diff --git a/out_service/cd.py b/out_service/cd.py
index 567eaab4..19d18d41 100644
--- a/out_service/cd.py
+++ b/out_service/cd.py
@@ -4,14 +4,21 @@ from urllib.parse import urlparse, parse_qs
 import socket
 import threading
 
-sc_all = {
-    "192.168.1.220_6000": None,
-    "192.168.1.235_6000": None,
-    "192.168.1.225_6000": None,
-    "192.168.1.230_6000": None,
-}
+sc_all = {}
+sc_locks = {}
+registry_lock = threading.Lock()
 
-sc_locks = {addr: threading.Lock() for addr in sc_all}
+
+def get_lock(addr):
+    lock = sc_locks.get(addr)
+    if lock is None:
+        with registry_lock:
+            lock = sc_locks.get(addr)
+            if lock is None:
+                lock = threading.Lock()
+                sc_locks[addr] = lock
+                sc_all.setdefault(addr, None)
+    return lock
 
 def get_checksum(body_msg):
     return sum(body_msg) & 0xFF
@@ -106,13 +113,10 @@ class JSONRequestHandler(BaseHTTPRequestHandler):
         host = query_params.get('host', ['127.0.0.1'])[0]
         port = query_params.get('port', ['6000'])[0]
         addr = f'{host}_{port}'
-
-        if addr not in sc_all:
-            self.error(f'{addr} 未找到')
-            return
+        lock = get_lock(addr)
 
         def request_once():
-            with sc_locks[addr]:
+            with lock:
                 sc = sc_all[addr]
                 try:
                     if sc is None: