Setting up namecoin

[Vince]

I'm having some trouble getting my self-compiled namecoind to connect to the network / get the blockchain.

Right after starting it up it does not get any connection, instead tries to connect to some nodes on port 36384??

So I gave it a node manually:

addnode=69.164.206.88:8334

now it connects quickly, gets tons of nodes and has 8 connections, but does not download the blockchain.
debug.log says:


received block 0000000000540162cbc9
ERROR: CheckProofOfWork() : block does not have our chain ID
ERROR: CheckBlock() : proof of work failed
ERROR: ProcessBlock() : CheckBlock FAILED
received: block (215 bytes)
received block 00000000003f8b788e9f
ERROR: CheckProofOfWork() : block does not have our chain ID
ERROR: CheckBlock() : proof of work failed
ERROR: ProcessBlock() : CheckBlock FAILED
received: block (215 bytes)
received block 00000000007f3cb18860
ERROR: CheckProofOfWork() : block does not have our chain ID
ERROR: CheckBlock() : proof of work failed
ERROR: ProcessBlock() : CheckBlock FAILED


tons of these.

Any ideas??

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[Vince]

Just a small update:

I use linux (ubuntu natty 64bit), still cant get namecoind to download the block chain.

$ namecoind getinfo
{
    "version" : 32451,
    "balance" : 0.00000000,
    "blocks" : 0,
    "connections" : 8,
    "proxy" : "",
    "generate" : false,
    "genproclimit" : -1,
    "difficulty" : 512.00781274,
    "hashespersec" : 0,
    "testnet" : false,
    "keypoololdest" : 1311269883,
    "paytxfee" : 0.00000000,
    "errors" : ""
}

already tried to delete the database, config, no changes. Letting it run for 2 hours didnt change anything either.

[Vince]

Fixed!

I used the most recent version from git which maybe had some bug or maybe the developers changed something.
Now its running with a version a few weeks older - no problems at all.

[CYPER]

Can you tell how and where you got the old version from?
And then how did you install it?

Well if you can write a guide that will be much appreciated

I also got that screen with 8 connections, but no blocks - but it's been only 20 minutes. I'll leave it for the night and check tomorrow.

[Vince]

I got it from the official github,
https://github.com/vinced/namecoin.

Its the 3.21.91-version I downloaded as source, unzipped it
switched to "src"-directory
and compiled with
make -f makefile.unix -j 6

this needs a few libraries installed, but it keeps on telling you whats missing.

afterwards i copied the namecoind-binary to /usr/local/bin

created a simple config in ~/.namecoin/bitcoin.conf

(just rpcuser, rpcpassword, rpcport, daemon=1 and server=1)

and started up with namecoind

I'm running all my rigs on this one and already found some blocks - low difficulty at the moment!

[CYPER]

OK managed to start it and is now mining, but can you tell me if that looks fine -  http://paste.ubuntu.com/650089/

What will change on that screen when I found the hash for a block? Will it change to [1 Accepted] [0 Rejected] [RPC]

And what does [22/07/2011 17:33:42] New block (WorkQueue) mean?

I'm not 100% sure that I'm mining properly.

[makomk]

Just encountered the first of those problems myself. The short answer is: the namecoin code is broken and calls htons on the default port twice, so it ends up listening on and connecting to the wrong port number. The fix is to edit namecoin.cpp, find:

Code:

return fTestNet ? htons(18334) : htons(8334);

and remove both htons so that it instead does

Code:

return fTestNet ? 18334 : 8334;

Not sure about your second bug; I'd already moved to a slightly older changeset (495a5eb42193c262119ad9ef03b45f8e4b973df1) that I suspect doesn't have it.

[CYPER]

Just encountered the first of those problems myself. The short answer is: the namecoin code is broken and calls htons on the default port twice, so it ends up listening on and connecting to the wrong port number. The fix is to edit namecoin.cpp, find:

Code:

return fTestNet ? htons(18334) : htons(8334);

and remove both htons so that it instead does

Code:

return fTestNet ? 18334 : 8334;

Not sure about your second bug; I'd already moved to a slightly older changeset (495a5eb42193c262119ad9ef03b45f8e4b973df1) that I suspect doesn't have it.

Is that change fixing the bug of not downloading the blockchain?

And which bug do you mean as second?

[makomk]

Is that change fixing the bug of not downloading the blockchain?

And which bug do you mean as second?

It fixes the bug of using the wrong port and not connecting to any nodes; it doesn't fix the one where it then fails to download the blockchain (because I didn't encounter it - I suspect that's related to the merge of the merged-mining patches, and I'd already gone back to a revision prior to then).

[CYPER]

Do you know what is the latest working version?