New debug option --write-pages

youtube_dl/__init__.py

@@ -316,6 +316,9 @@ def parseOpts(overrideArguments=None):
     verbosity.add_option('--dump-intermediate-pages',
             action='store_true', dest='dump_intermediate_pages', default=False,
             help='print downloaded pages to debug problems(very verbose)')
+    verbosity.add_option('--write-pages',
+            action='store_true', dest='write_pages', default=False,
+            help='Write downloaded pages to files in the current directory')
     verbosity.add_option('--youtube-print-sig-code',
             action='store_true', dest='youtube_print_sig_code', default=False,
             help=optparse.SUPPRESS_HELP)
@@ -652,6 +655,7 @@ def _real_main(argv=None):
         'prefer_free_formats': opts.prefer_free_formats,
         'verbose': opts.verbose,
         'dump_intermediate_pages': opts.dump_intermediate_pages,
+        'write_pages': opts.write_pages,
         'test': opts.test,
         'keepvideo': opts.keepvideo,
         'min_filesize': opts.min_filesize,

youtube_dl/extractor/common.py

@@ -15,6 +15,7 @@ from ..utils import (
     compiled_regex_type,
     ExtractorError,
     RegexNotFoundError,
+    sanitize_filename,
     unescapeHTML,
 )
 
@@ -182,6 +183,17 @@ class InfoExtractor(object):
             self.to_screen(u'Dumping request to ' + url)
             dump = base64.b64encode(webpage_bytes).decode('ascii')
             self._downloader.to_screen(dump)
+        if self._downloader.params.get('write_pages', False):
+            try:
+                url = url_or_request.get_full_url()
+            except AttributeError:
+                url = url_or_request
+            raw_filename = ('%s_%s.dump' % (video_id, url))
+            filename = sanitize_filename(raw_filename, restricted=True)
+            self.to_screen(u'Saving request to ' + filename)
+            with open(filename, 'wb') as outf:
+                outf.write(webpage_bytes)
+
         content = webpage_bytes.decode(encoding, 'replace')
         return (content, urlh)