diff --git a/mockup_servers/socket_server.py b/mockup_servers/socket_server.py
index b287da713..586c383c4 100644
--- a/mockup_servers/socket_server.py
+++ b/mockup_servers/socket_server.py
@@ -8,17 +8,21 @@ import websockets
 async def hello(websocket, path):
     print(f"connection done {path}")
 
+    keep_alive_bytes =  bytes([8, 1, 18, 28, 10, 3, 80, 85, 84, 18, 19, 47, 97, 112, 105, 47, 118, 49, 47, 113, 117, 101, 117, 101, 47, 101, 109, 112, 116, 121, 32, 99])
     # created by executing in js:
     # protomessage = new textsecure.protobuf.WebSocketMessage({type: textsecure.protobuf.WebSocketMessage.Type.REQUEST, request: {id:99, verb:'PUT', path:'/api/v1/queue/empty', body:null }})
-    # new Uint8Array(encoded.encode().toArrayBuffer())
-
+    # new Uint8Array(protomessage.encode().toArrayBuffer())
+    message =           bytes([8, 1, 18, 53, 10, 3, 80, 85, 84, 18, 15, 47, 97, 112, 105, 47, 118, 49, 47, 109, 101, 115, 115, 97, 103, 101, 26, 27, 8, 1, 18, 15, 109, 121, 115, 111, 117, 114, 99, 101, 97, 100, 100, 114, 101, 115, 115, 56, 1, 40, 166, 198, 208, 221, 5, 32, 99])
+    # created by executing in js:
+    # env = textsecure.protobuf.Envelope.encode({ type: textsecure.protobuf.Envelope.Type.CIPHERTEXT, source: "mysourceaddress", sourceDevice: 1, content: null, timestamp: Math.round((new Date()).getTime() / 1000) })
+    # protomessage = new textsecure.protobuf.WebSocketMessage({type: textsecure.protobuf.WebSocketMessage.Type.REQUEST, request: {id:99, verb:'PUT', path:'/api/v1/message', body:env }})
+    # new Uint8Array(protomessage.encode().toArrayBuffer())
     signature = websocket.request_headers.get('signature')
 
     if not signature:
         print("no signature provided")
 
-    keep_alive_bytes = bytes([8, 1, 18, 28, 10, 3, 80, 85, 84, 18, 19, 47, 97, 112, 105, 47, 118, 49, 47, 113, 117, 101, 117, 101, 47, 101, 109, 112, 116, 121, 32, 99])
-    my_bytes = keep_alive_bytes
+    my_bytes = message
     counter = 0
     while(True):
         print("sending keepalive")