Questions tagged [network]

a network allows computers to communicate and exchange data

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What is the scalability limit for POA Ethereum (number of nodes)?

Tried to find any benchmarks what is the maximum number of nodes for Ethereum PoA network. When network latency becomes crucial? Looking for any sources / empirical benchmarks.
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How to connect a dapp on private ethereum network

I created a private ethereum network with 3 nodes kai i have also created a dapp. How i can connect my dapp with my private network? Thank you!
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Ethereum Private network . Commit new minning work stuck

I am trying to build an ethereum private network. Here is my genesis.json file { "config": { "chainId": 15, "homesteadBlock": 0, "eip155Block": 0, "eip158Block": 0 }, "nonce": "0x0000000000000042", "...
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which port I use when I want to connect remix to my local quorum network?

I want to deploy a smart contract on my local network. I executed a local node via PRIVATE_CONFIG=ignore nohup geth --datadir ./Node1/new- node-1 --nodiscover --verbosity 5 --networkid ...
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How are UUIDs assigned in ethereum

I am learning about blockchain and P2P in general. I know ethereum uses a distributed hash table for node lookup (kademlia) that maps UUIDs of nodes to their addresses. I am curious about how the ...
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is account nonce network dependent?

In Ethereum, does Account nonce depend on network? I mean for same address on different network, will there be different nonce?
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29 views

How do I make my private Ethereum network public? [closed]

So after a lot of reading I was able to make my own private Ethereum network, most of the readings I did showed me how to test it privately, but none of them actually explained how to make it public, ...
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Is it dangerous for my geth node to accept connections from random IP addresses? [duplicate]

I am running a geth node with a number of RPC and WS options available. In looking at the logs, I am seeing attempted connections from random IP addresses. They look as follows: TRACE[02-17|22:19:32....
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1answer
162 views

Deliberate Slashing: Don't slashing and leaking incentivize DDOS attacks on smaller nodes? Won't this centralize POS more than POW, even?

In Ethereum's proposed proof-of-stake algorithm (POS): A traditional node operator can't host a node themselves (e.g. on a home network), someone could just DDOS their node to bring them offline. ...
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1answer
66 views

How to gather all addresses of nodes in a private network?

I am currently learning core-development in go-ethereum. I am a little weak with networking, RPC and connections. I am trying to write a function in my own consensus mechanism that gathers all ...
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Running 'parity account new' - is the generated account suitable for all networks (mainnet, ropsten, kovan, etc)?

From a command line, I run parity account new. I am then asked to enter a password (twice), and an account-address is printed. In addition to that, a JSON file is created. Finally, I use this ...
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What possibly could go wrong if I leave my private blockchain node 30303 port open to public? [duplicate]

I have the following setup: All the nodes inside my cluster are talking to each other via 30303 port. When I want to talk to them, I'm using a Geth light client via HTTP JSON RPC port 8545. Only the ...
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20 views

Techniques to count nodes [duplicate]

What are the different techniques to count nodes in ethereum? ethernodes.org has a count of nodes, how can we verify if that is true ? Are there any other techniques to do similar counting. Can you ...
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Possibility of detecting MAC address spoofing in Ethereum network?

The paper that has been published here: https://dl.acm.org/citation.cfm?id=3282283 proposes a consensus algorithm based on distributed voting process as an alternative to proof-of-work based ...
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1answer
48 views

Running Geth without inbound connection

I have a simple question. Should I let my server always open inbound connections when using Geth? I want to keep my server secure by restricting inbound connections. Is there a way to use Geth ...
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1answer
26 views

Could give ethereum network upgrade solutions?

As we known, the ethereum have soft and hard fork to upgrade network. If we modify the private ethereum code, how to notify other nodes to upgrade their geth? What if they do not upgrade the network? ...
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1answer
90 views

Does each node dynamically connects to its connected nodes' peers?

I want to give example from private Ethereum network which has 5 nodes, but we can generalize it for much larger network that has thousands of nodes. On the figure double arrows represents connected ...
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1answer
30 views

How can nodes fail

I am writing plans to support a parity blockchain cluster and need to determine guidelines for the DevOps team. What are the ways in which nodes can fail and back practice for handling these?
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Full archiving nodes

Does anyone know how many full archiving nodes are there in Ethereum network. I know this site https://www.ethernodes.org, but there is no way to discover which node is full node and wich one is full ...
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258 views

Connecting to remote node

I have created a node in my laptop. Now I want my friend (from his home) to connect to the node I created. We are part of two different networks. How can these two nodes be connected in ethereum. What ...
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1answer
367 views

Result of calling web3.version.getNetwork() from browser-side code is always undefined?

I'm trying to get the network ID from the Web3 object on the client side (i.e. - while running Javascript code in the browser). I have code that confirms that the object exists and it does. I have ...
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1answer
31 views

Verifiyng value in contract

Imagine a network where only specific nodes have ether and can run contracts, and there are other nodes, lets call then V, that only want to read the content produced by the other nodes. Is there a ...
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223 views

what is the protocol used in commuinication between ethereum blockchain nodes?

Let's say that we have many blockchain nodes managed by parity clients. what is the protocol used in communication between those nodes?
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Is it necessary to have the UDP port open for an Ethereum private net?

An Ethereum node requires both TCP (listener) and UDP (discovery) port (usually 30303) open and reachable by other nodes. My question: is it possible to run a private network with my node only ...
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1answer
389 views

Set up Custom nodes in Quorum

I have gone through the https://github.com/jpmorganchase/quorum-examples and it works good and fine. Now I want to make my own custom node Quorum Network what is the best method, tool or any guide ...
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338 views

Getting number of value transaction of a contract in the last 24 hours

I'm would like to get the number of value transactions (either tokens deposit or withdrawal) for a specific contract (I got its address) in the last 24 hours and also the total so far. Is it possible?...
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1answer
31 views

How to listen to inter-node communications regarding transactions

If I run a full node (say geth) in the Ethereum network, then the way things work out is that every node releases/ announces new transactions as they receive new ones. I'm assuming that my node must ...
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2answers
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Is it possible to batch transactions together?

In bitcoin-land, it's advised to batch transactions to send them to (a) reduce fees and (b) reduce network congestion. Does the same apply to ethereum land? It seems that the to can be only one ...
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237 views

How does ethereum bypass the NAT

I wonder, since Ethereum is based on a decentralized p2p network, how does it get through the NAT Firewall? There is no server Ethereum can connect on, so there has to be a way for nodes to accept ...
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1answer
18 views

How to program ethereum's infrastructure?

I would like to create an ethereum network with some changes in the infrastructure, for example - adding some encryption, change the proof of work function and more. Do you know some environments ...
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107 views

Proof of Authority Finalisation

Are there uncles/orphaned blocks in a PoA-based network? How do we reach consensus which is the real chain if the chain is splited/ we have a fork? Do you know any possible attack vectors on such ...
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1answer
35 views

Is it possible to use low mining complexity to remove some certain transaction in the past?

I have a question that has concerned me for a long time. It relates to the security and reliability of the blockchain applications. Let's assume I want to build an application that uses Ethereum or ...
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1answer
703 views

How to synchronise Ganache-CLI accounts with Ganache-UI?

When I launch ganache-cli for Port 7545, it will create 10 accounts by default. ganache-cli -p 7545 However, when I then open the Ganache-Desktop-App, it will show different accounts and the ...
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How does reputation work in the Ethereum P2P network?

Nodes in the Ethereum P2P network assign their peers reputation in order to keep track of how well they behaved in the past and evaluate whether it would be preferable to disconnect from them. What ...
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1answer
149 views

A problem in building a private network using Ethereum

There is a problem in in building a private network using Ethereum. Geth version : 1.8.3 stable OS & Version : windows 10 My scenario is as follows: The genesis block is as follows { "...
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1answer
38 views

I've created a private blockchain with geth and curious if this ether is real and spendable? [duplicate]

I have a small private network which generates roughly 20,000 ether daily.. I read of this private network configuration often and it seams like people are actually using this Ether as real ether that ...
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1answer
20 views

What if I close a wallet program in midst of a transaction?

Suppose I start a transaction in my wallet program (such as Mist or MetaMask). Also suppose the transaction is delayed (for example because of being connected to zero peers) and I exit from the ...
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When to use the slow Ethereum network?

The Ethereum network works very slowly. I often am connected to 0 peers. So what are (GMT) hours when it works the best, for accomplishing a transaction? Also, which week days it work the best? ...
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1answer
426 views

Setup PoS private network

I need to setup PoS private network with Casper and I cant find any official manual how to do it. There are only couple links which uses this git repo: https://github.com/karlfloersch/docker-pyeth-dev ...
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322 views

What is faster the main network or Ropsten?

Ropsten sometimes works VERY slowly. What's about the main network? What is usually faster the main network or Ropsten? I do not yet have Ether to try to deploy something on main network and I want ...
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796 views

Ropsten Network down?

According to Etherscan the last mined block was block 2933931. However, my node is stuck at block 2933993. On their website they are announcing the following: "Node Resynch in progress. Indexing ...
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1answer
406 views

Connecting to remote Geth client from AWS hosted server via web3 needs fix

There is a general problem that is affecting most everyone who tries to initialize AWS hosted servers with a remote Geth instance. It would be great to have documentation to address a fix or at least ...
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1answer
277 views

Is there a way to debug live smart contracts on main network?

Debug button doesn't work on Remix when targeting a live smart contract. What are my other options? Can I copy the current main Ethereum network snapshot with ganache and then run my own transactions?...
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2answers
7k views

How will an Antminer F3 even work?

So, there is this rumor about a massive 72GB of ram "ASIC" miner coming up from bitmain specifically to mine Ethereum. I knew that Ethereum is ASIC resistant, so how would this potential miner even ...
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Wrong network used on metamask by mistake [duplicate]

I have bought some HUR tokens through metamask (transaction is confirmed) but cannot see the tokens in the wallet. I sent the ETH over main network, instead of rinkeby test network- what can i do??
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What are some guideline specifications for running a full Ethereum node using Geth 1.8?

I'm keen to run a full Ethereum node to support the network. What are the guideline hardware requirements for this?
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172 views

Using node in local network as provider

I am using web3js, I've set up an ethereum node in my network in a laptop via mist, now I'd like to run a web3js script that uses that node as provider; var PROVIDER = "192.168.1.40:8545" // I've ...
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380 views

Ethereum network messaging

I am trying to "join the dots" around the networking aspect of Ethereum. From the documents, it seems, the underlying protocol is RLPx that powers the ÐΞVp2p Wire Protocol. Though TCP provides a ...
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Does cellphone 4G tethering wifi cause the Ledger 'transaction rejected by server' error?

I have just tried once again to make an ETH transaction using the default suggestion of 45 Gwei, which seems much too high. Yet it was rejected by the server, and the Ledger support has only emailed ...
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48 views

Does running Ethereum Wallet support the network?

If I keep the Ethereum Wallet open, am I helping the network? Am I mining?