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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.incallui.util;
import android.os.SystemClock;
import android.util.Log;
import com.google.common.io.Closeables;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* Utility for making http requests.
*/
public class HttpFetcher {
private static final String TAG = HttpFetcher.class.getSimpleName();
/**
* Send a http request to the given url.
*
* @param urlString The url to request.
* @return The response body as a byte array. Or {@literal null} if status code is not 2xx.
* @throws java.io.IOException when an error occurs.
*/
public static byte[] getRequestAsByteArray(String urlString) throws IOException {
Log.d(TAG, "fetching " + urlString);
HttpURLConnection conn = null;
InputStream is = null;
boolean isError = false;
final long start = SystemClock.uptimeMillis();
try {
final URL url = new URL(urlString);
conn = (HttpURLConnection) url.openConnection();
Log.d(TAG, "response code: " + conn.getResponseCode());
// All 2xx codes are successful.
if (conn.getResponseCode() / 100 == 2) {
is = conn.getInputStream();
} else {
is = conn.getErrorStream();
isError = true;
}
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = is.read(buffer)) != -1) {
baos.write(buffer, 0, bytesRead);
}
if (isError) {
handleBadResponse(urlString, baos.toByteArray());
return null;
}
final byte[] response = baos.toByteArray();
Log.d(TAG, "received " + response.length + " bytes");
final long end = SystemClock.uptimeMillis();
Log.d(TAG, "fetch took " + (end - start) + " ms");
return response;
} finally {
Closeables.closeQuietly(is);
if (conn != null) {
conn.disconnect();
}
}
}
/**
* Send a http request to the given url.
*
* @param urlString The url to request.
* @return The response body as a String. Or {@literal null} if status code is not 2xx.
* @throws java.io.IOException when an error occurs.
*/
public static String getRequestAsString(String urlString) throws IOException {
final byte[] byteArr = getRequestAsByteArray(urlString);
if (byteArr == null) {
// Encountered error response... just return.
return null;
}
final String response = new String(byteArr);
Log.d(TAG, "response body: ");
Log.d(TAG, response);
return response;
}
private static void handleBadResponse(String url, byte[] response) {
Log.w(TAG, "Got bad response code from url: " + url);
Log.w(TAG, new String(response));
}
}
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