fix(native): advance anchor data sequence after SYN

product-source/hololake-platform/guanghu-os/scripts/qemu-native-net-peer.py

@@ -201,6 +201,7 @@ def main() -> None:
     recovery_verified = False
     anchor_syn_sent = False
     anchor_syn_ack_verified = False
+    anchor_server_sequence = None
     anchor_get_sent = False
     anchor_http_verified = False
 
@@ -220,6 +221,7 @@ def main() -> None:
                 server_sequence, acknowledgement, payload = verify_anchor_tcp(frame, 0x12)
                 assert acknowledgement == ANCHOR_CLIENT_SEQUENCE + 1
                 assert payload == b""
+                anchor_server_sequence = server_sequence
                 anchor_syn_ack_verified = True
                 request = (
                     b"GET /v1/anchor HTTP/1.1\r\n"
@@ -238,7 +240,9 @@ def main() -> None:
                 )
                 anchor_get_sent = True
                 continue
-            _, acknowledgement, payload = verify_anchor_tcp(frame, 0x19)
+            server_sequence, acknowledgement, payload = verify_anchor_tcp(frame, 0x19)
+            assert anchor_server_sequence is not None
+            assert server_sequence == anchor_server_sequence + 1
             assert acknowledgement > ANCHOR_CLIENT_SEQUENCE + 1
             header, body = payload.split(b"\r\n\r\n", 1)
             assert b"HTTP/1.1 200 OK" in header