diff --git a/trunk/src/kernel/srs_kernel_flv.cpp b/trunk/src/kernel/srs_kernel_flv.cpp
index d9432ceb5..64642514b 100644
--- a/trunk/src/kernel/srs_kernel_flv.cpp
+++ b/trunk/src/kernel/srs_kernel_flv.cpp
@@ -284,6 +284,11 @@ int SrsSharedPtrMessage::count()
 
 bool SrsSharedPtrMessage::check(int stream_id)
 {
+    // Ignore error when message has no payload.
+    if (!ptr) {
+        return true;
+    }
+
     // we donot use the complex basic header,
     // ensure the basic header is 1bytes.
     if (ptr->header.perfer_cid < 2) {
diff --git a/trunk/src/utest/srs_utest_protostack.cpp b/trunk/src/utest/srs_utest_protostack.cpp
index 63c9bbf19..e2323add2 100644
--- a/trunk/src/utest/srs_utest_protostack.cpp
+++ b/trunk/src/utest/srs_utest_protostack.cpp
@@ -183,5 +183,64 @@ VOID TEST(ProtoStackTest, SendZeroMessages)
         SrsProtocol p(&io);
         HELPER_EXPECT_SUCCESS(p.send_and_free_message(NULL, 0));
     }
+
+    if (true) {
+        MockBufferIO io;
+        SrsProtocol p(&io);
+        SrsSharedPtrMessage* msg = new SrsSharedPtrMessage();
+        HELPER_EXPECT_SUCCESS(p.send_and_free_message(msg, 1));
+    }
+
+    if (true) {
+        MockBufferIO io;
+        SrsProtocol p(&io);
+        SrsSharedPtrMessage* msgs[1024];
+        for (int i = 0; i < 1024; i++) {
+            msgs[i] = new SrsSharedPtrMessage();
+        }
+        HELPER_EXPECT_SUCCESS(p.send_and_free_messages(msgs, 1024, 0));
+    }
+}
+
+VOID TEST(ProtoStackTest, HugeMessages)
+{
+    srs_error_t err;
+    if (true) {
+        MockBufferIO io;
+        SrsProtocol p(&io);
+
+        SrsCommonMessage pkt;
+        pkt.header.initialize_audio(200, 1000, 1);
+        pkt.create_payload(256);
+        pkt.size = 256;
+
+        SrsSharedPtrMessage* msg = new SrsSharedPtrMessage();
+        msg->create(&pkt);
+
+        HELPER_EXPECT_SUCCESS(p.send_and_free_message(msg, 1));
+        EXPECT_EQ(269, io.out_buffer.length());
+    }
+
+    if (true) {
+        MockBufferIO io;
+        SrsProtocol p(&io);
+
+        SrsCommonMessage pkt;
+        pkt.header.initialize_audio(200, 1000, 1);
+        pkt.create_payload(256);
+        pkt.size = 256;
+
+        SrsSharedPtrMessage* msg = new SrsSharedPtrMessage();
+        msg->create(&pkt);
+        SrsAutoFree(SrsSharedPtrMessage, msg);
+
+        SrsSharedPtrMessage* msgs[1024];
+        for (int i = 0; i < 1024; i++) {
+            msgs[i] = msg->copy();
+        }
+
+        HELPER_EXPECT_SUCCESS(p.send_and_free_messages(msgs, 1024, 1));
+        EXPECT_EQ(269*1024, io.out_buffer.length());
+    }
 }