[yt-dlp.git] / yt_dlp / downloader / http.py

import os
import random
import socket
import ssl
import time

from .common import FileDownloader
from ..compat import compat_http_client, compat_urllib_error
from ..utils import (
    ContentTooShortError,
    ThrottledDownload,
    XAttrMetadataError,
    XAttrUnavailableError,
    encodeFilename,
    int_or_none,
    parse_http_range,
    sanitized_Request,
    try_call,
    write_xattr,
)

RESPONSE_READ_EXCEPTIONS = (
    TimeoutError,
    socket.timeout,  # compat: py < 3.10
    ConnectionError,
    ssl.SSLError,
    compat_http_client.HTTPException
)


class HttpFD(FileDownloader):
    def real_download(self, filename, info_dict):
        url = info_dict['url']
        request_data = info_dict.get('request_data', None)

        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 (
            self.params.get('http_chunk_size')
            or info_dict.get('downloader_options', {}).get('http_chunk_size')
            or 0)

        ctx.open_mode = 'wb'
        ctx.resume_len = 0
        ctx.block_size = self.params.get('buffersize', 1024)
        ctx.start_time = time.time()

        # parse given Range
        req_start, req_end, _ = parse_http_range(headers.get('Range'))

        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 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 req_start is not None:
                    # offset the beginning of Range to be within request
                    range_start += req_start
                if ctx.is_resume:
                    self.report_resuming_byte(ctx.resume_len)
                ctx.open_mode = 'ab'
            elif req_start is not None:
                range_start = req_start
            elif ctx.chunk_size > 0:
                range_start = 0
            else:
                range_start = None
            ctx.is_resume = False

            if ctx.chunk_size:
                chunk_aware_end = range_start + ctx.chunk_size - 1
                # we're not allowed to download outside Range
                range_end = chunk_aware_end if req_end is None else min(chunk_aware_end, req_end)
            elif req_end is not None:
                # there's no need for chunked downloads, so download until the end of Range
                range_end = req_end
            else:
                range_end = None

            if try_call(lambda: range_start > range_end):
                ctx.resume_len = 0
                ctx.open_mode = 'wb'
                raise RetryDownload(Exception(f'Conflicting range. (start={range_start} > end={range_end})'))

            if try_call(lambda: range_end >= ctx.content_len):
                range_end = ctx.content_len - 1

            request = sanitized_Request(url, request_data, headers)
            has_range = range_start is not None
            if has_range:
                request.add_header('Range', f'bytes={int(range_start)}-{int_or_none(range_end) or ""}')
            # 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/ytdl-org/youtube-dl/issues/6057#issuecomment-126129799)
                if has_range:
                    content_range = ctx.data.headers.get('Content-Range')
                    content_range_start, content_range_end, content_len = parse_http_range(content_range)
                    # Content-Range is present and matches requested Range, resume is possible
                    if range_start == content_range_start and (
                            # 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):
                        ctx.content_len = content_len
                        if content_len or req_end:
                            ctx.data_len = min(content_len or req_end, req_end or content_len) - (req_start or 0)
                        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 = ctx.content_len = int_or_none(ctx.data.info().get('Content-length', None))
            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, request_data, 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,
                            }, info_dict)
                            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 compat_urllib_error.URLError as err:
                if isinstance(err.reason, ssl.CertificateError):
                    raise
                raise RetryDownload(err)
            # In urllib.request.AbstractHTTPHandler, the response is partially read on request.
            # Any errors that occur during this will not be wrapped by URLError
            except RESPONSE_READ_EXCEPTIONS as err:
                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(
                        f'\r[download] File is smaller than min-filesize ({data_len} bytes < {min_data_len} bytes). Aborting.')
                    return False
                if max_data_len is not None and data_len > max_data_len:
                    self.to_screen(
                        f'\r[download] File is larger than max-filesize ({data_len} bytes > {max_data_len} bytes). Aborting.')
                    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 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))
                except RESPONSE_READ_EXCEPTIONS as err:
                    retry(err)

                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 = self.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 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())
                        except (XAttrUnavailableError, XAttrMetadataError) as err:
                            self.report_error('unable to set filesize xattr: %s' % str(err))

                try:
                    ctx.stream.write(data_block)
                except 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,
                    'ctx_id': info_dict.get('ctx_id'),
                }, info_dict)

                if data_len is not None and byte_counter == data_len:
                    break

                if speed and speed < (self.params.get('throttledratelimit') or 0):
                    # The speed must stay below the limit for 3 seconds
                    # This prevents raising error when the speed temporarily goes down
                    if ctx.throttle_start is None:
                        ctx.throttle_start = now
                    elif now - ctx.throttle_start > 3:
                        if ctx.stream is not None and ctx.tmpfilename != '-':
                            ctx.stream.close()
                        raise ThrottledDownload()
                elif speed:
                    ctx.throttle_start = None

            if not is_test and ctx.chunk_size and ctx.content_len is not None and byte_counter < ctx.content_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,
                'ctx_id': info_dict.get('ctx_id'),
            }, info_dict)

            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)
                else:
                    self.to_screen(f'[download] Got server HTTP error: {e.source_error}')
                continue
            except NextFragment:
                continue
            except SucceedDownload:
                return True

        self.report_error('giving up after %s retries' % retries)
        return False
Commit	Line	Data
3bc2ddcc	1	import os
f8271158	2	import random
5faf6528	3	import socket
a2e77303	4	import ssl
3bc2ddcc JMF	5	import time
	6
	7	from .common import FileDownloader
f8271158	8	from ..compat import compat_http_client, compat_urllib_error
1cc79574	9	from ..utils import (
3bc2ddcc	10	ContentTooShortError,
f8271158	11	ThrottledDownload,
	12	XAttrMetadataError,
	13	XAttrUnavailableError,
3bc2ddcc	14	encodeFilename,
ba515388	15	int_or_none,
93c8410d	16	parse_http_range,
5c2266df	17	sanitized_Request,
c4f60dd7	18	try_call,
d7753d19	19	write_xattr,
3bc2ddcc JMF	20	)
3bc2ddcc JMF	21
5faf6528	22	RESPONSE_READ_EXCEPTIONS = (
	23	TimeoutError,
	24	socket.timeout, # compat: py < 3.10
	25	ConnectionError,
	26	ssl.SSLError,
	27	compat_http_client.HTTPException
	28	)
a2e77303	29
3bc2ddcc JMF	30
3bc2ddcc JMF	31	class HttpFD(FileDownloader):
d3f0687c	32	def real_download(self, filename, info_dict):
3bc2ddcc	33	url = info_dict['url']
273762c8	34	request_data = info_dict.get('request_data', None)
a3c3a1e1 S	35
	36	class DownloadContext(dict):
	37	__getattr__ = dict.get
	38	__setattr__ = dict.__setitem__
	39	__delattr__ = dict.__delitem__
	40
	41	ctx = DownloadContext()
	42	ctx.filename = filename
	43	ctx.tmpfilename = self.temp_name(filename)
	44	ctx.stream = None
3bc2ddcc JMF	45
	46	# Do not include the Accept-Encoding header
	47	headers = {'Youtubedl-no-compression': 'True'}
d769be6c PH	48	add_headers = info_dict.get('http_headers')
	49	if add_headers:
	50	headers.update(add_headers)
3bc2ddcc	51
df297c87	52	is_test = self.params.get('test', False)
ba515388	53	chunk_size = self._TEST_FILE_SIZE if is_test else (
b5ae35ee	54	self.params.get('http_chunk_size')
b5ae35ee	55	or info_dict.get('downloader_options', {}).get('http_chunk_size')
b922db9f	56	or 0)
3bc2ddcc	57
a3c3a1e1 S	58	ctx.open_mode = 'wb'
a3c3a1e1 S	59	ctx.resume_len = 0
ba515388 S	60	ctx.block_size = self.params.get('buffersize', 1024)
ba515388 S	61	ctx.start_time = time.time()
a3c3a1e1	62
93c8410d LNO	63	# parse given Range
	64	req_start, req_end, _ = parse_http_range(headers.get('Range'))
	65
a3c3a1e1 S	66	if self.params.get('continuedl', True):
	67	# Establish possible resume length
	68	if os.path.isfile(encodeFilename(ctx.tmpfilename)):
ba515388 S	69	ctx.resume_len = os.path.getsize(
	70	encodeFilename(ctx.tmpfilename))
	71
	72	ctx.is_resume = ctx.resume_len > 0
3bc2ddcc JMF	73
	74	count = 0
	75	retries = self.params.get('retries', 0)
a3c3a1e1 S	76
	77	class SucceedDownload(Exception):
	78	pass
	79
	80	class RetryDownload(Exception):
	81	def __init__(self, source_error):
	82	self.source_error = source_error
	83
ba515388 S	84	class NextFragment(Exception):
	85	pass
	86
a3c3a1e1	87	def establish_connection():
b91a7a4e S	88	ctx.chunk_size = (random.randint(int(chunk_size * 0.95), chunk_size)
b91a7a4e S	89	if not is_test and chunk_size else chunk_size)
ba515388 S	90	if ctx.resume_len > 0:
ba515388 S	91	range_start = ctx.resume_len
93c8410d LNO	92	if req_start is not None:
	93	# offset the beginning of Range to be within request
	94	range_start += req_start
ba515388 S	95	if ctx.is_resume:
ba515388 S	96	self.report_resuming_byte(ctx.resume_len)
a3c3a1e1	97	ctx.open_mode = 'ab'
be4685ab LNO	98	elif req_start is not None:
be4685ab LNO	99	range_start = req_start
b91a7a4e	100	elif ctx.chunk_size > 0:
ba515388 S	101	range_start = 0
	102	else:
	103	range_start = None
	104	ctx.is_resume = False
93c8410d LNO	105
	106	if ctx.chunk_size:
	107	chunk_aware_end = range_start + ctx.chunk_size - 1
	108	# we're not allowed to download outside Range
	109	range_end = chunk_aware_end if req_end is None else min(chunk_aware_end, req_end)
	110	elif req_end is not None:
	111	# there's no need for chunked downloads, so download until the end of Range
	112	range_end = req_end
	113	else:
	114	range_end = None
	115
c4f60dd7	116	if try_call(lambda: range_start > range_end):
be4685ab LNO	117	ctx.resume_len = 0
	118	ctx.open_mode = 'wb'
	119	raise RetryDownload(Exception(f'Conflicting range. (start={range_start} > end={range_end})'))
	120
c4f60dd7	121	if try_call(lambda: range_end >= ctx.content_len):
be4685ab LNO	122	range_end = ctx.content_len - 1
be4685ab LNO	123
273762c8	124	request = sanitized_Request(url, request_data, headers)
be4685ab	125	has_range = range_start is not None
ba515388	126	if has_range:
a44ca5a4	127	request.add_header('Range', f'bytes={int(range_start)}-{int_or_none(range_end) or ""}')
3bc2ddcc JMF	128	# Establish connection
3bc2ddcc JMF	129	try:
a2e77303	130	ctx.data = self.ydl.urlopen(request)
84bc4dcb S	131	# When trying to resume, Content-Range HTTP header of response has to be checked
	132	# to match the value of requested Range HTTP header. This is due to a webservers
	133	# that don't support resuming and serve a whole file with no Content-Range
	134	# set in response despite of requested Range (see
067aa17e	135	# https://github.com/ytdl-org/youtube-dl/issues/6057#issuecomment-126129799)
ba515388	136	if has_range:
a3c3a1e1	137	content_range = ctx.data.headers.get('Content-Range')
93c8410d	138	content_range_start, content_range_end, content_len = parse_http_range(content_range)
c487cf00	139	# Content-Range is present and matches requested Range, resume is possible
c487cf00	140	if range_start == content_range_start and (
93c8410d LNO	141	# Non-chunked download
	142	not ctx.chunk_size
	143	# Chunked download and requested piece or
	144	# its part is promised to be served
	145	or content_range_end == range_end
c487cf00	146	or content_len < range_end):
	147	ctx.content_len = content_len
	148	if content_len or req_end:
	149	ctx.data_len = min(content_len or req_end, req_end or content_len) - (req_start or 0)
	150	return
84bc4dcb S	151	# Content-Range is either not present or invalid. Assuming remote webserver is
	152	# trying to send the whole file, resume is not possible, so wiping the local file
	153	# and performing entire redownload
10eaa8ef	154	self.report_unable_to_resume()
a3c3a1e1 S	155	ctx.resume_len = 0
a3c3a1e1 S	156	ctx.open_mode = 'wb'
be4685ab	157	ctx.data_len = ctx.content_len = int_or_none(ctx.data.info().get('Content-length', None))
0f06bcd7	158	except compat_urllib_error.HTTPError as err:
ba515388	159	if err.code == 416:
3bc2ddcc JMF	160	# Unable to resume (requested range not satisfiable)
	161	try:
	162	# Open the connection again without the range header
cf7259bc	163	ctx.data = self.ydl.urlopen(
273762c8	164	sanitized_Request(url, request_data, headers))
a3c3a1e1	165	content_length = ctx.data.info()['Content-Length']
0f06bcd7	166	except compat_urllib_error.HTTPError as err:
3bc2ddcc JMF	167	if err.code < 500 or err.code >= 600:
	168	raise
	169	else:
	170	# Examine the reported length
3089bc74 S	171	if (content_length is not None
3089bc74 S	172	and (ctx.resume_len - 100 < int(content_length) < ctx.resume_len + 100)):
3bc2ddcc JMF	173	# The file had already been fully downloaded.
	174	# Explanation to the above condition: in issue #175 it was revealed that
	175	# YouTube sometimes adds or removes a few bytes from the end of the file,
	176	# changing the file size slightly and causing problems for some users. So
	177	# I decided to implement a suggested change and consider the file
	178	# completely downloaded if the file size differs less than 100 bytes from
	179	# the one in the hard drive.
a3c3a1e1 S	180	self.report_file_already_downloaded(ctx.filename)
a3c3a1e1 S	181	self.try_rename(ctx.tmpfilename, ctx.filename)
3bc2ddcc	182	self._hook_progress({
a3c3a1e1	183	'filename': ctx.filename,
3bc2ddcc	184	'status': 'finished',
a3c3a1e1 S	185	'downloaded_bytes': ctx.resume_len,
a3c3a1e1 S	186	'total_bytes': ctx.resume_len,
3ba7740d	187	}, info_dict)
a3c3a1e1	188	raise SucceedDownload()
3bc2ddcc JMF	189	else:
	190	# The length does not match, we start the download over
	191	self.report_unable_to_resume()
a3c3a1e1 S	192	ctx.resume_len = 0
	193	ctx.open_mode = 'wb'
	194	return
ba515388 S	195	elif err.code < 500 or err.code >= 600:
	196	# Unexpected HTTP error
	197	raise
a3c3a1e1	198	raise RetryDownload(err)
a2e77303	199	except compat_urllib_error.URLError as err:
	200	if isinstance(err.reason, ssl.CertificateError):
	201	raise
	202	raise RetryDownload(err)
	203	# In urllib.request.AbstractHTTPHandler, the response is partially read on request.
	204	# Any errors that occur during this will not be wrapped by URLError
	205	except RESPONSE_READ_EXCEPTIONS as err:
9fab498f	206	raise RetryDownload(err)
a3c3a1e1 S	207
	208	def download():
	209	data_len = ctx.data.info().get('Content-length', None)
	210
	211	# Range HTTP header may be ignored/unsupported by a webserver
	212	# (e.g. extractor/scivee.py, extractor/bambuser.py).
	213	# However, for a test we still would like to download just a piece of a file.
	214	# To achieve this we limit data_len to _TEST_FILE_SIZE and manually control
	215	# block size when downloading a file.
	216	if is_test and (data_len is None or int(data_len) > self._TEST_FILE_SIZE):
	217	data_len = self._TEST_FILE_SIZE
	218
	219	if data_len is not None:
	220	data_len = int(data_len) + ctx.resume_len
	221	min_data_len = self.params.get('min_filesize')
	222	max_data_len = self.params.get('max_filesize')
	223	if min_data_len is not None and data_len < min_data_len:
86e5f3ed	224	self.to_screen(
86e5f3ed	225	f'\r[download] File is smaller than min-filesize ({data_len} bytes < {min_data_len} bytes). Aborting.')
a3c3a1e1 S	226	return False
a3c3a1e1 S	227	if max_data_len is not None and data_len > max_data_len:
86e5f3ed	228	self.to_screen(
86e5f3ed	229	f'\r[download] File is larger than max-filesize ({data_len} bytes > {max_data_len} bytes). Aborting.')
a3c3a1e1	230	return False
12832049	231
a3c3a1e1	232	byte_counter = 0 + ctx.resume_len
ba515388	233	block_size = ctx.block_size
a3c3a1e1	234	start = time.time()
c7667c2d	235
a3c3a1e1 S	236	# measure time over whole while-loop, so slow_down() and best_block_size() work together properly
	237	now = None # needed for slow_down() in the first loop run
	238	before = start # start measuring
c7667c2d	239
a3c3a1e1	240	def retry(e):
5d6c81b6	241	to_stdout = ctx.tmpfilename == '-'
0837992a S	242	if ctx.stream is not None:
	243	if not to_stdout:
	244	ctx.stream.close()
	245	ctx.stream = None
5d6c81b6	246	ctx.resume_len = byte_counter if to_stdout else os.path.getsize(encodeFilename(ctx.tmpfilename))
a3c3a1e1	247	raise RetryDownload(e)
c7667c2d	248
a3c3a1e1 S	249	while True:
	250	try:
	251	# Download and write
0715f7e1	252	data_block = ctx.data.read(block_size if not is_test else min(block_size, data_len - byte_counter))
a2e77303	253	except RESPONSE_READ_EXCEPTIONS as err:
a2e77303	254	retry(err)
a3c3a1e1 S	255
	256	byte_counter += len(data_block)
	257
	258	# exit loop when download is finished
	259	if len(data_block) == 0:
	260	break
	261
	262	# Open destination file just in time
	263	if ctx.stream is None:
	264	try:
205a0654	265	ctx.stream, ctx.tmpfilename = self.sanitize_open(
a3c3a1e1 S	266	ctx.tmpfilename, ctx.open_mode)
	267	assert ctx.stream is not None
	268	ctx.filename = self.undo_temp_name(ctx.tmpfilename)
	269	self.report_destination(ctx.filename)
86e5f3ed	270	except OSError as err:
a3c3a1e1 S	271	self.report_error('unable to open for writing: %s' % str(err))
	272	return False
	273
	274	if self.params.get('xattr_set_filesize', False) and data_len is not None:
	275	try:
0f06bcd7	276	write_xattr(ctx.tmpfilename, 'user.ytdl.filesize', str(data_len).encode())
a3c3a1e1 S	277	except (XAttrUnavailableError, XAttrMetadataError) as err:
a3c3a1e1 S	278	self.report_error('unable to set filesize xattr: %s' % str(err))
3bc2ddcc	279
3bc2ddcc	280	try:
a3c3a1e1	281	ctx.stream.write(data_block)
86e5f3ed	282	except OSError as err:
a3c3a1e1 S	283	self.to_stderr('\n')
a3c3a1e1 S	284	self.report_error('unable to write data: %s' % str(err))
3bc2ddcc	285	return False
881e6a1f	286
a3c3a1e1 S	287	# Apply rate limit
	288	self.slow_down(start, now, byte_counter - ctx.resume_len)
	289
	290	# end measuring of one loop run
	291	now = time.time()
	292	after = now
	293
	294	# Adjust block size
	295	if not self.params.get('noresizebuffer', False):
	296	block_size = self.best_block_size(after - before, len(data_block))
	297
	298	before = after
	299
	300	# Progress message
	301	speed = self.calc_speed(start, now, byte_counter - ctx.resume_len)
ba515388	302	if ctx.data_len is None:
a3c3a1e1 S	303	eta = None
a3c3a1e1 S	304	else:
ba515388	305	eta = self.calc_eta(start, time.time(), ctx.data_len - ctx.resume_len, byte_counter - ctx.resume_len)
a3c3a1e1 S	306
	307	self._hook_progress({
	308	'status': 'downloading',
	309	'downloaded_bytes': byte_counter,
ba515388	310	'total_bytes': ctx.data_len,
a3c3a1e1 S	311	'tmpfilename': ctx.tmpfilename,
	312	'filename': ctx.filename,
	313	'eta': eta,
	314	'speed': speed,
ba515388	315	'elapsed': now - ctx.start_time,
bd50a52b	316	'ctx_id': info_dict.get('ctx_id'),
3ba7740d	317	}, info_dict)
a3c3a1e1	318
f7b42518	319	if data_len is not None and byte_counter == data_len:
a3c3a1e1 S	320	break
a3c3a1e1 S	321
51d9739f	322	if speed and speed < (self.params.get('throttledratelimit') or 0):
	323	# The speed must stay below the limit for 3 seconds
	324	# This prevents raising error when the speed temporarily goes down
a44ca5a4	325	if ctx.throttle_start is None:
	326	ctx.throttle_start = now
	327	elif now - ctx.throttle_start > 3:
51d9739f	328	if ctx.stream is not None and ctx.tmpfilename != '-':
	329	ctx.stream.close()
	330	raise ThrottledDownload()
21186af7	331	elif speed:
a44ca5a4	332	ctx.throttle_start = None
51d9739f	333
be4685ab	334	if not is_test and ctx.chunk_size and ctx.content_len is not None and byte_counter < ctx.content_len:
ba515388 S	335	ctx.resume_len = byte_counter
	336	# ctx.block_size = block_size
	337	raise NextFragment()
	338
a3c3a1e1	339	if ctx.stream is None:
4d2d638d	340	self.to_stderr('\n')
a3c3a1e1	341	self.report_error('Did not get any data blocks')
3bc2ddcc	342	return False
a3c3a1e1 S	343	if ctx.tmpfilename != '-':
a3c3a1e1 S	344	ctx.stream.close()
c7667c2d	345
a3c3a1e1 S	346	if data_len is not None and byte_counter != data_len:
	347	err = ContentTooShortError(byte_counter, int(data_len))
	348	if count <= retries:
	349	retry(err)
	350	raise err
c7667c2d	351
a3c3a1e1	352	self.try_rename(ctx.tmpfilename, ctx.filename)
c7667c2d	353
a3c3a1e1 S	354	# Update file modification time
	355	if self.params.get('updatetime', True):
	356	info_dict['filetime'] = self.try_utime(ctx.filename, ctx.data.info().get('last-modified', None))
3bc2ddcc JMF	357
	358	self._hook_progress({
	359	'downloaded_bytes': byte_counter,
a3c3a1e1 S	360	'total_bytes': byte_counter,
	361	'filename': ctx.filename,
	362	'status': 'finished',
ba515388	363	'elapsed': time.time() - ctx.start_time,
bd50a52b	364	'ctx_id': info_dict.get('ctx_id'),
3ba7740d	365	}, info_dict)
3bc2ddcc	366
a3c3a1e1 S	367	return True
	368
	369	while count <= retries:
	370	try:
	371	establish_connection()
bec49996	372	return download()
a3c3a1e1 S	373	except RetryDownload as e:
	374	count += 1
	375	if count <= retries:
	376	self.report_retry(e.source_error, count, retries)
d5a39f0b	377	else:
d5a39f0b	378	self.to_screen(f'[download] Got server HTTP error: {e.source_error}')
a3c3a1e1	379	continue
ba515388 S	380	except NextFragment:
ba515388 S	381	continue
a3c3a1e1 S	382	except SucceedDownload:
	383	return True
	384
	385	self.report_error('giving up after %s retries' % retries)
	386	return False