One of my customers used our code sample to try to access to DSS data via REST API, while it got connection reset error when attempting to establish connection. Please help to take a look at the screenshot below and advise how to find the cause.
It looks like the customer downloaded our DSS Java samples package, took the code from one of them (DSS2TokenProxy) and modified it while putting it in his own Maven / Spring environment. With his credentials he also hard coded the IP of a proxy server in the code.
If I run that code with the parameters that are in the file you sent I get a "Service Unavailable" error message, because the proxy IP set by your customer cannot be reached from my network.
If the customer has a proxy, but the proxy requires authentication (which is not included in that particular code sample), then it might result in a connection reset. I cannot guarantee what error message will be delivered because I don't have the infrastructure to test that.