Regarding Tcp client server program

[RESHU VERMA]

Hello Everyone,

I am a beginner in NS3 and I am trying to develop a TCP client-server
program. To achieve this, I have studied several classes such as
PacketSinkHelper, OnOffApplication, UDPEchoServer, and UDPEchoClient.
I am currently working with NS-3 version 3.38. I have attached my TCP
client-server program along with output, but I am encountering an
issue where the client is unable to connect to the server, resulting
in a "connection refused" error message. I would appreciate any
guidance or assistance in resolving this issue.

Thanks and regards
Reshu Verma

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[Tommaso Pecorella]

You have to tell the client what's the address of the server...

[RESHU VERMA]

Thankyou for your reply sir

But i have mentioned address and port of the server in SetRemote function of tcp_client. In the output we can see the address and port are same for client and server.

Regards

Reshu Verma 

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[Tommaso Pecorella]

102.102.102.102 is the uninitialised address, and SetRemote is commented in your script. 

[RESHU VERMA]

Thankyou for your guidance sir

Could you please provide some guidance on how to resolve the issue? I
have made some modifications to the code and specified the IP address,
but I am still receiving a "connection refused" error.
(I have attached updated file and output)
Thank you for your help.

Regards
Reshu

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[RESHU VERMA]

Thank you for your guidance.

I have managed to resolve the issue, and I am now able to establish
communication among nodes and even modify the contents within the
packet.

regards
Reshu Verma

On Tue, May 9, 2023 at 3:44 PM Tommaso Pecorella <tomm...@gmail.com> wrote:
>

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