January 2014 - Darwin-dev - lists.apple.com

Building DarwinOS 10.9+Up
by Clifford Sekel 22 Jan '14

22 Jan '14

All, I'm looking into building Darwin from the Open-source available at opensource.apple.com I have checked out PureDarwin which is seriously outdated, but they have have some useful info to help(sorts out a lot of Apple closed code use). I know one big hurdle is CF(CF-lite) but of course not looking to redo Aqua from GNUStep or any other port, looking to lay x11r6 on top with XFCE desktop and go from there(macports should work built from source). I will as ASPL, BSD, GPL required make this Open-source, I'm really looking for help in build and porting opensource programs to build this. I have no name for this OS yet but as soon as I do I will have a Website Dev and upload everything to Sourceforge. So can I get some help(I do have Mac Mini 2013 to build on)? (Darwinbuild is too outdated as well) Thanks Cliff Sekel _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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How to use DAL plugin from CoreMediaIO sample in my application?
by Szymon Zimnowoda 16 Jan '14

16 Jan '14

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Re: sol_socket so_bindtodevice alternative
by Rustam Muginov 07 Jan '14

07 Jan '14

Hado, you can use IP_BOUND_IF to bind socket to the particular interface index. something like int idx = if_nametoindex( "en1"); setsockopt(s, IPPROTO_TCP, IP_BOUND_IF, &idx, sizeof(idx) ); -- Sincerely, Rustam Muginov On Jan 4, 2014, at 12:43 PM, Hado Hein <maclists(a)batchmaker.de> wrote: > I’m trying to find a solution to send udp broadcasts over a specific network interface. > Binding to an address is not an option. > > Since so_bindtodevice is not available on Darwin I’m looking for an alternative. > I have two ethernet interfaces which both go to different class c subnets. > The first interface has also a gateway set (Internet). > > Now I need to send a broadcast to a class a device physically on the second ethernet port. Neither of these (interface nor class a device) can change their ip or their subnet. > > Is there a possibility to achieve this at userlevel? > > > thx, > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/darwin-dev/rmuginov%40gmail.com > > This email sent to rmuginov(a)gmail.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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Re: sol_socket so_bindtodevice alternative
by Hado Hein 06 Jan '14

06 Jan '14

On 06.01.2014, at 19:43, Vincent Lubet <vlubet(a)apple.com> wrote: > With recent version of the xnu networking stack binding to an IP address does affect the routing decision. The route lookup will be restricted to route entries with the interface of the bound IP address. > >> The situation is: >> pdp0 10.x.x.x with gateway >> eth0 192.x.x.x without gateway, but with physical/layer 2 reachability for the devices which have 2.x.x.x >> >> Even if i bind to the eth0 ip packets will go out on pdp0 since this one has the gateway. SO_dontroute wasn’t a success also. > > This may be a bug or a corner case. Does this happen only on iOS? In the long term I want to use it in one CFPlugin on all OSes. I had the same problem on MacOS a year or two ago. The solution was to setuid on the executable and open another interface on eth (with a suitable 2.x.x.x address). I did’nt like it cause of the setuid but it worked. I’ll investigate into recent versions of the OS - unfortunately my users (stage industry) do not update their devices OS nor their hardware. They take things they bought and run them for 15+ years (meaning G4s or first gen iPods). I’d call this definitely a corner case. The class a output devices fed from control desks will never(™) go class c, but the control desks all use class c for their remotes. So the users want a) remote control their desks and b) scan and configure their output devices from the same device. Hado _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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Re: sol_socket so_bindtodevice alternative
by Vincent Lubet 06 Jan '14

06 Jan '14

On Jan 6, 2014, at 5:53 AM, Hado Hein <maclists(a)batchmaker.de> wrote: > > On 05.01.2014, at 05:30, Ross Bencina <rossb-lists(a)audiomulch.com> wrote: > >> On 5/01/2014 7:43 AM, Hado Hein wrote: >>> I’m trying to find a solution to send udp broadcasts over a specific network interface. >>> Binding to an address is not an option. >> >> Probably I am missing something, but why is binding to an address not an option? >> >> 1. Determine the address of the local adapter you want to send from (there are APIs to enumerate adapters and get their addresses). >> >> 2. Use the local adapter address in sin_addr.s_addr to bind(). >> >> Ross. > > Hi Ross, > > binding to an adress does not influence routing (afaik). > Binding to an address is about receiving only. If i send on a bound socket the ip stack still routes the packet on through the interface that has the gateway. Ross is correct in principle. With recent version of the xnu networking stack binding to an IP address does affect the routing decision. The route lookup will be restricted to route entries with the interface of the bound IP address. > The situation is: > pdp0 10.x.x.x with gateway > eth0 192.x.x.x without gateway, but with physical/layer 2 reachability for the devices which have 2.x.x.x > > Even if i bind to the eth0 ip packets will go out on pdp0 since this one has the gateway. SO_dontroute wasn’t a success also. This may be a bug or a corner case. Does this happen only on iOS? Vincent _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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Re: sol_socket so_bindtodevice alternative
by Hado Hein 06 Jan '14

06 Jan '14

On 05.01.2014, at 05:30, Ross Bencina <rossb-lists(a)audiomulch.com> wrote: > On 5/01/2014 7:43 AM, Hado Hein wrote: >> I’m trying to find a solution to send udp broadcasts over a specific network interface. >> Binding to an address is not an option. > > Probably I am missing something, but why is binding to an address not an option? > > 1. Determine the address of the local adapter you want to send from (there are APIs to enumerate adapters and get their addresses). > > 2. Use the local adapter address in sin_addr.s_addr to bind(). > > Ross. Hi Ross, binding to an adress does not influence routing (afaik). Binding to an address is about receiving only. If i send on a bound socket the ip stack still routes the packet on through the interface that has the gateway. The situation is: pdp0 10.x.x.x with gateway eth0 192.x.x.x without gateway, but with physical/layer 2 reachability for the devices which have 2.x.x.x Even if i bind to the eth0 ip packets will go out on pdp0 since this one has the gateway. SO_dontroute wasn’t a success also. thx, Hado. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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sol_socket so_bindtodevice alternative
by Hado Hein 04 Jan '14

04 Jan '14

I’m trying to find a solution to send udp broadcasts over a specific network interface. Binding to an address is not an option. Since so_bindtodevice is not available on Darwin I’m looking for an alternative. I have two ethernet interfaces which both go to different class c subnets. The first interface has also a gateway set (Internet). Now I need to send a broadcast to a class a device physically on the second ethernet port. Neither of these (interface nor class a device) can change their ip or their subnet. Is there a possibility to achieve this at userlevel? thx, _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.ap… This email sent to site_archiver(a)lists.apple.com

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