#dat

(DouglasMeyer) Hello. I'm quite intrigued with the Dat concept, but I've only seen it working in the beaker browser. Does it work in other modern browsers? I've tried `dat-js` and `dat` (through webpack), but I think they ran into issues around signaling. Any examples I should try working off of?

DouglasMeyer: I only know of https://github.com/bunsenbrowser/bunsen for Android ... although there was some new about Brave maybe implementing Dat

There was https://github.com/datproject/dat-js -- but it claims to be 'out-of-date' now

(DouglasMeyer) Ok. I'll keep digging around. Thanks!

we dont really support dat on the client side right now, just in node, which is why youre prob having a hard time finding a client side version :D

its a bit DIY. we spent a lot of time trying to make a nice webrtc transport but we shifted focus away from it because it was too hard to make fast enough for our use case

that being said, if you are willing to roll up your sleeves you can definitely get it to work

(DouglasMeyer) Great to know! I'm definitely excited around the tech stack associated with dat. Maybe I'll buckle down and try to sort it out when I get into some related projects. Thanks!

(fasiha) VPS writing to a Dat archive. I'd like to retire the VPS and "move" the Dat archive to a new computer, which will write to it, while preserving the archive's history. In this situation, is it safe to `tar` the original archive directory (including `.dat` and secret keys and all), move it to the new computer, and decommission the old VPS?

(fasiha) Sorry, I meant to say, “I have a VPS writing to a Dat archive…”

I’ve done that and it worked ... you might want to use the -S flag on tar for sparse files

(fasiha) Thanks jimpick! I actually tried using `dat keys export/import` per https://github.com/datproject/dat/pull/828 and it worked!!!

(fasiha) @DouglasMeyer I was going to recommend https://mafintosh.github.io/hyperirc-www/#4e397... as a masterstudy of Dat in browser but it looks like mafintosh may have taken down signalhub.mafintosh.com, I see some connection errors in JS console?

@fasiha oops :)

@fasiha bret: signalhub is running again

feross: do you have any stats on how many linux 32bit users you have in webtorrent / in general?

Ty! Is it just crashing?

bret: i think the machine restarted and i have a yolo ops setup there

jimpick: hey

jimpick: playing around with network simulator

cool

it's not quite done yet ... i need to write the wrappers around 'mnexec' so i can run stuff in the 'vms'

although i have confirmed that it works by doing the steps manually

jimpick: how do i install mininet?

if you are on ubuntu, you can do 'apt-get install mininet' :-)

or install from source

i initially tried the vm image in vmware, but it's ubuntu 14.04, which didn't get along with mkcontainer

jimpick: i get a not found from mininet when apt-get'ing

it was good for learning mininet though

apt-get install mininet

hmm. i was using 16.04 ubuntu

so am i

hmmmmmm

you might not have 'Universe' enabled https://help.ubuntu.com/community/Repositories/...

check /etc/apt/sources.list

jimpick: ah, that is it

jimpick: is the idea to make the containerfile install mininet?

no, it's the other way around

i run mininet, and it creates 'vms' ... and then i run systemd-nspawn in each vm

the vms aren't really normal vms ... they are sort of like a chroot, but instead of having a different root directory, they have different networking configuration

they all share the same root filesystem

it's weird, and fun, and lightweight

there's a special 'controller' vm it spins up that controls all the software defined switches

the tutorial is probably better at explaining it than me

ah ok

i think it will be really fun trying to simulate different topologies

it has certain topologies built into it for free ... for fancy topologies, you can use python to define them

but i think we can write our tests without having to use python

nice

jimpick: is it too much to ask, to try and run mininet in an unbuntu container and then inside that container run the topology? :D

with `mnexec`, i can run commands inside a vm from outside. it might get a bit hairy though since i'm going to run systemd-nspawn inside each one, so the tape tests will want to go one level deeper inside the nested vm to spawn stuff

we can do more lightweight testing by not using systemd-nspawn and just install the things we want to test in the root image ... but i think it would be nice to use mkcontainer and model actual machines

okay makes sense