HttpURLConnection: java.lang.IllegalStateException: Already connected

Question

I\'m trying to use HttpURLClient to send some POST data to a server using the HttpRestClient class shown below. When executing

conn.setDoInput(true)         


        

Answer 1

It may be a misleading exception. See this defect for Jersey-2 https://java.net/jira/browse/JERSEY-2729

The link has been updated: https://github.com/jersey/jersey/issues/3001

Basically the issue is jersey was throwing invalid exception. The real issue in my case was that the connection was refused from the server.