android - Unable to open debugger port : java.net.ConnectException "Connection refused"

Question

I'm using Android Studio v1.0.1 to build an app in macOS Yosemite 10.10. When I try to debug the app, it installs correctly but has the error

Error running [app]: Unable to open debugger port : java.net.ConnectException "Connection refused"

When I run the DDMS, it shows the connected devices and the process. The trouble occurs just when trying to debug in Android Studio.

In other forums, I've found that something could have changed the port of the debugger, but that doesn't solve my issue.

Answer 1

Your debug port is probably busy (in use by another process). You can kill all the process associated with the ADB debug port (8601 or higher) using this:

fuser -k 8601/tcp 

UPDATE:

Under OSX, lsof should do the job in substitution of fuser:

lsof -i :8601