We have a java web application which makes a soap request to salesforce to get some data. We moved to production today and we noticed that on some requests, we are getting a connection refused error message from salesforce on the java client. Some requests get through easily but some of them drop connections. We never experienced these on our sandboxes and we face them in production. Has anybody faced these issues and how do we debug them? Please let me know ..
The error message is:
org.apache.axis2.transport.http.HTTPSender sendViaPost Unable to sendViaPost to url[na15.salesforce.com/services/Soap/u/27.0/] java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method)