Returns details of the RPC server.
curl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"getrpcinfo","params":[]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/{
"active_commands": [
{ "method": "getrpcinfo", "duration": 0 }
],
"logpath": "/home/user/.bitcoin/debug.log"
}