Function checkUsername

functions.go:1383–1432

Check if a username exists, return the registered address if so

(s string, h int64)

// Check if a username exists, return the registered address if so
func checkUsername(s string, h int64) (address string, err error) {
	if session.Offline {
		return
	}

	if h < 0 {
		address, err = engram.Disk.NameToAddress(s)
	} else {
		var params rpc.NameToAddress_Params
		var response *jrpc2.Response
		var result rpc.NameToAddress_Result

		rpc_client.WS, _, err = websocket.DefaultDialer.Dial("ws://"+session.Daemon+"/ws", nil)
		if err != nil {
			return
		}

		input_output := rwc.New(rpc_client.WS)
		rpc_client.RPC = jrpc2.NewClient(channel.RawJSON(input_output, input_output), nil)

		if rpc_client.RPC != nil {
			params.Name = s
			params.TopoHeight = h

			address = ""
			response, err = rpc_client.RPC.Call(context.Background(), "DERO.NameToAddress", params)

			rpc_client.WS.Close()
			rpc_client.RPC.Close()

			if err != nil {
				return
			}

			err = response.UnmarshalResult(&result)
			if err != nil {
				return
			}

			if result.Status != "OK" {
				err = errors.New("username does not exist")
				return
			}

			address = result.Address
		}
	}

	return
}

// Get the transaction fees to be paid
func getGasEstimate(gp rpc.GasEstimate_Params) (gas uint64, err error) {