Udpcast December 2007

udpcast@udpcast.linux.lu

3 participants
4 discussions

throttle output of udp-cast
by David Crider 23 Sep '08

23 Sep '08

Is it possible to do dynamically throttled UPDcast transmission? We need to throttle the data flow to a Logic Innovations IP encapsulator (with LI's documentation attached with their permission). The udpcast mutlticast address is considered a single route to the IPE. The IPE sends out flow-control messages (described in document) that shows how many bytes are available for traffic for each route every 100 milliseconds in a multicastand comes from a user specified multicast of its own. Attached is the LI document, again with the manufactures permission. Also, you can contact Theo Aukerman, taukerman(a)logici.com for any additional info. I'm asking these questions because IF this is possible, then this would be an almost complete framework for an open source Data-casting network, and can be used for over the air data-broadcasting from any DTV transmitter or any other system with null packets. I currently work as an engineer for a TV station that does data transmission, but would like to move to an open source model.

2 1

Failed to compile udpcast 20070602 with gcc 3.22
by Steven Shiau 31 Dec '07

31 Dec '07

Hi, I am having a problem to compile udpcast 20070602 with gcc 3.22. After I ran ./configure then make I got this error messages: ------------------------------------------------ gcc -g -O2 -Wall -Wall -Wstrict-prototypes -Wdeclaration-after-statement -Wshadow -DBB_FEATURE_UDPCAST_FEC -D_FILE_OFFSET_BITS=64 -DUSE_SYSLOG -DUSE_ASSEMBLER -O6 -DNO_BB -I. -I. -c -o udp-receiver.o udp-receiver.c cc1: unrecognized option `-Wdeclaration-after-statement' make: *** [udp-receiver.o] Error 1 ------------------------------------------------ Does anyone have similar problem ? Thanks in advance. -- Steven Shiau <steven _at_ nchc org tw> <steven _at_ stevenshiau org> National Center for High-performance Computing, Taiwan. http://www.nchc.org.tw Public Key Server PGP Key ID: 1024D/9762755A Fingerprint: A2A1 08B7 C22C 3D06 34DB F4BC 08B3 E3D7 9762 755A

2 5

problem with SAS modules
by eixam.ma1＠upc.edu 30 Dec '07

30 Dec '07

Hi, I'm trying to get udpcast to work via PXE with our machines. Our SEAGATE ST973402SS (SAS) harddisks are not detected automatically by the udpcast linux kernel, which I downloaded from http://udpcast.linux.lu/20070622/linux > From the output of dmesg, SCSI subsystem initialized Fusion MPT base driver 3.04.01 Copyright (c) 1999-2005 LSI Logic Corporation and the output of lsmod, I am guessing that the right module for the HD is 'mptsas'. Hence, I guess I need to compile a kernel for udpcast. I read in your website that one should use your boot image generator. However, this tool is only distributed as a RPM binary. When using Debian's 'alien' tool to convert the RPM to a .deb package, I get: dpkg-gencontrol: error: current build architecture amd64 does not appear in package's list (i386) which makes sense, since our arch is amd64. What's the most intelligent way to go from here? Should I get a hold of the sources for udpcast-mkimage-20070622-1.i586.rpm to build udpcast-mkimage myself? Where are the sources available? Is there an easier way to go about all this? Thanks a lot, /P

2 1

deactivate bootp?
by Markus Forster 30 Dec '07

30 Dec '07

Hello, i builded a initrd for udpcast with cast'o matic and one with the command line tool. With both initrd linux trys to configure ip settings with bootp, but i have no bootp server in the network. Can i deactivate it or change it to dhcp? In config file the makeImage program is dhcp switched to "yes" I tryed also to change the dhcpd.conf with the two parameters: allow bootp; allow booting; but no success. Any Ideas? kind regards, Markus

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Udpcast December 2007