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https://issues.apache.org/jira/browse/DISPATCH-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034600#comment-17034600
 ] 

ASF GitHub Bot commented on DISPATCH-1518:
------------------------------------------

ChugR commented on pull request #676: DISPATCH-1518: Added ability to turn on 
protocol frame trace logging …
URL: https://github.com/apache/qpid-dispatch/pull/676#discussion_r377764623
 
 

 ##########
 File path: src/router_node.c
 ##########
 @@ -1432,6 +1432,30 @@ static void CORE_link_second_attach(void *context, 
qdr_link_t *link, qdr_terminu
         qdr_link_stalled_outbound(link);
 }
 
+
+static void CORE_conn_trace(void *context, qdr_connection_t *qdr_conn, bool 
trace)
+{
+    qd_connection_t      *qconn  = (qd_connection_t*) 
qdr_connection_get_context(qdr_conn);
+
+    if (!qconn)
+        return;
+
+    pn_transport_t *tport  = pn_connection_transport(qconn->pn_conn);
+
+    if (!tport)
+        return;
+
+    if (trace) {
+        pn_transport_trace(tport, PN_TRACE_FRM);
+        pn_transport_set_tracer(tport, connection_transport_tracer);
+
+    }
+    else {
+        pn_transport_set_tracer(tport, 0);
 
 Review comment:
   When pn_tracer_t tracer is zero then an assert triggers in the proton code.
 
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> Add ability to turn on router trace logging for a specific connection 
> ----------------------------------------------------------------------
>
>                 Key: DISPATCH-1518
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1518
>             Project: Qpid Dispatch
>          Issue Type: Improvement
>          Components: Container
>    Affects Versions: 1.9.0
>            Reporter: Ganesh Murthy
>            Assignee: Ganesh Murthy
>            Priority: Major
>             Fix For: 1.11.0
>
>
> It would be nice to be able to turn on tracing per connection, e.g. something 
> like `qdmanage update --type=connection id=897644 tracing=true`
> That way you could benefit from protocol level tracing on connections of 
> interest as and when needed. Perhaps also there could be some way of 
> specifying a policy for connection tracing, e.g. all connections whose 
> container id is 'foo' or who are connecting from 192.666.555.444 or similar.



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