getwork removed?

[ivoras]

I'm using bitcoind 0.10 and it looks like the getwork RPC is removed:

# bitcoin-cli getwork
error: {"code":-32601,"message":"Method not found"}

The getblocktemplate RPC still works.

However, it looks like stratum-mining uses getwork, and so cannot be used with the latest version of bitcoind - is this correct?

[ahmedbodi]

Hi

Stratum uses GetBlockTemplate to communicate with bitcoind. Older versions of stratum mining did support getwork mining but its been deprecated a long time ago on our end.

Ahmed

[ivoras]

hi,

I'm not writing this ticket because I want to use getwork, I'm writing it because I've checked out stratum-mining yesterday and followed the instructions in the wiki, and it reports the following in the logs:

2015-04-17 07:24:27,286 INFO block_updater block_updater.run # Checking for new block.
2015-04-17 07:24:27,287 ERROR block_updater block_updater.run # UpdateWatchdog.run failed
Traceback (most recent call last):
  File "/srv/stratum/stratum-mining/lib/block_updater.py", line 49, in run
    prevhash = util.reverse_hash((yield self.bitcoin_rpc.prevhash()))
Error: 404 Not Found
2015-04-17 07:24:27,288 DEBUG block_updater block_updater.schedule # Next prevhash update in 4.994 sec

I've attached tcpdump and seen that the "404" is returned by bitcoind for "method not found" in response to the getwork json-rpc call.

So I'm asking you for verification: is my conclusion that I need to be running bitcoind 0.9 with stratum-mining correct?

[ahmedbodi]

stratum mining does not use getwork anywhere. So you are mistaken.

[ivoras]

I could be mistaken, but the log output I've quoted is not.

Can you help me sort this out then? I have the latest version of https://github.com/Crypto-Expert/stratum-mining :

commit b9f2bcea36faea27c81a980565f56733a30035b9
Author: ahmedbodi <ahmed_bodi@msn.com>
Date:   Thu Jun 26 22:35:41 2014 +0100

... and in externals/stratum, by following the instructions from the wiki at https://github.com/Crypto-Expert/stratum-mining/wiki/Getting-Started-With-Stratum , I have:

commit 8ba1b5fd8a802b981f31dace4cf920cfb4a3907c
Author: slush <info@bitcoin.cz>
Date:   Sat Mar 30 22:49:10 2013 +0100

Are these not the latest versions?

Grepping for "getwork" in the stratum-mining root shows that getwork is used in the prevhash() method in lib/bitcoin_rpc.py:

142     @defer.inlineCallbacks
143     def prevhash(self):
144         resp = (yield self._call('getwork', []))
145         try:
146             defer.returnValue(json.loads(resp)['result']['data'][8:72])
147         except Exception as e:
148             log.exception("Cannot decode prevhash %s" % str(e))
149             raise

... which is the source of the exception I'm seeing in logs.

[ahmedbodi]

Ah. I was under the impression that you meant getwork for mining. I would then assume that you have to use a BTC base of > 0.10 then im afraid. I will try finishing my cleaned up fork when i get the chance with a fix for getwork.

Ahmed

[Traffim]

Have you found a solution?

[ivoras]

Hi, No, stratum-mining simply doesn't support recent bitcoind versions. We have not investigated further.

[ahmedbodi]

I know of a solution. I shall attempt to get it implemented as soon as i get some free time. However, if anyone wants to contribute a bounty to get it further up in my todo list. my donation adress is: 19A7fSEUmv4RaMYq8gmQMB3SDLFZDsQyws

Ahmed

[AsicTrade]

import pkg_resources Unhandled Error Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 642, in run runApp(config) File "/usr/lib/python2.7/dist-packages/twisted/scripts/twistd.py", line 23, in runApp _SomeApplicationRunner(config).run() File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 376, in run self.application = self.createOrGetApplication() File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 441, in createOrGetApplication application = getApplication(self.config, passphrase) --- --- File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 452, in getApplication application = service.loadApplication(filename, style, passphrase) File "/usr/lib/python2.7/dist-packages/twisted/application/service.py", line 405, in loadApplication application = sob.loadValueFromFile(filename, 'application', passphrase) File "/usr/lib/python2.7/dist-packages/twisted/persisted/sob.py", line 210, in loadValueFromFile exec fileObj in d, d File "/home/coin/dash/stratum-mining/launcher.tac", line 21, in import mining File "/home/coin/dash/stratum-mining/mining/init.py", line 1, in from service import MiningService File "/home/coin/dash/stratum-mining/mining/service.py", line 7, in from interfaces import Interfaces File "/home/coin/dash/stratum-mining/mining/interfaces.py", line 8, in from lib.util import b58encode File "/home/coin/dash/stratum-mining/lib/util.py", line 7, in import bitcoin_rpc exceptions.IndentationError: expected an indented block (bitcoin_rpc.py, line 151)

Failed to load application: expected an indented block (bitcoin_rpc.py, line 151)

need help)

[engren]

@ahmedbodi I am still getting the same errors in regards to getwork not being supported. Any plans on deploying your fix for this? (or if anyone else has any ideas for that matter....)

[chrysophylax69]

im now getting a similar issue with stratum on dash ...

is there a workaround that we are missing here? ...

crysx

[ahmedbodi]

Your best bet is to run something like UNOMP for dash to be honest. I'd say its much more supported

[ahmedbodi]

OK this should finally be fixed. i got round to it eventually lol