Add browser headless mode for Linux

Dockerfile

@@ -31,12 +31,11 @@ RUN pip install -r requirements.txt \
 USER flaresolverr
 
 COPY src .
-COPY docker/entrypoint.sh .
 COPY package.json ../
 
 EXPOSE 8191
 
-CMD ["/bin/sh", "/app/entrypoint.sh"]
+CMD ["/usr/local/bin/python", "-u", "/app/flaresolverr.py"]
 
 # docker build -t flaresolverr:3.0.0.beta1 .
 # docker run -p 8191:8191 flaresolverr:3.0.0.beta1

docker/entrypoint.sh

@@ -1,6 +0,0 @@
-#!/bin/sh -
-
-export DISPLAY=99
-#echo "Listening on :$DISPLAY"
-
-xvfb-run -s "-screen 0 1920x1080x24" python -u /app/flaresolverr.py

requirements.txt

@@ -3,3 +3,4 @@ waitress==2.1.2
 selenium==4.4.3
 undetected-chromedriver==3.1.5.post4
 func-timeout==4.3.5
+xvfbwrapper==0.2.9

src/flaresolverr.py

@@ -63,6 +63,7 @@ if __name__ == "__main__":
     # validate configuration
     log_level = os.environ.get('LOG_LEVEL', 'info').upper()
     log_html = utils.get_config_log_html()
+    headless = utils.get_config_headless()
     server_host = os.environ.get('HOST', '0.0.0.0')
     server_port = int(os.environ.get('PORT', 8191))
 

src/utils.py

@@ -8,12 +8,17 @@ import undetected_chromedriver as uc
 FLARESOLVERR_VERSION = None
 CHROME_MAJOR_VERSION = None
 USER_AGENT = None
+XVFB_DISPLAY = None
 
 
 def get_config_log_html() -> bool:
     return os.environ.get('LOG_HTML', 'false').lower() == 'true'
 
 
+def get_config_headless() -> bool:
+    return os.environ.get('HEADLESS', 'true').lower() == 'true'
+
+
 def get_flaresolverr_version() -> str:
     global FLARESOLVERR_VERSION
     if FLARESOLVERR_VERSION is not None:
@@ -32,11 +37,15 @@ def get_webdriver() -> WebDriver:
     options = uc.ChromeOptions()
     options.add_argument('--no-sandbox')
     options.add_argument('--window-size=1920,1080')
-    # todo: this param shows a warning in chrome headfull
+    # todo: this param shows a warning in chrome head-full
     options.add_argument('--disable-setuid-sandbox')
     options.add_argument('--disable-dev-shm-usage')
-    # note: headless mode is detected
-    # options.headless = True
+
+    # note: headless mode is detected (options.headless = True)
+    # we launch the browser in head-full mode with the window hidden
+    if get_config_headless():
+        if os.name != 'nt':  # not in windows
+            start_xvfb_display()
 
     # if we are inside the Docker container, we avoid downloading the driver
     driver_exe_path = None
@@ -93,6 +102,14 @@ def get_user_agent(driver=None) -> str:
             driver.quit()
 
 
+def start_xvfb_display():
+    global XVFB_DISPLAY
+    if XVFB_DISPLAY is None:
+        from xvfbwrapper import Xvfb
+        XVFB_DISPLAY = Xvfb()
+        XVFB_DISPLAY.start()
+
+
 def object_to_dict(_object):
     json_dict = json.loads(json.dumps(_object, default=lambda o: o.__dict__))
     # remove hidden fields