4 files changed, 9 insertions, 30 deletions
diff --git a/packages/connect/src/http_client.ts b/packages/connect/src/http_client.ts
index b90c2c35f..87d5c30be 100644
--- a/packages/connect/src/http_client.ts
+++ b/packages/connect/src/http_client.ts
@@ -151,7 +151,7 @@ export class HttpClient implements Client {
             params: requestOpts,
             payload: request,
         };
-        const responseJson = await this._requestAsync('/order_config', HttpRequestType.Post, httpRequestOpts);
+        const responseJson = await this._requestAsync('/order_config', HttpRequestType.Get, httpRequestOpts);
         const fees = relayerResponseJsonParsers.parseOrderConfigResponseJson(responseJson);
         return fees;
     }
diff --git a/packages/connect/src/types.ts b/packages/connect/src/types.ts
index 06ae732a5..b76af081c 100644
--- a/packages/connect/src/types.ts
+++ b/packages/connect/src/types.ts
@@ -126,12 +126,12 @@ export interface PaginatedCollection<T> {
 export interface OrderConfigRequest {
     makerAddress: string;
     takerAddress: string;
-    makerAssetAmount: string;
-    takerAssetAmount: string;
+    makerAssetAmount: BigNumber;
+    takerAssetAmount: BigNumber;
     makerAssetData: string;
     takerAssetData: string;
     exchangeAddress: string;
-    expirationTimeSeconds: string;
+    expirationTimeSeconds: BigNumber;
 }
 
 export interface OrderConfigResponse {
diff --git a/packages/connect/src/utils/relayer_response_json_parsers.ts b/packages/connect/src/utils/relayer_response_json_parsers.ts
index ebd877b70..bc31f231d 100644
--- a/packages/connect/src/utils/relayer_response_json_parsers.ts
+++ b/packages/connect/src/utils/relayer_response_json_parsers.ts
@@ -1,5 +1,6 @@
 import { assert } from '@0xproject/assert';
 import { schemas } from '@0xproject/json-schemas';
+import { orderParsingUtils } from '@0xproject/order-utils';
 
 import {
     APIOrder,
@@ -19,7 +20,7 @@ export const relayerResponseJsonParsers = {
     },
     parseAssetPairsItemsJson(json: any): AssetPairsItem[] {
         return json.map((assetDataPair: any) => {
-            return typeConverters.convertStringsFieldsToBigNumbers(assetDataPair, [
+            return orderParsingUtils.convertStringsFieldsToBigNumbers(assetDataPair, [
                 'assetDataA.minAmount',
                 'assetDataA.maxAmount',
                 'assetDataB.minAmount',
@@ -44,6 +45,6 @@ export const relayerResponseJsonParsers = {
     },
     parseOrderConfigResponseJson(json: any): OrderConfigResponse {
         assert.doesConformToSchema('orderConfigResponse', json, schemas.relayerApiOrderConfigResponseSchema);
-        return typeConverters.convertStringsFieldsToBigNumbers(json, ['makerFee', 'takerFee']);
+        return orderParsingUtils.convertStringsFieldsToBigNumbers(json, ['makerFee', 'takerFee']);
     },
 };
diff --git a/packages/connect/src/utils/type_converters.ts b/packages/connect/src/utils/type_converters.ts
index 4b211a0b2..d57ea00e5 100644
--- a/packages/connect/src/utils/type_converters.ts
+++ b/packages/connect/src/utils/type_converters.ts
@@ -1,4 +1,4 @@
-import { BigNumber } from '@0xproject/utils';
+import { orderParsingUtils } from '@0xproject/order-utils';
 import * as _ from 'lodash';
 
 import { APIOrder } from '../types';
@@ -21,28 +21,6 @@ export const typeConverters = {
         };
     },
     convertAPIOrderStringFieldsToBigNumber(apiOrder: any): APIOrder {
-        return { ...apiOrder, order: typeConverters.convertOrderStringFieldsToBigNumber(apiOrder.order) };
-    },
-    convertOrderStringFieldsToBigNumber(order: any): any {
-        return typeConverters.convertStringsFieldsToBigNumbers(order, [
-            'makerAssetAmount',
-            'takerAssetAmount',
-            'makerFee',
-            'takerFee',
-            'expirationTimeSeconds',
-            'salt',
-        ]);
-    },
-    convertStringsFieldsToBigNumbers(obj: any, fields: string[]): any {
-        const result = _.assign({}, obj);
-        _.each(fields, field => {
-            _.update(result, field, (value: string) => {
-                if (_.isUndefined(value)) {
-                    throw new Error(`Could not find field '${field}' while converting string fields to BigNumber.`);
-                }
-                return new BigNumber(value);
-            });
-        });
-        return result;
+        return { ...apiOrder, order: orderParsingUtils.convertOrderStringFieldsToBigNumber(apiOrder.order) };
     },
 };