feat(browser): add CDP URL configuration support

Add support for direct CDP URL configuration in BrowserConfig and ManagedBrowser classes. This allows connecting to remote browser instances using custom CDP endpoints instead of always launching a local browser.

- Added cdp_url parameter to BrowserConfig
- Added cdp_url support in ManagedBrowser.start() method
- Updated documentation for new parameters

crawl4ai/async_configs.py

@@ -32,6 +32,7 @@ class BrowserConfig:
                          Default: True.
         use_managed_browser (bool): Launch the browser using a managed approach (e.g., via CDP), allowing
                                     advanced manipulation. Default: False.
+        cdp_url (str): URL for the Chrome DevTools Protocol (CDP) endpoint. Default: "ws://localhost:9222/devtools/browser/".
         debugging_port (int): Port for the browser debugging protocol. Default: 9222.
         use_persistent_context (bool): Use a persistent browser context (like a persistent profile).
                                        Automatically sets use_managed_browser=True. Default: False.
@@ -80,6 +81,7 @@ class BrowserConfig:
         browser_type: str = "chromium",
         headless: bool = True,
         use_managed_browser: bool = False,
+        cdp_url: str = None,
         use_persistent_context: bool = False,
         user_data_dir: str = None,
         chrome_channel: str = "chromium",
@@ -107,10 +109,12 @@ class BrowserConfig:
         light_mode: bool = False,
         extra_args: list = None,
         debugging_port: int = 9222,
+        host: str = "localhost",
     ):
         self.browser_type = browser_type
         self.headless = headless
         self.use_managed_browser = use_managed_browser
+        self.cdp_url = cdp_url
         self.use_persistent_context = use_persistent_context
         self.user_data_dir = user_data_dir
         self.chrome_channel = chrome_channel or self.browser_type or "chromium"
@@ -162,6 +166,7 @@ class BrowserConfig:
             browser_type=kwargs.get("browser_type", "chromium"),
             headless=kwargs.get("headless", True),
             use_managed_browser=kwargs.get("use_managed_browser", False),
+            cdp_url=kwargs.get("cdp_url"),
             use_persistent_context=kwargs.get("use_persistent_context", False),
             user_data_dir=kwargs.get("user_data_dir"),
             chrome_channel=kwargs.get("chrome_channel", "chromium"),
@@ -194,6 +199,7 @@ class BrowserConfig:
             "browser_type": self.browser_type,
             "headless": self.headless,
             "use_managed_browser": self.use_managed_browser,
+            "cdp_url": self.cdp_url,
             "use_persistent_context": self.use_persistent_context,
             "user_data_dir": self.user_data_dir,
             "chrome_channel": self.chrome_channel,

crawl4ai/async_crawler_strategy.py

@@ -102,6 +102,7 @@ class ManagedBrowser:
         logger=None,
         host: str = "localhost",
         debugging_port: int = 9222,
+        cdp_url: Optional[str] = None, 
     ):
         """
         Initialize the ManagedBrowser instance.
@@ -116,6 +117,7 @@ class ManagedBrowser:
             logger (logging.Logger): Logger instance for logging messages. Default: None.
             host (str): Host for debugging the browser. Default: "localhost".
             debugging_port (int): Port for debugging the browser. Default: 9222.
+            cdp_url (str or None): CDP URL to connect to the browser. Default: None.
         """
         self.browser_type = browser_type
         self.user_data_dir = user_data_dir
@@ -129,9 +131,16 @@ class ManagedBrowser:
 
     async def start(self) -> str:
         """
-        Starts the browser process and returns the CDP endpoint URL.
+        Starts the browser process or returns CDP endpoint URL.
-        If user_data_dir is not provided, creates a temporary directory.
+        If cdp_url is provided, returns it directly.
+        If user_data_dir is not provided for local browser, creates a temporary directory.
+        
+        Returns:
+            str: CDP endpoint URL
         """
+        # If CDP URL provided, just return it
+        if self.cdp_url:
+            return self.cdp_url
 
         # Create temp dir if needed
         if not self.user_data_dir: