[NIFI-9558] ConnectWebSocket leaks connections and duplicates FlowFiles in incoming connection mode

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0, 1.15.1, 1.15.2
• Fix Version/s: 1.17.0
• Component/s: Extensions
• Assignee: Lehel Boér
• Reporter: Peter Turcsanyi
• Created: 10/Jan/22 12:24
• Updated: 06/Jul/22 09:07
• Resolved: 06/Jul/22 09:07

Description

NIFI-8639 introduced input connection for ConnectWebSocket in order to be able to configure the websocket connection via FlowFile attributes.

But ConnectWebSocket handles the connections improperly: Once a new FF is received, it opens a new websocket connection but does not close the old one. It means that multiple connections are maintained and when the websocket server sends something, we get duplicated FlowFiles from ConnectWebSocket.

Issue Links

• relates to: NIFI-8639 Add custom headers and dynamic URLs to ConnectWebsocket
• links to: GitHub Pull Request #5654
• links to: GitHub Pull Request #6176