BREAKING CHANGE: getFee returns promise, express fee in XRP in instructions response, use rawRequest to start decoupling Remote from API

src/api/common/connection.js

@@ -26,6 +26,12 @@ class ConnectionError extends Error {
   }
 }
 
+class NotConnectedError extends ConnectionError {
+  constructor(message) {
+    super(message);
+  }
+}
+
 class DisconnectedError extends ConnectionError {
   constructor(message) {
     super(message);
@@ -50,6 +56,7 @@ class Connection extends EventEmitter {
     this._url = url;
     this._timeout = options.timeout || (20 * 1000);
     this._ws = null;
+    this._ledgerVersion = null;
     this._nextRequestID = 1;
   }
 
@@ -62,6 +69,9 @@ class Connection extends EventEmitter {
         }
         this.emit(data.id.toString(), data);
       } else if (isStreamMessageType(data.type)) {
+        if (data.type === 'ledgerClosed') {
+          this._ledgerVersion = Number(data.ledger_index);
+        }
         this.emit(data.type, data);
       } else if (data.type === undefined && data.error) {
         this.emit('error', data.error, data.error_message);  // e.g. slowDown
@@ -77,12 +87,34 @@ class Connection extends EventEmitter {
     return this._ws ? this._ws.readyState : WebSocket.CLOSED;
   }
 
+  get _shouldBeConnected() {
+    return this._ws !== null;
+  }
+
   _onUnexpectedClose() {
+    this._ledgerVersion = null;
     this.connect().then();
   }
 
+  _onOpen() {
+    const subscribeRequest = {
+      command: 'subscribe',
+      streams: ['ledger']
+    };
+    return this.request(subscribeRequest).then(() => {
+      const ledgerRequest = {
+        command: 'ledger',
+        ledger_index: 'validated'
+      };
+      return this.request(ledgerRequest).then(info => {
+        this._ledgerVersion = Number(info.ledger.ledger_index);
+        this.emit('connected');
+      });
+    });
+  }
+
   connect() {
-    return new Promise((resolve) => {
+    return new Promise((resolve, reject) => {
       if (this.state === WebSocket.OPEN) {
         resolve();
       } else if (this.state === WebSocket.CONNECTING) {
@@ -91,7 +123,7 @@ class Connection extends EventEmitter {
         this._ws = new WebSocket(this._url);
         this._ws.on('message', this._onMessage.bind(this));
         this._ws.once('close', () => this._onUnexpectedClose);
-        this._ws.once('open', resolve);
+        this._ws.once('open', () => this._onOpen().then(resolve, reject));
       }
     });
   }
@@ -104,7 +136,11 @@ class Connection extends EventEmitter {
         this._ws.once('close', resolve);
       } else {
         this._ws.removeListener('close', this._onUnexpectedClose);
-        this._ws.once('close', resolve);
+        this._ws.once('close', () => {
+          this._ws = null;
+          this._ledgerVersion = null;
+          resolve();
+        });
         this._ws.close();
       }
     });
@@ -114,6 +150,19 @@ class Connection extends EventEmitter {
     return this.disconnect().then(() => this.connect());
   }
 
+  getLedgerVersion() {
+    return new Promise((resolve, reject) => {
+      const ledgerVersion = this._ledgerVersion;
+      if (!this._shouldBeConnected) {
+        reject(new NotConnectedError());
+      } else if (this.state === WebSocket.OPEN && ledgerVersion !== null) {
+        resolve(ledgerVersion);
+      } else {
+        this.once('connected', () => resolve(this._ledgerVersion));
+      }
+    });
+  }
+
   _send(message) {
     return new Promise((resolve, reject) => {
       this._ws.send(message, undefined, (error, result) => {
@@ -131,13 +180,18 @@ class Connection extends EventEmitter {
       if (this.state === WebSocket.OPEN) {
         this._send(message).then(resolve, reject);
       } else {
-        this._ws.once('open', () => this._send(message).then(resolve, reject));
+        this._ws.once('connected', () =>
+          this._send(message).then(resolve, reject));
       }
     });
   }
 
   request(request, timeout) {
     return new Promise((resolve, reject) => {
+      if (!this._shouldBeConnected) {
+        reject(new NotConnectedError());
+      }
+
       let timer = null;
       const self = this;
       const id = this._nextRequestID;
@@ -179,6 +233,7 @@ class Connection extends EventEmitter {
 
       this._ws.once('close', onDisconnect);
 
+      // JSON.stringify automatically removes keys with value of 'undefined'
       const message = JSON.stringify(Object.assign({}, request, {id}));
 
       this._sendWhenReady(message).then(() => {

src/api/common/index.js

@@ -8,12 +8,14 @@ module.exports = {
   errors: require('./errors'),
   validate: require('./validate'),
   txFlags: require('./txflags').txFlags,
+  serverInfo: require('./serverinfo'),
   dropsToXrp: utils.dropsToXrp,
   xrpToDrops: utils.xrpToDrops,
   toRippledAmount: utils.toRippledAmount,
   generateAddress: utils.generateAddress,
   composeAsync: utils.composeAsync,
   wrapCatch: utils.wrapCatch,
+  removeUndefined: utils.removeUndefined,
   convertErrors: utils.convertErrors,
   convertExceptions: utils.convertExceptions,
   convertKeysFromSnakeCaseToCamelCase:

src/api/common/schemas/remote-options.json

@@ -4,6 +4,7 @@
   "type": "object",
   "properties": {
     "trace": {"type": "boolean"},
+    "feeCushion": {"$ref": "value"},
     "servers": {
       "type": "array",
       "items": {

src/api/common/serverinfo.js

@@ -0,0 +1,67 @@
+'use strict';
+const _ = require('lodash');
+const {RippledNetworkError} = require('./errors');
+const {promisify, convertKeysFromSnakeCaseToCamelCase} = require('./utils');
+
+export type GetServerInfoResponse = {
+  buildVersion: string,
+  completeLedgers: string,
+  hostid: string,
+  ioLatencyMs: number,
+  load?: {
+    jobTypes: Array<Object>,
+    threads: number
+  },
+  lastClose: {
+    convergeTimeS: number,
+    proposers: number
+  },
+  loadFactor: number,
+  peers: number,
+  pubkeyNode: string,
+  pubkeyValidator?: string,
+  serverState: string,
+  validatedLedger: {
+    age: number,
+    baseFeeXrp: number,
+    hash: string,
+    reserveBaseXrp: number,
+    reserveIncXrp: number,
+    seq: number
+  },
+  validationQuorum: number
+}
+
+function getServerInfoAsync(remote,
+  callback: (err: any, data?: GetServerInfoResponse) => void
+): void {
+  remote.rawRequest({command: 'server_info'}, (error, response) => {
+    if (error) {
+      const message = _.get(error, ['remote', 'error_message'], error.message);
+      callback(new RippledNetworkError(message));
+    } else {
+      callback(null, convertKeysFromSnakeCaseToCamelCase(response.info));
+    }
+  });
+}
+
+function getServerInfo(remote: Object): Promise<GetServerInfoResponse> {
+  return promisify(getServerInfoAsync)(remote);
+}
+
+function computeFeeFromServerInfo(cushion: number,
+    serverInfo: GetServerInfoResponse
+): number {
+  return (Number(serverInfo.validatedLedger.baseFeeXrp)
+       * Number(serverInfo.loadFactor) * cushion).toString();
+}
+
+function getFee(remote: Object, cushion: number) {
+  return getServerInfo(remote).then(
+    _.partial(computeFeeFromServerInfo, cushion));
+}
+
+module.exports = {
+  getServerInfo,
+  getFee
+};

src/api/common/utils.js

@@ -115,6 +115,10 @@ function promisify(asyncFunction: AsyncFunction): Function {
   return es6promisify(wrapCatch(asyncFunction));
 }
 
+function removeUndefined(obj: Object): Object {
+  return _.omit(obj, _.isUndefined);
+}
+
 module.exports = {
   core,
   dropsToXrp,
@@ -126,5 +130,6 @@ module.exports = {
   convertExceptions,
   convertErrors,
   convertKeysFromSnakeCaseToCamelCase,
-  promisify
+  promisify,
+  removeUndefined
 };

src/api/index.js

@@ -47,6 +47,7 @@ function RippleAPI(options: {}) {
     EventEmitter.call(this);
   }
   const _options = _.assign({}, options, {automatic_resubmission: false});
+  this._feeCushion = _options.feeCushion || 1.2;
   this.remote = new common.core.Remote(_options);
   this.remote.on('ledger_closed', message => {
     this.emit('ledgerClosed', server.formatLedgerClose(message));

src/api/ledger/accountinfo.js

@@ -2,10 +2,7 @@
 
 'use strict';
 const utils = require('./utils');
-const removeUndefined = require('./parse/utils').removeUndefined;
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors, removeUndefined} = utils.common;
 
 type AccountData = {
   Sequence: number,
@@ -62,11 +59,12 @@ function getAccountInfoAsync(account: string, options: AccountInfoOptions,
   validate.getAccountInfoOptions(options);
 
   const request = {
+    command: 'account_info',
     account: account,
-    ledger: options.ledgerVersion || 'validated'
+    ledger_index: options.ledgerVersion || 'validated'
   };
 
-  this.remote.requestAccountInfo(request,
+  this.remote.rawRequest(request,
     composeAsync(formatAccountInfo, convertErrors(callback)));
 }
 

src/api/ledger/balance-sheet.js

@@ -3,9 +3,7 @@
 
 const _ = require('lodash');
 const utils = require('./utils');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 import type {Amount} from '../common/types.js';
 
 type BalanceSheetOptions = {
@@ -55,12 +53,13 @@ function getBalanceSheetAsync(address: string, options: BalanceSheetOptions,
   validate.address(address);
   validate.getBalanceSheetOptions(options);
 
-  const requestOptions = Object.assign({}, {
+  const request = {
+    command: 'gateway_balances',
     account: address,
     strict: true,
     hotwallet: options.excludeAddresses,
-    ledger: options.ledgerVersion
-  });
+    ledger_index: options.ledgerVersion
+  };
 
   const requestCallback = composeAsync(
     formatBalanceSheet, convertErrors(callback));
@@ -71,11 +70,11 @@ function getBalanceSheetAsync(address: string, options: BalanceSheetOptions,
       return;
     }
 
-    if (_.isUndefined(requestOptions.ledger)) {
-      requestOptions.ledger = ledgerVersion;
+    if (_.isUndefined(request.ledger_index)) {
+      request.ledger_index = ledgerVersion;
     }
 
-    this.remote.requestGatewayBalances(requestOptions, requestCallback);
+    this.remote.rawRequest(request, requestCallback);
   });
 }
 

src/api/ledger/balances.js

@@ -4,11 +4,8 @@ const _ = require('lodash');
 const async = require('async');
 const utils = require('./utils');
 const getTrustlines = require('./trustlines');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 import type {Remote, GetLedgerSequenceCallback} from '../../core/remote';
-
 import type {TrustlinesOptions, Trustline} from './trustlines-types.js';
 
 

src/api/ledger/ledger.js

@@ -1,9 +1,7 @@
 /* @flow */
 'use strict';
 const utils = require('./utils');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 const parseLedger = require('./parse/ledger');
 import type {GetLedger} from './types.js';
 
@@ -19,13 +17,14 @@ function getLedgerAsync(options: LedgerOptions, callback) {
   validate.getLedgerOptions(options);
 
   const request = {
-    ledger: options.ledgerVersion || 'validated',
+    command: 'ledger',
+    ledger_index: options.ledgerVersion || 'validated',
     expand: options.includeAllData,
     transactions: options.includeTransactions,
     accounts: options.includeState
   };
 
-  this.remote.requestLedger(request,
+  this.remote.rawRequest(request,
     composeAsync(response => parseLedger(response.ledger),
     convertErrors(callback)));
 }

src/api/ledger/orderbook.js

@@ -3,9 +3,7 @@
 const _ = require('lodash');
 const async = require('async');
 const utils = require('./utils');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 const parseOrderbookOrder = require('./parse/orderbook-order');
 import type {Remote} from '../../core/remote';
 import type {OrdersOptions, OrderSpecification} from './types.js';
@@ -42,10 +40,11 @@ function getBookOffers(remote: Remote, account: string,
     ledgerVersion?: number, limit?: number, takerGets: Issue,
     takerPays: Issue, callback
 ) {
-  remote.requestBookOffers(utils.renameCounterpartyToIssuerInOrder({
+  remote.rawRequest(utils.renameCounterpartyToIssuerInOrder({
+    command: 'book_offers',
     taker_gets: takerGets,
     taker_pays: takerPays,
-    ledger: ledgerVersion || 'validated',
+    ledger_index: ledgerVersion || 'validated',
     limit: limit,
     taker: account
   }), composeAsync(data => data.offers, convertErrors(callback)));

src/api/ledger/orders.js

@@ -3,9 +3,7 @@
 const _ = require('lodash');
 const async = require('async');
 const utils = require('./utils');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 const parseAccountOrder = require('./parse/account-order');
 import type {Remote} from '../../core/remote';
 import type {OrdersOptions, Order} from './types.js';
@@ -15,11 +13,12 @@ type GetOrders = Array<Order>
 function requestAccountOffers(remote: Remote, address: string,
   ledgerVersion: number, marker: string, limit: number, callback
 ) {
-  remote.requestAccountOffers({
+  remote.rawRequest({
+    command: 'account_offers',
     account: address,
     marker: marker,
     limit: utils.clamp(limit, 10, 400),
-    ledger: ledgerVersion
+    ledger_index: ledgerVersion
   },
   composeAsync((data) => ({
     marker: data.marker,

src/api/ledger/parse/utils.js

@@ -22,10 +22,6 @@ function parseTimestamp(tx: {date: string}): string | void {
   return tx.date ? (new Date(toTimestamp(tx.date))).toISOString() : undefined;
 }
 
-function removeUndefined(obj: Object): Object {
-  return _.omit(obj, _.isUndefined);
-}
-
 function removeEmptyCounterparty(amount) {
   if (amount.counterparty === '') {
     delete amount.counterparty;
@@ -76,7 +72,7 @@ function parseMemos(tx: Object): ?Array<Object> {
     return undefined;
   }
   return tx.Memos.map((m) => {
-    return removeUndefined({
+    return utils.common.removeUndefined({
       type: m.Memo.parsed_memo_type || hexToString(m.Memo.MemoType),
       format: m.Memo.parsed_memo_format || hexToString(m.Memo.MemoFormat),
       data: m.Memo.parsed_memo_data || hexToString(m.Memo.MemoData)
@@ -87,10 +83,10 @@ function parseMemos(tx: Object): ?Array<Object> {
 module.exports = {
   parseOutcome,
   parseMemos,
-  removeUndefined,
   adjustQualityForXRP,
   dropsToXrp: utils.common.dropsToXrp,
   constants: utils.common.constants,
   txFlags: utils.common.txFlags,
-  core: utils.common.core
+  core: utils.common.core,
+  removeUndefined: utils.common.removeUndefined
 };

src/api/ledger/pathfind.js

@@ -5,12 +5,9 @@ const async = require('async');
 const BigNumber = require('bignumber.js');
 const utils = require('./utils');
 const parsePathfind = require('./parse/pathfind');
-const validate = utils.common.validate;
+const {validate, composeAsync, convertErrors, toRippledAmount} = utils.common;
 const NotFoundError = utils.common.errors.NotFoundError;
 const ValidationError = utils.common.errors.ValidationError;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
-const toRippledAmount = utils.common.toRippledAmount;
 import type {Remote} from '../../core/remote';
 import type {RippledAmount} from '../common/types.js';
 import type {GetPaths, PathFind, PathFindParams,

src/api/ledger/settings.js

@@ -2,11 +2,9 @@
 'use strict';
 const _ = require('lodash');
 const utils = require('./utils');
-const validate = utils.common.validate;
 const parseFields = require('./parse/fields');
-const composeAsync = utils.common.composeAsync;
+const {validate, composeAsync, convertErrors} = utils.common;
 const AccountFlags = utils.common.constants.AccountFlags;
-const convertErrors = utils.common.convertErrors;
 
 type SettingsOptions = {
   ledgerVersion?: number
@@ -55,11 +53,12 @@ function getSettingsAsync(account: string, options: SettingsOptions, callback) {
   validate.getSettingsOptions(options);
 
   const request = {
+    command: 'account_info',
     account: account,
-    ledger: options.ledgerVersion || 'validated'
+    ledger_index: options.ledgerVersion || 'validated'
   };
 
-  this.remote.requestAccountInfo(request,
+  this.remote.rawRequest(request,
     composeAsync(formatSettings, convertErrors(callback)));
 }
 

src/api/ledger/transaction.js

@@ -4,9 +4,7 @@ const _ = require('lodash');
 const async = require('async');
 const utils = require('./utils');
 const parseTransaction = require('./parse/transaction');
-const validate = utils.common.validate;
-const errors = utils.common.errors;
-const convertErrors = utils.common.convertErrors;
+const {validate, convertErrors, errors} = utils.common;
 const RippleError = require('../../core/rippleerror').RippleError;
 
 import type {Remote} from '../../core/remote';
@@ -27,7 +25,12 @@ function attachTransactionDate(remote: Remote, tx: Object,
     return;
   }
 
-  remote.requestLedger(tx.ledger_index, (error, data) => {
+  const request = {
+    command: 'ledger',
+    ledger_index: tx.ledger_index
+  };
+
+  remote.rawRequest(request, (error, data) => {
     if (error) {
       callback(new errors.NotFoundError('Transaction ledger not found'));
     } else if (typeof data.ledger.close_time === 'number') {
@@ -98,8 +101,8 @@ function getTransactionAsync(identifier: string, options: TransactionOptions,
   }
 
   async.waterfall([
-    _.partial(remote.requestTx.bind(remote),
-      {hash: identifier, binary: false}),
+    _.partial(remote.rawRequest.bind(remote),
+      {command: 'tx', transaction: identifier, binary: false}),
     _.partial(attachTransactionDate, remote)
   ], maxLedgerGetter.bind(this));
 }

src/api/ledger/transactions.js

@@ -2,15 +2,13 @@
 /* eslint-disable max-params */
 'use strict';
 const _ = require('lodash');
+const binary = require('ripple-binary-codec');
+const {computeTransactionHash} = require('ripple-hashes');
 const utils = require('./utils');
 const parseTransaction = require('./parse/transaction');
 const getTransaction = require('./transaction');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
-
+const {validate, composeAsync, convertErrors} = utils.common;
 import type {Remote} from '../../core/remote';
-
 import type {TransactionType} from './transaction-types';
 
 
@@ -32,11 +30,22 @@ type GetTransactionsResponse = Array<TransactionType>
 
 type CallbackType = (err?: ?Error, data?: GetTransactionsResponse) => void
 
+function parseBinaryTransaction(transaction) {
+  const tx = binary.decode(transaction.tx_blob);
+  tx.hash = computeTransactionHash(tx);
+  tx.ledger_index = transaction.ledger_index;
+  return {
+    tx: tx,
+    meta: binary.decode(transaction.meta),
+    validated: transaction.validated
+  };
+}
+
 function parseAccountTxTransaction(tx) {
+  const _tx = tx.tx_blob ? parseBinaryTransaction(tx) : tx;
   // rippled uses a different response format for 'account_tx' than 'tx'
-  tx.tx.meta = tx.meta;
-  tx.tx.validated = tx.validated;
-  return parseTransaction(tx.tx);
+  return parseTransaction(_.assign({}, _tx.tx,
+    {meta: _tx.meta, validated: _tx.validated}));
 }
 
 function counterpartyFilter(filters, tx: TransactionType) {
@@ -97,7 +106,8 @@ function formatPartialResponse(address: string,
 function getAccountTx(remote: Remote, address: string,
   options: TransactionsOptions, marker: string, limit: number, callback
 ) {
-  const params = {
+  const request = {
+    command: 'account_tx',
     account: address,
     // -1 is equivalent to earliest available validated ledger
     ledger_index_min: options.minLedgerVersion || -1,
@@ -109,7 +119,7 @@ function getAccountTx(remote: Remote, address: string,
     marker: marker
   };
 
-  remote.requestAccountTx(params,
+  remote.rawRequest(request,
     composeAsync(_.partial(formatPartialResponse, address, options),
       convertErrors(callback)));
 }

src/api/ledger/trustlines.js

@@ -3,9 +3,7 @@
 const _ = require('lodash');
 const async = require('async');
 const utils = require('./utils');
-const validate = utils.common.validate;
-const composeAsync = utils.common.composeAsync;
-const convertErrors = utils.common.convertErrors;
+const {validate, composeAsync, convertErrors} = utils.common;
 const parseAccountTrustline = require('./parse/account-trustline');
 
 import type {Remote} from '../../core/remote';
@@ -29,15 +27,16 @@ function formatResponse(options: TrustlinesOptions, data) {
 function getAccountLines(remote: Remote, address: string, ledgerVersion: number,
   options: TrustlinesOptions, marker: string, limit: number, callback
 ) {
-  const requestOptions = {
+  const request = {
+    command: 'account_lines',
     account: address,
-    ledger: ledgerVersion,
+    ledger_index: ledgerVersion,
     marker: marker,
     limit: utils.clamp(limit, 10, 400),
     peer: options.counterparty
   };
 
-  remote.requestAccountLines(requestOptions,
+  remote.rawRequest(request,
     composeAsync(_.partial(formatResponse, options),
       convertErrors(callback)));
 }

src/api/ledger/utils.js

@@ -26,7 +26,12 @@ function clamp(value: number, min: number, max: number): number {
 function getXRPBalance(remote: Remote, address: string, ledgerVersion?: number,
                        callback: Callback
 ): void {
-  remote.requestAccountInfo({account: address, ledger: ledgerVersion},
+  const request = {
+    command: 'account_info',
+    account: address,
+    ledger_index: ledgerVersion
+  };
+  remote.rawRequest(request,
     composeAsync((data) => dropsToXrp(data.account_data.Balance), callback));
 }
 

src/api/server/server.js

@@ -1,66 +1,13 @@
 /* @flow */
-
 'use strict';
-
-const _ = require('lodash');
 const common = require('../common');
-
-type GetServerInfoResponse = {
-  buildVersion: string,
-  completeLedgers: string,
-  hostid: string,
-  ioLatencyMs: number,
-  load?: {
-    jobTypes: Array<Object>,
-    threads: number
-  },
-  lastClose: {
-    convergeTimeS: number,
-    proposers: number
-  },
-  loadFactor: number,
-  peers: number,
-  pubkeyNode: string,
-  pubkeyValidator?: string,
-  serverState: string,
-  validatedLedger: {
-    age: number,
-    baseFeeXrp: number,
-    hash: string,
-    reserveBaseXrp: number,
-    reserveIncXrp: number,
-    seq: number
-  },
-  validationQuorum: number
-}
+import type {GetServerInfoResponse} from '../common/serverinfo';
 
 function isConnected(): boolean {
   const server = this.remote.getServer();
   return Boolean(server && server.isConnected());
 }
 
-function getServerInfoAsync(
-  callback: (err: any, data?: GetServerInfoResponse) => void
-): void {
-  this.remote.requestServerInfo((error, response) => {
-    if (error) {
-      const message = _.get(error, ['remote', 'error_message'], error.message);
-      callback(new common.errors.RippledNetworkError(message));
-    } else {
-      callback(null,
-        common.convertKeysFromSnakeCaseToCamelCase(response.info));
-    }
-  });
-}
-
-function getFee(): ?number {
-  if (!this.remote.getConnectedServers().length) {
-    throw new common.errors.RippledNetworkError('No servers available.');
-  }
-  const fee = this.remote.createTransaction()._computeFee();
-  return fee === undefined ? undefined : common.dropsToXrp(fee);
-}
-
 function getLedgerVersion(): Promise<number> {
   return common.promisify(this.remote.getLedgerSequence).call(this.remote);
 }
@@ -86,7 +33,12 @@ function disconnect(): Promise<void> {
 }
 
 function getServerInfo(): Promise<GetServerInfoResponse> {
-  return common.promisify(getServerInfoAsync).call(this);
+  return common.serverInfo.getServerInfo(this.remote);
+}
+
+function getFee(): Promise<number> {
+  const cushion = this._feeCushion || 1.2;
+  return common.serverInfo.getFee(this.remote, cushion);
 }
 
 function rippleTimeToISO8601(rippleTime: string): string {

src/api/transaction/order.js

@@ -41,7 +41,7 @@ function prepareOrderAsync(account: string, order: Order,
     instructions: Instructions, callback
 ) {
   const txJSON = createOrderTransaction(account, order);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareOrder(account: string, order: Order,

src/api/transaction/ordercancellation.js

@@ -21,7 +21,7 @@ function prepareOrderCancellationAsync(account: string, sequence: number,
   instructions: Instructions, callback
 ) {
   const txJSON = createOrderCancellationTransaction(account, sequence);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareOrderCancellation(account: string, sequence: number,

src/api/transaction/payment.js

@@ -145,7 +145,7 @@ function preparePaymentAsync(account: string, payment: Payment,
     instructions: Instructions, callback
 ) {
   const txJSON = createPaymentTransaction(account, payment);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function preparePayment(account: string, payment: Payment,

src/api/transaction/settings.js

@@ -99,7 +99,7 @@ function prepareSettingsAsync(account: string, settings: Settings,
     instructions: Instructions, callback
 ) {
   const txJSON = createSettingsTransaction(account, settings);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareSettings(account: string, settings: Object,

src/api/transaction/suspended-payment-cancellation.js

@@ -35,7 +35,7 @@ function prepareSuspendedPaymentCancellationAsync(account: string,
 ) {
   const txJSON =
     createSuspendedPaymentCancellationTransaction(account, payment);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareSuspendedPaymentCancellation(account: string,

src/api/transaction/suspended-payment-creation.js

@@ -54,7 +54,7 @@ function prepareSuspendedPaymentCreationAsync(account: string,
     payment: SuspendedPaymentCreation, instructions: Instructions, callback
 ) {
   const txJSON = createSuspendedPaymentCreationTransaction(account, payment);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareSuspendedPaymentCreation(account: string,

src/api/transaction/suspended-payment-execution.js

@@ -47,7 +47,7 @@ function prepareSuspendedPaymentExecutionAsync(account: string,
     payment: SuspendedPaymentExecution, instructions: Instructions, callback
 ) {
   const txJSON = createSuspendedPaymentExecutionTransaction(account, payment);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareSuspendedPaymentExecution(account: string,

src/api/transaction/trustline.js

@@ -54,7 +54,7 @@ function prepareTrustlineAsync(account: string,
     trustline: TrustLineSpecification, instructions: Instructions, callback
 ) {
   const txJSON = createTrustlineTransaction(account, trustline);
-  utils.prepareTransaction(txJSON, this.remote, instructions, callback);
+  utils.prepareTransaction(txJSON, this, instructions, callback);
 }
 
 function prepareTrustline(account: string,

src/api/transaction/utils.js

@@ -4,25 +4,16 @@ const _ = require('lodash');
 const async = require('async');
 const BigNumber = require('bignumber.js');
 const common = require('../common');
-const composeAsync = common.composeAsync;
 const txFlags = common.txFlags;
-import type {Remote} from '../../core/remote';
 import type {Instructions} from './types.js';
 
 function removeUndefined(obj: Object): Object {
   return _.omit(obj, _.isUndefined);
 }
 
-function getFeeDrops(remote: Remote, callback) {
-  const feeUnits = 10; // all transactions currently have a fee of 10 fee units
-  remote.feeTxAsync(feeUnits, (err, data) => {
-    callback(err, data ? data.to_text() : undefined);
-  });
-}
-
 function formatPrepareResponse(txJSON: Object): Object {
   const instructions = {
-    fee: txJSON.Fee,
+    fee: common.dropsToXrp(txJSON.Fee),
     sequence: txJSON.Sequence,
     maxLedgerVersion: txJSON.LastLedgerSequence
   };
@@ -42,7 +33,7 @@ function setCanonicalFlag(txJSON) {
 
 type Callback = (err: ?(typeof Error),
                  data: {txJSON: string, instructions: Instructions}) => void;
-function prepareTransaction(txJSON: Object, remote: Remote,
+function prepareTransaction(txJSON: Object, api: Object,
     instructions: Instructions, callback: Callback
 ): void {
   common.validate.instructions(instructions);
@@ -57,7 +48,7 @@ function prepareTransaction(txJSON: Object, remote: Remote,
     } else {
       const offset = instructions.maxLedgerVersionOffset !== undefined ?
         instructions.maxLedgerVersionOffset : 3;
-      remote.getLedgerSequence((error, ledgerVersion) => {
+      api.remote.getLedgerSequence((error, ledgerVersion) => {
         txJSON.LastLedgerSequence = ledgerVersion + offset;
         callback_(error);
       });
@@ -69,14 +60,16 @@ function prepareTransaction(txJSON: Object, remote: Remote,
       txJSON.Fee = common.xrpToDrops(instructions.fee);
       callback_();
     } else {
-      getFeeDrops(remote, composeAsync((serverFeeDrops) => {
+      common.serverInfo.getFee(api.remote, api._feeCushion).then(fee => {
+        const feeDrops = common.xrpToDrops(fee);
         if (instructions.maxFee !== undefined) {
           const maxFeeDrops = common.xrpToDrops(instructions.maxFee);
-          txJSON.Fee = BigNumber.min(serverFeeDrops, maxFeeDrops).toString();
+          txJSON.Fee = BigNumber.min(feeDrops, maxFeeDrops).toString();
         } else {
-          txJSON.Fee = serverFeeDrops;
+          txJSON.Fee = feeDrops;
         }
-      }, callback_));
+        callback_();
+      });
     }
   }
 
@@ -85,8 +78,12 @@ function prepareTransaction(txJSON: Object, remote: Remote,
       txJSON.Sequence = instructions.sequence;
       callback_(null, formatPrepareResponse(txJSON));
     } else {
-      remote.findAccount(account).getNextSequence(function(error, sequence) {
-        txJSON.Sequence = sequence;
+      const request = {
+        command: 'account_info',
+        account: account
+      };
+      api.remote.rawRequest(request, function(error, response) {
+        txJSON.Sequence = response.account_data.Sequence;
         callback_(error, formatPrepareResponse(txJSON));
       });
     }

src/core/remote.js

@@ -810,6 +810,12 @@ Remote.prototype.request = function(request) {
   }
 };
 
+Remote.prototype.rawRequest = function(message, callback) {
+  const request = new Request(this, message.command);
+  _.assign(request.message, _.omit(message, _.isUndefined));
+  request.request(callback);
+};
+
 /**
  * Request ping
  *

test/api-test.js

@@ -607,7 +607,9 @@ describe('RippleAPI', function() {
   });
 
   it('getFee', function() {
-    assert.strictEqual(this.api.getFee(), '0.000012');
+    return this.api.getFee().then(fee => {
+      assert.strictEqual(fee, '0.000012');
+    });
   });
 
   it('disconnect & isConnected', function() {

test/fixtures/api/requests/sign.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Domain\":\"726970706C652E636F6D\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-order-cancellation.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"OfferCancel\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"OfferSequence\":23,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-order-sell.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2148139008,\"TransactionType\":\"OfferCreate\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"TakerGets\":{\"value\":\"10.1\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"TakerPays\":\"2000000\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-order.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147614720,\"TransactionType\":\"OfferCreate\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"TakerGets\":\"2000000\",\"TakerPays\":{\"value\":\"10.1\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-payment-all-options.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147811328,\"TransactionType\":\"Payment\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Destination\":\"rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo\",\"Amount\":\"10000\",\"InvoiceID\":\"A98FD36C17BE2B8511AD36DC335478E7E89F06262949F36EB88E2D683BBCC50A\",\"SourceTag\":14,\"DestinationTag\":58,\"Memos\":[{\"Memo\":{\"MemoType\":\"74657374\",\"MemoFormat\":\"706C61696E2F74657874\",\"MemoData\":\"7465787465642064617461\"}}],\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-payment-min-amount.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147614720,\"TransactionType\":\"Payment\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Destination\":\"ra5nK24KXen9AHvsdFTKHSANinZseWnPcX\",\"Amount\":{\"value\":\"9999999999999999e80\",\"currency\":\"USD\",\"issuer\":\"ra5nK24KXen9AHvsdFTKHSANinZseWnPcX\"},\"SendMax\":{\"value\":\"5\",\"currency\":\"USD\",\"issuer\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\"},\"DeliverMin\":{\"value\":\"9999999999999999e80\",\"currency\":\"USD\",\"issuer\":\"ra5nK24KXen9AHvsdFTKHSANinZseWnPcX\"},\"Paths\":[[{\"account\":\"rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B\"},{\"currency\":\"XRP\"},{\"issuer\":\"rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q\",\"currency\":\"USD\"},{\"account\":\"rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q\"},{\"account\":\"rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn\"}],[{\"account\":\"rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B\"},{\"currency\":\"XRP\"},{\"issuer\":\"rfsEoNBUBbvkf4jPcFe2u9CyaQagLVHGfP\",\"currency\":\"USD\"},{\"account\":\"rfsEoNBUBbvkf4jPcFe2u9CyaQagLVHGfP\"},{\"account\":\"rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q\"}]],\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-payment-no-counterparty.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147942400,\"TransactionType\":\"Payment\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Destination\":\"rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo\",\"Amount\":{\"value\":\"0.01\",\"currency\":\"LTC\",\"issuer\":\"rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo\"},\"InvoiceID\":\"A98FD36C17BE2B8511AD36DC335478E7E89F06262949F36EB88E2D683BBCC50A\",\"SourceTag\":14,\"DestinationTag\":58,\"Memos\":[{\"Memo\":{\"MemoType\":\"74657374\",\"MemoFormat\":\"706C61696E2F74657874\",\"MemoData\":\"7465787465642064617461\"}}],\"SendMax\":{\"value\":\"0.01\",\"currency\":\"USD\",\"issuer\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\"},\"Paths\":[[{\"account\":\"rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q\",\"issuer\":\"rMwjYedjc7qqtKYVLiAccJSmCwih4LnE2q\",\"currency\":\"USD\"},{\"issuer\":\"rfYv1TXnwgDDK4WQNbFALykYuEBnrR4pDX\",\"currency\":\"LTC\"},{\"account\":\"rfYv1TXnwgDDK4WQNbFALykYuEBnrR4pDX\",\"issuer\":\"rfYv1TXnwgDDK4WQNbFALykYuEBnrR4pDX\",\"currency\":\"LTC\"}]],\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-payment.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"Payment\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Destination\":\"rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo\",\"Amount\":{\"value\":\"0.01\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"SendMax\":{\"value\":\"0.01\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings-field-clear.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"WalletLocator\":\"0\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings-flag-clear.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"ClearFlag\":1,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings-flag-set.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"SetFlag\":1,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings-regular-key.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"SetRegularKey\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"RegularKey\":\"rAR8rR8sUkBoCZFawhkWzY4Y5YoyuznwD\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings-set-transfer-rate.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"TransferRate\":1000000000,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-settings.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"AccountSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Domain\":\"726970706C652E636F6D\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-suspended-payment-cancellation.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"SuspendedPaymentCancel\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Owner\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"OfferSequence\":1234,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-suspended-payment-creation.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"SuspendedPaymentCreate\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Destination\":\"rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo\",\"Amount\":{\"value\":\"0.01\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"CancelAfter\":494009529,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-suspended-payment-execution.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"SuspendedPaymentFinish\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"Owner\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"OfferSequence\":1234,\"Method\":1,\"Digest\":\"8F434346648F6B96DF89DDA901C5176B10A6D83961DD3C1AC88B59B2DC327AA4\",\"Proof\":\"7768617465766572\",\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-trustline-simple.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2147483648,\"TransactionType\":\"TrustSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"LimitAmount\":{\"value\":\"0.1\",\"currency\":\"BTC\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/fixtures/api/responses/prepare-trustline.json

@@ -1,7 +1,7 @@
 {
   "txJSON": "{\"Flags\":2149711872,\"TransactionType\":\"TrustSet\",\"Account\":\"r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59\",\"LimitAmount\":{\"value\":\"10000\",\"currency\":\"USD\",\"issuer\":\"rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM\"},\"QualityIn\":910000000,\"QualityOut\":870000000,\"LastLedgerSequence\":8820051,\"Fee\":\"12\",\"Sequence\":23}",
   "instructions": {
-    "fee": "12",
+    "fee": "0.000012",
     "sequence": 23,
     "maxLedgerVersion": 8820051
   }

test/integration/connection-test.js

@@ -40,7 +40,11 @@ function main() {
       makeRequest(connection, request4)
     ]).then(() => {
       console.log('Done');
-      process.exit();
+    });
+    connection.getLedgerVersion().then(console.log);
+    connection.on('ledgerClosed', ledger => {
+      console.log(ledger);
+      connection.getLedgerVersion().then(console.log);
     });
   });
 }

test/integration/integration-test.js

@@ -176,11 +176,12 @@ describe('integration tests', function() {
 
 
   it('getFee', function() {
-    const fee = this.api.getFee();
+    return this.api.getFee().then(fee => {
       assert.strictEqual(typeof fee, 'string');
       assert(!isNaN(Number(fee)));
       assert(parseFloat(fee) === Number(fee));
     });
+  });
 
 
   it('getLedgerVersion', function() {