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Questions tagged [p2p]

The tag has no usage guidance.

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How to confirm how many peers a node has?

When a node requests one of it's neighbours for a list of it's peers, that node responds with a list of all of it's neighbours. I'm just wondering is there a way to confirm that those nodes are ...
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Creating a bitcoin simulation

I want to create a bitcoin simulation where I can simulate information propagation similar to that of the real bitcoin network. I would then like to change how information propagation works in this ...
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1answer
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json-rpc and p2p port protocol type

What type of port protocol do json-rpc and p2p use? does it use TCP or UDP? If possible, can you config or reprogram the open-source and compile the source to use TCP only if it also uses UDP?
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Private Blockchains: Blocks’ validation

I’m a software developer and I’m trying to understand blockchain at a code level I have the following issue: There’s a private blockchain, this private blockchain does not have any relation to ...
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1answer
30 views

How does a node decide whether a block is valid?

I'm a software developer, and I've been trying to figure out how a node decides whether a block is valid, I do understand the hashes in bitcoin, the merkle root, and all those aspects but my question ...
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Why should SPV nodes operate on the P2P network?

I understand there are advantages for the SPV client to acquire header-chain and subsequent inclusion proofs over the p2p network: Peer discovery P2P node interface is public Reuse of P2P messaging ...
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1answer
47 views

Possible better peer-to-peer protocols for Bitcoin?

As we know, bitcoin uses flooding in order to propagate blocks and transactions across all the nodes in the network. As it was launched in 2009, it's been almost 10 years since it's launch and I was ...
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Did Bitcoin Core relay blocks sequentially or in parallel to peers before Compact Blocks?

As I can see in the Bitcoin code, currently a node sends a block in parallel to all its peers. This makes sense as the block sending time is relatively small compared to the P2P latency. However, my ...
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What is the tradeoff between privacy and implementation complexity of Dandelion (BIP156)

Dandelion is a new relay protocol for transactions on cryptocurrency peer-to-peer networks. It has been heralded as a huge privacy improvement for cryptocurrencies at the networking level– I'm ...