How to get a stable blockchain? Adding peers to your web.xml file!

[punkrock]

Sometimes your client stops getting new blocks. It may help to add some good peers.

Open the file web.xml (located at \NextCoin\webapps\root\WEB-INF) with an editor like Notepad++ and add good peers at "wellKnownPeers". I will update the example below from time to time.

EasyCopyString (updated 2013/12/31):

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<init-param>
<param-name>wellKnownPeers</param-name>
<param-value>node94.nxtbase.com; 209.222.16.10; node95.nxtbase.com; node4.nextcoin.it; node5.nxtbase.com; nxt20.tweetmondo.com; vps3.nxtcrypto.org; node2.nextcoin.it; 162.243.214.68; nxt02.now.im; 162.243.223.161; node50.nxtbase.com; nxt01.now.im; 85.25.134.59; node8.nxtbase.com; node63.nxtbase.com; node96.nxtbase.com; node18.nxtbase.com; 95.85.46.249; node65.nxtbase.com; node36.nxtbase.com; nxt12.tweetmondo.com; nxt23.tweetmondo.com; nxt14.tweetmondo.com; 80.86.92.50;</param-value>
</init-param>

Detailed instructions
(THX to Pablito89)

1. Close your java process (if it's running)
2. Go to the following directory nxt/webapps/root/WEB-INF/
3. Open web.xml with a text editor
4. Find this line:

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<param-name>wellKnownPeers</param-name>5. Copy & paste the IPs from the EasyCopyString (see above) between <param-value>HERE</param-value>
6. It will looks like:

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<param-name>wellKnownPeers</param-name>
<param-value>node94.nxtbase.com; 209.222.16.10; node95.nxtbase.com; node4.nextcoin.it; node5.nxtbase.com; nxt20.tweetmondo.com; vps3.nxtcrypto.org; node2.nextcoin.it; 162.243.214.68; nxt02.now.im; 162.243.223.161; node50.nxtbase.com; nxt01.now.im; 85.25.134.59; node8.nxtbase.com; node63.nxtbase.com; node96.nxtbase.com; node18.nxtbase.com; 95.85.46.249; node65.nxtbase.com; node36.nxtbase.com; nxt12.tweetmondo.com; nxt23.tweetmondo.com; nxt14.tweetmondo.com; 80.86.92.50;</param-value>7. Save & restart Java process


Automatic Public Nodes Update Script
(THX to davethetrousers)

Downloads: publicNodes.txt & updatePublicNodes.py.

I just wrote a simple python script that fetches a list of public servers I collect in a text file and puts them into the NXT server config.
Usage is quite simple. The only prerequisite is to have a symlink to the config file (web.xml) in the NXT rootdir:

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~/nxt$ ln -s webapps/root/WEB-INF/web.xml configfile
I find this more elegant than drilling down into the dir explicitly. If you do not like this very much, alter the configFilename variable in the script.
When ready, just start the script:

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python updatePublicNodes.py
Hope this reduces some hassle for node admins.

[opticalc]

most of the time all 1 - 5 of my hosts vps1.nxtcrypto.org are good for a blockchain download as well.  add all 5 vps1 vps2 vps3 vps4 vps5

[seek4dream]

I did just as you told, but it is still stuck at block 24512.
Any suggestion? my version is 0.4.4

[BloodyRookie]

Upgrade to 0.4.7e and manually boot any peer that is running an older version.

[punkrock]

@seek4dream: You can download the current version for Windows here.

[zappadave]

Well known peers are being blacklisted.
Any ideas as to why?

Dave

[davethetrousers]

Seeing some being BL'd on and off as well. I think we can disregard. Probable causes imho:

Connecting took longer than defined in config, no more connections possible for either side, node down altogether & similar things ...

[ZeroTheGreat]

I also advise to increase ~ConnecterPeers in some times.

[zappadave]

I also advise to increase ~ConnecterPeers in some times.

How?

[gsxrl3oi]

Youtube tutorial would be great. thanks boss

[joefox]

The term "blacklist" is a bit of a misnomer.  A blacklisted node is just one that has recently disconnected from the network and is being removed from the current list of peers. 

"blacklist" doesn't mean "banned".

And yes, they should change the term!

[bitcoinstrading]

I'm getting the following error msg:
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting

Any suggestions?

[AcidBurn]

I'm getting the following error msg:
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting
DEBUG: Failed to accept block received from .........., blacklisting

Any suggestions?

I have the same problem.

[punkrock]

No longer needed.

*closed*