[Bug 791743] New: Multicast TTL not set on stream sockets correctly

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Mon Dec 18 17:13:48 UTC 2017


https://bugzilla.gnome.org/show_bug.cgi?id=791743

            Bug ID: 791743
           Summary: Multicast TTL not set on stream sockets correctly
    Classification: Platform
           Product: GStreamer
           Version: 1.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-rtsp-server
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: ian.arkver.dev at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 365710
  --> https://bugzilla.gnome.org/attachment.cgi?id=365710&action=edit
Example trace showing an address pool with TTL=16 being used, but the
multiudpsink "clients" being set to TTL=1

When a media factory has a multicast address pool assigned with a non-default
TTL and the protocols are set to GST_RTSP_LOWER_TRANS_UDP_MCAST, the TTL is not
applied to the stream sockets. These are set to use the default multicast TTL
of 1. Packets observed on the wire indeed have TTL=1.

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