omnetpp | OMNeT Discrete Event Simulation Framework

Suppose in a wireless network with 25 nodes, we have a scenario where some of each node sends messages to some other nodes according to a routing protocol such as AODV. We simulate this network. After finishing the simulation, how to obtain the sum of messages byte length on the network layer by the Omnet++ result collection? For each node, we must have two metrics, a metric for sent message byte lengths (e.g. totalSentMessageByteLengths) and a metric for received message byte lengths (e.g. totalReceivedMessageByteLengths). By correct messages, I mean messages received by a node whose destination address field is the address of the same node. If retransmission occurs, it should be summed once for the receiver side, summed the incorrect message byte lengths, and the correct message byte lengths for the sender side. If a node has more than an application, all the message byte lengths generated by all applications of the same node must be calculated. Message byte lengths mean the total byte of header and data on the network layer per byte. An instace code for a node in omnetpp.ini:

I need to find which methods in the Inet are best for the following conditions and requests:

All applications in the application layer such as TcpApp, UDPApp, UdpBasicApp, etc are processed in a common method when a message or packet is received. For example, when a UdpBasicApp packet is sent, that packet is processed in that function(method). Also, a TcpApp packet is received, that packet is processed in that function(method). I guess that function(method) should be belonging a class on the common path before arriving to all applications(I guess that should be in Network Layer or Transport Layer).

Suppose a part of my omnetpp.ini is:

Modules that contain submodules are termed compound modules, as opposed to simple modules at the lowest level of the module hierarchy. Simple modules contain the algorithms of the model. The user implements the simple modules in C++, using the simulation class library A simple module supports handlemessage function, but a compound module doesn't support the handlemessage. An instance and most usage of compound module is AdhocHost module. How can add capability of supporting handlemessage function to compound module? For specially, add the handlemessage capability for AdhocHost module in the network layer.

Is it possible to use a Inet Host like e.g. the WirelessHost from inet and apply custom coding for handling the message when received? I have only seen inet tutorials using the ini and ned files.

When checking basic Tutorials without inet, like tictoc, there was the possibility to use the handleMessage function when a message has been received. Is there a similar possibility when using the WirelessHost or the AdhocHost module in the Inet?

Thanks in advance

After configuring the simulation environment in Veins 5.0, different nodes send and receive messages at the same time. However, the following log is output only for specific messages.

Packet has bit Errors. Lost

Packet was not received correctly, sending it as control message to upper layer

After browsing various information, I modified the omnetpp.ini code as follows, but the same transmission loss log is output.

omnetpp.ini

I have pre-written functions from another project that I want to include as part of my simulations. I have the object file (functions.a) and the header file (functions.h) of these functions.

In a normal C/C++ project, I was able to import them using the steps outlined in this answer. However, my project was created as an OMNeT++ project and it appears the C/C++ Build -> Settings -> GCC C Linker -> Miscellaneous properties are not made available.

Is there a way to access these properties or another alternative to import object files in an OMNeT project?

EDIT

I tried adding

I have parameters stored in an XML file. Below is a sample of the file.

I used SUMO to move vehicles and bus nodes on a four-lane road. The source code of my route file is as follows:

Instead of using OSM, I used SUMO to create a straight road with four lanes one way.

The simulation environment I want is to use IEEE 802.11p and LTE at the same time. So, Veins and SimuLTE framework are used together, and VeinsInetMobility is used instead of TraCI.

When running the actual simulation, it is located in the blue box as shown below. I want to move it to the red box position.

Do I need to edit omnetpp.ini to move it to the red position? I don't know how to write the code to get the position moved.

I am using OMNeT++ 5.5.1, veins 5.0 and SUMO 1.7.0 to simulate a highway having six lanes in total (3 lanes in each direction). I am simulating the network with different number of vehicles (e.g., 50, 100, 150, 200) that I am generating from SUMO.

The simulation runs fine when number of vehicles are 50 and 100. However, when I set the number of vehicles to 150, I get an error: "Cannot open output scalar file ..." (as attached in the screenshot below).

The error occurs when a vehicle (node[84]) leaves the network.

On debugging, I found that this error is causing in callFinish() method of cModule.cc: https://github.com/omnetpp/omnetpp/blob/omnetpp-5.x/src/sim/cmodule.cc#L1428

and it throws an exception that is caught here: https://github.com/omnetpp/omnetpp/blob/omnetpp-5.x/src/sim/cmodule.cc#L1443

Can anyone suggest how to correct it? Many thanks.

Best Regards,

Yasir Saleem