Replacing UDP transport with customized transport mechanism

[kunnalparihar]

Is there an already existing issue for this?

• I have searched the existing issues

Expected behavior

Hi, thanks for the great work. I am currently trying to Replace UDP transport with a customized transport mechanism (Not UDP, Not SHM and Not TCP) to communicate between two machines using the FAST DDS application layer.
I expect that data is successfully received by the subscriber's application layer.

Current behavior

So Far, I can send the publisher's application layer to the publisher's transport layer and then send this data subscriber's transport layer (on different machines) but unfortunately, I am not sure why I can't send data from the subscriber's transport layer to subscriber's application layer. The on_data_available function is not triggered.

Steps to reproduce

I need your guidance on this. What could be the reason for this issue and how can i fix this.

Fast DDS version/commit

I am using V2.12.1

Platform/Architecture

Ubuntu Focal 20.04 arm64

Transport layer

UDPv4

Additional context

I am not using UDPv4

XML configuration file

No response

Relevant log output

No response

Network traffic capture

No response

[JesusPoderoso]

Hi @kunnalparihar, thanks for using Fast DDS.
I am afraid that it is hard to determine the root cause of the issue with the information that you provided.
Based on your description, a tip could be to pay special atention to the TransportInterface's OpenInputChannel method, which is in charge of setting that bridge between publication's transport layer and application layer.
Check that TransportReceiverInterface callback is properly set and called.

If you are able to provide us more information about your implementation, we may help to locate and address the issue.

[JesusPoderoso]

Also, I am moving this question to the support discussion forum as per Fast DDS CONTRIBUTING guidelines.