From d28c738475bba6f2120c06cbb7bba13cf7b26792 Mon Sep 17 00:00:00 2001
From: jtricerolph <info@tricerolph.com>
Date: Fri, 10 Jul 2026 09:14:36 +0000
Subject: [PATCH] Block images via Chrome flag, not route interception; restore
 DataImpulse URL auth
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context.route() (request interception) breaks URL-embedded proxy auth in
Chromium — DataImpulse proactive CONNECT auth stops working when interception
is active. Replace route handler with --blink-settings=imagesEnabled=false
Chrome flag to block images without touching the interception layer.
Restore DataImpulse URL-embedded credentials (unchanged from before IPRoyal work).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 backend/services/proxy.py                     | 13 +++++--
 .../scraper_backends/playwright_hotel_page.py | 38 ++-----------------
 2 files changed, 14 insertions(+), 37 deletions(-)

diff --git a/backend/services/proxy.py b/backend/services/proxy.py
index 0874341..b179218 100644
--- a/backend/services/proxy.py
+++ b/backend/services/proxy.py
@@ -109,9 +109,16 @@ def playwright_proxy(cfg: dict, session_id: Optional[str] = None) -> Optional[di
         return None
     user, pwd = _build_auth(cfg, session_id)
     server = f"http://{cfg['host']}:{cfg['port']}"
-    # Both providers use separate fields — URL-embedded credentials stop being
-    # forwarded by Chromium when request interception (context.route) is active.
-    return {'server': server, 'username': user, 'password': pwd}
+    if _provider(cfg) == 'iproyal':
+        # IPRoyal requires separate fields — Chromium silently drops
+        # URL-embedded credentials for this provider.
+        return {'server': server, 'username': user, 'password': pwd}
+    from urllib.parse import quote
+    # DataImpulse: credentials in URL so Chromium sends Proxy-Authorization
+    # proactively on CONNECT (avoids a ~14s 407 round-trip).
+    return {
+        'server': f"http://{quote(user, safe='')}:{quote(pwd, safe='')}@{cfg['host']}:{cfg['port']}",
+    }
 
 
 def httpx_proxy(cfg: dict, session_id: Optional[str] = None):
diff --git a/backend/services/scraper_backends/playwright_hotel_page.py b/backend/services/scraper_backends/playwright_hotel_page.py
index 6cd649c..81f27e4 100644
--- a/backend/services/scraper_backends/playwright_hotel_page.py
+++ b/backend/services/scraper_backends/playwright_hotel_page.py
@@ -55,39 +55,6 @@ _VIEWPORTS = [
     {'width': 1600, 'height': 900},
 ]
 
-# Resource types to abort — we only need the DOM and JS execution.
-# Images, stylesheets, and fonts are served from cf.bstatic.com and account
-# for ~75% of bandwidth; aborting them saves ~1.5 GB per scrape run.
-_BLOCK_RESOURCE_TYPES = {'image', 'stylesheet', 'font', 'media'}
-
-# Pure tracking/analytics domains with no effect on DOM or JS prices rendering.
-_BLOCK_DOMAINS = {
-    'cdn.cookielaw.org',
-    'geolocation.onetrust.com',
-    'graph.facebook.com',
-    'platform-lookaside.fbsbx.com',
-    'lh3.googleusercontent.com',
-    'maps.googleapis.com',
-    'web-perf.booking.com',
-    'sink.gw.booking.com',
-    'otel-gw.booking.com',
-}
-
-
-async def _route_handler(route, request):
-    if request.resource_type in _BLOCK_RESOURCE_TYPES:
-        await route.abort()
-        return
-    try:
-        host = request.url.split('/')[2].split(':')[0]
-    except IndexError:
-        host = ''
-    if host in _BLOCK_DOMAINS:
-        await route.abort()
-        return
-    await route.continue_()
-
-
 # Injected into every new context to mask headless/webdriver signals.
 _STEALTH_SCRIPT = """
 Object.defineProperty(navigator, 'webdriver', {get: () => undefined});
@@ -261,6 +228,10 @@ class PlaywrightHotelPageBackend(ScraperBackend):
                     '--disable-blink-features=AutomationControlled',
                     '--disable-infobars',
                     '--disable-extensions',
+                    # Block image loading at the engine level — avoids ~75% of
+                    # proxy bandwidth (cf.bstatic.com CDN) without enabling
+                    # request interception, which breaks proxy auth in Chromium.
+                    '--blink-settings=imagesEnabled=false',
                 ],
             )
 
@@ -283,7 +254,6 @@ class PlaywrightHotelPageBackend(ScraperBackend):
                 **self._proxy_kwargs(session_id),
             )
             await self._context.add_init_script(_STEALTH_SCRIPT)
-            await self._context.route('**/*', _route_handler)
             self._requests_on_context = 0
             logger.debug(
                 f"Opened new browser context ua=…{ua[-30:]} viewport={viewport['width']}x{viewport['height']}"