From alain at knaff.lu Sun Mar 1 10:26:54 2009 From: alain at knaff.lu (Alain Knaff) Date: Sun, 01 Mar 2009 10:26:54 +0100 Subject: [Udpcast] Problems With timeout of satellite transmission In-Reply-To: References: <49A80987.60406@knaff.lu> <49A82C62.4050700@knaff.lu> Message-ID: <49AA54DE.9040800@knaff.lu> Diego Zimmermann wrote: > Sorry, I forgott in the first mail > I'm using udp-sender --async --mcast-data-address 229.1.1.1 > --mcast-rdv-addr 229.1.1.1 --autostart 1 --fec 8x8/128 --max-bitrate 500k > --interface eth1 --portbase 4002 -f announce > and udp-receiver --nosync --mcast-rdv-addr 229.1.1.1 --interface dvb0_0 > --portbase 4002 -f announce Indeed, on a LAN this seems to work (changing just the name of the interface) And the parameters are set up ok for return-channel-less transmission (verified by setting iptables on sender to drop all return traffic: still works). As communication is now purely unidirectional, satellite latency should not make a difference either. So, this is really weird, could you check the settings on your routers, encapsulators, etc. to make sure they aren't dropping any packets along the way? A tcpdump taken at the client, and another one at the server (just ports 4002 and 4003) would also be helpful to see whether anything is lost. However, while running a tcpdump myself, one thing struck me: you set fec to use 8 slices size with 8 redundant packets. This is fine for large files. But for just 1500 bytes (2 payload packets), this is way overkill: indeed, this means that at least 64 packets will be transmitted (8 redundant packets for each of the 8 slices). Of these 8 slices, 6 would be completely useless, as they'd contain _only_ redundant packets, and no data packets. --fec 1x2/128 would be more appropriate. This would still give you 100% redundancy (2 redundant packets per 2 data packets) but be far less wasteful. Regards, Alain From tomislav.parcina at email.t-com.hr Mon Mar 2 08:32:46 2009 From: tomislav.parcina at email.t-com.hr (=?ISO-8859-2?Q?Tomislav_Par=E8ina?=) Date: Mon, 02 Mar 2009 08:32:46 +0100 Subject: [Udpcast] Sending problem In-Reply-To: <49A80A0A.3020905@knaff.lu> References: <49A7ABD8.5070201@email.t-com.hr> <49A80A0A.3020905@knaff.lu> Message-ID: <49AB8B9E.90407@email.t-com.hr> Alain Knaff kaže: > Does the problem also happen with udpcast alone? > > Does it still happen with current versions of udpcast? Hi Alain! I haven't tried to use udpcast alone. To tell you the true I'm not even sure how to do that. Can you confirm that this is udpcast problem? Best regards, -- Tomislav Parčina tomislav.parcina at email.t-com.hr Google talk: parcina80 From alain at knaff.lu Mon Mar 2 09:33:20 2009 From: alain at knaff.lu (Alain Knaff) Date: Mon, 02 Mar 2009 09:33:20 +0100 Subject: [Udpcast] Sending problem In-Reply-To: <49AB8B9E.90407@email.t-com.hr> References: <49A7ABD8.5070201@email.t-com.hr> <49A80A0A.3020905@knaff.lu> <49AB8B9E.90407@email.t-com.hr> Message-ID: <49AB99D0.3080102@knaff.lu> Tomislav Parčina wrote: > Alain Knaff kaže: >> Does the problem also happen with udpcast alone? >> >> Does it still happen with current versions of udpcast? > > Hi Alain! > > I haven't tried to use udpcast alone. To tell you the true I'm not even > sure how to do that. It's easy. On the sender, you say udp-sender -f myfile and on the receiver: udp-receiver -f myfile myfile may also be a device (such as /dev/sda1) You can also use one of the bootimage from http://udpcast.linux.lu , which boots into a menu system that starts udpcast with the appropriate parameters for cloning disks. > Can you confirm that this is udpcast problem? Unfortunately I can't confirm it at this point in time, without any more information. > > Best regards, > > Regards, Alain From silviobandeira at gmail.com Tue Mar 24 08:09:03 2009 From: silviobandeira at gmail.com (Silvio Bandeira) Date: Tue, 24 Mar 2009 04:09:03 -0300 Subject: [Udpcast] INSTALL UDPCAST IN A PARTITION Message-ID: Can we install an udpcast image, so I can boot udpcast in many machines using a local image, instead of booting from CD/PXE ? Thanks in advance. Please reply to this address, i'm not on the list (I will be if I have to :) ) Thanks again. -- Silvio Bandeira -------------- next part -------------- An HTML attachment was scrubbed... URL: From henrique.rodrigues at ist.utl.pt Tue Mar 24 13:57:37 2009 From: henrique.rodrigues at ist.utl.pt (Henrique Rodrigues) Date: Tue, 24 Mar 2009 12:57:37 -0000 (WET) Subject: [Udpcast] INSTALL UDPCAST IN A PARTITION In-Reply-To: References: Message-ID: On Tue, March 24, 2009 07:09, Silvio Bandeira wrote: > Can we install an udpcast image, so I can boot udpcast in many machines > using a local image, instead of booting from CD/PXE ? > Thanks in advance. > Please reply to this address, i'm not on the list (I will be if I have to > :) > ) > Thanks again. Hi, There's an easy way. I use the following GRUB entry to boot UDPcast from GRUB: title UDPcast root (hd0,3) kernel /memdisk.bin initrd /udpflop.img udpflop.img is a floppy image of UDPcast. memdisk.bin is what I use to "launch" udpflop.img. I don't remember how I got that file, but you can just Google for it. Best regards, Henrique Rodrigues -- Henrique Rodrigues http://sodki.org Engenharia Informatica e de Computadores - Instituto Superior Tecnico From alain at knaff.lu Tue Mar 24 14:27:26 2009 From: alain at knaff.lu (Alain Knaff) Date: Tue, 24 Mar 2009 14:27:26 +0100 Subject: [Udpcast] INSTALL UDPCAST IN A PARTITION In-Reply-To: References: Message-ID: <49C8DFBE.8000701@knaff.lu> Henrique Rodrigues wrote: > On Tue, March 24, 2009 07:09, Silvio Bandeira wrote: >> Can we install an udpcast image, so I can boot udpcast in many machines >> using a local image, instead of booting from CD/PXE ? >> Thanks in advance. >> Please reply to this address, i'm not on the list (I will be if I have to >> :) >> ) >> Thanks again. > > > Hi, > > There's an easy way. I use the following GRUB entry to boot UDPcast from > GRUB: > > title UDPcast > root (hd0,3) > kernel /memdisk.bin > initrd /udpflop.img > > udpflop.img is a floppy image of UDPcast. memdisk.bin is what I use to > "launch" udpflop.img. I don't remember how I got that file, but you can > just Google for it. > > Best regards, > Henrique Rodrigues > > Why not load udpcast directly rather than play russian dolls by pretending to boot a floppy? Just point GRUB's kernel and initrd parameters _directly_ to the kernel and udpcast ramdisk: title UDPcast root (hd0,3) kernel /linux initrd /initrd Where vmlinux.bin is the kernel (as downloaded from http://udpcast.linux.lu/current/linux) and initrd is the udpcast ram disk (as downloaded from http://udpcast.linux.lu/current/initrd) Alain From adrianodnu at gmail.com Wed Mar 25 12:25:45 2009 From: adrianodnu at gmail.com (Adriano das Neves) Date: Wed, 25 Mar 2009 08:25:45 -0300 Subject: [Udpcast] Good morning Message-ID: Good morning, I know you have to create the boot in UDPCAST Pendrive? -------------- next part -------------- An HTML attachment was scrubbed... URL: From Gerald.Helm at sjvc.edu Wed Mar 25 20:42:23 2009 From: Gerald.Helm at sjvc.edu (Gerald Helm) Date: Wed, 25 Mar 2009 12:42:23 -0700 Subject: [Udpcast] USB Keyboard support Message-ID: <4910CD45699BE94D865F08CBFF5D8355239C9EB4A1@Mailbox-1.sjvc.net> I am having trouble adding USB keyboard support. Please help. Thanks. Gerald Helm Fresno Campus IT/IS gerald.helm at sjvc.edu Cell # 805-7681 -------------- next part -------------- An HTML attachment was scrubbed... URL: From bertrand.thomas at ac-poitiers.fr Thu Mar 26 20:16:29 2009 From: bertrand.thomas at ac-poitiers.fr (Bertrand THOMAS) Date: Thu, 26 Mar 2009 20:16:29 +0100 Subject: [Udpcast] INSTALL UDPCAST IN A PARTITION In-Reply-To: References: Message-ID: <49CBD48D.9090409@ac-poitiers.fr> udpcast-request at udpcast.linux.lu a écrit : > 1. Re: INSTALL UDPCAST IN A PARTITION (Henrique Rodrigues) > 2. Re: INSTALL UDPCAST IN A PARTITION (Alain Knaff) > > Henrique Rodrigues wrote: >> On Tue, March 24, 2009 07:09, Silvio Bandeira wrote: >>> Can we install an udpcast image, so I can boot udpcast in many machines >>> using a local image, instead of booting from CD/PXE ? > > Why not load udpcast directly rather than play russian dolls by pretending > to boot a floppy? > > Just point GRUB's kernel and initrd parameters _directly_ to the kernel and > udpcast ramdisk: > > title UDPcast > root (hd0,3) > kernel /linux > initrd /initrd > > Where vmlinux.bin is the kernel (as downloaded from > http://udpcast.linux.lu/current/linux) and initrd is the udpcast ram disk > (as downloaded from http://udpcast.linux.lu/current/initrd) > > Alain > Thank you so much, it is so easy this way! Just a problem: I thought I could get a preconfiguration by putting a udpcfg.txt file along with linux and initrd, but it doesn't work, I still get the menu at boot. What is wrong? Bertrand THOMAS From alain at knaff.lu Thu Mar 26 20:33:56 2009 From: alain at knaff.lu (Alain Knaff) Date: Thu, 26 Mar 2009 20:33:56 +0100 Subject: [Udpcast] INSTALL UDPCAST IN A PARTITION In-Reply-To: <49CBD48D.9090409@ac-poitiers.fr> References: <49CBD48D.9090409@ac-poitiers.fr> Message-ID: <49CBD8A4.8060502@knaff.lu> Bertrand THOMAS wrote: > udpcast-request at udpcast.linux.lu a écrit : >> 1. Re: INSTALL UDPCAST IN A PARTITION (Henrique Rodrigues) >> 2. Re: INSTALL UDPCAST IN A PARTITION (Alain Knaff) >> >> Henrique Rodrigues wrote: >>> On Tue, March 24, 2009 07:09, Silvio Bandeira wrote: >>>> Can we install an udpcast image, so I can boot udpcast in many machines >>>> using a local image, instead of booting from CD/PXE ? >> Why not load udpcast directly rather than play russian dolls by pretending >> to boot a floppy? >> >> Just point GRUB's kernel and initrd parameters _directly_ to the kernel and >> udpcast ramdisk: >> >> title UDPcast >> root (hd0,3) >> kernel /linux >> initrd /initrd >> >> Where vmlinux.bin is the kernel (as downloaded from >> http://udpcast.linux.lu/current/linux) and initrd is the udpcast ram disk >> (as downloaded from http://udpcast.linux.lu/current/initrd) >> >> Alain >> > > Thank you so much, it is so easy this way! > > Just a problem: I thought I could get a preconfiguration by putting a > udpcfg.txt file along with linux and initrd, but it doesn't work, > I still get the menu at boot. What is wrong? > > Bertrand THOMAS The udpcfg.txt file goes into initrd, not linux. The easiest way to get it into the proper place is to use the online configurator at http://udpcast.linux.lu/cast-o-matic Chose "initrd (for PXE)". Don't be bothered by the "for PXE" label, it can also be used for the hard disk image. Another way is to not use an udpcfg.txt file at all, but rather supply the parameters on the kernel line, after the name of the kernel. Regards, Alain