diff --git a/server.py b/server.py
index 6cef7bb..ac0ad4e 100755
--- a/server.py
+++ b/server.py
@@ -51,11 +51,15 @@ _{datetime.datetime.now()}_
 {content}""",
         "token": "tt"
     })
-    res = res.json()
-    if res["success"]:
-        return None
+    try:
+        res = res.json()
+    except:
+        return
     else:
-        return res["message"]
+        if res["success"]:
+            return None
+        else:
+            return res["message"]
 
 
 cache = defaultdict(list)
@@ -173,6 +177,7 @@ def tt_hh(addr, data):
     update_pairs(addr, ccid)
     # 组帧再返回
     msg = bytearray(data[:])
+    msg[:5] = b"$TTMX"
     val = "%04x" % int(time.time())
     tmp=[]
     for i in range(0,len(val),2):