[Ndn-lib] ndn-js proxy crash FYI
jburke at remap.ucla.edu
Fri Mar 15 15:02:36 PDT 2013
As far as possible, it needs to be resilient for Sunday-Tuesday, though
From: Alexander Horn <alexnano at ucla.edu<mailto:alexnano at ucla.edu>>
Date: Fri, 15 Mar 2013 14:59:40 -0700
To: Alex Afanasyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Cc: "ndn-lib at lists.cs.ucla.edu<mailto:ndn-lib at lists.cs.ucla.edu>" <ndn-lib at lists.cs.ucla.edu<mailto:ndn-lib at lists.cs.ucla.edu>>
Subject: Re: [Ndn-lib] ndn-js proxy crash FYI
yes of course - we did this w/ video publishing on appboxes - but only after we tested it and got the bugs out for 6+ months :)
meanwhile, it's still early days for this (traffic/usage wise) - so it's useful to have it crash so we find this stuff.
if it gets to be an issue for stability, i'll wrap in while loop.
On Fri, Mar 15, 2013 at 1:26 PM, Alex Afanasyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>> wrote:
I guess it may not be a good idea for the development stage, but why not to wrap ws-proxy in some watchdog app (e.g., bash script like while true; do node <proxy>; sleep 1; <email somebody>; done) ?
This is what I approximately do with macports version, but relying on OSX watchdog capabilities (launchd).
On Mar 15, 2013, at 1:18 PM, Alexander Horn <alexnano at ucla.edu<mailto:alexnano at ucla.edu>> wrote:
it's great to see ndn-js getting used in multiple projects.
ws-proxy is pretty stable on the app boxes... yet last night, after a few weeks of uptime the ws-proxy on UCLA app box crashed.
ccndstatus indicates route to hub was still up; box appeared normal - ccnd & route up, online... just no ws-proxy.
The only thing different about this app box, is it's directly communicating w/ Wentao's latest ndn-js client for BMS/repo data. http://borges.metwi.ucla.edu/ndn-sensor/status.html
I have full packet capture via ws-proxy logging (15MB) if wanted; meanwhile here's stderr:
else throw new Error('not opened');
Error: not opened
at WebSocket.send (/home/localadmin/NDNAppBox/installer/ndn-js/wsproxy/node_modules/ws/lib/WebSocket.js:175:16)
at Socket.<anonymous> (/home/localadmin/NDNAppBox/installer/ndn-js/wsproxy/wsproxy-tcp.js:101:7)
at Socket.EventEmitter.emit (events.js:96:17)
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