diff --git a/webrtc/SrtpSession.cpp b/webrtc/SrtpSession.cpp
index 1f0778e2..408769fc 100644
--- a/webrtc/SrtpSession.cpp
+++ b/webrtc/SrtpSession.cpp
@@ -204,11 +204,16 @@ SrtpSession::SrtpSession(Type type, CryptoSuite cryptoSuite, uint8_t *key, size_
     policy.key = key;
     // Required for sending RTP retransmission without RTX.
     policy.allow_repeat_tx = 1;
+#if 0
     if (type == Type::OUTBOUND) {
         policy.window_size = 0x8000 - 1;
     } else {
         policy.window_size = 1024;
     }
+#else
+    // TODO 关闭防重放攻击
+    policy.window_size = 0x8000 - 1;
+#endif
     policy.next = nullptr;
 
     // Set the SRTP session.