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Comment Re: SIP? a single RFC? LOL! (Score 2, Informative) 220

Hahahahaha !

SIP a single RFC? Can you imagine the number of SIP related RFCs and associated drafts? SIP WAS simple, it is now a mess. Even if we restrict to RFC 3261, if you can asnwer the following questions you are already a MASTER in SIP:

- what is the difference between request URI and the "To" header? Are they redundant?
- what is the difference between the "Contact" header, the "P-Asserted-Identity" header and the "From" header?
- what is the loose routign mechanism and what is the relationship with the "Via" headers?
- what is the need for "from tags" and 'to tags".

If we go a bit further:

- Why is SIP/SIMPLE do we need to introduce an "etag" and why not resuing the callid ?
- etc.

We are a company that is based on SIP and very in favor of this protocol mostly form market reasons but one should not be blind: this protocol has its problems like any other. At the beginning, it was sooo "simple" that it could not even support "announced transfer" or line supervision which is a must for corporate telephony then the real people jumped in and added what it takes to make it usable and added complexity.

Even the big telco that are hated so much in this forum jumped in and created the IMS standards based on SIP (under the ETSI Umbrella = European ...). They took it to the next level of complexity but they NEEDED IT because they are the guys who enable you and me to call from A to B without even thinking about how this is done (since more that 100 years).

If you imagine one second that you can only read ONE RFC to start working on the real SIP world, you are VERY WRONG (see RFC 3581, RFC2327, RFC 3264, RFC 3550 + all the RFC dedicated to packetization, SIP/SIMPLE, MESSAGING, ....)

Now if you compare SIP with H.323, I agree that initially, one can see a lot of advantages.
- H323 has a stupid protocol layering
- slow dialog establishment, etc?
and although they have improved this, this is still not perfect but they have advandages as well:

- camera control and double video streams are a reality in H.323 world wher in SIP it is still on paper only and badly documented.
- screen and application sharing are a reality on H.323 world. They are non existant in SIP
- H.323 has defined a clean standard for NAT traversal where SIP has a set of "best practices" spread in various RFC (keepalive, rport, symetric RTP, etc.).

if you cannot read the ITU standards that is basically because:
- most of them need to be bought
- they have a strong culture of separating the function and the encoding, which renders them difficult to grasp for field hackers
- ITU protocols are often based on ASN.1 BER encoding and therefore are compact an binaries and cannot be test with a simple TELNET connection, which seems to trouble a lot of Internet gurus.



Submission + - Side By Side assemblies: DLL Hell 2.0 (

neutrino38 writes: This is an alert for all developers using Microsoft Visual Studio 2005.

At the beginning of January, Microsoft issued a security fix for Visual Studio 2005 forcing the use of news dynamic libraries (DLLs) by all application compiled with this IDE. Basically, the application compiled with Visual Studio 2005 will not work anymore on ordinary (non dev) PC unless the newer DLL are to be installed. And we found out that happened on fully updated PCs. I posted a detailed article here: for those needing more technical details.

For those who are not familiar with the Microsoft world, native microsoft applications written in C++ rely on dynamic libraries. Two of them are famous or infamous: MSVCRT.DLL and MFCxx.dll. Because of the evolution and other security fix, multiple version of these DLL were often present in the system causing application instability. Where Linux resorted to some simple suffix notation on the dynamic libraries, Microsoft created a new beast in 2001: the Side By Side assemblies These are basically DLLs with a comanion XML files that identify them. The XML file contains a digital signature and when the system binds these DLL dynamically to an application, it checks the match and check that the signature of the DLL matches the DLL itself.

When everythings runs well, this is pretty transparent. But when issues arises, it becomes excruciatingly difficult to troubleshoot and fix. DLL hell is not over.

Submission + - Minature Stonehenge Discovered In Wiltshire ( 1

CmdrGravy writes: Archaeologists claim to have found a "minature stonehenge" nearby the larger and better known one. The archaeologists claim that hewn into the living rock is the legacy of an ancient race of druids. Dr Tufnell the principal archaeologist responsible for the find went on to say
"Mini Stonehenge! 'Tis a magic place where the moon doth rise with a dragon's face. Mini Stonehenge! Where the virgins lie and the prayers of devils fill the midnight sky"
No one seems quite sure what he meant by that but futher details will be published in full, soon.

Comment Re: Technology matters (Score 1) 259

I disagree with the previous posts. In that case, technology matters.

A good city wide network should

- handle proper user density
- have a good coverage
- handle multi-media application such as audio / video over IP
- terminal should have a good battery life and reasonable costs

Please note that

- Wifi is certainly not designed to handle user density unless the number of access point is high. Until 802.11n, all users share the same radio channel in a pseudo random way. No frequency allocation,
- the above characteristics makes current wifi standard unfit for true bidirectionnal application such as video over IP as we do not have a true two way simultaneous communications. Even with 802.n, the number of available frequency is so few that only a few people would really be able to beneficiate the proper quality. This does not match the need of high density areas.
- it is a known fact that Wifi has not been designed with battery life in mind. A lot of wifi equipped terminal makers are struggling with this issue.

When comparing the other potential tehcnologies : 802.20e (Wimax) and 4G / LTE, there is no much choice

- 4G / LTE has the expected characteristics but is so complex that it is out of reach of medium sized organisation.
- only Wimax stand a chance.

Then you have to deal with safty regulation on radio protection.

Yes, technology does matter in that case.

Comment Re: Giant assholes from space! (Score 1) 282


They produced Kazaa the mother of all malware

Then Skype which is wonderful (and they promised to to be malware free this time) but they sold it without selling the core technology so they basically screwed the buyer (eBayer)

Then they push the big red button ...

Wow ...

The're good but I dont like them. The only positive thing is that ebay can now see how it feels when having a problem with a buyer.

Comment Re:This is the last thing Google needs... (Score 1) 361

Exactly. Assuming that Theora is better in terms of quality, HTML5 designers and implementor need to understand that some level of backward compatibility is needed so HTML5 can reach the masses and not repain a geek feature.

Making ogg / theora mandatory is not the issue BUT

First, we need the tag to be able to render FLV in both VP6 / VP7 and H.264 contents.

Then of course support MP4 containers / 3GP2 files for mobile developments.

As a transitional phase, a plugin system would allow any codec provider to add support for a particular codec / container.

And finally, would it be good as a fight to ask for more favorable licencing terms on H.264 codec ?

The Internet

Submission + - Future of a "secure" internet?

An anonymous reader writes: I know there are various file-sharing platforms. With BREIN trying to outlaw linking to copyrighted materials, and Microsoft assuming your content is infringing unless verified by them, it seems that their holy dystopia is a world where you have to get stuff signed by a Trusted Third Party before you can even put it on your homepage.

How would you explain to a government agency whether legally mandating a Trusted Third Party is a good or bad idea?
Assuming apache becomes mandated in certain jurisdictions to only serve up signed content (even to private networks) what could this do to the development of web applications?

Submission + - Istanbul face recog cameras scan 15000 faces/sec 2

An anonymous reader writes: Istanbul's popular (and crowded) Istiklal shopping, cafe and restaurant street is being outfitted with 64 wirelessly controlled, tamperproof face recognition cameras attached to a computer system capable of scanning 15000 faces in a moving crowd per second for a positive match. The Samanyolu article (badly translated by Google) states that 3 cameras are in place so far and that if trials are successful, this will mark the first time such a system, previously used by Scottland Yard and normally reserved for indoor security use, is put to use in a public outdoor setting. It also notes that each camera controlled by the system is capable of "locking onto" the faces of known criminals and pickpockets detected in the crowd and "tracking" their movements for up to 300 metres before the next, closer placed camera takes over.

While the article doesn't state it outright, it would appear likely that the outdoor face recognition system, if "successful", will be expanded to other crowded areas of Istanbul as well, which has already seen a dazzling increase in the number of installed plain-vanilla (non face-recognizing) CCTV cameras in recent years.

This comes after Istanbul's two signature Bosphorus bridges have become passable by vehicle with a mandatory vehicle windscreen mounted electronic pass only, subway and bus tickets in the city have gone electronic, vote tallying in municipal and national elections has become fully computerized and future plans for mandatory biometric ID cards for all Turkish citizens have been announced by the government.

The ruling "moderate Islamist" AKP party appears to frame these and other e-government initiatives as "keeping step with the times", "keeping step with other major world cities" and "making living safer, easier and more efficient through the targeted use of electronic technology".

Its secular critics on the other hand argue that everything and everyone under the sun is rapidly becoming "electronically trackable" thanks to the omnipresence of mobile phones and gratuitous overuse and overapplication of these installed electronic systems, and that these systems will, eventually, form a dense surveillance grid that could turn daily life for Turks (and secular Turks critical of the current government in particular) into living in a veritable Big Brother House.

Is the historic city of Istanbul, which will be the European Capital of Culture
in 2010, turning into the new London?

Submission + - Safari 4's Messy Trail (

Signum Ignitum writes: Safari 4 came with a slew of cool new features, but extensive data generation combined with poor cleanup make for a data trail that's a privacy nightmare. Hidden files with screenshots of your history, files that point back to webpages you've visited and cleared from your history, and thousands of XML files that track the changes in the pages in your Top Sites can add up to gigabytes of information you didn't know was kept about you.

Comment Re: Great post indeed (Score 1) 343

These are very good arguments ...

I was more or less in favor of HADOPI (not the police side of it but the fact that it was a way to punish minor offences without going the full trial / fine even prison stuff). Now I must agree more or less with the parent post.

By rejecting HADOPI, this means that copying digital music, pictures and text is legal as long as it is released to the public.

- One alternative business model proposed was the global licence.
- are they others?

You have to be aware of the very deep consequences of permitting free copy of existing work as long as it can be digitalize. What limit should we put to this new freedom?

If we do not put any limit:

1- for artist, they will be bound to make live performances to earn some money which is a good thing. However to be able to live, a large chunk of them will "sell" their services to advertisment copanies or marketing companies. Music will become either a free art or a marketing addons.

1a - iTune music store may lower the price but not disapear as it provides a distribution service but a Deezer and other free alternative will become dominant.

2- Classical music hum ... fewer symphonic orchestra

3- what about painting and photograhies? This mean that digital copies of pictures.

4- How will be movies financed if they can be legally leaked to the Web? Is a global licence enough to cover this? Does it mean that the movie producers will be directly paid by the government?

5- Software will be able to be duplicated for free. No Microsoft anymore. Great for Linux fans but what about the general public? Software product will disapear. SaaS and Open Source + paid service will become the dominant model as this will the only source of revenue.

6 - newspaper will dies more quickly. Is it a problem?

I still beleive that there must be some limit to this copy freedom. But which one?

Comment Re:Off with their heads! (Score 1) 379

Yes and no ...

First of all, I would agree to say that some of his former public behavior and comment are at least displaced. A person obtaining such a position should be able to control himself. Secondly, his way of locking power puy putting friends everywhere and trying to be saturate the medias and communications with his personal presence is very perverse as it gives the impression the French regime is slowly turning into an autocratic one, leaving democratic principle behind.

Despite all this, some aspects of his tenure are ignored in your post.

You might remember former government with nostalgia, I don't: Chirac might be remembered as a nice human guy that had the vision to oppose to Irak war but he was also an old style politician, channeling public monies into his political party (when he was mayor of Paris) and getting unclear counterparts. His government was prerry good at pointing some fundamental French weakness but did nothing serious to address them.

At least, Sarkozy is trying. His govt initiated major reforms regarding retirement, hostpital, uiniversty and everybody knows that it is very important for the country. Even the so despited HADOPI law has the merit to put on the table an issue that is most of the time discussed only in geek circles.

You have to recognise also that there is a poisonous atmosphere in French public opinon where Sarkozy's massive media presence (even in lefitst press) has generated a massive rejection. The problem with this is that people are unable to think clearly and discuss calmly about positive or negatve aspects of the reforms (and there are actually positive ones in my view). Your angry post is a living proof of this and a lot of people do the same. I blame Sarko directly for this reaction: it is the result of his communication strategy that leave no space for anybody.

Finally, I feel very inconfortable with the way that your post or other strong minded opinons about the French president. Political views are sided but ought to be more polite. Politness put a necessary distance that enable to have a clearer view of the real issues. And those are not related with the size of the head of state nor with the fact that he is qualified to work this toilet paper.

Comment Re: Yes Money = Money! (Score 1) 203

Finally we can see here the limits of the so called "Internet Model" were company provide services for free in return for advertisments. Maybe the entry of devevelopping world in the Web arena will promote back the old reasonnable model where you actually sell something (a good or a service) and customers buy if it meets their need with at the proper price point

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It was pity stayed his hand. "Pity I don't have any more bullets," thought Frito. -- _Bored_of_the_Rings_, a Harvard Lampoon parody of Tolkein