November 2006 - Udpcast

Darwin build fixes patch
by Devin Bayer 18 Apr '07

18 Apr '07

Hello. Thanks for developing udpcast. It almost compiles on my mac. But I have to make a few small changes. 1.) the linker doesn't support the -Wl,-warn-common option 2.) what is malloc.h? It isn't needed. 3.) struct ifreq is variable size, so we must use _SIZEOF_ADDR_IFREQ (), not pointer arithemetic 4.) some endian issues Thanks, Devin Bayer

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Exiting udp-receiver or reboot machine after a certain amount of time without transfer activity
by Jens Breuer 09 Feb '07

09 Feb '07

Hello, I am curious whether there is an commandline option which could instruct udp-receiver to exit after a certain amount of time without any udp-sender activity or generally when the transfer process doesn't start. At least I could not find anything in the documents. We use udpcast together with PXE-boot and sometimes some machines are simply not responding to the sender (why is yet unclear). After manually restarting the machines it is usually the case that the machines to be imaged are responding again and everything is well. Unfortunately it could be the case that there are machines to be imaged which are placed in locked rooms and so it is impossible to restart them manually. Regards Jens

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optiplex 745 and keyboard problems
by Chad Brogan 30 Jan '07

30 Jan '07

I've done some googling and found a few posts which seemed to indicate that udpcast shouldn't have problems working with a usb keyboard. Nonetheless, when I boot a pc from the cd or pxe, the keyboard does not work. Where should I start in troubleshooting this problem? I am very much a linux noob, but if someone can get me started, I believe I can stumble my way through it. Thanks. Chad

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keyboard USB
by Ronald Scholz 30 Nov '06

30 Nov '06

Hi, UDP CAST does not function with keyboard USB. Exists some solution for the problem? Ronald Scholz

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(no subject)
by ben jouida mohamed ali 28 Nov '06

28 Nov '06

Salut, nous somme en train de réaliser un PFE en réseau informatique concernant le clonage massif a partir d'une interface web personnel, pour cela nous avons besoin de votre aide et de vos connaissances a propos des notions de partimage et UDPcast et drbl... Merci d'avance Mr. ___________________________________________________________________________ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses http://fr.answers.yahoo.com

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loading modules per default
by U. Bauermann 14 Nov '06

14 Nov '06

Hello I want to load some kernel modules per default. I have add lines to "/init" in the /usr/lib/udpcast/tmpl-tree. ----- Ex.: !/bin/sh #mount -t devfs none /dev modprobe sata_sis <--- This is my new line modprobe floppy modprobe uhci-hcd modprobe ohci-hcd modprobe usbkbd mount -t sysfs none /sys /bin/udpc_dialog init exec /bin/init ----------- After making the initrd-image, and booting per PXE this image, - i have include a prescript to make a pause before the menue appaers (prescript: read dummy (for continue after keystroke) At this time i activate a virtual console on ALT-2 and with lsmod my module isn't in memory. How/where can/must i include my modprobe line to load it as soon as possible? greeting Uwe

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UDP Multicast Programming question
by tovis 07 Nov '06

07 Nov '06

I'm C a programmer, looking for Linux UDP multicast programming documentation. Early I'm write some UDP multicast program for WIN32, using API, it is working on NT4.0 (loop back does not work, you can not switch off own packets), W2K and WINXP - where I/O completion port is exist. In WIn32 API you can simply setup an UDP socket, bind on apropriate interface address and after using IOCTL set ADD_MEMBERSHIP/DROP_MEMBERSHIP you can "join" to many groups _ at most I have tested is 4 groups like 224.0.0.xxx on the same port number (for example 6000). In Linux I had managed to use multicast UDP port but, it seem to be that it could not "join" to many groups, to receive packets, only one and you should bind on it (for example on 224.0.0.10:6000)! Is this right? One UDP socket could receive UDP packets only from one multicast group in Linux? Sincerelly tovis

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