Nguyen Hong Phu created AMQ-5468:
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Summary: AMQ MQTT doesn't reject remote connection after a long
time
Key: AMQ-5468
URL: https://issues.apache.org/jira/browse/AMQ-5468
Project: ActiveMQ
Issue Type: Bug
Components: Connector, MQTT
Affects Versions: 5.10.0, 5.9.1, 5.9.0
Environment: Linux
Reporter: Nguyen Hong Phu
Fix For: NEEDS_REVIEW
Test steps:
- Using jConsole to explore JMX MBean clientConnectors (MQTT+NIO connector).
- Using telnet client connect to MQTT+NIO port
- On jConsole: clientConnectos/mqtt+nio/remoteAddess appear a new connection
with IP and local port which connect to.
- Close telnet program
- Waiting a long time and view remoteAddess again on jConsole but Remote IP
(telnet) does not remove.
Imagine that if a human open a thousand or million connections to server, AMQ
not release connections after short time, then AMQ counld be throws the ERROR
"To many open files" and it doesn't access new connection.
In production server (ulimit max-open-files 65000), i'm using 2 thousand
clients but after 2 days, many ERROR "To many open files" in activemq.log to be
throws.
On jConsole, number of clientId is equals with clients, but RemoteIP contains
more than 65000 IPs.
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