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Questions tagged [network]

a network allows computers to communicate and exchange data

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13 views

Peer-to-Peer Network simulation [on hold]

I consider a peer-to-peer network(blockchain) with N node where a node send its own data(transactions or block) to other peer nodes. I would like to limit data replication in my network and show it ...
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32 views

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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0answers
15 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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25 views

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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9 views

Blockchain networks federation

Can I federate multiple blockchain networks? 1) multiple Ethereum networks? 2) multiple different networks such as Ethereum, Hyperledger and etc? and 3) by imagine They are Internet of things ...
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1answer
16 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
23 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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29 views

Why DNS domain names are not allowed in ethereum for peer discovery?

In a private ethereum network we use admin.addPeer("enode://publicKey@ipAddress:port") to connect to a new peer. We need to make the private network as permissioned network. To achieve this we need to ...
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1answer
40 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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0answers
16 views

How do you show your node on ethstats.net on Ubuntu 18.04?

I have followed every guide I can find. Official docs, Afri's stackexchange question, and almost every result on google. I think that they are all outdated. How do I add a node to ethstats.net? I am ...
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1answer
27 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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0answers
31 views

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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1answer
83 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
159 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
26 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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0answers
29 views

what's the difference between Main ethereum network, Ropsten, Kovan and Rinkeby for metamask? [duplicate]

I am confused and not sure which one should i choose. Any help would be greatly appreciated
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2answers
124 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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0answers
48 views

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
53 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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1answer
198 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
26 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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1answer
28 views

Is it possible to 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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2answers
129 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
15 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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0answers
80 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
33 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
321 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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28 views

A problem has been found in the part that sends / receives the Ether

We are building an Ethereum based private network using two PCs. A problem has been found in the part that sends / receives the Ether after building. So I want to find the answer to this part. Once ...
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0answers
137 views

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
104 views

a problem in building a private network using Ethereum

There is a problem 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 { "config":...
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1answer
33 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
18 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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0answers
35 views

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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101 views

What's sharing through P2P ethereum network?

I'm a new user of ethereum. I didn't succeed to understand exactly which fields or states are shared through the P2P network in ethereum. I mean, is each execution's step of the EVM shared, or just ...
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1answer
287 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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1answer
238 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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0answers
676 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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0answers
320 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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0answers
47 views

Encrypted Handshake with pydevp2p

I am searching for an example implementation on how to do an encrypted handshake with pydevp2p. It is listed in Features but I can't find any documentation on how to do it.
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1answer
119 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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1answer
73 views

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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0answers
166 views

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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1answer
144 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 ...
5
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1answer
293 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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0answers
23 views

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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1answer
45 views

Does running Ethereum Wallet support the network?

If I keep the Ethereum Wallet open, am I helping the network? Am I mining?
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0answers
203 views

bind: The requested address is not valid in its context

When I want to start an Ethereum node through the public network address(106.120.206.182:7999) always error(bind: The requested address is not valid in its context.),I tried to solve the problem by ...
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1answer
772 views

Connect Geth to solo network

I've done a lot of searching and found lots of information on how to create an Ethereum private testnet and etc, as well as connecting to the newly created Ethereum private testnet through geth in the ...
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0answers
61 views

Private Blockchain Reserved Nodes Disconnecting

Using Parity I have a private blockchain with 5 reserved nodes specified with --reserved-nodes /path/to/file. After a few days of conectivity, the reserved nodes stop talking to each other. It is ...