Robust error handling in downloading code

diff --git a/youtube-dl b/youtube-dl
index 68c9bc4..3f45e92 100755 (executable)
--- a/youtube-dl
+++ b/youtube-dl
@@ -930,6 +930,7 @@ class FileDownloader(object):
                        if stream is None:
                                try:
                                        (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
+                                       assert stream is not None
                                        filename = self.undo_temp_name(tmpfilename)
                                        self.report_destination(filename)
                                except (OSError, IOError), err:
@@ -951,6 +952,9 @@ class FileDownloader(object):
                        # Apply rate limit
                        self.slow_down(start, byte_counter - resume_len)
 
+               if stream is None:
+                       self.trouble(u'\nERROR: Did not get any data blocks')
+                       return False
                stream.close()
                self.report_finish()
                if data_len is not None and byte_counter != data_len: