[Proposal] Include channel name in IOPub status messages #839
Description
Another idea sparked by #838.
Today, both the control and shell channel can trigger IOPub status messages, but there is no easy way to tell which parent channel caused a given IOPub message. We could add "channel" as part of the IOPub's message specification, e.g.:
{
...
"parent_header": {
"channel": "shell",
...
},
"execution_state": ...
}