Fix RemoteBuiltinEndpointHonoring blackbox test (#3787) (#3795)

* Refs #19358. Only account for WLP heartbeats and acknacks.

Signed-off-by: Miguel Company <MiguelCompany@eprosima.com>

* Refs #19358. Change test expectations.

Signed-off-by: Miguel Company <MiguelCompany@eprosima.com>

* Refs #19358. Rename counters.

Signed-off-by: Miguel Company <MiguelCompany@eprosima.com>

* Refs #19358. Whitelist localhost to ensure only the two test participants communicate.

Signed-off-by: Miguel Company <MiguelCompany@eprosima.com>

---------

Signed-off-by: Miguel Company <MiguelCompany@eprosima.com>
(cherry picked from commit d27ad9d)

Co-authored-by: Miguel Company <miguelcompany@eprosima.com>

test/blackbox/common/BlackboxTestsDiscovery.cpp

@@ -1568,36 +1568,76 @@ TEST(Discovery, RemoteBuiltinEndpointHonoring)
     auto reader_test_transport = std::make_shared<test_UDPv4TransportDescriptor>();
     auto writer_test_transport = std::make_shared<test_UDPv4TransportDescriptor>();
 
-    uint32_t num_reader_heartbeat = 0;
-    uint32_t num_reader_acknack = 0;
+    uint32_t num_wlp_reader_heartbeat = 0;
+    uint32_t num_wlp_reader_acknack = 0;
 
-    reader_test_transport->drop_heartbeat_messages_filter_ = [&num_reader_heartbeat](CDRMessage_t&)
+    reader_test_transport->drop_heartbeat_messages_filter_ = [&num_wlp_reader_heartbeat](CDRMessage_t& msg)
             {
-                num_reader_heartbeat++;
+                auto old_pos = msg.pos;
+                msg.pos += 4;
+                eprosima::fastrtps::rtps::EntityId_t writer_entity_id;
+                eprosima::fastrtps::rtps::CDRMessage::readEntityId(&msg, &writer_entity_id);
+                msg.pos = old_pos;
+
+                if (eprosima::fastrtps::rtps::c_EntityId_WriterLiveliness == writer_entity_id)
+                {
+                    num_wlp_reader_heartbeat++;
+                }
                 return false;
             };
 
-    reader_test_transport->drop_ack_nack_messages_filter_ = [&num_reader_acknack](CDRMessage_t&)
+    reader_test_transport->drop_ack_nack_messages_filter_ = [&num_wlp_reader_acknack](CDRMessage_t& msg)
             {
-                num_reader_acknack++;
+                auto old_pos = msg.pos;
+                msg.pos += 4;
+                eprosima::fastrtps::rtps::EntityId_t writer_entity_id;
+                eprosima::fastrtps::rtps::CDRMessage::readEntityId(&msg, &writer_entity_id);
+                msg.pos = old_pos;
+
+                if (eprosima::fastrtps::rtps::c_EntityId_WriterLiveliness == writer_entity_id)
+                {
+                    num_wlp_reader_acknack++;
+                }
                 return false;
             };
 
-    uint32_t num_writer_heartbeat = 0;
-    uint32_t num_writer_acknack = 0;
+    reader_test_transport->interfaceWhiteList.push_back("127.0.0.1");
+
+    uint32_t num_wlp_writer_heartbeat = 0;
+    uint32_t num_wlp_writer_acknack = 0;
 
-    writer_test_transport->drop_heartbeat_messages_filter_ = [&num_writer_heartbeat](CDRMessage_t&)
+    writer_test_transport->drop_heartbeat_messages_filter_ = [&num_wlp_writer_heartbeat](CDRMessage_t& msg)
             {
-                num_writer_heartbeat++;
+                auto old_pos = msg.pos;
+                msg.pos += 4;
+                eprosima::fastrtps::rtps::EntityId_t writer_entity_id;
+                eprosima::fastrtps::rtps::CDRMessage::readEntityId(&msg, &writer_entity_id);
+                msg.pos = old_pos;
+
+                if (eprosima::fastrtps::rtps::c_EntityId_WriterLiveliness == writer_entity_id)
+                {
+                    num_wlp_writer_heartbeat++;
+                }
                 return false;
             };
 
-    writer_test_transport->drop_ack_nack_messages_filter_ = [&num_writer_acknack](CDRMessage_t&)
+    writer_test_transport->drop_ack_nack_messages_filter_ = [&num_wlp_writer_acknack](CDRMessage_t& msg)
             {
-                num_writer_acknack++;
+                auto old_pos = msg.pos;
+                msg.pos += 4;
+                eprosima::fastrtps::rtps::EntityId_t writer_entity_id;
+                eprosima::fastrtps::rtps::CDRMessage::readEntityId(&msg, &writer_entity_id);
+                msg.pos = old_pos;
+
+                if (eprosima::fastrtps::rtps::c_EntityId_WriterLiveliness == writer_entity_id)
+                {
+                    num_wlp_writer_acknack++;
+                }
                 return false;
             };
 
+    writer_test_transport->interfaceWhiteList.push_back("127.0.0.1");
+
     reader.disable_builtin_transport().add_user_transport_to_pparams(reader_test_transport).
             use_writer_liveliness_protocol(false);
     writer.disable_builtin_transport().add_user_transport_to_pparams(writer_test_transport);
@@ -1614,10 +1654,10 @@ TEST(Discovery, RemoteBuiltinEndpointHonoring)
 
     std::this_thread::sleep_for(std::chrono::seconds(5));
 
-    ASSERT_EQ(num_reader_heartbeat, 3u);
-    ASSERT_EQ(num_reader_acknack, 3u);
-    ASSERT_EQ(num_writer_heartbeat, 3u);
-    ASSERT_EQ(num_writer_acknack, 3u);
+    ASSERT_EQ(num_wlp_reader_heartbeat, 0u);
+    ASSERT_EQ(num_wlp_reader_acknack, 0u);
+    ASSERT_EQ(num_wlp_writer_heartbeat, 0u);
+    ASSERT_EQ(num_wlp_writer_acknack, 0u);
 }
 
 //! Regression test for redmine issue 10674