Examples with ServerError com.yanzhenjie.nohttp.error.ServerError used on opensource projects

Example 1 with ServerError

use of com.yanzhenjie.nohttp.error.ServerError in project NoHttp by yanzhenjie.

the class Downloader method download.

public void download(int what, DownloadRequest downloadRequest, DownloadListener downloadListener) {
    validateParam(downloadRequest, downloadListener);
    Connection connection = null;
    RandomAccessFile randomAccessFile = null;
    String savePathDir = downloadRequest.getFileDir();
    String fileName = downloadRequest.getFileName();
    try {
        if (TextUtils.isEmpty(savePathDir))
            savePathDir = NoHttp.getContext().getFilesDir().getAbsolutePath();
        validateDevice(savePathDir);
        if (// auto named.
        TextUtils.isEmpty(fileName))
            fileName = Long.toString(System.currentTimeMillis());
        File tempFile = new File(savePathDir, fileName + ".nohttp");
        // 断点开始处。
        long rangeSize = handleRange(tempFile, downloadRequest);
        // 连接服务器。
        connection = mHttpConnection.getConnection(downloadRequest);
        Exception exception = connection.exception();
        if (exception != null)
            throw exception;
        Logger.i("----------Response Start----------");
        Headers responseHeaders = connection.responseHeaders();
        int responseCode = responseHeaders.getResponseCode();
        // getList filename from server.
        if (downloadRequest.autoNameByHead()) {
            String contentDisposition = responseHeaders.getContentDisposition();
            if (!TextUtils.isEmpty(contentDisposition)) {
                fileName = HeaderUtil.parseHeadValue(contentDisposition, "filename", null);
                if (!TextUtils.isEmpty(fileName)) {
                    try {
                        fileName = URLDecoder.decode(fileName, downloadRequest.getParamsEncoding());
                    } catch (UnsupportedEncodingException e) {
                    // Do nothing.
                    }
                    if (fileName.startsWith("\"") && fileName.endsWith("\"")) {
                        fileName = fileName.substring(1, fileName.length() - 1);
                    }
                }
            }
            // From url.
            if (TextUtils.isEmpty(fileName)) {
                String tempUrl = downloadRequest.url();
                String[] slash = tempUrl.split("/");
                fileName = slash[slash.length - 1];
                int paramIndex = fileName.indexOf("?");
                if (paramIndex > 0) {
                    fileName = fileName.substring(0, paramIndex);
                }
            }
        }
        InputStream serverStream = connection.serverStream();
        if (responseCode >= 400) {
            ServerError error = new ServerError("Download failed, the server response code is " + responseCode + ": " + downloadRequest.url());
            error.setErrorBody(IOUtils.toString(serverStream));
            throw error;
        } else {
            long contentLength;
            // 文件总大小
            if (responseCode == 206) {
                // Content-Range: bytes [文件块的开始字节]-[文件的总大小 - 1]/[文件的总大小]。
                // Sample：Accept-Range:bytes 1024-2047/2048。
                String range = responseHeaders.getContentRange();
                try {
                    // 截取'/'之后的总大小。
                    contentLength = Long.parseLong(range.substring(range.indexOf('/') + 1));
                } catch (Throwable e) {
                    throw new ServerError("ResponseCode is 206, but content-Range error in Server HTTP header " + "information: " + range + ".");
                }
            } else if (responseCode == 304) {
                int httpContentLength = responseHeaders.getContentLength();
                downloadListener.onStart(what, true, httpContentLength, responseHeaders, httpContentLength);
                downloadListener.onProgress(what, 100, httpContentLength, 0);
                Logger.d("-------Download finish-------");
                downloadListener.onFinish(what, savePathDir + File.separator + fileName);
                return;
            } else {
                // such as: 200.
                // 服务器不支持Range。
                rangeSize = 0L;
                // 直接下载。
                contentLength = responseHeaders.getContentLength();
            }
            // 验证文件已经存在。
            File lastFile = new File(savePathDir, fileName);
            if (lastFile.exists()) {
                if (downloadRequest.isDeleteOld())
                    IOUtils.delFileOrFolder(lastFile);
                else {
                    downloadListener.onStart(what, true, lastFile.length(), responseHeaders, lastFile.length());
                    downloadListener.onProgress(what, 100, lastFile.length(), 0);
                    Logger.d("-------Download finish-------");
                    downloadListener.onFinish(what, lastFile.getAbsolutePath());
                    return;
                }
            }
            if (IOUtils.getDirSize(savePathDir) < contentLength)
                throw new StorageSpaceNotEnoughError("The folder is not enough space to save the downloaded file:" + " " + savePathDir + ".");
            // 需要重新下载，生成临时文件。
            if (responseCode != 206 && !IOUtils.createNewFile(tempFile))
                throw new StorageReadWriteError("SD isn't available, please check SD card and permission: " + "WRITE_EXTERNAL_STORAGE, and you must pay attention to Android6.0 RunTime " + "Permissions: https://github.com/yanzhenjie/AndPermission.");
            if (downloadRequest.isCanceled()) {
                Log.w("NoHttpDownloader", "Download request is canceled.");
                downloadListener.onCancel(what);
                return;
            }
            // 通知开始下载了。
            Logger.d("-------Download start-------");
            downloadListener.onStart(what, rangeSize > 0, rangeSize, responseHeaders, contentLength);
            randomAccessFile = new RandomAccessFile(tempFile, "rws");
            randomAccessFile.seek(rangeSize);
            byte[] buffer = new byte[8096];
            int len;
            // 旧的进度记录，防止重复通知。
            int oldProgress = 0;
            // 追加目前已经下载的进度。
            long count = rangeSize;
            long startTime = System.currentTimeMillis();
            long speedCount = 0;
            long oldSpeed = 0;
            while (((len = serverStream.read(buffer)) != -1)) {
                if (downloadRequest.isCanceled()) {
                    Log.i("NoHttpDownloader", "Download request is canceled.");
                    downloadListener.onCancel(what);
                    break;
                } else {
                    randomAccessFile.write(buffer, 0, len);
                    count += len;
                    speedCount += len;
                    long time = System.currentTimeMillis() - startTime;
                    long speed = speedCount * 1000 / time;
                    boolean speedChanged = oldSpeed != speed && time >= 300;
                    Logger.i("speedCount: " + speedCount + "; time: " + time + "; speed: " + speed + "; changed: " + "" + speedChanged);
                    if (contentLength != 0) {
                        int progress = (int) (count * 100 / contentLength);
                        if (progress != oldProgress && speedChanged) {
                            downloadListener.onProgress(what, progress, count, speed);
                            speedCount = 0;
                            oldSpeed = speed;
                            startTime = System.currentTimeMillis();
                        } else if (speedChanged) {
                            downloadListener.onProgress(what, oldProgress, count, speed);
                            speedCount = 0;
                            oldSpeed = speed;
                            startTime = System.currentTimeMillis();
                        } else if (progress != oldProgress) {
                            downloadListener.onProgress(what, progress, count, oldSpeed);
                        }
                        oldProgress = progress;
                    } else if (speedChanged) {
                        downloadListener.onProgress(what, 0, count, speed);
                        speedCount = 0;
                        oldSpeed = speed;
                        startTime = System.currentTimeMillis();
                    } else {
                        downloadListener.onProgress(what, 0, count, oldSpeed);
                    }
                }
            }
            if (!downloadRequest.isCanceled()) {
                //noinspection ResultOfMethodCallIgnored
                tempFile.renameTo(lastFile);
                Logger.d("-------Download finish-------");
                downloadListener.onFinish(what, lastFile.getAbsolutePath());
            }
        }
    } catch (MalformedURLException e) {
        Logger.e(e);
        downloadListener.onDownloadError(what, new URLError(e.getMessage()));
    } catch (UnknownHostException e) {
        Logger.e(e);
        downloadListener.onDownloadError(what, new UnKnownHostError(e.getMessage()));
    } catch (SocketTimeoutException e) {
        Logger.e(e);
        downloadListener.onDownloadError(what, new TimeoutError(e.getMessage()));
    } catch (IOException e) {
        Exception newException = e;
        if (!IOUtils.canWrite(savePathDir))
            newException = new StorageReadWriteError("This folder cannot be written to the file: " + savePathDir + ".");
        else if (IOUtils.getDirSize(savePathDir) < 1024)
            newException = new StorageSpaceNotEnoughError("The folder is not enough space to save the downloaded " + "file: " + savePathDir + ".");
        Logger.e(newException);
        downloadListener.onDownloadError(what, newException);
    } catch (Exception e) {
        // NetworkError | ServerError | StorageCantWriteError | StorageSpaceNotEnoughError
        if (!NetUtil.isNetworkAvailable())
            e = new NetworkError("The network is not available.");
        Logger.e(e);
        downloadListener.onDownloadError(what, e);
    } finally {
        Logger.i("----------Response End----------");
        IOUtils.closeQuietly(randomAccessFile);
        IOUtils.closeQuietly(connection);
    }
}