connect failed: ECONNREFUSED

Ján Srniček picture Ján Srniček · Aug 20, 2013 · Viewed 77.7k times · Source

I am developing one app, and what I think I wanna do is receive data from server database in android. So I started to run some tutorials. I found one that is doing pretty much what I want. But I am getting:

detailMessage   "failed to connect to localhost/127.0.0.1 (port 8080): connect failed: ECONNREFUSED (Connection refused)" (id=830021648792) 

Whole code of this tutorial is here link

Error occurs on :

OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());

I checked that:

  • firewall is disabled
  • ping is working
  • connection string is exactly the same as when I run the servlet from server admin interface - http://localhost:8080/Requestor/RQSRV -the servlet is running

My configuration :

  • Server : Glass Fish 4.0
  • Android App - Developed in Eclipse
  • Servlet - Developed in NetBeans

Answer

laalto picture laalto · Aug 21, 2013

To access your PC localhost from Android emulator, use 10.0.2.2 instead of 127.0.0.1. localhost or 127.0.0.1 refers to the emulated device itself, not the host the emulator is running on.

Reference: https://developer.android.com/studio/run/emulator-networking#networkaddresses

For Genymotion use: 10.0.3.2 instead of 10.0.2.2