I was not able to generate blocks

[shargon]

With only one CN and Memory store, I never received the Block in LocalNode

I was able to ensure that the block was relayed here

But in LocalNode I never receive the blocks here

Could @superboyiii tell me if you have any problem with this?

[shargon]

The block arrived two minutes later... Still investigating it

[superboyiii]

Hey Shargon, the block arrives on mine after 15 secondes, seems normal. I tried both with LevelDB plugin and write in memory directly. All works well .Is there anything wrong on environment or settings?

[erikzhang]

It's normal on my private net too.

[shargon]

Any clue? I was following the flow, and I don't know why it spend this time in OnReceive? sometimes it spend 8 minutes or more :S

[shargon]

Are you using master ?

[erikzhang]

Are you using master ?

Yes.

[shargon]

You can see in the video that the block is not received in LocalNode.OnReceive

2019-12-10 15-32-38.zip

protocol

{
  "ProtocolConfiguration": {
    "Magic": 5195086,
    "MillisecondsPerBlock": 1000,
    "StandbyValidators": [
      "032887e2f9ac0081d0ec622d42285afb10134990e7b193e596690630d43ebe806e"
    ],
    "SeedList": [ ]
  }
}

[shargon]

I changed Relay to be like this:

public class Relay
        {
            public DateTime Create = DateTime.Now;
            public TimeSpan Elapsed => DateTime.Now - Create;
            public IInventory Inventory;
        }

You can see that was elapsed 3 minutes in arrive

[shargon]

I found the issue, but now i need to understand why :S

[shargon]

@erikzhang @Tommo-L @vncoelho

With empty seeds, it takes the default seeds.

And it starting throwing errors in dns, and AKKA's messages was lagged

Without seeds, (null) there are no errors

And I am able to generate blocks

[shargon]

@Tommo-L The question is why non working dns can alter the AKKA messages?

neo/src/neo/Network/P2P/LocalNode.cs

Line 89 in e913403

entry = Dns.GetHostEntry(hostNameOrAddress);

My error

This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.

[erikzhang]

Maybe DNS queries can consume a lot of time? We should set a timeout.