diff --git a/logic_linkkf.py b/logic_linkkf.py
index 5c45935..aa175fb 100644
--- a/logic_linkkf.py
+++ b/logic_linkkf.py
@@ -255,6 +255,7 @@ class LogicLinkkf(object):
         except Exception as e:
             logger.error("Exception:%s", e)
             logger.error(traceback.format_exc())
+            return ""
 
     @staticmethod
     def get_html_requests(url, cached=False, referer=None, reset_session=False):
@@ -463,25 +464,36 @@ class LogicLinkkf(object):
         #     sess=LogicLinkkf.session,
         #     delay=10,
         # )
-        # scraper = cloudscraper.create_scraper(sess=re_sess)
-        scraper = cloudscraper.create_scraper(
-            # debug=True,
-            delay=10,
-            sess=LogicLinkkf.session,
-            browser={
-                "custom": "linkkf",
-            },
-        )
+        last_exception = None
+        for attempt in range(3):
+            try:
+                if attempt > 0:
+                    LogicLinkkf._reset_http_state()
+                    LogicLinkkf.session = requests.Session()
+                    headers["User-Agent"] = random.choice(user_agents_list)
 
-        # print(scraper.get(url, headers=LogicLinkkf.headers).content)
-        # print(scraper.get(url).content)
-        # return scraper.get(url, headers=LogicLinkkf.headers).content
-        # logger.debug(LogicLinkkf.headers)
-        return scraper.get(
-            url,
-            headers=headers,
-            timeout=10,
-        ).content.decode("utf8", errors="replace")
+                scraper = cloudscraper.create_scraper(
+                    delay=10,
+                    sess=LogicLinkkf.session,
+                    browser={
+                        "custom": "linkkf",
+                    },
+                )
+
+                return scraper.get(
+                    url,
+                    headers=headers,
+                    timeout=10,
+                ).content.decode("utf8", errors="replace")
+            except requests.exceptions.RequestException as e:
+                last_exception = e
+                if attempt < 2:
+                    time.sleep(0.4 * (attempt + 1))
+                continue
+
+        if last_exception is not None:
+            raise last_exception
+        return ""
 
     @staticmethod
     def get_video_url_from_url(url, url2):
@@ -1274,6 +1286,12 @@ class LogicLinkkf(object):
 
     @staticmethod
     def _extract_stream_config(player_html, base_url):
+        if player_html in [None, b"", ""]:
+            return None, None
+        if isinstance(player_html, bytes):
+            player_html = player_html.decode("utf8", errors="replace")
+        player_html = str(player_html)
+
         video_url = None
         vtt_url = None
 
diff --git a/mod_basic.py b/mod_basic.py
index b4a2006..2fd97cd 100644
--- a/mod_basic.py
+++ b/mod_basic.py
@@ -46,6 +46,20 @@ class ModuleBasic(PluginModuleBase):
             + urllib.parse.urlsplit(referer or P.ModelSetting.get("linkkf_url")).netloc,
         }
 
+    @staticmethod
+    def _is_optional_proxy_target(target):
+        lower = str(target or "").lower()
+        optional_exts = [
+            ".vtt",
+            ".srt",
+            ".jpg",
+            ".jpeg",
+            ".png",
+            ".webp",
+            ".gif",
+        ]
+        return any(lower.endswith(ext) for ext in optional_exts)
+
     @staticmethod
     def _rewrite_m3u8(content, target_url, referer):
         def replace_uri_attr(line):
@@ -262,10 +276,25 @@ class ModuleBasic(PluginModuleBase):
                 headers = self._get_proxy_headers(referer)
                 if req.headers.get("Range") is not None:
                     headers["Range"] = req.headers.get("Range")
-                upstream = requests.get(target, headers=headers, stream=True, timeout=30)
+                upstream = None
+                last_exception = None
+                for attempt in range(3):
+                    try:
+                        upstream = requests.get(target, headers=headers, stream=True, timeout=30)
+                        break
+                    except requests.exceptions.RequestException as e:
+                        last_exception = e
+                        if attempt < 2:
+                            continue
+                if upstream is None:
+                    if self._is_optional_proxy_target(target):
+                        return Response(status=204)
+                    raise last_exception
                 content_type = upstream.headers.get("content-type", "")
 
                 if upstream.status_code >= 400:
+                    if self._is_optional_proxy_target(target):
+                        return Response(status=204)
                     return Response(
                         upstream.content,
                         status=upstream.status_code,