Unable to open debugger port in IntelliJ

Question

Unable to open debugger port in intellij. The port number 9009 matches the one which has been set in the configuration file for the application.

<java-config debug-options="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=9009" system-classpath="" native-library-path-prefix="D:\Project\lib\windows\64bit" classpath-suffix="">
    <jvm-options>-XX:MaxPermSize=192m</jvm-options>
    <jvm-options>-client</jvm-options>
    <jvm-options>-XX:+UnlockDiagnosticVMOptions</jvm-options>
    <jvm-options>-XX:+LogVMOutput</jvm-options>
    <jvm-options>-XX:LogFile=${com.sun.aas.instanceRoot}/logs/jvm.log</jvm-options>
    <jvm-options>-Djava.endorsed.dirs=${com.sun.aas.installRoot}/modules/endorsed${path.separator}${com.sun.aas.installRoot}/lib/endorsed</jvm-options>
    <jvm-options>-Djava.security.policy=${com.sun.aas.instanceRoot}/config/server.policy</jvm-options>
    <jvm-options>-Djava.security.auth.login.config=${com.sun.aas.instanceRoot}/config/login.conf</jvm-options>
    <jvm-options>-Dcom.sun.enterprise.security.httpsOutboundKeyAlias=s1as</jvm-options>
    <jvm-options>-Djavax.net.ssl.keyStore=${com.sun.aas.instanceRoot}/config/keystore.jks</jvm-options>
    <jvm-options>-Djavax.net.ssl.trustStore=${com.sun.aas.instanceRoot}/config/cacerts.jks</jvm-options>
    <jvm-options>-Djava.ext.dirs=${com.sun.aas.javaRoot}/lib/ext${path.separator}${com.sun.aas.javaRoot}/jre/lib/ext${path.separator}${com.sun.aas.instanceRoot}/lib/ext</jvm-options>
    <jvm-options>-Djdbc.drivers=org.apache.derby.jdbc.ClientDriver</jvm-options>
    <jvm-options>-DANTLR_USE_DIRECT_CLASS_LOADING=true</jvm-options>
    <jvm-options>-Dcom.sun.enterprise.config.config_environment_factory_class=com.sun.enterprise.config.serverbeans.AppserverConfigEnvironmentFactory</jvm-options>
    <jvm-options>-Dosgi.shell.telnet.port=4766</jvm-options>
    <jvm-options>-Dosgi.shell.telnet.maxconn=1</jvm-options>
    <jvm-options>-Dosgi.shell.telnet.ip=127.0.0.1</jvm-options>
    <jvm-options>-Dfelix.fileinstall.dir=${com.sun.aas.installRoot}/modules/autostart/</jvm-options>
    <jvm-options>-Dfelix.fileinstall.poll=5000</jvm-options>
    <jvm-options>-Dfelix.fileinstall.debug=1</jvm-options>
    <jvm-options>-Dfelix.fileinstall.bundles.new.start=true</jvm-options>
    <jvm-options>-Dorg.glassfish.web.rfc2109_cookie_names_enforced=false</jvm-options>
    <jvm-options>-XX:NewRatio=2</jvm-options>
    <jvm-options>-Xmx2048m</jvm-options>
  </java-config>

Configuration in IntelliJ:

When I try and enable the remote debugging in for this application it comes up with the following error:

Answer 1

You may have to change the debugger port if your port is already used by another program. To do so:

• Run
• Edit Configurations
• Startup/Connection tab
• Debug
• Change the port here

---

Or, maybe in other versions:

• Run
• Edit Configurations
• Remote > Remote debug in the list on the left
• Configuration tab, Settings section
• Port: change the port here

Answer 2

Add the following parameter debug-enabled="true" to this line in the glassfish configuration. Example:

<java-config  debug-options="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=9009" debug-enabled="true"
  system-classpath="" native-library-path-prefix="D:\Project\lib\windows\64bit" classpath-suffix="">

Start and stop the glassfish domain or service which was using this configuration.

Answer 3

You must set CHMOD +x (execute for *.sh or *.bat files). For example, I am using macOS

cd /Users/donhuvy/Documents/tools/apache-tomcat-9.0.12/bin
sudo chmod +x *.sh

Then IntelliJ IDEA, and Apache Tomcat running or debugging just good.

Answer 4

我遇到了同样的问题，这个解决方案也对我有用：在 Intellij 调试配置中提供 IP 127.0.0.1 而不是主机名“localhost”，以防你使用这个主机名。

Answer 5

I'm hoping your problem has been solved by now. If not, try this... It looks like you have server=y for both your app and IDEA. IDEA should probably be server=n . Also, the (IDEA) client should have an address that includes both the host name and the port, eg, address=127.0.0.1:9009 .

Answer 6

1. In glassfish\\domains\\domain1\\config\\domain.xml set before start server:

 <java-config classpath-suffix="" debug-options="-agentlib:jdwp=transport=dt_socket,address=9009,server=y,suspend=n" java-home="C:\\Program Files\\Java\\jdk1.8.0_162" debug-enabled="true" system-classpath="">

or set debug-enabled="true" server=y,suspend=n in http://localhost:4848/common/index.jsf

2. In current Idea 2018 - Server Run Configuration - Debug - Port - address

Answer 7

This one worked for me-- If the issue still persists (in case you are not using a glassFish server), then close your JIdea and stop the server. This will disable the ports connectivity. Then start your server and JIdea, this will start fresh connectivity with the ports, resolving the issue.

Answer 8

For me, the problem was that catalina.sh didnt have execute permissions. The "Unable to open debugger port in intellij" message appeared in Intellij, but it sort of masked the 'could not execute catalina.sh' error that appeared in the logs immediately prior.

Answer 9

This error can happen Tomcat is already running. So make sure Tomcat isn't running in the background if you've asked Intellij to start it up ( default ).

Also, check the full output window for more errors. As a more useful error may have preceded this one ( as was the case with my configuration just now )

Answer 10

Answer is pretty simple, I also faced the problem finally I got perfect solution. Create Debug Create Remote debug with following configuration Firstly run by debug. It gives you waitng for socket 5005 then run with remote debug

Answer 11

Try to connect with telnet , if it connects then it shows below:

$telnet 10.238.136.165 9999 Trying 10.238.136.165... Connected to 10.238.136.165. Escape character is '^]'. Connection closed by foreign host.

If port is not available (either because someone else is already connected to it or the port is not open etc) then it shows something like it shows like below:

$telnet 10.238.136.165 9999 Trying 10.238.136.165... telnet: connect to address 10.238.136.165: Connection refused telnet: Unable to connect to remote host

So I think one needs to see whether:

• the application is property listening to port or not

• or someone else has already connected to it

Also try to connect on that m/c itself first like $telnet localhost 9999

Answer 12

使用给定的命令运行 Spring Boot 应用程序以在服务器在端口 8090 上启动时在端口 6006 上启用调试：

mvn spring-boot:run -Drun.jvmArguments='-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=6006' -Dserver.port=8090

Answer 13

Set the MAVEN_OPTS. It should work !!

export MAVEN_OPTS="-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=4000,server=y,suspend=n"

mvn spring-boot:run -Dserver.port=8090

Answer 14

Your Service/ Application might already be running. In Search enter Services and you will get list of services. Stop yours and then try again.

Answer 15

I had the same issue, I just have to remove the HTTP protocol from the URL. That's it.

I hope it works for you.

Answer 16

I once have this problem too. My solution is to work around this problem by kill the application which is using the port. Here is a article to teach us how to check which application is using which port, find it and kill/close it.

Answer 17

只需再次点击调试图标即可在几秒钟内解决我的问题。

Answer 18

确保在 File --> Project Structure (Project | SDKs) 下为您的应用程序指定 SDK 和 Project SDK

Answer 19

In my case, I was not setting the debug port while starting the application. I am using tomcat to deploy 3 war files, and I forgot to configure the debug port.

Tomcat allows us to configure this via setenv.sh .

Here are the commands to create setenv.sh file in the bin directory of my tomcat installation and provide the debug arguments/port.

tee /usr/share/tomcat9/bin/setenv.sh << EOF
export CATALINA_OPTS="$CATALINA_OPTS -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005"
EOF

service tomcat9 restart