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The Eclipse plugin cannot communicate with the GlassFish server

I need use Glassfish in a project we're currently working on in Eclipse IDE.
My problem is after installing Glassfish Tools in Eclipse I manage to correctly create a new glassfish server en SERVERS tab but when I try to start it the following error message pop up:
The Eclipse plugin cannot communicate with the GlassFish server....
The Eclipse plugin cannot communicate with the GlassFish server. A
GlassFish Enterprise Server may be running on the same admin or HTTP
port, but with a different root installation.Please also check for
antivirus software, firewall configuration, or VPN setup which might
block some ports.
Actually the problem looks more complex since not only I'm not able to start server but I cannot execute any action on server. Neither deploying, nor clean or whaterever else do work resulting in popping up the above message.
In the internet developers communities I only find clues about CREDENTIAL ERROR but this is not the case.
Looking in the Glassfish log folder there is no trace of any access attempt.
Everythings points at Eclipse plug-in neither be able to communicate with glassfish by any circumstance.
This issue occours either with Glassfish 3.1 (using jdk1.7) and 4.1 (using jdk1.8) and in Eclipse Luna and Mars.
I already tried to create, delete and manage glassfish domains (as suggested in other questions here at StackOverflow) to get over potential "credential-related" issues but no result.
Tried to uninstall and reinstall Glassfish Tools from Eclipse too but still no way.
Both Glasshfish 3.1 an 4.1 start flawlessly manually and NetBeans manage to start them without any problem but, as said, I need to work with eclipse so switching to NetBeans is not the solution (and, please, don't suggest me a manual deploy and server start).
As a last attempt, since I work in Windows, in a console window I tried this:
netstat -a -b
to verify no other service is "taking" port 8080 (although it doesn't seem to be a port problem but a "plug-in communication" one) but it resulted free.
I'm into this mess by days.
Please help.
Thank you

I had exactly the same problem. When I set "preserve sessions across redeployment" in the Eclipse properties dialog for GlassFish, tab "GlassFish", to false (true being the default), everything worked out fine.

I just set the proxy configuration in Eclipse menu Window -> Preferences -> General -> Network Connections (changing the Active Provider value from "Native" to "Manual" and inserting all the needed values for HTTP and HTTPS rows) and added "localhost" and "127.0.0.1" to the section "Proxy bypass".

I have faced the same problem. Generally, the programs that get dynamicly port numbers causes this. Etc: skype, teamviewer.
For me, I solved the problem with starting eclipse before them.
Maybe this works for you too.

I had the same problem, and I solved it by removing the glassfish server from Eclipse, and adding it again.

What I noticed in my own case was that other applications where using port number 4848, so I had to stop all use of port 4848 and restart the domain again ( restart glassfish server )

How to debug a jar remotely from netbeans

I'm trying to figure out how to debug my jar that is running remotely. Here is my scenario:
My .jar will be running from a VPS. This jar basically runs a server
for a game, so it also connects to a mysql db. I start the server with 3 .bat files that looks something like this:
set CLASSPATH=.;dist\aries.jar;dist\mina-core.jar;dist\slf4j-api.jar;dist\slf4j-jdk14.jar;dist\mysql-connector-java-bin.jar
java -Xmx500m -Dwzpath=wz\ -Djavax.net.ssl.keyStore=filename.keystore -Djavax.net.ssl.keyStorePassword=passwd -Djavax.net.ssl.trustStore=filename.keystore -Djavax.net.ssl.trustStorePassword=passwd net.world.WorldServer
pause
What I want to do is start the server on the vps like normal, but debugging the server on my local machine via Netbeans IDE. I don't know if this is possible because people will be connecting to the server (although, I will be debugging a test server which will only have me online).
Note: I have done a lot of searching before coming here and a lot of what I found had to do with using xdebug & php which has doesn't have much to do with my situation (I don't think)
-Thanks

There's a NetBeans FAQ page about this.
In brief:
Add the remote debugging options to your Java command. For example:
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8888,suspend=n
Then, use the attach debugger option in NetBeans and select your server and the port you used above (8888). It's pretty much that easy.
You may want to think about network and firewall considerations, as you may have noticed there are no passwords involved, so anyone who can connect to the port can debug your app. This could be a big security risk. Your VPS provider probably has some tools to help with setting up a secure, private connection.

How do I debug Java servlet filters, on-the-fly, from a remote machine (I'm using Eclipse and Apache Tomcat 5.5)

I wrote a Java servlet filter on my local machine and deployed it a remote (machine) web server. Unfortunately, it's been very difficult and time-consuming trying to trace errors reported by Apache Tomcat 5.5, my JSP/servlet engine. I can't keep writing System.out.println(...), saving, deploying, testing JSP pages, and so on. It's taking too long. There has to be a better, faster way.
Is it possible to remotely debug servlet filters? I don't have a web server on my local machine, which is why I'm asking about remote debugging. Specifically, I'm looking for a way to debug, line-by-line, the servlet filter, on-the-fly, as it's happening on the remote web server. Does such a method exist?
Or, is there a better method than writing to standard output. It's taking too long and I feel that must be a more efficient means of debugging Java servlet filters.
Note: I'm using Eclipse for development.
Thank you very much for any help.
Update
Thank you all for your help. I really appreciate it.
I added the JVM argument to Tomcat, restarted Tomcat. Then, on the machine with Eclipse, I entered in the appropriate info in the Debug config, put the breakpoint in, and tested. Unfortunately, it did not work. In the config, I left it as Socket Attach, clicked apply, and that was it. I pressed the debug button and it said the connection was refused. I tried ports 8000 and 8001 and both did not work.
Let me explain what I'm trying to do, that might be better.
I have a login page called login.jsp. On that page, is a form whose action attribute is servlet/LoginServlet. When the user submits the form, it calls servlet/LoginServlet, which is mapped to a class in the web.xml file. Let's call this class com.mysite.mypkg.classA. In class A, it calls a method from another class called com.custom.mypkg.classB. I want to put a breakpoint in classB.
So, using the url with login.jsp page in the Eclipse debugger won't call it. I tried using servlet/LoginServlet and that also did not work.
What should I put in for the URL? Or, do I debug this type of setup?
Thank you.
Update 2
I found this site here, which is pretty comprehensive. I ran netstat -a and noticed that the debug port is not listed. Windows Firewall is turned off, but there could be another thing blocking the port, who knows. Anyway, I placed the VM argument here and it's not working.
Thank you.

For remote debugging you need to start the server in debug mode. There are couple of ways doing that.
1 > start the server using
catinlina.bat jpda start
2 > Add an jvm argument to the tomcat java process
-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n
Once the server is started in debug mode , you need to change the perspective of the project in eclipse to debug.
Then go to Run - > Debug configuration.
Double click remote java application and enter the details such as
Remote IP address
Debug port . Default tomcat debug port is 8000. If you use jvm argument, use the port mentioned in the jvm argument.
Click Apply
Go to the java file you want to debug.
Put a break point in the source code and run the scenario you want to test (Eg Web application using browser)
Also , ensure that the code in the java file is in sync with code deployed on remote server.
Happy Debugging!!!
Peace.
Sanket Raut

You can attach a debugger to a running Tomcat instance, provided that you gave it the right command line options when you launched it.
The Tomcat Development Wiki explains how to do this, and as a bonus gives you instructions on how to set up to debug from the Eclipse or NetBeans IDEs.
Of course, attaching a debugger to a running Tomcat has both security and performance implications*.
* And OH&S issues - you might get badly scratched if you tried this on the wrong kind of tomcat ...

You should run your remote tomcat with the following starup parameter:
bin/catalina.bat jpda start
Then in Eclipse on your local machine go to Run -> Debug Configurations -> Remote Java Application, create new configuration here, use IP of the remote machine as a host and 8000 as a port there
Run this configuration and use the breakpoints in Eclipse for debugging

GWT run on External Server

I need to test my client application on an external server, with the development mode to a better debug.
i try to run in eclipse the application on the external server, but it doesn't run.
i realy need a step-by-step example
thanks for the help

Check out THIS page. There they have a command how to start your server with GWT debug mode on.
Than make sure your URL is pointed to the right server.
This is how it should look on your machine:
http://{local ip or host name}:8080/AppName/?gwt.codesvr=127.0.0.1:9997
This is what should be entered on the external clint on the same network:
http://[YOUR-IP]:8080/AppName/?gwt.codesvr=[YOUR-IP]:9997
Make sure both ports are matching. Mine is running 8080 because I'm running Java server, you might have different port.

Why http://localhost:8080 available while 127.0.0.1 not? (JSP on MyEclipse+Tomcat)

The System's hosts file is fine, 127.0.0.1 localhost is there...
Ping 127.0.0.1,or my IP, the result is also fine..
Myeclipse's version is 8.0 and I'm just using the Tomcat within it.
A simple JSP+Javabean web project so is deployed.
Now the situation is when I open MyEclipse and start the Tomcat, I can access my site throuth
http://localhost:8080/so/index.jsp, and it displays and runs well (this means 8080 port is all right,right?).But http://127.0.0.1:8080/so/index.jsp is a blank page(no source code) in K-Meleon and the page can't be found in IE.
Still when I tried to access it from another pc in LAN, 'http://myIP:8080/so/index.jsp', it worked only a little. The browser can load the homepage but without CSS, and clicking on any link or even refreshing the page leads to an error page..(While the site gose quite well on my own pc accessed throught localhost)
Is there anyone have ever met this situation?

If you configured tomcat to only listen on the non-loopback interface, this is what you'd get.
See this description of how this gets configured in server.xml.
Use the netstat -a to see what your tomcat is actually listening on.