--- /dev/null
+import os
+import time
+
+from .common import FileDownloader
+from ..utils import (
+ compat_urllib_request,
+ compat_urllib_error,
+ ContentTooShortError,
+
+ encodeFilename,
+ sanitize_open,
+ format_bytes,
+)
+
+
+class HttpFD(FileDownloader):
+ def real_download(self, filename, info_dict):
+ url = info_dict['url']
+ tmpfilename = self.temp_name(filename)
+ stream = None
+
+ # Do not include the Accept-Encoding header
+ headers = {'Youtubedl-no-compression': 'True'}
+ if 'user_agent' in info_dict:
+ headers['Youtubedl-user-agent'] = info_dict['user_agent']
+ basic_request = compat_urllib_request.Request(url, None, headers)
+ request = compat_urllib_request.Request(url, None, headers)
+
+ if self.params.get('test', False):
+ request.add_header('Range','bytes=0-10240')
+
+ # Establish possible resume length
+ if os.path.isfile(encodeFilename(tmpfilename)):
+ resume_len = os.path.getsize(encodeFilename(tmpfilename))
+ else:
+ resume_len = 0
+
+ open_mode = 'wb'
+ if resume_len != 0:
+ if self.params.get('continuedl', False):
+ self.report_resuming_byte(resume_len)
+ request.add_header('Range','bytes=%d-' % resume_len)
+ open_mode = 'ab'
+ else:
+ resume_len = 0
+
+ count = 0
+ retries = self.params.get('retries', 0)
+ while count <= retries:
+ # Establish connection
+ try:
+ data = compat_urllib_request.urlopen(request)
+ break
+ except (compat_urllib_error.HTTPError, ) as err:
+ if (err.code < 500 or err.code >= 600) and err.code != 416:
+ # Unexpected HTTP error
+ raise
+ elif err.code == 416:
+ # Unable to resume (requested range not satisfiable)
+ try:
+ # Open the connection again without the range header
+ data = compat_urllib_request.urlopen(basic_request)
+ content_length = 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
+ (resume_len - 100 < int(content_length) < 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(filename)
+ self.try_rename(tmpfilename, filename)
+ self._hook_progress({
+ 'filename': filename,
+ 'status': 'finished',
+ })
+ return True
+ else:
+ # The length does not match, we start the download over
+ self.report_unable_to_resume()
+ open_mode = 'wb'
+ break
+ # Retry
+ count += 1
+ if count <= retries:
+ self.report_retry(count, retries)
+
+ if count > retries:
+ self.report_error(u'giving up after %s retries' % retries)
+ return False
+
+ data_len = data.info().get('Content-length', None)
+ if data_len is not None:
+ data_len = int(data_len) + resume_len
+ min_data_len = self.params.get("min_filesize", None)
+ max_data_len = self.params.get("max_filesize", None)
+ if min_data_len is not None and data_len < min_data_len:
+ self.to_screen(u'\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(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
+ return False
+
+ data_len_str = format_bytes(data_len)
+ byte_counter = 0 + resume_len
+ block_size = self.params.get('buffersize', 1024)
+ start = time.time()
+ while True:
+ # Download and write
+ before = time.time()
+ data_block = data.read(block_size)
+ after = time.time()
+ if len(data_block) == 0:
+ break
+ byte_counter += len(data_block)
+
+ # Open file just in time
+ if stream is None:
+ try:
+ (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
+ assert stream is not None
+ filename = self.undo_temp_name(tmpfilename)
+ self.report_destination(filename)
+ except (OSError, IOError) as err:
+ self.report_error(u'unable to open for writing: %s' % str(err))
+ return False
+ try:
+ stream.write(data_block)
+ except (IOError, OSError) as err:
+ self.to_stderr(u"\n")
+ self.report_error(u'unable to write data: %s' % str(err))
+ return False
+ if not self.params.get('noresizebuffer', False):
+ block_size = self.best_block_size(after - before, len(data_block))
+
+ # Progress message
+ speed = self.calc_speed(start, time.time(), byte_counter - resume_len)
+ if data_len is None:
+ eta = percent = None
+ else:
+ percent = self.calc_percent(byte_counter, data_len)
+ eta = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
+ self.report_progress(percent, data_len_str, speed, eta)
+
+ self._hook_progress({
+ 'downloaded_bytes': byte_counter,
+ 'total_bytes': data_len,
+ 'tmpfilename': tmpfilename,
+ 'filename': filename,
+ 'status': 'downloading',
+ 'eta': eta,
+ 'speed': speed,
+ })
+
+ # Apply rate limit
+ self.slow_down(start, byte_counter - resume_len)
+
+ if stream is None:
+ self.to_stderr(u"\n")
+ self.report_error(u'Did not get any data blocks')
+ return False
+ stream.close()
+ self.report_finish(data_len_str, (time.time() - start))
+ if data_len is not None and byte_counter != data_len:
+ raise ContentTooShortError(byte_counter, int(data_len))
+ self.try_rename(tmpfilename, filename)
+
+ # Update file modification time
+ if self.params.get('updatetime', True):
+ info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
+
+ self._hook_progress({
+ 'downloaded_bytes': byte_counter,
+ 'total_bytes': byte_counter,
+ 'filename': filename,
+ 'status': 'finished',
+ })
+
+ return True
Rapsys Git / youtubedl / blobdiff