#dat

hi

mafintosh: so re: https://github.com/mafintosh/hyperdrive/issues/2, i should do feed.get(0 and then when that is done feed.blocks should be populated?

ogd: yes or you can do feed.ready(cb) instead if you don't care which one is fetched first

mafintosh: ahh ok

mafintosh: biggest blocker we ran into was lack of multi process access to the ~/.dat/db

mafintosh: because we wanted to store the dat in the home dir

mafintosh: and im not even sure anymore what the best approach there is cuase we've redone it so many times

mafintosh: for now im just doing local dats again so each process is in a diff folder and has its own db

ogd: thats fine for now

ogd: its a lot easier this time since there isn't any locks

ogd: implemented in js

mafintosh: ah yea

mafintosh: also not using dht in testing because https://github.com/maxogden/discovery-channel/i...

ogd: oh okay

ogd: i spun up a hyperdrive on DO earlier (its still running) and booted up another on a coffee shop wifi and they started replicating a csv file :)

mafintosh: haha nice

ogd: using the dht as discovery

mafintosh: if you're only advertising one file it works

mafintosh: but if you have multiple things to announce it causes that error on startup

ogd: ah i see

mafintosh: basically if dht.announce gets called multiple times it throws. it should just use thinky

thunky

ogd: but after the dht is ready its fine right?

mafintosh: yea

mafintosh: ok try dat 1.0 branch

mafintosh: in one folder with some non-hidden files in it do `dat share`, then in another folder do `dat <hash>`

mafintosh: oh actually my push is still uploading cause my internets slow

ogd: not home?

mafintosh: ok its on 1.0 branch now

mafintosh: at coffee shop

[dat] maxogden pushed 1 new commit to 1.0: http://git.io/vRu5P

dat/1.0 4089036 Max Ogden: use hyperdrive 1.1.0

mafintosh: if you are only sharing 1 file you can turn on dht in cli.js and send me the link

mafintosh: oh actually its line 27 of index.js

mafintosh: bah sorry line 30

ogd: it could just announce the top hash

ogd: and none of the files - it would still work

mafintosh: actually i think thats what im doing... so maybe im misundersatnding the bug

mafintosh: oh actually i think what is happening is internally bittorrent-dht calls .announce on itself

mafintosh: and then if you call .announce on it before it finishes it throws

mafintosh: or something like that

ah

mafintosh: lemme just do my own deferred thing in discovery-channel

ogd: hey worked locally!

mafintosh: woot

good job everyone :)

mafintosh: ok actually im already doing this https://github.com/maxogden/discovery-channel/b...

ogd: your code has a small bug where its writing the file random access index as part of the file

mafintosh: and using that function in both .lookup and .announce

ogd: but don't worry about that for now

mafintosh: oh

ogd: i haven't hit that exception you're talking about in my examples

mafintosh: lemme reproduce it again locally and make sure im not doing something dumb

mafintosh: to reproduce, set this.discovery = discoveryChannel({dht: true})

mafintosh: and then do 'dat share' and it should crash

ok

ogd: how fast should it crash?

mafintosh: couple seconds

ogd: i get this err, Error: invalid node id / info hash length

mafintosh: you sure you did 'dat share'?

mafintosh: if you do anything else besdies 'share' it treats it as a hash

ogd: yes

mafintosh: that error sounds like its trying to download an invalid hash

ogd: https://gist.github.com/mafintosh/c6dc2b040139b...

mafintosh: try with multiple files

mafintosh: im just curious

ogd: now i get it consistently with one file

ogd: your bug

ogd: i cannot reproduce my id/hash bug

mafintosh: lol

mafintosh: i usually nuke the .dat folder between runs

ogd: ok

ogd: same

ogd: i get Error: dht is already listening

mafintosh: my error?

mafintosh: yea

mafintosh: so i think whats happening maybe is bittorrent-dht is calling .listen internally somewhere

mafintosh: then when i call .listen it causes that

mafintosh: yea thats what it is

ogd: nice

mafintosh: i guess creating a bittorrent-dht instance makes it call .listen automatically

ogd: yea i guess so

mafintosh: ok fixed first bug, now getting the invalid node id bug

mafintosh: thats cause bittorrent dht converts the hash string you pass in to hex

ogd: can you reproduce?

id = idToBuffer(id)

var idHex = idToHexString(id)

ogd: just dead with buffers

*deal

lol

mafintosh: ok fixed it, pushing

ogd: i almost have hyperdrive writing to files working now