Add new --print-traffic option

youtube_dl/YoutubeDL.py

@@ -148,6 +148,7 @@ class YoutubeDL(object):
     socket_timeout:    Time to wait for unresponsive hosts, in seconds
     bidi_workaround:   Work around buggy terminals without bidirectional text
                        support, using fridibi
+    debug_printtraffic:Print out sent and received HTTP traffic
 
     The following parameters are not used by YoutubeDL itself, they are used by
     the FileDownloader:
@@ -1124,10 +1125,13 @@ def _setup_opener(self):
             if 'http' in proxies and 'https' not in proxies:
                 proxies['https'] = proxies['http']
         proxy_handler = compat_urllib_request.ProxyHandler(proxies)
+
+        debuglevel = 1 if self.params.get('debug_printtraffic') else 0
         https_handler = make_HTTPS_handler(
-            self.params.get('nocheckcertificate', False))
+            self.params.get('nocheckcertificate', False), debuglevel=debuglevel)
+        ydlh = YoutubeDLHandler(debuglevel=debuglevel)
         opener = compat_urllib_request.build_opener(
-            https_handler, proxy_handler, cookie_processor, YoutubeDLHandler())
+            https_handler, proxy_handler, cookie_processor, ydlh)
         # Delete the default user-agent header, which would otherwise apply in
         # cases where our custom HTTP handler doesn't come into play
         # (See https://github.com/rg3/youtube-dl/issues/1309 for details)

youtube_dl/__init__.py

@@ -334,7 +334,9 @@ def _hide_login_info(opts):
     verbosity.add_option('--youtube-print-sig-code',
             action='store_true', dest='youtube_print_sig_code', default=False,
             help=optparse.SUPPRESS_HELP)
-
+    verbosity.add_option('--print-traffic',
+            dest='debug_printtraffic', action='store_true', default=False,
+            help=optparse.SUPPRESS_HELP)
 
     filesystem.add_option('-t', '--title',
             action='store_true', dest='usetitle', help='use title in file name (default)', default=False)
@@ -696,6 +698,7 @@ def _real_main(argv=None):
         'proxy': opts.proxy,
         'socket_timeout': opts.socket_timeout,
         'bidi_workaround': opts.bidi_workaround,
+        'debug_printtraffic': opts.debug_printtraffic,
     }
 
     with YoutubeDL(ydl_opts) as ydl:

youtube_dl/utils.py

@@ -539,7 +539,8 @@ def formatSeconds(secs):
     else:
         return '%d' % secs
 
-def make_HTTPS_handler(opts_no_check_certificate):
+
+def make_HTTPS_handler(opts_no_check_certificate, **kwargs):
     if sys.version_info < (3, 2):
         import httplib
 
@@ -560,7 +561,7 @@ def connect(self):
         class HTTPSHandlerV3(compat_urllib_request.HTTPSHandler):
             def https_open(self, req):
                 return self.do_open(HTTPSConnectionV3, req)
-        return HTTPSHandlerV3()
+        return HTTPSHandlerV3(**kwargs)
     else:
         context = ssl.SSLContext(ssl.PROTOCOL_SSLv3)
         context.verify_mode = (ssl.CERT_NONE
@@ -571,7 +572,7 @@ def https_open(self, req):
             context.load_default_certs()
         except AttributeError:
             pass  # Python < 3.4
-        return compat_urllib_request.HTTPSHandler(context=context)
+        return compat_urllib_request.HTTPSHandler(context=context, **kwargs)
 
 class ExtractorError(Exception):
     """Error during info extraction."""