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Commit | Line | Data |
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4d2d638d PH |
1 | from __future__ import unicode_literals |
2 | ||
3bc2ddcc | 3 | import os |
3bc2ddcc JMF |
4 | import time |
5 | ||
e77d2975 | 6 | from socket import error as SocketError |
7 | import errno | |
8 | ||
3bc2ddcc | 9 | from .common import FileDownloader |
1cc79574 | 10 | from ..compat import ( |
3bc2ddcc JMF |
11 | compat_urllib_request, |
12 | compat_urllib_error, | |
1cc79574 PH |
13 | ) |
14 | from ..utils import ( | |
3bc2ddcc | 15 | ContentTooShortError, |
3bc2ddcc JMF |
16 | encodeFilename, |
17 | sanitize_open, | |
18 | format_bytes, | |
19 | ) | |
20 | ||
21 | ||
22 | class HttpFD(FileDownloader): | |
23 | def real_download(self, filename, info_dict): | |
24 | url = info_dict['url'] | |
25 | tmpfilename = self.temp_name(filename) | |
26 | stream = None | |
27 | ||
28 | # Do not include the Accept-Encoding header | |
29 | headers = {'Youtubedl-no-compression': 'True'} | |
d769be6c PH |
30 | add_headers = info_dict.get('http_headers') |
31 | if add_headers: | |
32 | headers.update(add_headers) | |
33 | data = info_dict.get('http_post_data') | |
34 | http_method = info_dict.get('http_method') | |
35 | basic_request = compat_urllib_request.Request(url, data, headers) | |
36 | request = compat_urllib_request.Request(url, data, headers) | |
37 | if http_method is not None: | |
38 | basic_request.get_method = lambda: http_method | |
39 | request.get_method = lambda: http_method | |
3bc2ddcc | 40 | |
df297c87 S |
41 | is_test = self.params.get('test', False) |
42 | ||
43 | if is_test: | |
44 | request.add_header('Range', 'bytes=0-%s' % str(self._TEST_FILE_SIZE - 1)) | |
3bc2ddcc JMF |
45 | |
46 | # Establish possible resume length | |
47 | if os.path.isfile(encodeFilename(tmpfilename)): | |
48 | resume_len = os.path.getsize(encodeFilename(tmpfilename)) | |
49 | else: | |
50 | resume_len = 0 | |
51 | ||
52 | open_mode = 'wb' | |
53 | if resume_len != 0: | |
54 | if self.params.get('continuedl', False): | |
55 | self.report_resuming_byte(resume_len) | |
f89197d7 | 56 | request.add_header('Range', 'bytes=%d-' % resume_len) |
3bc2ddcc JMF |
57 | open_mode = 'ab' |
58 | else: | |
59 | resume_len = 0 | |
60 | ||
61 | count = 0 | |
62 | retries = self.params.get('retries', 0) | |
63 | while count <= retries: | |
64 | # Establish connection | |
65 | try: | |
22ff5d21 | 66 | data = self.ydl.urlopen(request) |
3bc2ddcc JMF |
67 | break |
68 | except (compat_urllib_error.HTTPError, ) as err: | |
69 | if (err.code < 500 or err.code >= 600) and err.code != 416: | |
70 | # Unexpected HTTP error | |
71 | raise | |
72 | elif err.code == 416: | |
73 | # Unable to resume (requested range not satisfiable) | |
74 | try: | |
75 | # Open the connection again without the range header | |
22ff5d21 | 76 | data = self.ydl.urlopen(basic_request) |
3bc2ddcc JMF |
77 | content_length = data.info()['Content-Length'] |
78 | except (compat_urllib_error.HTTPError, ) as err: | |
79 | if err.code < 500 or err.code >= 600: | |
80 | raise | |
81 | else: | |
82 | # Examine the reported length | |
83 | if (content_length is not None and | |
84 | (resume_len - 100 < int(content_length) < resume_len + 100)): | |
85 | # The file had already been fully downloaded. | |
86 | # Explanation to the above condition: in issue #175 it was revealed that | |
87 | # YouTube sometimes adds or removes a few bytes from the end of the file, | |
88 | # changing the file size slightly and causing problems for some users. So | |
89 | # I decided to implement a suggested change and consider the file | |
90 | # completely downloaded if the file size differs less than 100 bytes from | |
91 | # the one in the hard drive. | |
92 | self.report_file_already_downloaded(filename) | |
93 | self.try_rename(tmpfilename, filename) | |
94 | self._hook_progress({ | |
95 | 'filename': filename, | |
96 | 'status': 'finished', | |
97 | }) | |
98 | return True | |
99 | else: | |
100 | # The length does not match, we start the download over | |
101 | self.report_unable_to_resume() | |
60daf7f0 | 102 | resume_len = 0 |
3bc2ddcc JMF |
103 | open_mode = 'wb' |
104 | break | |
e77d2975 | 105 | except SocketError as e: |
106 | if e.errno != errno.ECONNRESET: | |
12832049 PH |
107 | # Connection reset is no problem, just retry |
108 | raise | |
109 | ||
3bc2ddcc JMF |
110 | # Retry |
111 | count += 1 | |
112 | if count <= retries: | |
113 | self.report_retry(count, retries) | |
114 | ||
115 | if count > retries: | |
4d2d638d | 116 | self.report_error('giving up after %s retries' % retries) |
3bc2ddcc JMF |
117 | return False |
118 | ||
119 | data_len = data.info().get('Content-length', None) | |
df297c87 S |
120 | |
121 | # Range HTTP header may be ignored/unsupported by a webserver | |
122 | # (e.g. extractor/scivee.py, extractor/bambuser.py). | |
123 | # However, for a test we still would like to download just a piece of a file. | |
124 | # To achieve this we limit data_len to _TEST_FILE_SIZE and manually control | |
125 | # block size when downloading a file. | |
32fd27ec | 126 | if is_test and (data_len is None or int(data_len) > self._TEST_FILE_SIZE): |
df297c87 S |
127 | data_len = self._TEST_FILE_SIZE |
128 | ||
3bc2ddcc JMF |
129 | if data_len is not None: |
130 | data_len = int(data_len) + resume_len | |
131 | min_data_len = self.params.get("min_filesize", None) | |
f89197d7 | 132 | max_data_len = self.params.get("max_filesize", None) |
3bc2ddcc | 133 | if min_data_len is not None and data_len < min_data_len: |
4d2d638d | 134 | self.to_screen('\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len)) |
3bc2ddcc JMF |
135 | return False |
136 | if max_data_len is not None and data_len > max_data_len: | |
4d2d638d | 137 | self.to_screen('\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len)) |
3bc2ddcc JMF |
138 | return False |
139 | ||
140 | data_len_str = format_bytes(data_len) | |
141 | byte_counter = 0 + resume_len | |
142 | block_size = self.params.get('buffersize', 1024) | |
143 | start = time.time() | |
c7667c2d S |
144 | |
145 | # measure time over whole while-loop, so slow_down() and best_block_size() work together properly | |
146 | now = None # needed for slow_down() in the first loop run | |
147 | before = start # start measuring | |
3bc2ddcc | 148 | while True: |
c7667c2d | 149 | |
3bc2ddcc | 150 | # Download and write |
df297c87 | 151 | data_block = data.read(block_size if not is_test else min(block_size, data_len - byte_counter)) |
c7667c2d S |
152 | byte_counter += len(data_block) |
153 | ||
154 | # exit loop when download is finished | |
3bc2ddcc JMF |
155 | if len(data_block) == 0: |
156 | break | |
3bc2ddcc | 157 | |
c7667c2d | 158 | # Open destination file just in time |
3bc2ddcc JMF |
159 | if stream is None: |
160 | try: | |
161 | (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode) | |
162 | assert stream is not None | |
163 | filename = self.undo_temp_name(tmpfilename) | |
164 | self.report_destination(filename) | |
165 | except (OSError, IOError) as err: | |
4d2d638d | 166 | self.report_error('unable to open for writing: %s' % str(err)) |
3bc2ddcc | 167 | return False |
881e6a1f PH |
168 | |
169 | if self.params.get('xattr_set_filesize', False) and data_len is not None: | |
170 | try: | |
171 | import xattr | |
172 | xattr.setxattr(tmpfilename, 'user.ytdl.filesize', str(data_len)) | |
173 | except(OSError, IOError, ImportError) as err: | |
174 | self.report_error('unable to set filesize xattr: %s' % str(err)) | |
175 | ||
3bc2ddcc JMF |
176 | try: |
177 | stream.write(data_block) | |
7976fcac | 178 | except (IOError, OSError) as err: |
4d2d638d PH |
179 | self.to_stderr('\n') |
180 | self.report_error('unable to write data: %s' % str(err)) | |
3bc2ddcc | 181 | return False |
c7667c2d S |
182 | |
183 | # Apply rate limit | |
184 | self.slow_down(start, now, byte_counter - resume_len) | |
185 | ||
186 | # end measuring of one loop run | |
187 | now = time.time() | |
188 | after = now | |
189 | ||
190 | # Adjust block size | |
3bc2ddcc JMF |
191 | if not self.params.get('noresizebuffer', False): |
192 | block_size = self.best_block_size(after - before, len(data_block)) | |
193 | ||
c7667c2d S |
194 | before = after |
195 | ||
3bc2ddcc | 196 | # Progress message |
c7667c2d | 197 | speed = self.calc_speed(start, now, byte_counter - resume_len) |
3bc2ddcc JMF |
198 | if data_len is None: |
199 | eta = percent = None | |
200 | else: | |
201 | percent = self.calc_percent(byte_counter, data_len) | |
202 | eta = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len) | |
203 | self.report_progress(percent, data_len_str, speed, eta) | |
204 | ||
205 | self._hook_progress({ | |
206 | 'downloaded_bytes': byte_counter, | |
207 | 'total_bytes': data_len, | |
208 | 'tmpfilename': tmpfilename, | |
209 | 'filename': filename, | |
210 | 'status': 'downloading', | |
211 | 'eta': eta, | |
212 | 'speed': speed, | |
213 | }) | |
214 | ||
df297c87 S |
215 | if is_test and byte_counter == data_len: |
216 | break | |
217 | ||
3bc2ddcc | 218 | if stream is None: |
4d2d638d PH |
219 | self.to_stderr('\n') |
220 | self.report_error('Did not get any data blocks') | |
3bc2ddcc | 221 | return False |
4d2d638d | 222 | if tmpfilename != '-': |
88a23aef | 223 | stream.close() |
3bc2ddcc JMF |
224 | self.report_finish(data_len_str, (time.time() - start)) |
225 | if data_len is not None and byte_counter != data_len: | |
226 | raise ContentTooShortError(byte_counter, int(data_len)) | |
227 | self.try_rename(tmpfilename, filename) | |
228 | ||
229 | # Update file modification time | |
230 | if self.params.get('updatetime', True): | |
231 | info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None)) | |
232 | ||
233 | self._hook_progress({ | |
234 | 'downloaded_bytes': byte_counter, | |
235 | 'total_bytes': byte_counter, | |
236 | 'filename': filename, | |
237 | 'status': 'finished', | |
238 | }) | |
239 | ||
240 | return True |