Migrating to INET 4.2.5 - Sending a cMessage as a cPacketChunk

[Alberto Núñez]

Hi!

I am migrating the SIMCAN simulation framework -- currently working in omnet++ 5.2.1 and INET 3.6.4 -- to omnet 6 and INET 4.2.5. 

The code compiles well but I am having difficulties to send messages through TcpSocket. In the previous versions of INET, a cMessage could be sent through a TcpSocket using socket->send(). However, in the current version of INET, I need to 'include' a cMessage object in a Packet using the cPacketChunk object. I have read the documentation, and the migration guide, but I could not find the answer for this. 

How can I insert/obtain a cMessage object from/to the Packet object?

Any help would be appreciated! ;)

Thanks a lot,

Alberto

 

[Rudolf Hornig]

You cannot send cMessage in a Packet. You are sending Chunks (which are a representation of bytes) in a Packet. i.e. application data is also have to be represented as a Chunk not as a message. i.e. you extend FieldsChunk instead of Message when you define your application data. See how it is done in other applications (search for *.msg files in the inet/applications folders)

[Alberto Núñez]

Hi Rudolf,

Thanks for the help! I am creating custom messages -- extending from the FieldsChunk class -- and now I can send data through TCP sockets. Its a start ;) Now I have to serialize all the data...

Bests,

Alberto

[Shivani Nazare]

 I encountered this error when i was running Simu5G example . What may be the reason? 

18:03:49 **** Incremental Build of configuration gcc-debug for project simu5G ****

make MODE=debug -j4 all 

make[1]: Entering directory '/e/omnetpp-5.6.2-src-windows/omnetpp-5.6.2/samples/Simu5G-1.1.0/Simu5G-1.1.0/src'

MSGC: apps/cbr/CbrPacket.msg

MSGC: apps/d2dMultihop/MultihopD2DPacket.msg

MSGC: apps/alert/AlertPacket.msg

MSGC: apps/burst/BurstPacket.msg

apps/alert/AlertPacket.msg:16: Error: cannot resolve import 'inet.common.INETDefs'

apps/alert/AlertPacket.msg:17: Error: cannot resolve import 'inet.common.packet.chunk.Chunk'

apps/alert/AlertPacket.msg:20: Error: 'AlertPacket': unknown base class 'inet::FieldsChunk'

apps/d2dMultihop/MultihopD2DPacket.msg:12: Error: cannot resolve import 'inet.common.INETDefs'

apps/d2dMultihop/MultihopD2DPacket.msg:13: Error: cannot resolve import 'inet.common.packet.chunk.Chunk'

apps/d2dMultihop/MultihopD2DPacket.msg:14: Error: cannot resolve import 'inet.common.geometry.Geometry'

apps/d2dMultihop/MultihopD2DPacket.msg:27: Error: 'MultihopD2DPacket': unknown base class 'inet::FieldsChunk'

apps/d2dMultihop/MultihopD2DPacket.msg:31: Error: unknown type 'inet::Coord' for field 'srcCoord' in 'MultihopD2DPacket'

apps/d2dMultihop/MultihopD2DPacket.msg:42: Error: Unknown field 'chunkLength' (not found in any super class)

apps/burst/BurstPacket.msg:12: Error: cannot resolve import 'inet.common.INETDefs'

apps/burst/BurstPacket.msg:13: Error: cannot resolve import 'inet.common.packet.chunk.Chunk'

apps/burst/BurstPacket.msg:20: Error: 'BurstPacket': unknown base class 'inet::FieldsChunk'

make[1]: *** [Makefile:334: apps/d2dMultihop/MultihopD2DPacket_m.h] Error 1

make[1]: *** Waiting for unfinished jobs....

make[1]: *** [Makefile:334: apps/burst/BurstPacket_m.h] Error 1

make[1]: *** [Makefile:334: apps/alert/AlertPacket_m.h] Error 1

apps/cbr/CbrPacket.msg:16: Error: cannot resolve import 'inet.common.INETDefs'

apps/cbr/CbrPacket.msg:17: Error: cannot resolve import 'inet.common.packet.chunk.Chunk'

apps/cbr/CbrPacket.msg:19: Error: 'CbrPacket': unknown base class 'inet::FieldsChunk'

make[1]: *** [Makefile:334: apps/cbr/CbrPacket_m.h] Error 1

make[1]: Leaving directory '/e/omnetpp-5.6.2-src-windows/omnetpp-5.6.2/samples/Simu5G-1.1.0/Simu5G-1.1.0/src'

make: *** [Makefile:2: all] Error 2

"make MODE=debug -j4 all" terminated with exit code 2. Build might be incomplete.

[Alfonso Ariza Quintana]

Which version of inet are you using?

---

De: omn...@googlegroups.com <omn...@googlegroups.com> en nombre de Shivani Nazare <shivanin...@gmail.com>
Enviado: jueves, 24 de junio de 2021 20:13
Para: OMNeT++ Users <omn...@googlegroups.com>
Asunto: [Omnetpp-l] Re: Migrating to INET 4.2.5 - Sending a cMessage as a cPacketChunk

 

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[Shivani Nazare]

Omnet version 5.6.2 and INET version 4.2.2 

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[Alfonso Ariza Quintana]

I suspect that the project that you are using is for inet 4.3.2

---

De: omn...@googlegroups.com <omn...@googlegroups.com> en nombre de Shivani Nazare <shivanin...@gmail.com>

Enviado: viernes, 25 de junio de 2021 12:37
Para: omn...@googlegroups.com <omn...@googlegroups.com>
Asunto: Re: [Omnetpp-l] Re: Migrating to INET 4.2.5 - Sending a cMessage as a cPacketChunk

 

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[Shivani Nazare]

The installation guide said that we require INETv4.2.2 

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[Kamalluddeen Usman]

Hello have you solved the problem?? because I am facing similar issue now.

veins_inet/VeinsInetSampleMessage.msg:27: Error: cannot resolve import 'inet.common.INETDefs'
veins_inet/VeinsInetSampleMessage.msg:28: Error: cannot resolve import 'inet.common.packet.chunk.Chunk'
veins_inet/VeinsInetSampleMessage.msg:34: Error: 'VeinsInetSampleMessage': unknown base class 'inet::FieldsChunk'
make[1]: *** [Makefile:145: veins_inet/VeinsInetSampleMessage_m.h] Error 1
make[1]: Leaving directory '/c/Vanet/Vanettest/src'

make: *** [Makefile:2: all] Error 2

"make MODE=release all" terminated with exit code 2. Build might be incomplete.