Ethereum: How to set syncnode of a peer to true?

Setting a Peer Sync Node to True

As a network administrator or developer, you need to ensure that your Ethereum test connection is properly configured to sync with other nodes, which can be crucial to maintaining data consistency and preventing orphaned blocks. In this article, we’ll walk you through setting a peer sync node to true on your test connection.

What is a Peer Sync Node?

In Ethereum, a
Sync Node is a node that acts as an intermediary between other nodes on the network, relaying data and keeping all nodes in sync. When a client connects to a Sync Node, it can request information about other clients connected to the same node, including their addresses, services, and last send timestamps.

Why set a Peer Sync Node to True?

Setting a Peer Sync Node to true ensures that:

• All nodes on the network are aware of each other’s presence and connections.

• Data from each client is propagated across the network and made available to other clients for synchronization.

• Orphaned blocks, which can be created when a node disconnects or reconnects, cannot be removed from the network.

Step-by-step guide

To set the peer sync node to true on a testnet connection, follow these steps:

1.
Get information from your peers

First, you need to get information about the machine you want to synchronize with. This can be done using the getpeerinfo command in the Ethereum console or by calling the API.

eth console - q getpeerinfo < peer_addr >

Replace with the address of your peer on the testnet.

2.
Parallel Peer Information

The output of the getpeerinfo command will contain a JSON object containing various information about the peer, including its addresses and services.

json

{

“address”: “172.20.61.111:63379”.

“services”: “00000001”,

“load send”:

} }

In this example:
addr is the peer address.
services means that this peer uses 0x services (e.g. ETH, Ether).
lastsend contains information about the last time a given client sent a message.

3. 
Create a sync node
To set the peer sync node to true, you need to create an instance of the SyncNode class that connects to the testnet connection. You can use the following code as a starting point:

javascript

const Network = require( ‘ethers’);

const { SyncNode } = require(‘ ./sync-node .js ‘);

async function main() { .

const networkConfig = new Network.Web3.providers.HttpProvider(‘

const client = new Network.Client(networkConfig);

// Create a sync node instance

const syncNode = new SyncNode(client, ‘0x00000001’, 1); // Replace with your services

// Set the sync node to true

syncNode .setSyncNode (true);

} }

main().catch((error) => console.error(error));

Make sure to replace YOUR_PROJECT_ID with the actual ID of your Ethereum test project.

4. 
Updating peer information



Finally, you need to update the peer JSON object information obtained earlier by setting its services field to 1 (or some other valid service code). This can be done with a small JavaScript function:

javascript

function setServices ( peerInfo ) { ;

if (!peerInfo.services || !peerInfo.services.includes(‘eth’)) {

// Set services to ETH if they are not already

peerInfo.services = [‘eth’];

} }

return peerInfo ;

} }

// Update peer information set to

const updatedPeerInfo = setServices({ …peerInfo });

console.log(updatedPeerInfo);

“

Conclusion

By following the steps below and using theSyncNode` class, you can easily set the peer sync node to true on your Ethereum test connection.