rpcuser=ryunishida
          rpcpassword=password

          HOST=localhost
          server=1
          txindex=1
          rpcport=18332
          testnet=3

curl --user ryunishida:password --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "getinfo", "params": [] }' -H 'content-type: text/plain;' http://127.0.0.1:18332/ -w '%{http_code}n'

curl: (7) Failed to connect to 127.0.0.1 port 18332: Connection refused