rtfox-browser

Quick start

import rtfox_browser as uc

driver = uc.Chrome()
driver.get("https://example.com")
driver.quit()

Proxy

SOCKS5 with authentication

driver = uc.Chrome(
    proxy={
        "host": "1.2.3.4",
        "port": 1080,
        "type": "socks5",
        "user": "username",
        "pass": "password",
    }
)

HTTP proxy (no auth)

driver = uc.Chrome(
    proxy={
        "host": "1.2.3.4",
        "port": 8080,
        "type": "http",
    }
)

Named keyword arguments (alternative style)

from rtfox_browser.proxy_types import ProxyType

driver = uc.Chrome(
    proxy_host="1.2.3.4",
    proxy_port=1080,
    proxy_type=ProxyType.SOCKS5,
    proxy_user="username",
    proxy_pass="password",
)

Proxy exceptions

from rtfox_browser.exceptions import (
    ProxyError,
    ProxyConnectionError,
    ProxyAuthError,
    ProxyTimeoutError,
    ProxyInvalidAddressError,
    ProxyConfigError,
)

try:
    driver = uc.Chrome(proxy={
        "host": "1.2.3.4",
        "port": 1080,
        "type": "socks5",
        "user": "username",
        "pass": "password",
    })
except ProxyConfigError:
    print("Invalid or incomplete proxy config")
except ProxyInvalidAddressError:
    print("Malformed host or port")
except ProxyAuthError:
    print("Wrong credentials")
except ProxyTimeoutError:
    print("Proxy timed out")
except ProxyConnectionError:
    print("Could not connect to proxy")
except ProxyError:
    print("General proxy failure")

On-the-fly proxy replacement

Replace the active proxy at any time without restarting Chrome. A local transparent tunnel is always running, so switching works even on sessions started without a proxy.

driver = uc.Chrome()

# Switch to a new proxy
driver.proxy_replacement({
    "host": "5.6.7.8",
    "port": 1080,
    "type": "socks5",
    "user": "alice",
    "pass": "secret",
})

# Switch to direct connection (no proxy)
driver.proxy_replacement(None)

# Named-argument style
driver.proxy_replacement(
    host="5.6.7.8",
    port=1080,
    proxy_type="socks5",
    user="alice",
    password="secret",
)

By default proxy_replacement() clears browser cache and cookies after switching so Chrome opens fresh connections through the new proxy. Pass clear_connections=False to skip this step.

Multiprocessing

Each worker gets its own isolated Chrome profile and chromedriver binary.

worker_id is optional — if omitted, a random UUID is assigned automatically. Pass it explicitly only if you want predictable names in logs or file paths.

from multiprocessing import Pool
import rtfox_browser as uc

def run_worker(worker_id):
    driver = uc.Chrome(worker_id=worker_id)
    driver.get("https://example.com")
    driver.quit()

with Pool(4) as pool:
    pool.map(run_worker, ["w1", "w2", "w3", "w4"])

Without explicit worker_id:

def run_worker(_):
    driver = uc.Chrome()  # worker_id auto-assigned as UUID
    driver.get("https://example.com")
    driver.quit()

with Pool(4) as pool:
    pool.map(run_worker, range(4))

Captcha solving

rtfox-browser includes a captcha module with 2 built-in solvers. Solvers are loaded automatically from a solvers/ directory in your working directory.

Setup

from rtfox_browser.captcha import CaptchaService

driver = uc.Chrome()
captcha = CaptchaService(api_key="YOUR_2CAPTCHA_KEY", driver=driver)

# Check available solvers
print(captcha.available())
# ['ebay_hcaptcha', 'aws_image']

Solve a captcha

driver.get("https://example.com")
captcha.ebay_hcaptcha()

Custom solvers directory

captcha = CaptchaService(
    api_key="YOUR_KEY",
    driver=driver,
    solvers_dir="/path/to/your/solvers",
)

Creating your own captcha solver

Drop a file into the solvers/ folder — it will be picked up automatically. No registration needed.

1. Create solvers/my_solver.py:

from rtfox_browser.captcha import BaseCaptchaSolver

class MySolver(BaseCaptchaSolver):
    name = "my_captcha"  # becomes the method name on CaptchaService

    def solve(self, **kwargs) -> bool:
        driver = self.driver      # Selenium WebDriver
        api_key = self.api_key    # 2captcha API key

        # your solving logic here
        ...
        return True  # True = solved, False = failed

2. Use it:

captcha = CaptchaService(api_key="KEY", driver=driver)
captcha.my_captcha()

3. Or register manually at runtime:

captcha.register(MySolver)
captcha.my_captcha()

BaseCaptchaSolver API

ProxyConfig reference

You can construct proxy config directly using ProxyConfig:

from rtfox_browser.proxy_types import ProxyConfig, ProxyType

# From a dict
config = ProxyConfig.from_dict({
    "host": "1.2.3.4",
    "port": 8080,
    "type": "socks5",
    "user": "alice",
    "pass": "secret",
})

# From named arguments
config = ProxyConfig.from_args(
    host="1.2.3.4",
    port=8080,
    proxy_type=ProxyType.SOCKS5,
    user="alice",
    password="secret",
)

# Pass directly to Chrome
driver = uc.Chrome(proxy=config)

# Or use for proxy_replacement
driver.proxy_replacement(config)

Supported proxy types: socks5, http, https.

Cross-platform support

Community

💬 Telegram: @rtf_labs_studio 🎥 YouTube: RTF Labs Studio

License

GPL-3.0 © rtf-labs-studio