Debian Configuration :: Cannot Open Java Socket - Port (9955) Closed

Feb 26, 2010

I have a java application that I wrote recently. It runs off port 9955. The application runs great on my mac server. When I installed it on my linux box i cant get to it from outside the box. A port scan shows the port as closed. I flushed my iptables, did not help. I can telnet into the app locally, from the server and it works great. I cannot telnet from outside the server. I have a reference to the application in /etc/services as a tcp port (which it is).

netstat shows it as listening
netstat --listen
tcp6 0 0 [::]: SimpleSocketTest [::]:* LISTEN
netstat -anp | grep 9955
tcp6 0 0 ::: 9955 :::* LISTEN1484/java

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client.c
Serv_Addr.sin_family = AF_INET;
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[Code]....

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Code:

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[code]....

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Code:
PORT STATE SERVICE
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[code]....

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[Code].....

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e.g.

Code:
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code....

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I have a relative fresh install of jessie in which I face a high cpu usage of java (top shows about 165% CPU and 12% MEM). The problem occurs right after booting the computer. These values stay constantly high for days if I leave the box running. This happens even if the computer is just sitting there without doing anything.

I have to kill java to go back to normal. So, when I do a
Code: Select allkillall -KILL java
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Currently I am based on openjdk
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2) java -version -> Code: Select alljava version "1.7.0_95"
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