[ANN] Stratum mining protocol - ASIC ready

[-ck]

I thought this would be the solution too, but I get extremely high value, 500.000.000, when in fact doing only <200kH/s. So this formula can't be correct (at least not for scrypt mining)

Scrypt is nonsense and uses 65536 * the actual difficulty as a defacto standard because it started at too low a difficulty to begin with.

[1713994505]

1713994505

[1713994505]

1713994505

[1713994505]

1713994505

[djeZo]

I thought this would be the solution too, but I get extremely high value, 500.000.000, when in fact doing only <200kH/s. So this formula can't be correct (at least not for scrypt mining)

Scrypt is nonsense and uses 65536 * the actual difficulty as a defacto standard because it started at too low a difficulty to begin with.

So, my "guessed" formula is then correct?

[Sannin]

Hi,

can somebody explain me what is the session in stratum?

{"error": null, "id": 1, "result": [["mining.notify", "ae6812eb4cd7735a302a8a9dd95cf71f"], "00000001", 4]}

Can I ignore this parameter? What is it? Can I set this parameter?

Thanks for reply

Analyzing stratum myself and it looks like this one isn't being used anywhere. Maybe reserved for later usage?

I analyzed cgminer code and I think that 'sessionid' is used only to reconnect. Am I right?

[-ck]

Hi,

can somebody explain me what is the session in stratum?

{"error": null, "id": 1, "result": [["mining.notify", "ae6812eb4cd7735a302a8a9dd95cf71f"], "00000001", 4]}

Can I ignore this parameter? What is it? Can I set this parameter?

Thanks for reply

Analyzing stratum myself and it looks like this one isn't being used anywhere. Maybe reserved for later usage?

I analyzed cgminer code and I think that 'sessionid' is used only to reconnect. Am I right?

Correct. Whether the pool uses it or not is implementation dependent, but it is required to support reconnect.

[Sannin]

Thanks

[-ck]

Unfortunately very few pools currently support reconnect. We can't force them to implement a feature that only benefits miners

[djeZo]

ckolivas, since you made cgminer, I am sure you will know to answer this question about stratum protocol; is it possible to turn stratum client into a pool, so that incoming stratum work is further divided into work for other clients. I am building a proxy that sits between pool and multiple instances of cgminer, so that the pool "thinks" it is in fact only one miner running. I know there is existing implementation that does stratum->getwork, but why should I go that heavy load path. I need to develop something light and fast, doing it in C and every cycle is important.

[-ck]

ckolivas, since you made cgminer, I am sure you will know to answer this question about stratum protocol; is it possible to turn stratum client into a pool, so that incoming stratum work is further divided into work for other clients. I am building a proxy that sits between pool and multiple instances of cgminer, so that the pool "thinks" it is in fact only one miner running. I know there is existing implementation that does stratum->getwork, but why should I go that heavy load path. I need to develop something light and fast, doing it in C and every cycle is important.

Possible yes.  Someone has to implement it though, and I have no interest in turning cgminer into pool or proxy software at this stage with so much else to do.

[djeZo]

ckolivas, since you made cgminer, I am sure you will know to answer this question about stratum protocol; is it possible to turn stratum client into a pool, so that incoming stratum work is further divided into work for other clients. I am building a proxy that sits between pool and multiple instances of cgminer, so that the pool "thinks" it is in fact only one miner running. I know there is existing implementation that does stratum->getwork, but why should I go that heavy load path. I need to develop something light and fast, doing it in C and every cycle is important.

Possible yes.  Someone has to implement it though, and I have no interest in turning cgminer into pool or proxy software at this stage with so much else to do.

I will do it, I just need to know theory behind it. Formulas or pseudocode, whatever that can help me to understand what has to be done for it to work.

[gh2k]

Unfortunately very few pools currently support reconnect. We can't force them to implement a feature that only benefits miners

Where is the documentation on 'reconnect'? This sounds like it would be useful to me, but I can't find it on slush's page.

[-ck]

Unfortunately very few pools currently support reconnect. We can't force them to implement a feature that only benefits miners

Where is the documentation on 'reconnect'? This sounds like it would be useful to me, but I can't find it on slush's page.

My post here is as close to the official documentation as it gets:
https://bitcointalk.org/index.php?topic=108533.msg1557099#msg1557099

[gh2k]

Unfortunately very few pools currently support reconnect. We can't force them to implement a feature that only benefits miners

Where is the documentation on 'reconnect'? This sounds like it would be useful to me, but I can't find it on slush's page.

My post here is as close to the official documentation as it gets:
https://bitcointalk.org/index.php?topic=108533.msg1557099#msg1557099

That's excellent. Thanks. Unfortunately, I was hoping to find a way to tell the miner to reconnect (other than just tearing down the connection) so that I could nefariously switch the extranonce for a different one. I misread the post.

[-ck]

Unfortunately very few pools currently support reconnect. We can't force them to implement a feature that only benefits miners

Where is the documentation on 'reconnect'? This sounds like it would be useful to me, but I can't find it on slush's page.

My post here is as close to the official documentation as it gets:
https://bitcointalk.org/index.php?topic=108533.msg1557099#msg1557099

That's excellent. Thanks. Unfortunately, I was hoping to find a way to tell the miner to reconnect (other than just tearing down the connection) so that I could nefariously switch the extranonce for a different one. I misread the post.

Ah no, what you want then is client.reconnect . If you give the client a reconnect and just send it the same stratum url it will reconnect to the same url with a new connection.

[gh2k]

Ah no, what you want then is client.reconnect . If you give the client a reconnect and just send it the same stratum url it will reconnect to the same url with a new connection.

Thanks, that's the one I want!

It would be nice if this were documented somewhere. Maybe I'll have a crack at reading your source and making a wiki page about it, once I'm done with my current project.

[djeZo]

ckolivas, are you aware of cgminer bug (in ver 3.7.2) that causes cgminer to crash - it is related to stratum networking. When there are network issues, it can happen.

[-ck]

ckolivas, are you aware of cgminer bug (in ver 3.7.2) that causes cgminer to crash - it is related to stratum networking. When there are network issues, it can happen.

I have no interest in bug reports for old versions.

[djeZo]

ckolivas, are you aware of cgminer bug (in ver 3.7.2) that causes cgminer to crash - it is related to stratum networking. When there are network issues, it can happen.

I have no interest in bug reports for old versions.

I know, I am just asking if it was reported and fixed in later versions.

[-ck]

ckolivas, are you aware of cgminer bug (in ver 3.7.2) that causes cgminer to crash - it is related to stratum networking. When there are network issues, it can happen.

I have no interest in bug reports for old versions.

I know, I am just asking if it was reported and fixed in later versions.

Check the changelogs, I recall a few stratum patches.

[orddie]

has anyone got anything in the scripts folder to work?  when i try and add, refresh, or update i get
Error during request: tuple index out of range

Code:

2014-02-26 09:46:45,229 ERROR protocol # [Failure instance: Traceback: <type 'exceptions.IndexError'>: tuple index out of range
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/protocol.py:192:dataReceived
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/protocol.py:238:lineReceived
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/services.py:13:_handle_event
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/services.py:81:call
--- <exception caught here> ---
/usr/lib/python2.7/dist-packages/twisted/internet/defer.py:134:maybeDeferred
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/services.py:78:_run
/usr/local/lib/python2.7/dist-packages/stratum-0.2.13-py2.7.egg/stratum/services.py:213:inner
]

if I kill the server and start it over again...  it launches.  I guess my hope is that i can switch the mining without doing a shutdown and launch again.

[cyborgminer]

Hi guys

I'm trying to setup a simple http request to stratum mining pool in c#. I'm getting this error: "Underlaying connection was closed."

Code:

string json = "{\"method\": \"getblocktemplate\", \"params\": [], \"id\": \"0\"}";
WebClient w = new WebClient();
w.Credentials = new NetworkCredential("user", "pass");
w.Headers.Add("Content-type", "application/stratum");
j = wc.UploadString("http://blabla.com:3333", json);

Please help