Questions tagged [network]

a network allows computers to communicate and exchange data

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Embedding metamask or a wallet on a network in a webpage

just a random thought. Is it possible to embed a wallet on a network in a webpage? Sort of like moving part of metamask and making it a permanent built-in module in a webpage. This way, users do not ...
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I'm connecting to the wrong network but my configuration seems right

Trying to run truffle console I got this typical error: I've checked my configuration and it seems OK to me (I don't know why truffle is trying to connect to 127.0.0.1). Here you can see my project: ...
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128 views

Getting LINK for Ropsten network

I'm trying to get LINK for Ropsten. I'm using this faucet: https://ropsten.chain.link/ and, when I've added the new token, I've used this address 0x20fe562d797a42dcb3399062ae9546cd06f63280 (Chainlink ...
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How is 172ms block propagation possible?

Here you can read that avg block propagation time is 172 milliseconds till it is shared all over the blockchain. How is this even possible? You can clearly see that reaching some locations takes much ...
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Experimental data on transaction propagation time

Does anyone have empirical data on how long does it take to propogate a transaction thought out most of blockchain? I know we can speculate on how long it would take (like here). But I am interested ...
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network port udp:30303 could not be mapped: no UPnP or NAT-PMP router discovered

I keep getting this error and cannot start my geth client anymore. Google searched for awhile couldn't bring me to any working solution. Do you know how to resolve this?
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How to get events from a contract deployed on different network? - Web3

I have contract A in Avalanche FUJI C-chain. When I'm on C-chain testnet, I can get events from A using getPastEvents() in web3.js, but when I change the testnet (for example, to Goerli), I receive an ...
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499 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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Is there a need of network additional security measure

I didn't find information about the risk and threat of being connected to the Ethereum network / internet. I was wondering if we would need additional measures such as a firewall, proxy to protect ...
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Fictitious use case to send confidential data

I am designing the network architecture of a Fictitious agency that needs to send confidential data. So my questions are: Is it possible to send images through the Ethereum network? I've read that, ...
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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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Can I use a subnet mask with ws.origins?

I am trying to run my own geth node, as I am interested in monitoring the txpool's pending and queued transactions. I plan to mostly use a websocket connection from the same server, but it's possible ...
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What happens if two different states of smart contract conflict?

I'm newbie studying blockchain and Ethereum. While I'm studying, I've got a question. What will happen in the case of conflict of two different states on smart contract, e.g. from the network ...
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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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Throughput and Latency of Private Ethereum Network

How do I calculate Throughput and Latency of a private Ethereum network that I have set up locally on my computer? I tried the solution given in Measuring transaction latency and throughput in a multi ...
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Private network with limit supply

I'm just wondering if is possible to create a private network (Not development) with this characteristics: Max supply One account has all the supply already Nodes/peers can't mine Gas cost is always ...
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Truffle test doesn't connect to Ganache

I'm using Truffle and Ganache for my development environment. Using the truffle console or truffle external scripts everything works fine, but truffle test does not seem to be connected to Ganache: ...
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RPC connection fails

I launched my geth with those parameters : sudo geth --syncmode "light" --cache=2048 --datadir /mnt/ssd/ethereum --pprof.addr 0.0.0.0 --pprof It's running on a ubuntu server 20 on a ...
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Distribution of mined Blocks, its verification and the Longest Chain Rule

Hi all I am in need of a clear understanding of the distribution of mined blocks, the verification mechanism and the longest chain rule. How is a freshly new mined Block being distributed to the ...
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Why does ip address value differ in the enode url from the info output of a geth node instance to running admin.nodeInfo.enode in the js console?

I'm in the process of creating a private Ethereum network. I am able to successfully connect nodes on my local machine but unable to connect nodes in my LAN or outside my network. When I run a geth ...
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Rough estimates of transaction propagation latency?

Does anyone know any rough numbers for transaction propagation currently for the Ethereum network? I.e. how long does a submitted transaction take to reach 50%/95%/etc of nodes? Thanks!
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Which TCP and UDP ports are required to run an Ethereum client?

The geth CLI options suggest that per default the client listens on TCP port 30303. This page, additionally suggests that UDP port 30301 is used for node discovery. Is this all that is required or are ...
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Firewall blocks interactions with geth peers and it is not clear how to fix it

Input: geth on port 30303 port 30303 forwarding is enabled on router uPnP is disabled on router UFW firewall is enabled with the following rules: $ sudo ufw status verbose ...
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How large network traffic is expected for Ethereum 2.0 Staking node?

Would be interested what can be rough estimated network costs of running full staking client. For staking it's currently required to run: Eth1 node (Not counting initial sync which require initial ...
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Quorum permissioned network

How can I permission a quorum network? Imagine I have 3 nodes in my network and I install another node in my friends house. How can I prevent my friend add more nodes to my quorum network? thanks
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What is the computing power of the Ethereum network in FLOPS?

The aproximate computing power of current Bitcoin network in terms of FLOPS (FP32) has been estimated at about ~80,000 exaFLOPS and being aware of the limits of the analogy because of the widespread ...
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334 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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What is Fuse.io for?

I read that Fuse.io is a DPoS blockchain on the top of Ethereum, apparently to improve payment performance. What is Fuse? What is its purpose? If it is on the top of Ethereum, how payments may be ...
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Ethereum peer to peer load balancer

Is there any existing TCP load balancer product that is enode aware?
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Can I create my own Ethereum network? [duplicate]

I'd like to fork Ethereum code (hypothetically) to create my independent Ethereum-like network (another world-like computer network with its own structure). How can I reset or create new sets of ...
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2k views

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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137 views

Where are “pending” (newly submitted) transactions stored?

First of all, my terminology may be off, sorry about that. I understand how a blockchain holds data on transactions that have been "accepted" (i.e. a block has been mined). But if I decide to ...
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853 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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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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How different clients, with different implementations communicates through the network?

sorry for the dumb question, but i'm wondering how different Ethereum clients, like for example Trinity, Geth, or Parity, written in different languages, communicates over the network. I did not found ...
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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
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Other networks built off of Ethereum?

It looks like if I wanted to I could have the same private and public key for: Ethereum, Ethereum Classic, Tomochain, Vechain, Wanchain, and Aion networks because they were all built on a copy of ...
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Strange points of Casper algorithm

Currently, Ethereum developers are developing Casper Algorithm for Ethereum 2.0. According to their proposal, some validator are chosen randomly but validators has permanently authority to verify ...
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How do Ethereum mining nodes maintain a time consistent with the network?

We have established that the timestamp on a parent block has to be before the timestamp of a child block in Can a child block have an earlier timestamp than the parent block?. How are differences in ...
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How to copy the data from a running private network to another

I have two seperately running private ethereum networks,i want to copy the data from the first private network to the second one without stopping.I have tried multiple ways but was not successful.I ...
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48 views

Is there a use case of keeping 2 chains?

I know that Ethereum was forked 2 chains due to DAO hacking. so Ethereum Classic was borned at that time. 2 chains are distinguishable by different chain id. I had a strange idea, a malicious miner ...
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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 does a network latency become crucial? Looking for any sources / empirical benchmarks.
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How to connect a dapp on private ethereum network [closed]

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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1answer
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About Ethereum testnet 61 (Ethereum Classic)

I know that Ethereum was forked 2 chains due to DAO hacking. so Ethereum Classic was borned at that time but 2 chains are equal technically. Network number is different between Ethereum(number is 1) ...
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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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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 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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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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I'll never reach final block updating with geth, it's too slow

I´m updating my ethereum blockchain with geth. But I feel it is going really slowly. Each block is done in 1 minute, sometimes 30 seconds, but at this pace I'll never reach the final block, ...
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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 ...