how to program uPnP?

[swim]

Hi,

Can I program via uPnP to find any machine's IP and port on my local net which supports uPnP?

Thanks advanced.

 

[whosrdaddy]

of course you can.

all you need to do is do a UDP multicast to address 239.255.255.250 on port 1900.

you can use Indy scoket components to achieve this.
to know more about uPnp look here:

http://en.wikipedia.org/wiki/UPnP

Cheers,
Daddy


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[swim]

I used UDP multicast to address 239.255.255.250 on port 1900 and sent the string as:

tmpstr:='M-SEARCH * HTTP/1.1'#13#10
+'HOST: 239.255.255.250:1900'#13#10
+'MAN: "ssdp:discover"'#13#10
+'MX: 3'#13#10
+'ST: upnp:rootdevice'#13#10#13#10;
UDPClient.Send(tmpStr);

But I didn't receive any reply via UDPServer.UDPRead. My UDP Server listen at 1900.

Any help?

 

[whosrdaddy]

2 questions, do you have uPnp devices in your network? if so, how are they connected? (hub, switch,...) in case of managed switches, is multicast allowed?...

-----------------------------------------------------
What You See Is What You Get
Never underestimate tha powah of tha google!

 

[whosrdaddy]

found a tool that discovers uPnp devices:

http://noeld.com/dl.asp?path=upnptest.zip

try and see if it finds anything...

-----------------------------------------------------
What You See Is What You Get
Never underestimate tha powah of tha google!

 

[swim]

Oh, yes. I used Plug-and-Play Tester(

http://noeld.com/programs.asp?cat=dstools#UPnPTest)

and got:

Description: High Speed USB Print Server
DeviceType: urn:schemas-upnp-org:devicerintServer:1
FriendlyName: Print Server PS-22E21D
Manufacturer: D-Link
ManufacturerUrl:

http://www.dlink.com/

ModelName: DP-301U
ModelNumber: 2.10 (2006-03-24)
ModelURL:

http://www.dlink.com/

PresentationUrl:

http://202.112.18.138/

SerialNumber:
UDN: uuid:001B1122E21D-0
UPC:

Multicast allowed.

 

[whosrdaddy]

after some searching, found this link:

http://forums.whirlpool.net.au/forum-replies-archive.cfm/384238.html

this guy uses the SDDP service from microsoft(VIA COM) to detect routers.

maybe this will help you

-----------------------------------------------------
What You See Is What You Get
Never underestimate tha powah of tha google!

 

[swim]

Thanks for whosrdaddy, I'll try it.