1 /*
2  * Copyright (C) 2011 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 
17 package com.android.volley.toolbox;
18 
19 import com.android.volley.AuthFailureError;
20 import com.android.volley.Request;
21 
22 import org.apache.http.HttpResponse;
23 
24 import java.io.IOException;
25 import java.util.Map;
26 
27 /**
28  * An HTTP stack abstraction.
29  */
30 public interface HttpStack {
31     /**
32      * Performs an HTTP request with the given parameters.
33      *
34      * <p>A GET request is sent if request.getPostBody() == null. A POST request is sent otherwise,
35      * and the Content-Type header is set to request.getPostBodyContentType().</p>
36      *
37      * @param request the request to perform
38      * @param additionalHeaders additional headers to be sent together with
39      *         {@link Request#getHeaders()}
40      * @return the HTTP response
41      */
performRequest(Request<?> request, Map<String, String> additionalHeaders)42     public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
43         throws IOException, AuthFailureError;
44 
45 }
46