[downloader/http] Improve timeout detection when reading block of data (refs #10935)

youtube_dl/downloader/http.py

@@ -238,9 +238,11 @@ class HttpFD(FileDownloader):
                 except socket.timeout as e:
                     retry(e)
                 except socket.error as e:
-                    if e.errno not in (errno.ECONNRESET, errno.ETIMEDOUT):
-                        raise
+                    # SSLError on python 2 (inherits socket.error) may have
+                    # no errno set but this error message
+                    if e.errno in (errno.ECONNRESET, errno.ETIMEDOUT) or getattr(e, 'message') == 'The read operation timed out':
                         retry(e)
+                    raise
 
                 byte_counter += len(data_block)