diff --git a/server.py b/server.py
index 610f2a1..63d8ba5 100755
--- a/server.py
+++ b/server.py
@@ -110,19 +110,28 @@ def tt_hh(addr, data):
     # 从缓存中匹配数据并重发
     # 仅有新终端上线时才重发
     if ccid in cache:
-        msgs = cache[ccid]
+        msgs = cache[ccid][:] # 浅拷贝
+        sccid=msgs[0][7 + offs : 11 + offs].decode()
+        print("有",len(msgs),"包缓存数据待发，源ccid：",sccid)
         for i in range(len(msgs)):
             try:
                 # 按缓存先后顺序发送
                 addr.send(msgs[i])
+                cache[ccid].pop(0)
+                print("第",i+1,"包缓存数据发送完成。")
             except:
                 # 异常时退出循环，不用再尝试发送后续msgs
                 # 退出前清空已发送成功的缓存数据
                 # del方法会改变list大小
-                while i:
-                    cache[ccid].pop(0)
-                    i = i - 1
+                # while i:
+                #     cache[ccid].pop(0)
+                #     i = i - 1
+                print("第",i+1,"包发送失败，停止尝试")
                 break
+        if cache[ccid] == []:
+            print("缓存数据发送完成，源ccid：",sccid)
+            del cache[ccid]
+        save_cache(cache)
 
     return 0
 
@@ -206,7 +215,7 @@ def tt_decode(addr, data):
 
 class MyServer(socketserver.BaseRequestHandler):
     def handle(self):  # 回调
-        print("终端已上线:", self.client_address)
+        print("终端", self.client_address,"已上线，等待上报心跳。")
         conn = self.request
         # print(type(conn),conn.fd)