Re: Adopting postMessage and MessageChannel from HTML5?

2010-01-12 Thread Arthur Barstow
On Jan 11, 2010, at 4:17 PM, ext Maciej Stachowiak wrote: On Jan 11, 2010, at 12:10 PM, Arthur Barstow wrote: However, I believe that this spec actually is within our charter. Overall, Section 2 of the charter, Scope, states: The scope of the Web Applications Working Group covers the

Re: Adopting postMessage and MessageChannel from HTML5?

2010-01-12 Thread Maciej Stachowiak
On Jan 12, 2010, at 3:48 AM, Arthur Barstow wrote: On Jan 11, 2010, at 4:17 PM, ext Maciej Stachowiak wrote: On Jan 11, 2010, at 12:10 PM, Arthur Barstow wrote: However, I believe that this spec actually is within our charter. Overall, Section 2 of the charter, Scope, states: The scope

Re: MPEG-U

2010-01-12 Thread Cyril Concolato
Hi Robin, Le 11/01/2010 15:41, Robin Berjon a écrit : Hi Cyril, On Jan 7, 2010, at 15:59 , Cyril Concolato wrote: sorry to put you on the spot, but I don't recall this being discussed by WebApps I know that a liaison was sent from MPEG to the W3C early may 2009 and that the WG was informed.

Re: MPEG-U

2010-01-12 Thread Robin Berjon
Hi Cyril, On Jan 12, 2010, at 17:34 , Cyril Concolato wrote: Le 11/01/2010 15:41, Robin Berjon a écrit : Ah, do you have a pointer? I searched for MPEG-U in all the public and member lists yet only this thread shows up. The liaison was sent by the ISO/IEC/JTC1/SC29 secretariat, and since

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Tyler Close
On Mon, Jan 11, 2010 at 5:06 PM, Adam Barth w...@adambarth.com wrote: On Mon, Jan 11, 2010 at 12:40 PM, Tyler Close tyler.cl...@gmail.com wrote: On Sun, Jan 10, 2010 at 2:25 PM, Adam Barth w...@adambarth.com wrote: More abstractly, why aren't we worrying about P misbehaving based on the

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Adam Barth
On Tue, Jan 12, 2010 at 10:51 AM, Tyler Close tyler.cl...@gmail.com wrote: It's not feasible to remove all ambient authority. For example, the client has the authority to send requests from its IP address. So we draw a line between network connectivity and issued credentials. Proxy credentials

Re: [UMP] Server opt-in

2010-01-12 Thread Adam Barth
[Resending from the correct address.] In the current draft of UMP, the client can opt-in to UMP by choosing to use the UniformMessaging API, but the server is unable to force clients to use UMP because the way the server opts into the protocol is by returning the Access-Control-Allow-Origin

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Maciej Stachowiak
On Jan 12, 2010, at 12:29 PM, Adam Barth wrote: On Tue, Jan 12, 2010 at 10:51 AM, Tyler Close tyler.cl...@gmail.com wrote: It's not feasible to remove all ambient authority. For example, the client has the authority to send requests from its IP address. So we draw a line between network

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Tyler Close
On Tue, Jan 12, 2010 at 12:29 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 10:51 AM, Tyler Close tyler.cl...@gmail.com wrote: It's not feasible to remove all ambient authority. For example, the client has the authority to send requests from its IP address. So we draw a line

Re: [UMP] Server opt-in

2010-01-12 Thread Tyler Close
I believe all three protocols attach the same semantics to the Access-Control-Allow-Origin: * response header sent in response to a GET or POST request. Unless you know of a significant difference in the semantics, breaking compatibility seems unwarranted. --Tyler On Tue, Jan 12, 2010 at 12:54

Re: [UMP] Server opt-in

2010-01-12 Thread Adam Barth
On Tue, Jan 12, 2010 at 2:19 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 12:54 PM, Adam Barth aba...@webkit.org wrote: In the current draft of UMP, the client can opt-in to UMP by choosing to use the UniformMessaging API, but the server is unable to force clients to

Re: [UMP] Server opt-in

2010-01-12 Thread Tyler Close
On Tue, Jan 12, 2010 at 2:44 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 2:19 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 12:54 PM, Adam Barth aba...@webkit.org wrote: In the current draft of UMP, the client can opt-in to UMP by choosing to use the

Re: [UMP] Server opt-in

2010-01-12 Thread Adam Barth
On Tue, Jan 12, 2010 at 2:47 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 2:44 PM, Adam Barth w...@adambarth.com wrote: Let my phrase my question another way.  Suppose the following situation: 1) I'm a server operator and I want to provide a resource to other web sites.

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Adam Barth
On Tue, Jan 12, 2010 at 1:59 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 12:29 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 10:51 AM, Tyler Close tyler.cl...@gmail.com wrote: It's not feasible to remove all ambient authority. For example, the client

Re: [UMP] Server opt-in

2010-01-12 Thread Tyler Close
On Tue, Jan 12, 2010 at 2:57 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 2:47 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 2:44 PM, Adam Barth w...@adambarth.com wrote: Let my phrase my question another way.  Suppose the following situation: 1) I'm

CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Arthur Barstow
This is a Call for Consensus (CfC) to publish the First Public Working Draft (FPWD) of the Uniform Messaging Policy (UMP) spec, latest Editor's Draft at: http://dev.w3.org/2006/waf/UMP/ This CfC satisfies the group's requirement to record the group's decision to request advancement. By

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Adam Barth
Support. On Tue, Jan 12, 2010 at 3:29 PM, Arthur Barstow art.bars...@nokia.com wrote: This is a Call for Consensus (CfC) to publish the First Public Working Draft (FPWD) of the Uniform Messaging Policy (UMP) spec, latest Editor's Draft at:  http://dev.w3.org/2006/waf/UMP/ This CfC satisfies

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Jonas Sicking
I support this. For the record: I have admittedly not been following the recent discussions, but some of it has worried me a bit. I liked how UMP was originally a subset of CORS, in that it gave some amount of compatibility between the two models. In particular the ability for a UMP client to

Re: [UMP] Server opt-in

2010-01-12 Thread Mark S. Miller
Hi Adam, I don't understand this at all. First, as the draft UMP already says, were it not for the need to be compatible with currently deployed browser behaviors, UMP would prefer a short header U: anyway, rather than the unfortunately long Access-Control-Allow-Origin:* in an incompressible

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Mark S. Miller
Support. On Tue, Jan 12, 2010 at 3:29 PM, Arthur Barstow art.bars...@nokia.comwrote: This is a Call for Consensus (CfC) to publish the First Public Working Draft (FPWD) of the Uniform Messaging Policy (UMP) spec, latest Editor's Draft at: http://dev.w3.org/2006/waf/UMP/ This CfC

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Tyler Close
support On Tue, Jan 12, 2010 at 3:29 PM, Arthur Barstow art.bars...@nokia.com wrote: This is a Call for Consensus (CfC) to publish the First Public Working Draft (FPWD) of the Uniform Messaging Policy (UMP) spec, latest Editor's Draft at:  http://dev.w3.org/2006/waf/UMP/ This CfC satisfies

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Tyler Close
Hi Jonas, I too like the subset relationship between UMP and CORS and hope to retain it. AFAIK, the only issue here is whether or not the user-agent can follow a non-uniform redirect. There are two ways to resolve this: UMP forbids following or CORS enables following. Is there any chance of the

Re: [UMP] Server opt-in

2010-01-12 Thread Tyler Close
UMP supports confidentiality where client and server desire confidentiality. I am mystified as to why you might think otherwise. Concern over CSRF does not preclude concern over confidentiality, to the contrary, it requires it. --Tyler On Tue, Jan 12, 2010 at 3:24 PM, Adam Barth

Re: CfC: to publish First Public Working Draft of Uniform Messaging Policy spec; deadline January 19

2010-01-12 Thread Jonas Sicking
On Tue, Jan 12, 2010 at 4:37 PM, Tyler Close tyler.cl...@gmail.com wrote: Hi Jonas, I too like the subset relationship between UMP and CORS and hope to retain it. AFAIK, the only issue here is whether or not the user-agent can follow a non-uniform redirect. There are two ways to resolve this:

Re: [UMP] Proxy-Authorization

2010-01-12 Thread Tyler Close
On Tue, Jan 12, 2010 at 3:04 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 1:59 PM, Tyler Close tyler.cl...@gmail.com wrote: On Tue, Jan 12, 2010 at 12:29 PM, Adam Barth w...@adambarth.com wrote: On Tue, Jan 12, 2010 at 10:51 AM, Tyler Close tyler.cl...@gmail.com wrote: It's

Re: File API: Blob and underlying file changes.

2010-01-12 Thread Chris Prince
For the record, I'd like to make the read atomic, such that you can never get half a file before a change, and half after. But it likely depends on what OSs can enforce here. I think *enforcing* atomicity is difficult across all OSes. But implementations can get nearly the same effect by

Re: [UMP] Server opt-in

2010-01-12 Thread Devdatta
My question, then, is how can a server enjoy the confidentiality benefits of UMP without paying the security costs of CORS?  As currently specced, a server needs to take all the CORS risks in order to use UMP.  That seems unnecessary. The page at http://dev.w3.org/2006/waf/UMP/#security