diff options
Diffstat (limited to 'youtube_dl/downloader/http.py')
| -rw-r--r-- | youtube_dl/downloader/http.py | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/youtube_dl/downloader/http.py b/youtube_dl/downloader/http.py deleted file mode 100644 index 5b1e960..0000000 --- a/youtube_dl/downloader/http.py +++ /dev/null @@ -1,354 +0,0 @@ -from __future__ import unicode_literals - -import errno -import os -import socket -import time -import random -import re - -from .common import FileDownloader -from ..compat import ( - compat_str, - compat_urllib_error, -) -from ..utils import ( - ContentTooShortError, - encodeFilename, - int_or_none, - sanitize_open, - sanitized_Request, - write_xattr, - XAttrMetadataError, - XAttrUnavailableError, -) - - -class HttpFD(FileDownloader): - def real_download(self, filename, info_dict): - url = info_dict['url'] - - class DownloadContext(dict): - __getattr__ = dict.get - __setattr__ = dict.__setitem__ - __delattr__ = dict.__delitem__ - - ctx = DownloadContext() - ctx.filename = filename - ctx.tmpfilename = self.temp_name(filename) - ctx.stream = None - - # Do not include the Accept-Encoding header - headers = {'Youtubedl-no-compression': 'True'} - add_headers = info_dict.get('http_headers') - if add_headers: - headers.update(add_headers) - - is_test = self.params.get('test', False) - chunk_size = self._TEST_FILE_SIZE if is_test else ( - info_dict.get('downloader_options', {}).get('http_chunk_size') or - self.params.get('http_chunk_size') or 0) - - ctx.open_mode = 'wb' - ctx.resume_len = 0 - ctx.data_len = None - ctx.block_size = self.params.get('buffersize', 1024) - ctx.start_time = time.time() - ctx.chunk_size = None - - if self.params.get('continuedl', True): - # Establish possible resume length - if os.path.isfile(encodeFilename(ctx.tmpfilename)): - ctx.resume_len = os.path.getsize( - encodeFilename(ctx.tmpfilename)) - - ctx.is_resume = ctx.resume_len > 0 - - count = 0 - retries = self.params.get('retries', 0) - - class SucceedDownload(Exception): - pass - - class RetryDownload(Exception): - def __init__(self, source_error): - self.source_error = source_error - - class NextFragment(Exception): - pass - - def set_range(req, start, end): - range_header = 'bytes=%d-' % start - if end: - range_header += compat_str(end) - req.add_header('Range', range_header) - - def establish_connection(): - ctx.chunk_size = (random.randint(int(chunk_size * 0.95), chunk_size) - if not is_test and chunk_size else chunk_size) - if ctx.resume_len > 0: - range_start = ctx.resume_len - if ctx.is_resume: - self.report_resuming_byte(ctx.resume_len) - ctx.open_mode = 'ab' - elif ctx.chunk_size > 0: - range_start = 0 - else: - range_start = None - ctx.is_resume = False - range_end = range_start + ctx.chunk_size - 1 if ctx.chunk_size else None - if range_end and ctx.data_len is not None and range_end >= ctx.data_len: - range_end = ctx.data_len - 1 - has_range = range_start is not None - ctx.has_range = has_range - request = sanitized_Request(url, None, headers) - if has_range: - set_range(request, range_start, range_end) - # Establish connection - try: - ctx.data = self.ydl.urlopen(request) - # When trying to resume, Content-Range HTTP header of response has to be checked - # to match the value of requested Range HTTP header. This is due to a webservers - # that don't support resuming and serve a whole file with no Content-Range - # set in response despite of requested Range (see - # https://github.com/rg3/youtube-dl/issues/6057#issuecomment-126129799) - if has_range: - content_range = ctx.data.headers.get('Content-Range') - if content_range: - content_range_m = re.search(r'bytes (\d+)-(\d+)?(?:/(\d+))?', content_range) - # Content-Range is present and matches requested Range, resume is possible - if content_range_m: - if range_start == int(content_range_m.group(1)): - content_range_end = int_or_none(content_range_m.group(2)) - content_len = int_or_none(content_range_m.group(3)) - accept_content_len = ( - # Non-chunked download - not ctx.chunk_size or - # Chunked download and requested piece or - # its part is promised to be served - content_range_end == range_end or - content_len < range_end) - if accept_content_len: - ctx.data_len = content_len - return - # Content-Range is either not present or invalid. Assuming remote webserver is - # trying to send the whole file, resume is not possible, so wiping the local file - # and performing entire redownload - self.report_unable_to_resume() - ctx.resume_len = 0 - ctx.open_mode = 'wb' - ctx.data_len = int_or_none(ctx.data.info().get('Content-length', None)) - return - except (compat_urllib_error.HTTPError, ) as err: - if err.code == 416: - # Unable to resume (requested range not satisfiable) - try: - # Open the connection again without the range header - ctx.data = self.ydl.urlopen( - sanitized_Request(url, None, headers)) - content_length = ctx.data.info()['Content-Length'] - except (compat_urllib_error.HTTPError, ) as err: - if err.code < 500 or err.code >= 600: - raise - else: - # Examine the reported length - if (content_length is not None and - (ctx.resume_len - 100 < int(content_length) < ctx.resume_len + 100)): - # The file had already been fully downloaded. - # Explanation to the above condition: in issue #175 it was revealed that - # YouTube sometimes adds or removes a few bytes from the end of the file, - # changing the file size slightly and causing problems for some users. So - # I decided to implement a suggested change and consider the file - # completely downloaded if the file size differs less than 100 bytes from - # the one in the hard drive. - self.report_file_already_downloaded(ctx.filename) - self.try_rename(ctx.tmpfilename, ctx.filename) - self._hook_progress({ - 'filename': ctx.filename, - 'status': 'finished', - 'downloaded_bytes': ctx.resume_len, - 'total_bytes': ctx.resume_len, - }) - raise SucceedDownload() - else: - # The length does not match, we start the download over - self.report_unable_to_resume() - ctx.resume_len = 0 - ctx.open_mode = 'wb' - return - elif err.code < 500 or err.code >= 600: - # Unexpected HTTP error - raise - raise RetryDownload(err) - except socket.error as err: - if err.errno != errno.ECONNRESET: - # Connection reset is no problem, just retry - raise - raise RetryDownload(err) - - def download(): - data_len = ctx.data.info().get('Content-length', None) - - # Range HTTP header may be ignored/unsupported by a webserver - # (e.g. extractor/scivee.py, extractor/bambuser.py). - # However, for a test we still would like to download just a piece of a file. - # To achieve this we limit data_len to _TEST_FILE_SIZE and manually control - # block size when downloading a file. - if is_test and (data_len is None or int(data_len) > self._TEST_FILE_SIZE): - data_len = self._TEST_FILE_SIZE - - if data_len is not None: - data_len = int(data_len) + ctx.resume_len - min_data_len = self.params.get('min_filesize') - max_data_len = self.params.get('max_filesize') - if min_data_len is not None and data_len < min_data_len: - self.to_screen('\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len)) - return False - if max_data_len is not None and data_len > max_data_len: - self.to_screen('\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len)) - return False - - byte_counter = 0 + ctx.resume_len - block_size = ctx.block_size - start = time.time() - - # measure time over whole while-loop, so slow_down() and best_block_size() work together properly - now = None # needed for slow_down() in the first loop run - before = start # start measuring - - def retry(e): - to_stdout = ctx.tmpfilename == '-' - if not to_stdout: - ctx.stream.close() - ctx.stream = None - ctx.resume_len = byte_counter if to_stdout else os.path.getsize(encodeFilename(ctx.tmpfilename)) - raise RetryDownload(e) - - while True: - try: - # Download and write - data_block = ctx.data.read(block_size if not is_test else min(block_size, data_len - byte_counter)) - # socket.timeout is a subclass of socket.error but may not have - # errno set - except socket.timeout as e: - retry(e) - except socket.error as e: - if e.errno not in (errno.ECONNRESET, errno.ETIMEDOUT): - raise - retry(e) - - byte_counter += len(data_block) - - # exit loop when download is finished - if len(data_block) == 0: - break - - # Open destination file just in time - if ctx.stream is None: - try: - ctx.stream, ctx.tmpfilename = sanitize_open( - ctx.tmpfilename, ctx.open_mode) - assert ctx.stream is not None - ctx.filename = self.undo_temp_name(ctx.tmpfilename) - self.report_destination(ctx.filename) - except (OSError, IOError) as err: - self.report_error('unable to open for writing: %s' % str(err)) - return False - - if self.params.get('xattr_set_filesize', False) and data_len is not None: - try: - write_xattr(ctx.tmpfilename, 'user.ytdl.filesize', str(data_len).encode('utf-8')) - except (XAttrUnavailableError, XAttrMetadataError) as err: - self.report_error('unable to set filesize xattr: %s' % str(err)) - - try: - ctx.stream.write(data_block) - except (IOError, OSError) as err: - self.to_stderr('\n') - self.report_error('unable to write data: %s' % str(err)) - return False - - # Apply rate limit - self.slow_down(start, now, byte_counter - ctx.resume_len) - - # end measuring of one loop run - now = time.time() - after = now - - # Adjust block size - if not self.params.get('noresizebuffer', False): - block_size = self.best_block_size(after - before, len(data_block)) - - before = after - - # Progress message - speed = self.calc_speed(start, now, byte_counter - ctx.resume_len) - if ctx.data_len is None: - eta = None - else: - eta = self.calc_eta(start, time.time(), ctx.data_len - ctx.resume_len, byte_counter - ctx.resume_len) - - self._hook_progress({ - 'status': 'downloading', - 'downloaded_bytes': byte_counter, - 'total_bytes': ctx.data_len, - 'tmpfilename': ctx.tmpfilename, - 'filename': ctx.filename, - 'eta': eta, - 'speed': speed, - 'elapsed': now - ctx.start_time, - }) - - if is_test and byte_counter == data_len: - break - - if not is_test and ctx.chunk_size and ctx.data_len is not None and byte_counter < ctx.data_len: - ctx.resume_len = byte_counter - # ctx.block_size = block_size - raise NextFragment() - - if ctx.stream is None: - self.to_stderr('\n') - self.report_error('Did not get any data blocks') - return False - if ctx.tmpfilename != '-': - ctx.stream.close() - - if data_len is not None and byte_counter != data_len: - err = ContentTooShortError(byte_counter, int(data_len)) - if count <= retries: - retry(err) - raise err - - self.try_rename(ctx.tmpfilename, ctx.filename) - - # Update file modification time - if self.params.get('updatetime', True): - info_dict['filetime'] = self.try_utime(ctx.filename, ctx.data.info().get('last-modified', None)) - - self._hook_progress({ - 'downloaded_bytes': byte_counter, - 'total_bytes': byte_counter, - 'filename': ctx.filename, - 'status': 'finished', - 'elapsed': time.time() - ctx.start_time, - }) - - return True - - while count <= retries: - try: - establish_connection() - return download() - except RetryDownload as e: - count += 1 - if count <= retries: - self.report_retry(e.source_error, count, retries) - continue - except NextFragment: - continue - except SucceedDownload: - return True - - self.report_error('giving up after %s retries' % retries) - return False |