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#94 (Bd)SeqNum flow control issue's

Milestone: 2.0.0.0 Standard Feature Product (SFP)

Status: closed

Owner: hermsen

Labels: None

Updated: 2020-12-12

Created: 2020-11-21

Creator: hermsen

Private: No

The EoN sends NDATA payloads.
The Device is allowed to send DDATA payloads (by/through command of the EoN)
It seems that the DDATA payloads are tagged with a SeqNum that is too high (it needs to be N, but is tagged with N+1)

This incorrect tagging (N+1) causes/triggers the Server Node to issue a DBIRTH NCMD.

Improve "assigning of seqnums to payloads" by implementing a mechanism to tag payloads "just in time" with a correct seqnum. This ticket also has a certain relation with "Improve control of/over/with statemachine [#93]"

hermsen - 2020-11-21

Incorrect SeqNum tagging is solved in V1.1.0.10 in my branch.

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hermsen - 2020-11-23

V1.10.0.11 has resolved the issue completely.

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hermsen - 2020-11-26

status: accepted --> pending
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hermsen - 2020-11-26

Fix present in 1.1.0.13 in personal branch => merge into trunk

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Description has changed:

Diff:

--- old
+++ new
@@ -2,13 +2,6 @@
 The Device is allowed to send DDATA payloads (by/through command of the EoN)
 It seems that the DDATA payloads are tagged with a SeqNum that is too high (it needs to be N, but is tagged with N+1)

-This incorrect tagging (N+1) causes/triggers the Server Node to issue a DBIRTH NCMD. 
-This results in a Sparkplug EoN Node that is in a continuous cycle;
+This incorrect tagging (N+1) causes/triggers the Server Node to issue a DBIRTH NCMD.

-    NBIRTH, 
-    NDATA, 
-    DBIRTH, 
-    DDATA, 
-    NCMD-ReBirth (next step is NBIRTH again)
-    
 Improve &#34;assigning of seqnums to payloads&#34; by implementing a mechanism to tag payloads &#34;just in time&#34; with a correct seqnum. This ticket also has a certain relation with &#34;Improve control of/over/with statemachine [#93]&#34;

Tickets: ~~#93~~

hermsen - 2020-12-12

status: pending --> closed
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