Opened 12 years ago

Closed 11 years ago

Last modified 11 years ago

#2213 closed Bug (Rejected)

Problem with UDPOpen or UDPRecv an computer with more the one networc card

Reported by: skyteddy <rainer@…> Owned by:
Milestone: Component: AutoIt
Version: Severity: None
Keywords: udpopen udprecv Cc:



the purpose of my program is to collect all sent replies within 15 second of all devices in my network, after my SSDP-Discover via UPnP. Every 3 seconds, I send it again.

My program works on Windows XP, independent how many network cards are installed. In Windows 7 only, if only one network card is installed or active. This means, if all network cards are active, I get no UPnP-Responds. When I disable all network cards (vmware network adapter too!), except 1, my program works in Windows 7 too. the windows firewall is deactivated. no other security suite is installed.

The SSDPdiscover_V1 works as just described above. I use for UDPRecv the same port, which was used for sending.

In SSDPdiscover_V2 I've tried various UDPBinds to catch the incoming UPnP-packets, but nothing works :-(

I've just noticed with dismay, on Windows XP I receive only answers from devices, they are connected on the first network card.

I don't receive anything from the devices, they are connected on the second network cards.

When I want to "read" this devices, I must disable the first network card in Device Manager.

my friend told me, this must be a problem of the UDPOpen. In Java, there is the possibility to add the ip-address of the card, which should be used for the multicast. And I have to send the ssdp-request on each available network card and receive all the packets.

Code the the attached file.

But such a option is not available in UDPOpen. I don't know, where is the bug.

I try to discuss this problem in your and in the German forum, but nobody answered:

it is independent on which computer I try this program. XP, Win 7, x64 or x32.

many thanks in advance

Attachments (1)

SSDPdiscover_V5_bugreport.au3 (7.0 KB) - added by skyteddy <rainer@…> 12 years ago.

Download all attachments as: .zip

Change History (3)

Changed 12 years ago by skyteddy <rainer@…>

comment:1 Changed 11 years ago by Jon

  • Resolution set to Rejected
  • Status changed from new to closed

comment:2 Changed 11 years ago by Rainer <rainer@…>

Why you reject this bug? I need the correct working of this function in 2 of my projects!

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