Ethereum

Questions tagged [p2p]

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where to host my Java web app to fully decentralised?

I need a idea to host my webapp to be on some secure distributed network. my client doesn't want to deployed on aws or gcp. he wants it to be on decentralised network p2p. Your suggestion and advice ...
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8 views

How can two light nodes on a chain communicate individually?

Let's say I have two light nodes on a chain and I want them to exchange data ~3KB without appending anything to the chain. They are not on local network. How can I achieve it?
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Implement custom Ethereum client that asks Nodes for their connected neighbours

I'm new to Ethereum so please pardon my lack of knowledge on the field. For that reason my question might be too broad as well. I'm working on a project that visualises a topology graph of the whole ...
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How to retrieve IP address and Port from Ethereum Node Records (ENR)?

Here are four Ethereum Node Records (as per EIP-778): - "enr:-Iu4QGuiaVXBEoi4kcLbsoPYX7GTK9ExOODTuqYBp9CyHN_PSDtnLMCIL91ydxUDRPZ-jem-...
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how to increase peer count when inboud 30303 port has been forbidden by firewall?

to protect my geth node1, I need to let it behind a firewall which forbidden inboud of 30303 port. In the meanwhile, I start another node2 out of the firewall, and I add node2 to node1's peer list. ...
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1answer
115 views

Target addresses in Kademlia

I'm currently trying to understand the Kademlia protocol implemented in Ethereum in order to discover other peers in the network. If I understand these lines correctly, a nodes uses both random ...
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1answer
39 views

How many nodes does Geth attempt to connect to by default?

Bitcoin Core tries to connect to 8 nodes by default. How many does Geth attempt to connect to for the eth protocol (normal network gossip)? Is there a set number in the first place?
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1answer
305 views

Why kademlia for p2p?

It seems pointless to me. I looked at the actual implementation. Kademila is used to discover peers, but there is no gained benefits. As when the node connects to peers, it simply just grab from the ...
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1answer
60 views

Can non-default port (not 30303) be a reason for the small number of peers?

I have two ethereum full nodes in Rosten network with non-default port (not 30303). One has net.peerCount = 3, the next one has net.peerCount = 0 and I can't sync it more then 24 hours. Also, I have ...
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1answer
499 views

How Are Transactions/Blocks Broadcasted

In Ethereum, when a node ‘broadcasts’ a transaction or block, what algorithm is used to broadcast that transaction or block to all the nodes? Also, how does this algorithm discover peers? What are ...
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2k views

How do I bind geth to a specific network interface?

Currently geth listens on all interfaces (0.0.0.0:30303). I need to bind the main port 30303 to only a specific network interface in the device, which would normally be accomplished by specifying a ...
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In which components can geth be split? [closed]

I'm interested in how does the process "geth" (in a full node) work. I mean in which components can the geth conceptually be split. In my understanding there should be at least (conceptually) three ...
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1answer
611 views

P2P file sharing nodes using blockchain?

I want to make a p2p file sharing program where there are hosts (nodes) and renters. Files are stored on the hosts' PCs. I could just have a central server providing the lookup information as to which ...
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1answer
83 views

How does it the geth ethereum platform to automatically connect to the nodes that are in the main network of Ethereum?

I have tried to make connection between several nodes in my private network, but I do it with a enode direction, but Ethereum network does it without knowing my enode, I want to know what kind of p2p ...
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29 views

Is an accurate clock really required to participate in the Ethereum network?

The Ethereum documentation states: https://github.com/ethereum/homestead-guide/blob/master/source/network/connecting-to-the-network.rst#static-nodes-trusted-nodes-and-boot-nodes "An accurate clock ...
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611 views

p2p connection library for Blockchain example

I would like to implement the missing p2p communication for this example repo. Does anyone know the best library I could use to implement communication between nodes? Moreover a tutorial or guide to ...