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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.volley.toolbox;
     17 
     18 import com.android.volley.AuthFailureError;
     19 import com.android.volley.Header;
     20 import com.android.volley.Request;
     21 
     22 import org.apache.http.conn.ConnectTimeoutException;
     23 
     24 import java.io.IOException;
     25 import java.net.SocketTimeoutException;
     26 import java.util.ArrayList;
     27 import java.util.List;
     28 import java.util.Map;
     29 
     30 /**
     31  * {@link BaseHttpStack} implementation wrapping a {@link HttpStack}.
     32  *
     33  * <p>{@link BasicNetwork} uses this if it is provided a {@link HttpStack} at construction time,
     34  * allowing it to have one implementation based atop {@link BaseHttpStack}.
     35  */
     36 @SuppressWarnings("deprecation")
     37 class AdaptedHttpStack extends BaseHttpStack {
     38 
     39     private final HttpStack mHttpStack;
     40 
     41     AdaptedHttpStack(HttpStack httpStack) {
     42         mHttpStack = httpStack;
     43     }
     44 
     45     @Override
     46     public HttpResponse executeRequest(
     47             Request<?> request, Map<String, String> additionalHeaders)
     48             throws IOException, AuthFailureError {
     49         org.apache.http.HttpResponse apacheResp;
     50         try {
     51              apacheResp = mHttpStack.performRequest(request, additionalHeaders);
     52         } catch (ConnectTimeoutException e) {
     53             // BasicNetwork won't know that this exception should be retried like a timeout, since
     54             // it's an Apache-specific error, so wrap it in a standard timeout exception.
     55             throw new SocketTimeoutException(e.getMessage());
     56         }
     57 
     58         int statusCode = apacheResp.getStatusLine().getStatusCode();
     59 
     60         org.apache.http.Header[] headers = apacheResp.getAllHeaders();
     61         List<Header> headerList = new ArrayList<>(headers.length);
     62         for (org.apache.http.Header header : headers) {
     63             headerList.add(new Header(header.getName(), header.getValue()));
     64         }
     65 
     66         if (apacheResp.getEntity() == null) {
     67             return new HttpResponse(statusCode, headerList);
     68         }
     69 
     70         long contentLength = apacheResp.getEntity().getContentLength();
     71         if ((int) contentLength != contentLength) {
     72             throw new IOException("Response too large: " + contentLength);
     73         }
     74 
     75         return new HttpResponse(
     76                 statusCode,
     77                 headerList,
     78                 (int) apacheResp.getEntity().getContentLength(),
     79                 apacheResp.getEntity().getContent());
     80     }
     81 }
     82