Problem while starting Apache Tomcat Server (Ports already in use)...

Hi,
I am using an Eclipse IDE for web service Client creation.. Also I have used Apache Tomcat5.5 Server inorder to run the application*...*
While starting Tomcat Server, I am getting an error that the port numbers are already in use.
So, I have changed the port numbers in the Server.xml file.
But, still it is throwing the same error , even though the port numbers are not in use.
Can any one please provide some suitable solution for this ASAP....
I need very urgent and so please provide some solution..
Thanks in Advance,
roopa

Hey...
Did u start restarting your machine after you changed the ports..
Is your tomcat server running perfectly after you changed the port number...
I had a similar prob.. But i jus reinstalled both and gave different port numbers while re-installling.
Jus give it it a try.. The ports need to be refreshed.. So try rebooting yr machine first !
All the best !

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WebServer.DirectoryIndex="index.htm"
WebServer.LogPath=C:\Program Files\National Instruments\LabVIEW 8.5\www.log
WebServer.MimeTypes="htm;text/html;gif;image/gif;jpg;image/jpeg;png;image/png;txt;text/plain;html;text/html;jpeg;image/jpeg;css;text/css;llb;application/x-labview-llb;vi;application/x-labview-vi;doc;application/msword;dot;application/msword;bin;application/octet-stream;exe;application/octet-stream;rtf;application/rtf;pdf;application/pdf;ai;application/postscript;eps;application/postscript;ps;application/postscript;csh;application/x-csh;gtar;application/x-gtar;gz;application/x-gz;sh;application/x-sh;tar;application/x-tar;zip;application/zip;hqx;application/mac-binhex40;ua;audio/basic;wav;audio/wav;tif;image/tiff;tiff;image/tiff;xbm;image/x-xbitmap;rtx;text/richtext;qt;video/quicktime;mov;video/quicktime;avi;video/x-msvideo;movie;video/x-sgi-movie;aif;audio/aif;aifc;audio/aif;aiff;audio/aif;aim;application/x-aim;dif;video/x-dv;div;video/x-dv;js;application/x-javascript;pntg;image/x-macpaint;xlb;application/vnd.ms-excel;xls;application/vnd.ms-excel;ppa;application/vnd.ms-powerpoint;ppt;application/vnd.ms-powerpoint;pps;application/vnd.ms-powerpoint;pot;application/vnd.ms-powerpoint;pwz;application/vnd.ms-powerpoint;mid;audio/mid;midi;audio/mid;enc;video/mpeg;m1v;video/mpeg;mp2;video/mpeg;mpa;video/mpeg;mpe;video/mpeg;mpeg;video/mpeg;mpg;video/mpeg;psd;image/x-photoshop;bmp;image/bmp;pic;image/pic;ra;audio/vnd.rn-realaudio;rf;image/vnd.rf-realflash;rm;application/vnd.rn-realmedia;rp;image/vnd.rn-realpix;ram;audio/x-pn-realaudio;rmm;audio/x-pn-realaudio;rnx;application/vnd.rn-realplayer;rt;text/vnd.rn-realtext;rv;video/vnd.rn-realvideo;smi;application/smil;ssm;application/streamingmedia;sithqx;application/mac-binhex40;sit;application/x-stuffit"
WebServer.Port=80 [### or 8000]
WebServer.Enabled=True
WebServer.RootPath=C:\Program Files\National Instruments\LabVIEW 8.5\www
WebServer.TcpAccess="c+*"
WebServer.ViAccess="+*"
[hints welcome here]. That is, I'm at the moment unable to use even my workaround 1 above.
Enrico

Problem connecting oracle database to jsp pages using Apache Tomcat server 8.0

Well...I tried too many things..googled so many times..but still could not find solution to my problem.
I use windows 8 Enterprise Edition(if this has to do something with the problem)
Oracle 11.2.0
Apache Tomcat server 8.0
JDK 1.7
My oracle is installed in the D: drive and tomcat in c:. i copied the ojdbc6.jar file from oracle to lib directory of tomcat server.
Then i set CLASSPATH in environment variables as "C:\Program Files\Apache Software Foundation\Tomcat 8.0\lib\ojdbc6.jar" in system variables
My path variable is set as "C:\Program Files\Java\jdk1.7.0_02\bin".
My program is as follows in notepad:
<%@ page import="java.sql.*" %>
<html>
<body>
<%
Connection conn;
Statement st;
ResultSet rs;
try{
new oracle.jdbc.driver.OracleDriver();
String dbURL="jdbc:odbc:oracle:thin:@localhost:1521:XE";
String userId="system";
String pwd="moon";
conn=DriverManager.getConnection(dbURL,userId,pwd);
st=conn.createStatement();
rs= st.executeQuery("SELECT * FROM login");
while(rs.next())
System.out.println(rs.getString(1)+""+rs.getString(2));
catch(Exception e){}
%>
</body>
</html>
I get too many errors then
eroors
org.apache.jasper.JasperException: An exception occurred processing JSP page /page2.jsp at line 14
11: String userId="system";
12: String pwd="moon";
13:
14: conn=DriverManager.getConnection(dbURL,userId,pwd);
15: st=conn.createStatement();
16:
17: rs= st.executeQuery("SELECT * FROM login");
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
javax.servlet.ServletException: java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:905)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:834)
     org.apache.jsp.page2_jsp._jspService(page2_jsp.java:102)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
     org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Nothing solved this problem.

>> Nothing solved this problem.
Can't fix a problem 'till an actual problem is identified.
>> ODBC Driver Manager ... Data source name not found
That appears to be ODBC drivers looking for a DSN (Data Set Name). If it wants a DSN, the DSN has to be specified in the code, and the DSN has to be configured in the windows host ODBC applet. So that is at least two squirrels to get in the right tree before moving forward. A ...host:...[port:]SID|service name are some of the bits needed in a jdbc connect string, and that is in no way related to DSNs. A Whole Different Animal. If it wants a DSN that might be what needs to go in the URL bit.
And ODBC setups can be confusing, especially if an x64 OS is in the mix- if that is the case there are two different ODBC configuration applets, one for x64 the other for x86, and if one gets as far as talking to an actual database it might toss an architecture error. Only way to fix that "problem" is *delete* the ODBC DSN and then run the correct (maybe the x86) ODBC config utility, and set up the DSN. Again.

Problem while starting weblogic server 10.3.3.0

Hi,
I have installed the Weblogic server 10.3.3.0 on machine which has Microsoft Windows XP 2002, Service pack3. RAM - 2GB
On that Weblogic server 10.3.3.0 i have installed SOA 11.1.1.2.0 and applied the patch set 2 on SOA 11.1.1.2.0 to upgrate it to SOA 11.1.1.3.0. I have used XE database which is installed on another machine.
After the installation of SOA 11.1.1.3.0 I have created one domain.
While starting the Admin server of that domain, it prompt me with an error as :
** Setting up SOA specific environment for win...
PATH=D:\ORACLE~1\MIDDLE~1\patch_wls1033\profiles\default\native;D:\ORACLE~1\MIDDLE~1\patch_ocp353\profiles\default\native;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\native\win\32;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\bin;D:\ORACLE~1\MIDDLE~1\modules\ORGAPA~1.1\bin;D:\ORACLE~1\MIDDLE~1\JDK160~1\jre\bin;D:\ORACLE~1\MIDDLE~1\JDK160~1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Windows Imaging\;C:\WINDOWS\Tools\Wintools;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\Program Files\Microsoft SQL Server\90\DTS\Binn\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\Microsoft SQL Server\90\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\PrivateAssemblies\;;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\native\win\32\oci920_8;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\thirdparty\edifecs\XEngine\bin
USER_MEM_ARGS=-Xms512m -Xmx1024m -XX:PermSize=128m -XX:MaxPermSize=512m
JAVA_OPTIONS= -Xverify:none
** End SOA Specific environment setup for win.
JAVA Memory arguments: -Xms512m -Xmx1024m -XX:PermSize=128m -XX:MaxPermSize=512m
WLS Start Mode=Development
CLASSPATH=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\ext\jdbc\oracle\11g\ojdbc6dms.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\user-patch.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\soa-startup.jar;;D:\ORACLE~1\MIDDLE~1\patch_wls1033\profiles\default\sys_manifest_classpath\weblogic_patch.jar;D:\ORACLE~1\MIDDLE~1\patch_ocp353\profiles\default\sys_manifest_classpath\weblogic_patch.jar;D:\ORACLE~1\MIDDLE~1\JDK160~1\lib\tools.jar;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\weblogic_sp.jar;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\weblogic.jar;D:\ORACLE~1\MIDDLE~1\modules\features\weblogic.server.modules_10.3.3.0.jar;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\webservices.jar;D:\ORACLE~1\MIDDLE~1\modules\ORGAPA~1.1/lib/ant-all.jar;D:\ORACLE~1\MIDDLE~1\modules\NETSFA~1.0_1/lib/ant-contrib.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\oracle.soa.common.adapters_11.1.1\oracle.soa.common.adapters.jar;D:\ORACLE~1\MIDDLE~1\ORACLE~1\soa\modules\commons-cli-1.1.jar;D:\ORACLE~1\MIDDLE~1\ORACLE~1\soa\modules\oracle.soa.mgmt_11.1.1\soa-infra-mgmt.jar;D:\ORACLE~1\MIDDLE~1\ORACLE~1\modules\oracle.xdk_11.1.0\xsu12.jar;D:\ORACLE~1\MIDDLE~1\modules\features\weblogic.server.modules.xquery_10.3.1.0.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\db2jcc4.jar;D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\soa-infra;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\fabric-url-handler_11.1.1.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\quartz-all-1.6.5.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\oracle.soa.fabric_11.1.1\oracle.soa.fabric.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\oracle.soa.adapter_11.1.1\oracle.soa.adapter.jar;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\modules\oracle.soa.b2b_11.1.1\oracle.soa.b2b.jar;D:\ORACLE~1\MIDDLE~1\ORACLE~1\modules\oracle.jrf_11.1.1\jrf.jar;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\common\derby\lib\derbyclient.jar;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\xqrl.jar
PATH=D:\ORACLE~1\MIDDLE~1\patch_wls1033\profiles\default\native;D:\ORACLE~1\MIDDLE~1\patch_ocp353\profiles\default\native;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\native\win\32;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\bin;D:\ORACLE~1\MIDDLE~1\modules\ORGAPA~1.1\bin;D:\ORACLE~1\MIDDLE~1\JDK160~1\jre\bin;D:\ORACLE~1\MIDDLE~1\JDK160~1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Windows Imaging\;C:\WINDOWS\Tools\Wintools;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\Program Files\Microsoft SQL Server\90\DTS\Binn\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\Microsoft SQL Server\90\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\PrivateAssemblies\;;D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\native\win\32\oci920_8;D:\OracleWebLogic\Middleware\Oracle_SOA1\soa\thirdparty\edifecs\XEngine\bin
* To start WebLogic Server, use a username and *
* password assigned to an admin-level user. For *
* server administration, use the WebLogic Server *
* console at http:\\hostname:port\console *
starting weblogic with Java version:
Starting WLS with line:
D:\ORACLE~1\MIDDLE~1\JDK160~1\bin\java -client -Xms512m -Xmx1024m -XX:PermSize=128m -XX:MaxPermSize=512m -Dweblogic.Name=AdminServer -Djava.security.policy=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\weblogic.policy -Xverify:none -da -Dplatform.home=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3 -Dwls.home=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server -Dweblogic.home=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server -Ddomain.home=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE -Dcommon.components.home=D:\ORACLE~1\MIDDLE~1\ORACLE~1 -Djrf.version=11.1.1 -Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger -Djrockit.optfile=D:\ORACLE~1\MIDDLE~1\ORACLE~1\modules\oracle.jrf_11.1.1\jrocket_optfile.txt -Doracle.domain.config.dir=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\FMWCON~1 -Doracle.server.config.dir=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\FMWCON~1\servers\AdminServer -Doracle.security.jps.config=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\fmwconfig\jps-config.xml -Djava.protocol.handler.pkgs=oracle.mds.net.protocol -Digf.arisidbeans.carmlloc=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\FMWCON~1\carml -Digf.arisidstack.home=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE\config\FMWCON~1\arisidprovider -Dweblogic.alternateTypesDirectory=D:\ORACLE~1\MIDDLE~1\ORACLE~1\modules\oracle.ossoiap_11.1.1,D:\ORACLE~1\MIDDLE~1\ORACLE~1\modules\oracle.oamprovider_11.1.1 -Dweblogic.jdbc.remoteEnabled=false -da:org.apache.xmlbeans... -Dsoa.archives.dir=D:\OracleWebLogic\Middleware\Oracle_SOA1\soa -Dsoa.oracle.home=D:\OracleWebLogic\Middleware\Oracle_SOA1 -Dsoa.instance.home=D:\ORACLE~1\MIDDLE~1\USER_P~1\domains\SOACOE -Dtangosol.coherence.clusteraddress=227.7.7.9 -Dtangosol.coherence.clusterport=9778 -Dtangosol.coherence.log=jdk -Djavax.xml.soap.MessageFactory=oracle.j2ee.ws.saaj.soap.MessageFactoryImpl -Djava.protocol.handler.pkgs="oracle.mds.net.protocol|oracle.fabric.common.classloaderurl.handler|oracle.fabric.common.uddiurl.handler|oracle.bpm.io.fs.protocol" -Dweblogic.transaction.blocking.commit=true -Dweblogic.transaction.blocking.rollback=true -Djavax.net.ssl.trustStore=D:\ORACLE~1\MIDDLE~1\WLSERV~1.3\server\lib\DemoTrust.jks -Dem.oracle.home=D:\OracleWebLogic\Middleware\oracle_common -Djava.awt.headless=true -Dums.oracle.home=D:\OracleWebLogic\Middleware\Oracle_SOA1 -Dweblogic.management.discover=true -Dwlw.iterativeDev= -Dwlw.testConsole= -Dwlw.logErrorsToConsole= -Dweblogic.ext.dirs=D:\ORACLE~1\MIDDLE~1\patch_wls1033\profiles\default\sysext_manifest_classpath;D:\ORACLE~1\MIDDLE~1\patch_ocp353\profiles\default\sysext_manifest_classpath weblogic.Server
Error occurred during initialization of VM
Could not reserve enough space for object heap
Any help How to resolve this error.I have increased the virtual memory of the drive in which i have done the installation.
Thanks
Mala

Hi
Go to your soa domain root folder/bin and open setSOADomainEnv.cmd file in any text editor. Search for -Xmx1024m and replace that with -Xmx512m. I would prefer copy this entire line and comment one old line and edit the new line with this new value of 512m. So that you know what you changed later on. I do something like this on my side
REM JEGGA changed -Xmx1024m to -Xmx512m
set DEFAULT_MEM_ARGS=-Xms512m -Xmx512m
REM set DEFAULT_MEM_ARGS=-Xms512m -Xmx1024m
Now you should be able to start the domain. Still 2GB is kind of low memory to start SOA Domain with AdminServer and managed server. One other option you have is while Creating SOA Domain, do NOT use all the defaults, instead check the boxes like to changed managed servers etc. And remove the soa managed server during this process and remove the cluster. Just have only one Admin Server and all the SOA Modules deployed to this AdminServer only. In this way, you will have SOA Domain with only one AdminServer and you can start this admin server alone. You can deploy any SOA Application on this domain and it should work fine.
Refer this thread for creating single server soa domain:
Re: Combining two WLS domains
Thanks
Ravi Jegga

Problem occured while starting the Manged server of weblogic9.2

Hi all,
I am cnfiguring the OWSM on 2 machine which are in Clustering mode(Pre-Prod Env)
I have done the installation of SOA SUITE10.1.3.1 for the same.
After installation , i started Admin server.
But i am facing issue while starting the managed server of weblogic9.2 through admin Server Console.(which are clustered).The managed Server state goes to ADMIN and raise the error that failed to start the server.It does not go into RUNNING state.
The error i was recieved is :
*####<May 13, 2009 10:21:01 AM IST> <Info> <ServletContext-/bea_wls_internal> <ggneai65> <AdminServer> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1242190261158> <000000> <HTTPClntLogin: Login rejected with code: 'Failed', reason: java.net.ProtocolException: HTTP tunneling is disabled*
*     at weblogic.rjvm.http.HTTPServerJVMConnection.acceptJVMConnection(HTTPServerJVMConnection.java:88)*
*     at weblogic.rjvm.http.TunnelLoginServlet.service(TunnelLoginServlet.java:80)*
*     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)*
*     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)*
*     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)*
*     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)*
*     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)*
*     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3244)*
*     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)*
*     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)*
*     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2010)*
*     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1916)*
*     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)*
*     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)*
*     at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)*
*'>*
because of which deployment of OWSM failed at managed server.
please help me for the same ASAP.
its urgent.
Regards
Gaurav

That is an INFO message you received and would not stop a managed server from starting. To get rid of that INFO message, enable tunneling on the admin server.
Check your node manager log file to see why the managed server is not starting.

Tomcat Servlet - TCP Port Already in Use?

My problem is that tomcat/servlet is not releasing its TCP port after my servlet closes the port. Next time a servlet tries to use the port it gets an error "Port already in use". Using netstat I can see the port is still in use. If I stop tomcat and restart it, the port is released. I have not had this sort of problem writing C programs that use sockets.
My setup is Fedora Core 6 with JDK1.5_14 and Tomcat 5.5.26. I know it's not the latest, but sockets and streams have been around for a long time.
Actual implementation uses a trivial javaserver page to instantiate a class to create/accept connection from a client (JApplet). After connection, it starts a thread to receive data. I am using ServerSocket(), InputStreamReader(), and OutputStreamWriter(). On ServerSocket I set ReuseAddress to true.
I have try/catch on all my I/O and use tomcat context log for error and OK messages. Data transfer is perfect. Detect close by client works. In the context log I see close of streams and ServerSocket occur with no exceptions. Then, I manually close the jsp window. No indication of any problems. If I use different port 2nd time (e.g. 50001) it all works perfect. If I use my default (50000) again, servlet gets an error during bind, "Port already in use".
2.5 years with Java. 5 years with Linux and C.
Please advise or refer

rwengr wrote:
My problem is that tomcat/servlet is not releasing its TCP port after my servlet closes the port. Next time a servlet tries to use the port it gets an error "Port already in use". Using netstat I can see the port is still in use. If I stop tomcat and restart it, the port is released. I have not had this sort of problem writing C programs that use sockets.Nice.... Not sure that matters though.
>
My setup is Fedora Core 6 with JDK1.5_14 and Tomcat 5.5.26. I know it's not the latest, but sockets and streams have been around for a long time.
Actual implementation uses a trivial javaserver page to instantiate a class to create/accept connection from a client (JApplet). Bleah! Don't use a JSP for that. Use a servlet at worst. At best use a Servlet to start some other socket manager class which you can/have tested outside the Servlet Container environment.
After connection, it starts a thread to receive data. I am using ServerSocket(), InputStreamReader(), and OutputStreamWriter(). On ServerSocket I set ReuseAddress to true.
I have try/catch on all my I/O and use tomcat context log for error and OK messages. Data transfer is perfect. Detect close by client works. In the context log I see close of streams and ServerSocket occur with no exceptions. Then, I manually close the jsp window. Closing the browser window has no affect on the server.
No indication of any problems. If I use different port 2nd time (e.g. 50001) it all works perfect. If I use my default (50000) again, servlet gets an error during bind, "Port already in use".
2.5 years with Java. 5 years with Linux and C.
Please advise or referShow some code. If you just want some generic advice it would be to close the port, as soon as you don't need it anymore. But you know that. Without any further code I think that is about all that can be said.
P.S. Make the code as small as possible, compilable, but still demonstrating the problem. Also see: [this tutorial as an example...|http://www.javaworld.com/javaworld/jw-12-1996/jw-12-sockets.html?page=1]

Problem while starting Apache Tomcat Server (Ports already in use)...

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