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Suggestions for best approach/language for this scenario
by Avi Miller 04 Jun '14

04 Jun '14

Hey LUV’rs and LA'rs, I volunteer for a community/NFP radio station here in Melbourne. We’re currently deploying a new radio automation system, as well as replacing our existing online streaming services. The radio automation system that has a TCP service running on a particular port. Whenever a play event fires in the studio, the automation system sends out the data to anything listening on that port. I have control over what the automation system sends. What I need to do is write an intermediate daemon that connects to the upstream automation system looking for song events (which has an associated duration field) and presents a similar interface to the stream publisher. This is because we don’t use the automation system for every show, so after the event duration expires I want my intermediate system to send currently airing show information instead. This way, the client-side streaming apps will either see information about the song currently being played, or if automation is not active, information about the show currently on air. As an added bonus, I’d like the intermediate daemon to also submit RESTful API requests to a web service online. So, it looks vaguely like this: [Stream publisher] ==> [Intermediate daemon] ==> [Automation system] ==REST=> [web service] I suspect I’ll need a multi-threaded application, with one thread to listen for events from the automation system and two more to send events to the stream publisher and the RESTful service. Given that the majority of my programming experience is in PHP, I’m going to have to learn something new for this. So, I’m looking for suggestions on the programming language and/or tools that would be well-suited for this task. Alternatively, if there is already something that could do this (or be munged to do this), I’m all ears. Thanks, Avi

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Re: Diagnosing System Crashes
by zlinw＠mcmedia.com.au 03 Jun '14

03 Jun '14

Dave Hellewell <dave.hellewell(a)gmail.com> said, >> Power supply is next easiest thing to test if you can find a spare. >> Do the input voltages seem okay? Even if they do it's possible it >> could still be the power supply. >My sensors output is pretty wacky (haven't gotten around to a proper >config), but the BIOS reports numbers that look OK. I have another PSU >here and I'll give that a spin as a last resort before submitting to the >shop. Neither the bios or any software voltage monitoring are any good in diagnosing PSU problems as neither reads voltage continiously. For the same reason most digital voltmeters are no good. What can happen (I have had it twice) is the PSU voltages can spike down very quickly and cause the system untold problems. Such a spike will NOT be picked up by most voltmeters. I have successfully used analog meters to check this though (An AVO). All voltages need to be checked including the 12 Volt line. In both my cases the system lockups were caused by the 12V line droping low (11.2 volts) for only around half a second, causing the hardisks to shutdown. This caused an unrecoverable error from the kernel. The symptoms in my case was an almost complete hardlock up but with the mouse pointer still working. Lindsay

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CPL's "Skymaster" dual ether PCI-E?
by Douglas Ray 03 Jun '14

03 Jun '14

CPL stock a cheap PCI-Express dual UTP gigabit ether card: http://www.cplonline.com.au/skymaster-pci-express-dual-gigabit-ethernet-con… Anyone tried using them in OpenBSD? Can anyone advise chipset, or what manufacturer/model id's it reports, or any dmesg diagnostic? (I currently have some Intel Pro/1000 MT cards, but one has decided to intermittently fail 1GB sync) Thanks, Douglas Ray

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Pre-meeting Korean food?
by Chris Samuel 03 Jun '14

03 Jun '14

Hi folks, If anyone is interested I plan to have dinner at Big Mama's Korean Restaurant on Swanston St. http://www.urbanspoon.com/r/71/1524991/restaurant/CBD/Big-Mama-Melbourne I should be there at 5:45pm. Please let me know if you plan on coming along! cheers, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC

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Re: Cheap Android device recommendations
by Toby Corkindale 03 Jun '14

03 Jun '14

On 3 June 2014 09:17, Davor Balder <dbalder(a)ozemail.com.au> wrote: > I got one betterŠ come to Coles and they have PendoPad which runs Android. > Not sure how much, it used to be under $100. ($150 tops) If you want a budget device, you'll be able to get something super cheap direct from China. BUT: I do recommend reading some reviews around about cheap Android devices. They are usually absolutely *awful* and trying to use one will make you regret saving $100, a hundred times over. But the main reason for concern is that they aren't actually appropriate for use a testing stuff on Android, because these dodgy cheap-arse tablets and phones aren't even properly compliant with the "proper" Android experience. ie. If something works on the tablet, you have no idea if it'll work similarly on real-world Android devices. And if something doesn't work (more likely) you won't know if it's just your tablet, or if it's a problem in your app. -Toby

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iptables rules cannot be loaded at boot time when domain names are used in iptables rules
by Wenjian Bill Yang 03 Jun '14

03 Jun '14

Hi, I have the following rule in my iptables, and all chains are empty when the server is booted. -A INPUT -s yahoo.com -j DROP Or -A INPUT -s yahoo.com -p tcp --dport 21 -j DROP if I manually run /etc/init.d/iptables start, all iptables rules can be loaded. Also if an IP address is used as follows, iptables can be loaded at boot time. -A INPUT -s 66.33.210.0/24 -j DROP I have checked a few books and websites, they all show that domain names can be used in iptables rules. Thanks.

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Re: Cheap Android device recommendations
by Avi Miller 02 Jun '14

02 Jun '14

Hey, On 3 Jun 2014, at 9:17 am, Davor Balder <dbalder(a)ozemail.com.au> wrote: > I got one betterŠ come to Coles and they have PendoPad which runs Android. Nifty, thanks for the tip. Cheers, Avi

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Re: iptables rules cannot be loaded at boot time when domain names are used in iptables rules
by Russell Coker 02 Jun '14

02 Jun '14

On Mon, 2 Jun 2014, James Harper <james(a)ejbdigital.com.au> wrote: > Be aware though that starting your firewall after your network comes up is > probably not a wise thing to be doing. Yes, after the network is up but before the daemons you want to protect would be ideal. Also if your system isn't configured to go to single user mode if the firewall script fails (AFAIK no-one does this) then a problem with the firewall script (such as an unexpected DNS problem in this instance) would break it. With the increasing use of https and cloud servers some types of firewalling are becoming less useful. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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EFA's Creating the Web We Want
by Jacinta Richardson 02 Jun '14

02 Jun '14

This might be of interest to some folk. Electronic Frontiers Australia, in partnership with ThoughtWorks Australia presents: Creating the Web We Want * Time & Date: 11:30am, 17th June 2014 * Venue: Melbourne Convention Centre, 1 Convention Centre Place, Southbank (click for map) <https://www.google.com.au/maps/place/Melbourne+Convention+%26+Exhibition+Ce…>. * Cost: FREE * Registration: Not Required Speakers * Keith Dodds <https://www.linkedin.com/pub/keith-dodds/0/410/a82> - Director, Client Relations, ThoughtWorks Asia Pacific (Moderator) * Senator Scott Ludlum <https://en.wikipedia.org/wiki/Scott_Ludlam> * Jon Lawrence <https://www.efa.org.au/about/board/jon-lawrence/> - Executive Officer, Electronic Frontiers Australia * Tom Sulston <http://au.linkedin.com/pub/tom-sulston/0/411/178> - Principal Technical Consultant, ThoughtWorks Revelations from whistleblower Edward Snowden have clearly demonstrated that governments around the world have been engaging in dragnet-style mass surveillance for years. We know that intelligence agencies, including the US National Security Agency (NSA), the UK's GCHQ and Australia's Signals Directorate have been intercepting and storing the records of hundreds of millions of our phone calls, text messages, emails, web searches, website visits, instant messages, and social media activity. We know that these agencies have been sharing our information with other governments, large corporations, and non-security organisations. Governments have justified this mass surveillance on the grounds of "national security" against "terrorism". Yet there is no evidence that this disproportionate intrusion into our private lives has stopped or foiled even one terrorist act, despite the vast financial and social cost. What these government activities have done is to build an extremely effective surveillance infrastructure which police states of the past, present, and future could only envy. It is our duty to redress this illegal and immoral societal imbalance. What legal, social, and regulatory policy reforms are necessary to safeguard our right to privacy? What can we do both now and in the future to protect our private communications from dragnet government surveillance? What level of digital spying is acceptable in an Internet where our privacy is valued? This free and public forum is part of the Agile Australia conference. It will be a thought-provoking examination of privacy issues vital to the future of digital freedom. It will include a review of available technologies to resist dragnet surveillance, and global initiatives to strengthen individuals' right to privacy, as enshrined in the 1948 Universal Declaration on Human Rights. It will be a call to join and shape local and worldwide activities to oppose mass government surveillance. More information: https://www.efa.org.au/events/web-we-want-2014/

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10GigE
by Russell Coker 31 May '14

31 May '14

Has anyone had any experience with 10GigE? I'm not after anything at all complex, just a single server that needs something a little faster than GigE talking to a single switch that can spread the bandwidth over 12+ GigE ports. As an aside, I think it would be nice if someone developed an Ethernet card and switch as one combined device. It would be a PCIe card that looks to the system like a regular Ethernet port connected to a 4 port switch with the only software visible difference being that it had 4* the bandwidth of a regular Ethernet port. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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