NXT :: descendant of Bitcoin - Updated Information

[Come-from-Beyond]

Will the blocks.nxt and transactions.nxt files always get bigger and bigger?

Yes, but after annual shrinking they'll become much smaller.

[1714216232]

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[OKNXT]

"The matrix has you"

What's the matter?

[Timetwister]

The client is what I see when going to localhost:7875, right? I have tried to delete blocks.nxt and transactions.nxt, and when I open the browser and unlock (creating another address...), most recent block is 23254 and it doesn't update from there.

By the term "client" I meant the program that you run in black window with java -jar command. Just unzip the 0.4.4 version of it in the new folder and run it from there.

Oh, I see what could be wrong. When I execute start.bat, a black window appear and it instantly dissappears. Do you know what can be the cause of that?

Sorry for making so many noob questions.

[Come-from-Beyond]

Would other nodes be able to connect if allowedbothosts is set to localhost?
Does NXT now distinguish between dumb zombies' requests and valid host?

allowedBotHosts works for API requests only.
Current version doesn't filter zombies. Hallmark is supposed to be used for that.

[Come-from-Beyond]

Should hosts that are lucky to get into WellKnownPeers line turn on hallmark protection or off?

No idea. Try both ways.

[laowai80]

Should hosts that are lucky to get into WellKnownPeers line turn on hallmark protection or off?

No idea. Try both ways.

ok

[bitcoinrocks]

I'd like to run the Nxt server in a remote VPS for forging.  I'm concerned about the security of my passphrase.  My plan is to destroy/recreate the VPS whenever I need to unlock my account in order to minimize the risk.  Can my passphrase be stolen if my VPS is compromised *after* it is unlocked?

CfB has mentioned that if one gets access to the memory of Java Virtual Machine then your passphrase would be exposed.

https://bitcointalk.org/index.php?topic=345619.msg4116705;topicseen#msg4116705

That makes forging a *very* risky endeavor!

Please correct me if I'm wrong, but I don't think this type of vulnerability exists in any of the other coins as long as the wallet is encrypted.

[Come-from-Beyond]

"The matrix has you"

What's the matter?

U connect to a remove client. Change "allowedUserHosts" in web.xml on that client to ur real IP.

[Come-from-Beyond]

Please correct me if I'm wrong, but I don't think this type of vulnerability exists in any of the other coins as long as the wallet is encrypted.

That's not correct for PoS currencies.

[davidoski]

Will the blocks.nxt and transactions.nxt files always get bigger and bigger?

Yes, but after annual shrinking they'll become much smaller.

We are currently at 24000 block and blocks.nxt and blocks.nxt.bac files have 8.7 MB each.

At the same time transactions.nxt and transactions.nxt.bac files have 6.1 MB each.

If a block was generated every 1 minute that would mean:

60x24x365=525,600 blocks in a year

If we divide 525,600 by 24000 we get 21.9.

Now if we multiply 21.9 by 8,7 MB we get 190 MB for blocks.nxt file and 190 MB for blocks.nxt.bac file.

Then for transactions.nxt and transactions.nxt.bac files we get 21.9x6,1MB=133 MB each

That means that total database size for NXT client files each year would total:

190MB + 190MB + 133MB + 133MB=646MB per year (shrinking not included in calculations)

Am I right?

[Timetwister]

The client is what I see when going to localhost:7875, right? I have tried to delete blocks.nxt and transactions.nxt, and when I open the browser and unlock (creating another address...), most recent block is 23254 and it doesn't update from there.

By the term "client" I meant the program that you run in black window with java -jar command. Just unzip the 0.4.4 version of it in the new folder and run it from there.

Oh, I see what could be wrong. When I execute start.bat, a black window appear and it instantly dissappears. Do you know what can be the cause of that?

Sorry for making so many noob questions.

Java still running... kill it through Task Manager.

No, it isn't running. Start.bat just has: java -jar start.jar

Is that correct? When I execute it, a black window opens and closes automatically.

[Come-from-Beyond]

Am I right?

No. With current limit 32 KiB per block it's 16 GiB per year.

[blackfyre175]

Has the SHA256 hash for 4.2 been updated on page 1?

[omo]

I use a python cript to communicate with the client, checking its status,
whenever I run the script, I got the following messages.
which parameters should I set to make it not response to local requests?

In web.xml:

   <filter>
      <filter-name>DoSFilter</filter-name>
      <filter-class>org.eclipse.jetty.servlets.DoSFilter</filter-class>
      <init-param>
         <param-name>maxRequestsPerSec</param-name>
         <param-value>3000</param-value>
      </init-param>
      <init-param>
         <param-name>delayMs</param-name>
         <param-value>1000</param-value>
      </init-param>
      <init-param>
         <param-name>trackSessions</param-name>
         <param-value>false</param-value>
      </init-param>
      <async-supported>true</async-supported>
   </filter>

Thank you very much!

[davidoski]

Am I right?

No. With current limit 32 KiB per block it's 16 GiB per year.

It doesn't look like "bloated blockchain size" solution and advantage to bitcoin blockchain problem... :/

[OKNXT]

"The matrix has you"

What's the matter?

U connect to a remove client. Change "allowedUserHosts" in web.xml on that client to ur real IP.

I changed it to my local wireless router's IP address(public network IP address, and my private IP address is 192.168.1.102), however, "The matrix has you" again! In this case, how should I do if I want to use it?

Thanks for your patience.

[mcjavar]

Since 0.4.4 the UI is lagging a lot

[Come-from-Beyond]

"The matrix has you"

What's the matter?

U connect to a remove client. Change "allowedUserHosts" in web.xml on that client to ur real IP.

I changed it to my local wireless router's IP address(public network IP address, and my private IP address is 192.168.1.102), however, "The matrix has you" again! In this case, how should I do if I want to use it?

Thanks for your patience.

U can do such a trick:

1. Set allowedBotHosts to *
2. Open http://mynode.com:7874/nxt?requestType=getMyInfo
3. Copy value of "host" to allowedUserHosts
4. Change allowedBotHosts to the same value

[Come-from-Beyond]

Since 0.4.4 the UI is lagging a lot

During blockchain downloading?

[S3MKi]

Is that correct? When I execute it, a black window opens and closes automatically.

Try double click start.jar