Die Suche ergab 17 Treffer

von fernando
16. Jan 2008 16:00
Forum: Praktikum: Internet
Thema: problems ssdp advertisement
Antworten: 1
Zugriffe: 1163

Re: problems ssdp advertisement

Hi, I don't think SSDP has anything to do with your null pointer error. Actually, I am sure it has nothing to do with it . So, you'll have to check your code... Regarding the NT and USN fields: check page 13 of the UPNP device architecture, where it explains the Notify ssdp:alive. There you can see ...
von fernando
15. Jan 2008 17:25
Forum: Praktikum: Internet
Thema: Behavior of Control Point
Antworten: 2
Zugriffe: 1009

Re: Behavior of Control Point

...And I forgot to answer this: "Is it correct, that the Control Point sends Notifies and answers M-Searchs in order to be discoverable in the network?" The control point doesn't have to be discoverable, it must be able to discover the devices. ALL OF THEM. The devices are the ones that should be di...
von fernando
15. Jan 2008 17:12
Forum: Praktikum: Internet
Thema: Behavior of Control Point
Antworten: 2
Zugriffe: 1009

Re: Behavior of Control Point

Hello, First of all, a couple of comments regarding roles of devices and control points, that I believe will help clarify the problem: Control points are clients , and the Devices are the servers providing/offering a given functionality. That's why everything that is a upnp device must publish an xm...
von fernando
15. Jan 2008 16:36
Forum: Praktikum: Internet
Thema: IMPORTANT: Deadline for the second assignment
Antworten: 0
Zugriffe: 792

IMPORTANT: Deadline for the second assignment

Dear Students,

Together with my colleague Dr. Aitenbichler, we've decided to allow the exercises to be turned in until Friday 18.01.2007 midnight.

However, if you submit the exercise today, it will be taken into account for the correction.

Best regards,
Fernando Lyardet
von fernando
9. Jan 2008 13:53
Forum: Praktikum: Internet
Thema: USN Field in SSDP Search Response ?
Antworten: 2
Zugriffe: 1611

Re: USN Field in SSDP Search Response ?

Hello, A few details following another question from today's Q&A: Response to an "ssdp:discover" event: Answer is via unicast UDP, by sending it directly to the device that sent the M-SEARCH (for details on how to get that address see the other especific posting). Be careful that there are 2 cases: ...
von fernando
9. Jan 2008 11:42
Forum: Praktikum: Internet
Thema: Windows Firewall settings for UPnP
Antworten: 0
Zugriffe: 949

Windows Firewall settings for UPnP

Hello, If you are using a firewall, its settings may affect the tests. How to set the windows firewall for upnp is described here: http://technet.microsoft.com/en-us/library/bb490616.aspx#EFAA . Although it is specific for the Microsoft UPnP framework, the settings are similar. Regards, Fernando
von fernando
9. Jan 2008 11:26
Forum: Praktikum: Internet
Thema: M-SEARCH: to which Addr should I send the HTTPMU Response?
Antworten: 0
Zugriffe: 813

M-SEARCH: to which Addr should I send the HTTPMU Response?

Hello, Today in the Q&A there was a question regarding HTTPMU responses. The specification states: "To be found, a device must send a UDP response to the source IP address and port that sent the request to the multicast channel" . The specification is correct, but can be confusing. Here's a code exa...
von fernando
21. Dez 2007 15:27
Forum: Praktikum: Internet
Thema: USN Field in SSDP Search Response ?
Antworten: 2
Zugriffe: 1611

Hello, [font=Courier New] 1) How often and with which values must a device/service answer to a search request which it matches? [/font] To answer, I'll refer to the Upnp Documentation (upnp Device Architecture 1.0 - Document revision date 20.07.2006) About How Soon: PAGE 14: "Advertisements in the i...
von fernando
19. Dez 2007 11:02
Forum: Praktikum: Internet
Thema: UPnP Tools in Java
Antworten: 6
Zugriffe: 3173

The old Java-based upnp Toolkit from Intel is available on the lecture notes page of the Internet Praktikum.
von fernando
12. Dez 2007 00:55
Forum: Praktikum: Internet
Thema: UPnP Tools in Java
Antworten: 6
Zugriffe: 3173

Linux Support:
Porting of the intel upnp sdk : http://linuxdevices.com/links/LK9819585123.html (that points to http://upnp.sourceforge.net/.

Also: http://pupnp.sourceforge.net/
von fernando
4. Dez 2007 13:18
Forum: Praktikum: Internet
Thema: UPnP Tools in Java
Antworten: 6
Zugriffe: 3173

Hi,
I will post the version of the java tools I have

Fernando
von fernando
4. Dez 2007 13:15
Forum: Praktikum: Internet
Thema: Problem to assignment 2
Antworten: 1
Zugriffe: 1215

Hi, 1) Good question. The control point can be a device also, but under Upnp doesn't have to be. It can be a control point only. However, it must be discoverable and provide a description but no services or notifications, that's all. Actually, if you make the device work first, it should be no probl...
von fernando
23. Nov 2007 11:40
Forum: Praktikum: Internet
Thema: HTTP Persistent Connections
Antworten: 0
Zugriffe: 1068

HTTP Persistent Connections

Hi, Last class there was an interesting question regarding the interaction between a server and an application -browser for instance-, and how do they decide to close the connection. The procedure is rather well defined, and is documented in the HTTP RFC, in the following section: http://www.w3.org/...
von fernando
6. Aug 2007 02:36
Forum: Praktikum: Internet
Thema: Wo bleibt assignment 3?
Antworten: 25
Zugriffe: 5792

The grades are available at:

http://elara.tk.informatik.tu-darmstadt ... s/ss07/IP/

There should be also a printed version in the corridor.

Best regards,
Fernando Lyardet
Internet Praktikum SS07
von fernando
13. Jul 2007 14:37
Forum: Praktikum: Internet
Thema: Wo bleibt assignment 3?
Antworten: 25
Zugriffe: 5792

Hello,

I put some slides redarding SSDP, and how to create, send and listen using UDP multicast sockets.

Best regards,
Fernando

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