Can you please suggest how to scan the port and check the port is used by
other application.
I am using socket programming to check the port this is right? 


awarnier wrote:
> 
> As I believe someone already told you, there is no need to repeat every 
> message twice.
> 
> dBenjamin wrote:
>> Tomcat not getting shutdown.. it shows the WARNING: StandardServer.await:
>> Invalid command '' received
>> can you pls find server.xml  when I click shutdwon.bat server not
>> listning
>> it shows WARNING: StandardServer.await: Invalid command '' received
>> 
>> can you please help me to solve this issues..
>> 
> Also, you were already given the answer before :
> Probably (but we cannot tell that for sure just by your server.xml 
> file), it looks like /something/ is sending a normal HTTP request (*) 
> /to the shutdown port of the server/, instead of the normal HTTP port.
> 
> Find which client is sending a HTTP request to his port :
>   <Server port="3006" shutdown="SHUTDOWN">
> 
> instead of this port :
>      <Connector connectionTimeout="30000" port="6876" protocol="HTTP/1.1"
> redirectPort="8757"/>
> 
> and you will find the reason.
> 
> (*) as a matter of fact, as per the logfile, it looks like this client 
> is making a connection to port 3006 and then just sending an empty
> request.
> If you have software doing some kind of port scanning, that may be the 
> culprit.
> 
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