ERROR GServerHandler - java.io.IOException: Connection reset by peer
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcher.read0(Native
java.io.IOException: Connection reset by peer
In my case, the problem was with PUT requests (GET and POST were passing successfully).
Communication went through VPN tunnel and ssh connection. And there was a firewall with default restrictions on PUT requests... PUT requests haven't been passing throughout, to the server...
Problem was solved after exception was added to the firewall for my IP address.