feat(browsers): add new feature to enable DNS-over-HTTP to prevent DNS leaks

scrapling/engines/_browsers/_base.py

@@ -455,6 +455,13 @@ class BaseSessionMixin:
             if config.extra_flags or extra_flags:
                 flags = list(set(tuple(flags) + tuple(config.extra_flags or extra_flags or ())))
 
+            if config.dns_over_https:
+                doh_flag = "--dns-over-https-templates=https://cloudflare-dns.com/dns-query"
+                if isinstance(flags, list):
+                    flags.append(doh_flag)
+                else:
+                    flags = list(flags) + [doh_flag]
+
             self._browser_options.update(
                 {
                     "args": flags,

scrapling/engines/_browsers/_types.py

@@ -93,6 +93,7 @@ class PlaywrightSession(TypedDict, total=False):
     retry_delay: int | float
     capture_xhr: str | None
     executable_path: Optional[str]
+    dns_over_https: bool
 
 
 class PlaywrightFetchParams(TypedDict, total=False):

scrapling/engines/_browsers/_validators.py

@@ -90,6 +90,7 @@ class PlaywrightConfig(Struct, kw_only=True, frozen=False, weakref=True):
     retry_delay: Seconds = 1
     capture_xhr: str | None = None
     executable_path: Optional[str] = None
+    dns_over_https: bool = False
 
     def __post_init__(self):  # pragma: no cover
         """Custom validation after msgspec validation"""