i have a problem about AMQ connection.

[blackbear <xi...@naver.com>]

yesterday, i just tested this : 1200users in a topic
eventually, i got this exception.

----------------------------------error------------------------------------------------
ERROR MulticastDiscoveryAgent        - Failed to advertise our service: 
default.ActiveMQ-4.alive.%localhost%tcp://caveman:61616
java.net.SocketException: No buffer space available (maximum connections
reached?): 
Datagram send failed
        at java.net.PlainDatagramSocketImpl.send(Native Method)
        at java.net.DatagramSocket.send(Unknown Source)
        at
org.apache.activemq.transport.discovery.multicast.MulticastDiscoveryAgent.
		doAdvertizeSelf(MulticastDiscoveryAgent.java:390)
        at
org.apache.activemq.transport.discovery.multicast.MulticastDiscoveryAgent.
		doTimeKeepingServices(MulticastDiscoveryAgent.java:374)
        at
org.apache.activemq.transport.discovery.multicast.MulticastDiscoveryAgent.
		run(MulticastDiscoveryAgent.java:336)
        at java.lang.Thread.run(Unknown Source)
ERROR TransportConnector             - Could not accept connection : socket
closed
ERROR TransportConnector             - Could not accept connection : socket
closed
ERROR TransportConnector             - Could not accept connection : socket
closed
ERROR TransportConnector             - Could not accept connection : socket
closed
---------------------------------------------------------------------------------------

but i don't know how many connection is served by AMQ.
anybody knows that problem, please give me a hint. thanks.
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