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Commit | Line | Data |
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4d2d638d PH |
1 | from __future__ import unicode_literals |
2 | ||
16e7711e | 3 | import errno |
3bc2ddcc | 4 | import os |
16e7711e | 5 | import socket |
3bc2ddcc JMF |
6 | import time |
7 | ||
8 | from .common import FileDownloader | |
1cc79574 | 9 | from ..compat import ( |
3bc2ddcc JMF |
10 | compat_urllib_request, |
11 | compat_urllib_error, | |
1cc79574 PH |
12 | ) |
13 | from ..utils import ( | |
3bc2ddcc | 14 | ContentTooShortError, |
3bc2ddcc JMF |
15 | encodeFilename, |
16 | sanitize_open, | |
3bc2ddcc JMF |
17 | ) |
18 | ||
19 | ||
20 | class HttpFD(FileDownloader): | |
21 | def real_download(self, filename, info_dict): | |
22 | url = info_dict['url'] | |
23 | tmpfilename = self.temp_name(filename) | |
24 | stream = None | |
25 | ||
26 | # Do not include the Accept-Encoding header | |
27 | headers = {'Youtubedl-no-compression': 'True'} | |
d769be6c PH |
28 | add_headers = info_dict.get('http_headers') |
29 | if add_headers: | |
30 | headers.update(add_headers) | |
2ddcd881 JMF |
31 | basic_request = compat_urllib_request.Request(url, None, headers) |
32 | request = compat_urllib_request.Request(url, None, headers) | |
3bc2ddcc | 33 | |
df297c87 S |
34 | is_test = self.params.get('test', False) |
35 | ||
36 | if is_test: | |
37 | request.add_header('Range', 'bytes=0-%s' % str(self._TEST_FILE_SIZE - 1)) | |
3bc2ddcc JMF |
38 | |
39 | # Establish possible resume length | |
40 | if os.path.isfile(encodeFilename(tmpfilename)): | |
41 | resume_len = os.path.getsize(encodeFilename(tmpfilename)) | |
42 | else: | |
43 | resume_len = 0 | |
44 | ||
45 | open_mode = 'wb' | |
46 | if resume_len != 0: | |
c59e701e | 47 | if self.params.get('continuedl', True): |
3bc2ddcc | 48 | self.report_resuming_byte(resume_len) |
f89197d7 | 49 | request.add_header('Range', 'bytes=%d-' % resume_len) |
3bc2ddcc JMF |
50 | open_mode = 'ab' |
51 | else: | |
52 | resume_len = 0 | |
53 | ||
54 | count = 0 | |
55 | retries = self.params.get('retries', 0) | |
56 | while count <= retries: | |
57 | # Establish connection | |
58 | try: | |
22ff5d21 | 59 | data = self.ydl.urlopen(request) |
3bc2ddcc JMF |
60 | break |
61 | except (compat_urllib_error.HTTPError, ) as err: | |
62 | if (err.code < 500 or err.code >= 600) and err.code != 416: | |
63 | # Unexpected HTTP error | |
64 | raise | |
65 | elif err.code == 416: | |
66 | # Unable to resume (requested range not satisfiable) | |
67 | try: | |
68 | # Open the connection again without the range header | |
22ff5d21 | 69 | data = self.ydl.urlopen(basic_request) |
3bc2ddcc JMF |
70 | content_length = data.info()['Content-Length'] |
71 | except (compat_urllib_error.HTTPError, ) as err: | |
72 | if err.code < 500 or err.code >= 600: | |
73 | raise | |
74 | else: | |
75 | # Examine the reported length | |
76 | if (content_length is not None and | |
77 | (resume_len - 100 < int(content_length) < resume_len + 100)): | |
78 | # The file had already been fully downloaded. | |
79 | # Explanation to the above condition: in issue #175 it was revealed that | |
80 | # YouTube sometimes adds or removes a few bytes from the end of the file, | |
81 | # changing the file size slightly and causing problems for some users. So | |
82 | # I decided to implement a suggested change and consider the file | |
83 | # completely downloaded if the file size differs less than 100 bytes from | |
84 | # the one in the hard drive. | |
85 | self.report_file_already_downloaded(filename) | |
86 | self.try_rename(tmpfilename, filename) | |
87 | self._hook_progress({ | |
88 | 'filename': filename, | |
89 | 'status': 'finished', | |
f28fe669 JMF |
90 | 'downloaded_bytes': resume_len, |
91 | 'total_bytes': resume_len, | |
3bc2ddcc JMF |
92 | }) |
93 | return True | |
94 | else: | |
95 | # The length does not match, we start the download over | |
96 | self.report_unable_to_resume() | |
60daf7f0 | 97 | resume_len = 0 |
3bc2ddcc JMF |
98 | open_mode = 'wb' |
99 | break | |
16e7711e | 100 | except socket.error as e: |
e77d2975 | 101 | if e.errno != errno.ECONNRESET: |
12832049 PH |
102 | # Connection reset is no problem, just retry |
103 | raise | |
104 | ||
3bc2ddcc JMF |
105 | # Retry |
106 | count += 1 | |
107 | if count <= retries: | |
108 | self.report_retry(count, retries) | |
109 | ||
110 | if count > retries: | |
4d2d638d | 111 | self.report_error('giving up after %s retries' % retries) |
3bc2ddcc JMF |
112 | return False |
113 | ||
114 | data_len = data.info().get('Content-length', None) | |
df297c87 S |
115 | |
116 | # Range HTTP header may be ignored/unsupported by a webserver | |
117 | # (e.g. extractor/scivee.py, extractor/bambuser.py). | |
118 | # However, for a test we still would like to download just a piece of a file. | |
119 | # To achieve this we limit data_len to _TEST_FILE_SIZE and manually control | |
120 | # block size when downloading a file. | |
32fd27ec | 121 | if is_test and (data_len is None or int(data_len) > self._TEST_FILE_SIZE): |
df297c87 S |
122 | data_len = self._TEST_FILE_SIZE |
123 | ||
3bc2ddcc JMF |
124 | if data_len is not None: |
125 | data_len = int(data_len) + resume_len | |
126 | min_data_len = self.params.get("min_filesize", None) | |
f89197d7 | 127 | max_data_len = self.params.get("max_filesize", None) |
3bc2ddcc | 128 | if min_data_len is not None and data_len < min_data_len: |
4d2d638d | 129 | self.to_screen('\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len)) |
3bc2ddcc JMF |
130 | return False |
131 | if max_data_len is not None and data_len > max_data_len: | |
4d2d638d | 132 | self.to_screen('\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len)) |
3bc2ddcc JMF |
133 | return False |
134 | ||
3bc2ddcc JMF |
135 | byte_counter = 0 + resume_len |
136 | block_size = self.params.get('buffersize', 1024) | |
137 | start = time.time() | |
c7667c2d S |
138 | |
139 | # measure time over whole while-loop, so slow_down() and best_block_size() work together properly | |
140 | now = None # needed for slow_down() in the first loop run | |
141 | before = start # start measuring | |
3bc2ddcc | 142 | while True: |
c7667c2d | 143 | |
3bc2ddcc | 144 | # Download and write |
df297c87 | 145 | data_block = data.read(block_size if not is_test else min(block_size, data_len - byte_counter)) |
c7667c2d S |
146 | byte_counter += len(data_block) |
147 | ||
148 | # exit loop when download is finished | |
3bc2ddcc JMF |
149 | if len(data_block) == 0: |
150 | break | |
3bc2ddcc | 151 | |
c7667c2d | 152 | # Open destination file just in time |
3bc2ddcc JMF |
153 | if stream is None: |
154 | try: | |
155 | (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode) | |
156 | assert stream is not None | |
157 | filename = self.undo_temp_name(tmpfilename) | |
158 | self.report_destination(filename) | |
159 | except (OSError, IOError) as err: | |
4d2d638d | 160 | self.report_error('unable to open for writing: %s' % str(err)) |
3bc2ddcc | 161 | return False |
881e6a1f PH |
162 | |
163 | if self.params.get('xattr_set_filesize', False) and data_len is not None: | |
164 | try: | |
165 | import xattr | |
166 | xattr.setxattr(tmpfilename, 'user.ytdl.filesize', str(data_len)) | |
167 | except(OSError, IOError, ImportError) as err: | |
168 | self.report_error('unable to set filesize xattr: %s' % str(err)) | |
169 | ||
3bc2ddcc JMF |
170 | try: |
171 | stream.write(data_block) | |
7976fcac | 172 | except (IOError, OSError) as err: |
4d2d638d PH |
173 | self.to_stderr('\n') |
174 | self.report_error('unable to write data: %s' % str(err)) | |
3bc2ddcc | 175 | return False |
c7667c2d S |
176 | |
177 | # Apply rate limit | |
178 | self.slow_down(start, now, byte_counter - resume_len) | |
179 | ||
180 | # end measuring of one loop run | |
181 | now = time.time() | |
182 | after = now | |
183 | ||
184 | # Adjust block size | |
3bc2ddcc JMF |
185 | if not self.params.get('noresizebuffer', False): |
186 | block_size = self.best_block_size(after - before, len(data_block)) | |
187 | ||
c7667c2d S |
188 | before = after |
189 | ||
3bc2ddcc | 190 | # Progress message |
c7667c2d | 191 | speed = self.calc_speed(start, now, byte_counter - resume_len) |
3bc2ddcc | 192 | if data_len is None: |
a91a2c1a | 193 | eta = None |
3bc2ddcc | 194 | else: |
3bc2ddcc | 195 | eta = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len) |
3bc2ddcc JMF |
196 | |
197 | self._hook_progress({ | |
5cda4eda | 198 | 'status': 'downloading', |
3bc2ddcc JMF |
199 | 'downloaded_bytes': byte_counter, |
200 | 'total_bytes': data_len, | |
201 | 'tmpfilename': tmpfilename, | |
202 | 'filename': filename, | |
3bc2ddcc JMF |
203 | 'eta': eta, |
204 | 'speed': speed, | |
5cda4eda | 205 | 'elapsed': now - start, |
3bc2ddcc JMF |
206 | }) |
207 | ||
df297c87 S |
208 | if is_test and byte_counter == data_len: |
209 | break | |
210 | ||
3bc2ddcc | 211 | if stream is None: |
4d2d638d PH |
212 | self.to_stderr('\n') |
213 | self.report_error('Did not get any data blocks') | |
3bc2ddcc | 214 | return False |
4d2d638d | 215 | if tmpfilename != '-': |
88a23aef | 216 | stream.close() |
5cda4eda | 217 | |
3bc2ddcc JMF |
218 | if data_len is not None and byte_counter != data_len: |
219 | raise ContentTooShortError(byte_counter, int(data_len)) | |
220 | self.try_rename(tmpfilename, filename) | |
221 | ||
222 | # Update file modification time | |
223 | if self.params.get('updatetime', True): | |
224 | info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None)) | |
225 | ||
226 | self._hook_progress({ | |
227 | 'downloaded_bytes': byte_counter, | |
228 | 'total_bytes': byte_counter, | |
229 | 'filename': filename, | |
230 | 'status': 'finished', | |
5cda4eda | 231 | 'elapsed': time.time() - start, |
3bc2ddcc JMF |
232 | }) |
233 | ||
234 | return True |