更新

backend/rpa_engine/douyin_im/frontier.py

@@ -8,7 +8,7 @@ from urllib.parse import unquote
 import requests
 
 from .auth import DouyinAuth
-from .dy_util import generate_a_bogus, generate_msToken, generate_webid, splice_url
+from .dy_util import DEFAULT_USER_AGENT, generate_a_bogus, generate_msToken, generate_webid, splice_url
 from .session import DouyinImSession, is_frontier_ws_url
 
 logger = logging.getLogger("douyin_im.frontier")
@@ -42,6 +42,7 @@ def fetch_device_id(session: DouyinImSession) -> str:
         session.cookie_header(),
         session.web_protect_str,
         session.keys_str,
+        user_agent=session.user_agent or DEFAULT_USER_AGENT,
     )
     url = "https://www.douyin.com/aweme/v1/web/query/user"
     headers = {
@@ -134,12 +135,31 @@ def ensure_frontier_ws(session: DouyinImSession) -> Optional[str]:
             logger.info("Using captured real frontier WS URL (with sdk_cert)")
             return url
 
+    # Only fpid=9 is Douyin private messaging.  Other Frontier products (for
+    # example fpid=971 opened by the generic /chat page shell) also handshake
+    # successfully but never carry this account's IM push stream.
+    for url in session.ws_urls:
+        if (
+            is_frontier_ws_url(url)
+            and "zijieapi.com" in url
+            and "access_key=" in url
+            and re.search(r"[?&]fpid=9(?:&|$)", url)
+            and _ws_device_matches_session(session, url)
+        ):
+            session.ws_urls = [url]
+            logger.info("Using captured browser frontier WebSocket URL")
+            return url
+
     for url in session.ws_urls:
         if is_frontier_ws_url(url) and _ws_token_looks_encoded(url):
             session.ws_urls = [url]
             logger.info("Using captured frontier WS URL")
             return url
 
+    # frontier 按 device_id 寻址推送，它不是账号 UID：抖音 query/user 返回的
+    # id 才是本浏览器的设备注册号（my_uid 走 DouyinAuth，两者不能互换）。
+    # 用 my_uid 拼出来的地址握手同样成功，但订阅的是另一个地址，
+    # 于是长连接一直是「连上但收不到任何私信」。
     device_id = resolve_frontier_device_id(session)
     if not device_id:
         session.ws_urls = []