Java tutorial
/** * The MIT License (MIT) * * Copyright (c) 2015 Circle Internet Financial * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.phattn.vnexpressnews.io; import com.android.volley.AuthFailureError; import com.android.volley.Request; import com.android.volley.toolbox.HttpStack; import com.squareup.okhttp.Call; import com.squareup.okhttp.Headers; import com.squareup.okhttp.MediaType; import com.squareup.okhttp.OkHttpClient; import com.squareup.okhttp.Protocol; import com.squareup.okhttp.RequestBody; import com.squareup.okhttp.Response; import com.squareup.okhttp.ResponseBody; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.ProtocolVersion; import org.apache.http.StatusLine; import org.apache.http.entity.BasicHttpEntity; import org.apache.http.message.BasicHeader; import org.apache.http.message.BasicHttpResponse; import org.apache.http.message.BasicStatusLine; import java.io.IOException; import java.util.Map; import java.util.concurrent.TimeUnit; /** * OkHtttp backed {@link com.android.volley.toolbox.HttpStack} that does not * use okhttp-urlconnection */ public class OkHttpStack implements HttpStack { private final OkHttpClient mClient; public OkHttpStack(OkHttpClient client) { mClient = client; } @Override public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders) throws IOException, AuthFailureError { OkHttpClient client = mClient.clone(); int timeoutMs = request.getTimeoutMs(); client.setConnectTimeout(timeoutMs, TimeUnit.MILLISECONDS); client.setReadTimeout(timeoutMs, TimeUnit.MILLISECONDS); client.setWriteTimeout(timeoutMs, TimeUnit.MILLISECONDS); com.squareup.okhttp.Request.Builder okHttpRequestBuilder = new com.squareup.okhttp.Request.Builder(); okHttpRequestBuilder.url(request.getUrl()); Map<String, String> headers = request.getHeaders(); for (final String name : headers.keySet()) { okHttpRequestBuilder.addHeader(name, headers.get(name)); } for (final String name : additionalHeaders.keySet()) { okHttpRequestBuilder.addHeader(name, additionalHeaders.get(name)); } setConnectionParametersForRequest(okHttpRequestBuilder, request); com.squareup.okhttp.Request okHttpRequest = okHttpRequestBuilder.build(); Call okHttpCall = client.newCall(okHttpRequest); Response okHttpResponse = okHttpCall.execute(); StatusLine responseStatus = new BasicStatusLine(parseProtocol(okHttpResponse.protocol()), okHttpResponse.code(), okHttpResponse.message()); BasicHttpResponse response = new BasicHttpResponse(responseStatus); response.setEntity(entityFromOkHttpResponse(okHttpResponse)); Headers responseHeaders = okHttpResponse.headers(); for (int i = 0, length = responseHeaders.size(); i < length; i++) { final String name = responseHeaders.name(i); final String value = responseHeaders.value(i); if (name != null) { response.addHeader(new BasicHeader(name, value)); } } return response; } private static HttpEntity entityFromOkHttpResponse(Response response) throws IOException { BasicHttpEntity entity = new BasicHttpEntity(); ResponseBody body = response.body(); entity.setContent(body.byteStream()); entity.setContentLength(body.contentLength()); entity.setContentEncoding(response.header("Content-Encoding")); if (body.contentType() != null) { entity.setContentType(body.contentType().type()); } return entity; } @SuppressWarnings("deprecation") private static void setConnectionParametersForRequest(com.squareup.okhttp.Request.Builder builder, Request<?> request) throws IOException, AuthFailureError { switch (request.getMethod()) { case Request.Method.DEPRECATED_GET_OR_POST: // Ensure backwards compatibility. Volley assumes a request with a null body is a GET byte[] postBody = request.getPostBody(); if (postBody != null) { builder.post(RequestBody.create(MediaType.parse(request.getPostBodyContentType()), postBody)); } break; case Request.Method.GET: builder.get(); break; case Request.Method.DELETE: builder.delete(); break; case Request.Method.POST: builder.post(createRequestBody(request)); break; case Request.Method.HEAD: builder.head(); break; case Request.Method.OPTIONS: builder.method("OPTIONS", null); break; case Request.Method.TRACE: builder.method("TRACE", null); break; case Request.Method.PATCH: builder.patch(createRequestBody(request)); break; default: throw new IllegalStateException("Unknown method type."); } } private static ProtocolVersion parseProtocol(final Protocol p) { switch (p) { case HTTP_1_0: return new ProtocolVersion("HTTP", 1, 0); case HTTP_1_1: return new ProtocolVersion("HTTP", 1, 1); case SPDY_3: return new ProtocolVersion("SPDY", 3, 1); case HTTP_2: return new ProtocolVersion("HTTP", 2, 0); } throw new IllegalAccessError("Unknown protocol"); } private static RequestBody createRequestBody(Request request) throws AuthFailureError { final byte[] body = request.getBody(); if (body == null) { return null; } return RequestBody.create(MediaType.parse(request.getBodyContentType()), body); } }