import os
import socket
import time
+import random
import re
from .common import FileDownloader
-from ..compat import compat_urllib_error
+from ..compat import (
+ compat_str,
+ compat_urllib_error,
+)
from ..utils import (
ContentTooShortError,
encodeFilename,
+ int_or_none,
sanitize_open,
sanitized_Request,
write_xattr,
add_headers = info_dict.get('http_headers')
if add_headers:
headers.update(add_headers)
- basic_request = sanitized_Request(url, None, headers)
- request = sanitized_Request(url, None, headers)
is_test = self.params.get('test', False)
-
- if is_test:
- request.add_header('Range', 'bytes=0-%s' % str(self._TEST_FILE_SIZE - 1))
+ 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.resume_len = os.path.getsize(
+ encodeFilename(ctx.tmpfilename))
+
+ ctx.is_resume = ctx.resume_len > 0
count = 0
retries = self.params.get('retries', 0)
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():
- if ctx.resume_len != 0:
- self.report_resuming_byte(ctx.resume_len)
- request.add_header('Range', 'bytes=%d-' % ctx.resume_len)
+ 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)
+ try:
+ ctx.data = self.ydl.urlopen(request)
+ except (compat_urllib_error.URLError, ) as err:
+ if isinstance(err.reason, socket.timeout):
+ raise RetryDownload(err)
+ raise err
# 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 ctx.resume_len > 0:
+ # https://github.com/ytdl-org/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+)-', 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 and ctx.resume_len == int(content_range_m.group(1)):
- return
+ 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
+ # Chunked download and requested piece or
+ # its part is promised to be served
+ or 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 < 500 or err.code >= 600) and err.code != 416:
- # Unexpected HTTP error
- raise
- elif err.code == 416:
+ 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(basic_request)
+ 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)):
+ 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,
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:
return False
byte_counter = 0 + ctx.resume_len
- block_size = self.params.get('buffersize', 1024)
+ block_size = ctx.block_size
start = time.time()
# measure time over whole while-loop, so slow_down() and best_block_size() work together properly
before = start # start measuring
def retry(e):
- if ctx.tmpfilename != '-':
- ctx.stream.close()
- ctx.stream = None
- ctx.resume_len = os.path.getsize(encodeFilename(ctx.tmpfilename))
+ to_stdout = ctx.tmpfilename == '-'
+ if ctx.stream is not None:
+ 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))
+ data_block = ctx.data.read(block_size if data_len is None 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)
+ # SSLError on python 2 (inherits socket.error) may have
+ # no errno set but this error message
+ if e.errno in (errno.ECONNRESET, errno.ETIMEDOUT) or getattr(e, 'message') == 'The read operation timed out':
+ retry(e)
+ raise
byte_counter += len(data_block)
# Progress message
speed = self.calc_speed(start, now, byte_counter - ctx.resume_len)
- if data_len is None:
+ if ctx.data_len is None:
eta = None
else:
- eta = self.calc_eta(start, time.time(), data_len - ctx.resume_len, byte_counter - ctx.resume_len)
+ 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': data_len,
+ 'total_bytes': ctx.data_len,
'tmpfilename': ctx.tmpfilename,
'filename': ctx.filename,
'eta': eta,
'speed': speed,
- 'elapsed': now - start,
+ 'elapsed': now - ctx.start_time,
})
- if is_test and byte_counter == data_len:
+ if data_len is not None 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')
'total_bytes': byte_counter,
'filename': ctx.filename,
'status': 'finished',
- 'elapsed': time.time() - start,
+ 'elapsed': time.time() - ctx.start_time,
})
return True
while count <= retries:
try:
establish_connection()
- download()
- return True
+ 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
projects / youtube-dl / blobdiff