Hi, I was hoping to use traffic shaping to reserve bandwidth for http streaming
video, and use squid to tag the video traffic separately from other content. I
am running OpenBSD 5.0 with squid 2.7, using squid as a transparent non-caching
proxy. I am attempting to get squid to set the TOS on the packets from server
to client so pf can assign them to an appropriate queue (outbound on the
internal interface).
So I tried something like this:
acl webvideo rep_mime_type -i ^video/MP2T$
acl webvideo rep_mime_type -i ^video/mp4$
tcp_outgoing_tos 0x15 webvideo
However, as best I can tell squid is not setting the tos on any of these
packets. Have I overlooked something? (the 0x15 was picked at random) I
verified I have the rep_mime_types defined properly by setting
“http_reply_access deny webvideo” and the content was blocked.
Also, to validate that squid was able to set TOS at all, I tried this:
acl all src all
tcp_outgoing_tos 0x15 all
In this case I see the tos set on the packets to the server, but not set on the
packets back to the client (which I believe I need set in order to assign the
streaming content to the appropriate queue on the inside interface).
Any advice on what I am doing wrong, or whether squid is even the correct
approach for this, is greatly appreciated. Thanks!
Brian
