Sub-account transfer API support

src/main/java/com/binance/api/client/BinanceApiRestClient.java

@@ -6,6 +6,7 @@
 import com.binance.api.client.domain.account.NewOrder;
 import com.binance.api.client.domain.account.NewOrderResponse;
 import com.binance.api.client.domain.account.Order;
+import com.binance.api.client.domain.account.SubAccountTransfer;
 import com.binance.api.client.domain.account.Trade;
 import com.binance.api.client.domain.account.TradeHistoryItem;
 import com.binance.api.client.domain.account.WithdrawHistory;
@@ -15,8 +16,8 @@
 import com.binance.api.client.domain.account.request.CancelOrderResponse;
 import com.binance.api.client.domain.account.request.OrderRequest;
 import com.binance.api.client.domain.account.request.OrderStatusRequest;
-import com.binance.api.client.domain.general.ExchangeInfo;
 import com.binance.api.client.domain.general.Asset;
+import com.binance.api.client.domain.general.ExchangeInfo;
 import com.binance.api.client.domain.market.AggTrade;
 import com.binance.api.client.domain.market.BookTicker;
 import com.binance.api.client.domain.market.Candlestick;
@@ -273,6 +274,17 @@ public interface BinanceApiRestClient {
    */
   DepositAddress getDepositAddress(String asset);
 
+  /**
+   * Transfer assets from/to main account and sub-account
+   * 
+   * @param fromEmail Sender sub-account email
+   * @param toEmail Recipient sub-account email
+   * @param asset Asset to transfer
+   * @param amount Amount to transfer
+   * @return SubAccountTransfer response
+   */
+  SubAccountTransfer subAccountTransfer(String fromEmail, String toEmail, String asset, String amount);
+
   // User stream endpoints
 
   /**

src/main/java/com/binance/api/client/domain/account/SubAccountTransfer.java

@@ -0,0 +1,38 @@
+package com.binance.api.client.domain.account;
+
+import org.apache.commons.lang3.builder.ToStringBuilder;
+
+import com.binance.api.client.constant.BinanceApiConstants;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SubAccountTransfer {
+
+    private boolean success;
+    private String txnId;
+
+    public boolean isSuccess() {
+        return success;
+    }
+
+    public void setSuccess(boolean success) {
+        this.success = success;
+    }
+
+    public String getTxnId() {
+        return txnId;
+    }
+
+    public void setTxnId(String txnId) {
+        this.txnId = txnId;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this, BinanceApiConstants.TO_STRING_BUILDER_STYLE)
+                .append("success", success)
+                .append("txnId", txnId)
+                .toString();
+    }
+
+}

src/main/java/com/binance/api/client/impl/BinanceApiRestClientImpl.java

@@ -207,6 +207,11 @@ public DepositAddress getDepositAddress(String asset) {
     return executeSync(binanceApiService.getDepositAddress(asset, BinanceApiConstants.DEFAULT_RECEIVING_WINDOW, System.currentTimeMillis()));
   }
 
+  @Override
+  public SubAccountTransfer subAccountTransfer(String fromEmail, String toEmail, String asset, String amount) {
+    return executeSync(binanceApiService.subAccountTransfer(fromEmail, toEmail, asset, amount, BinanceApiConstants.DEFAULT_RECEIVING_WINDOW, System.currentTimeMillis()));
+  }
+
   // User stream endpoints
 
   @Override

src/main/java/com/binance/api/client/impl/BinanceApiService.java

@@ -145,6 +145,10 @@ Call<WithdrawResult> withdraw(@Query("asset") String asset, @Query("address") St
     @GET("/wapi/v3/depositAddress.html")
     Call<DepositAddress> getDepositAddress(@Query("asset") String asset, @Query("recvWindow") Long recvWindow, @Query("timestamp") Long timestamp);
 
+    @Headers(BinanceApiConstants.ENDPOINT_SECURITY_TYPE_SIGNED_HEADER)
+    @POST("/wapi/v3/sub-account/transfer.html")
+    Call<SubAccountTransfer> subAccountTransfer(@Query("fromEmail") String fromEmail, @Query("toEmail") String toEmail, @Query("asset") String asset, @Query("amount") String amount, @Query("recvWindow") Long recvWindow, @Query("timestamp") Long timestamp);
+
     // User stream endpoints
 
     @Headers(BinanceApiConstants.ENDPOINT_SECURITY_TYPE_APIKEY_HEADER)