what pair a requester and a replier

[vibnwis]

I am trying to send a request to the replier, and the replier only replies to the requester. I have changed to mismatch replier and the requester to uxr_object_id(0x02, UXR_REPLIER_ID) and uxr_object_id(0x01, UXR_REQUESTER_ID) respectively. From the test, the requester and the replier still work. Does XRCE-DDS work that way?

Thank you V

[pablogs9]

https://micro-xrce-dds.docs.eprosima.com/en/latest/getting_started.html?highlight=requester#requester-replier

[vibnwis]

Many thanks for that. Actually, I have read that and my interpretation is a requester-replier pair is formed by the uxr_object_id which both are set 0x01. However, obviously, I was wrong. Is it the "service_name" in XML? Any comments or suggestions?

[vibnwis]

I modified the participant ID 0x01 to 0x02. The requester and the replier still works. Again I was wrong about the one participant and many publishers and subscribers. How do we create two separate systems with XRCE_DDS in a computer system?

[vibnwis]

I changed the code to 0x02 and added _2

---

// Create entities participant_id = uxr_object_id(0x02, UXR_PARTICIPANT_ID); const char* participant_xml = "" "" "" "default_xrce_participant" "" "" ""; uint16_t participant_req = uxr_buffer_create_participant_xml(&session, reliable_out, participant_id, 0, participant_xml, UXR_REPLACE);

replier_id = uxr_object_id(0x02, UXR_REPLIER_ID);
const char* replier_xml = "<dds>"
        "<replier profile_name=\"my_requester\""
        "service_name=\"service_name\""
        "request_type=\"request_type_2\""
        "reply_type=\"reply_type_2\">"
        "</replier>"
        "</dds>";

---

Now the requester not receiving any replies, but the replier still receives the request and sending out the reply.

[vibnwis]

My intention is to send a request to the replier, and the replier only replies to the requester. Can I achieve that in XRCE_DDS?

[vibnwis]

uxr_object_id is used for creating participant_id, requester or replier_id. What do they mean from the DDS perspective? I have changed the values to mismatch with the "publisher". However, my tests show that they still work. Appreciate your comments or suggestions!

Thank you