8000 Is the HTTP port in development just in case you are using port 808433 Is similar for HTTPS22 Is SSH port Normally you define a free port in a user range say 9009, to be your debug port. Then you use a suitable java debugger to connect to that port. I've never used vagrant, but it sounds like you'd also need that debug port say 9009, to have port forwarding configured. Once port forwarding is configured the debug port 9009 should be accessible outside the VM.
> Date: Thu, 30 Apr 2015 14:44:13 -0700 > Subject: Debugging Tomcat Running in Vagrant using Port Forwarding > From: dlan...@gmail.com > To: users@tomcat.apache.org > > Hi, > > I was wondering if anyone here might have any idea about this issue I was > having debugging my Tomcat app. I posted this question on Stack Overflow > several days ago but didn't get any responses (and it said it was only > viewed 15 times despite having the Java and Tomcat tags which is weird). > Anyway, here is the question, thanks: > > > I'm trying to attach my Eclipse debugger running on my Windows host to a > Tomcat 8 server running in my local Vagrant box (Virtual Box) running > CentOS 7. > > Here is the full error from the Eclipse logs: > > java.net.SocketException: Connection reset > at java.net.SocketInputStream.read(SocketInputStream.java:179) > at java.io.DataInputStream.readFully(DataInputStream.java:189) > at java.io.DataInputStream.readFully(DataInputStream.java:163) > at > org.eclipse.jdi.internal.connect.SocketTransportService.readHandshake(SocketTransportService.java:216) > at > org.eclipse.jdi.internal.connect.SocketTransportService.access$7(SocketTransportService.java:212) > at > org.eclipse.jdi.internal.connect.SocketTransportService$3.run(SocketTransportService.java:183) > at java.lang.Thread.run(Thread.java:761) > > > The output from `vagrant up` seems correct (port 8000 is the debugging > port): > > ==> default: Preparing network interfaces based on configuration... > default: Adapter 1: nat > ==> default: Forwarding ports... > default: 8000 => 8000 (adapter 1) > default: 8443 => 8443 (adapter 1) > default: 22 => 2222 (adapter 1) > > I can access my application (using https://localhost:8443/app) via a > browser from my host without issue; connecting the debugger is the issue. > The debugger is configured for a Remote Java Application with connection > properties: > > Host: localhost > Port: 8000 > > Starting Tomcat of course displays the correct: > > Listening for transport dt_socket at address: 8000 > > > Based on the some other questions, the answer maybe have something to do > with configuring Tomcat to run on 0.0.0.0 instead of the default. > > So I tried configuring the Connectors in Tomcat's server.xml with the line > address="0.0.0.0" but the result was the same. > > Any other ideas about getting this to work? Also, assuming the answer is > something to do with changing the address to 0.0.0.0, why would I need to > do that to get the debugger to work if accessing the app via browser is > already fine on localhost:8443? > > P.S. It is not a firewall issue.
