Questions tagged [peers]
should be used for questions related to the peers of the bitcoin network
101
questions
1
vote
0answers
39 views
How long do peers normally stay connected?
I've been experimenting with the Bitcoin protocol by trying to connect to peers and receive blocks, which has been working so far. However, often peers will close the TCP connection within a couple of ...
0
votes
1answer
42 views
How do I increase the maximum number of outbound peers?
How can I increase the maximum number of outbound peers bitcoin core can connect to? I can't seem to be able to connect to more than 10. I've tried using the -maxconnections flag but it doesn't seem ...
1
vote
1answer
61 views
When exactly are peers saved in peers.dat file?
I had tried few things when reviewed this PR: https://github.com/bitcoin/bitcoin/pull/22013
While reviewing PR https://github.com/bitcoin/bitcoin/pull/22651, I was expecting 1 peer to be saved in ...
1
vote
1answer
48 views
Do peers advertise their chain work?
If yes, is this how a node decides that the peer has the best chain for headers-first download?
0
votes
1answer
37 views
How to understand the first reply of a node
I have send my version message to a bitcoin node and the hexdump of his answer was this:
https://pastebin.com/QBNaeS0g
Maybe this is a network related question but I want to know the version used by ...
1
vote
2answers
79 views
Testnet3 app will not sync to peers
I was just trying to connect testnet3 to my own testnet node through the "trusted peer" and "skip regular peers" settings, but it seems that in this way it cannot connect to a ...
0
votes
1answer
93 views
Increase maximum number of outgoing connections for full node
If incoming connections are disabled, Max full-relay connections are 8: src/net.h#L64 and Max block-relay-only connections are 2: src/net.h#L68
How are these decided and how can a user change these ...
1
vote
0answers
145 views
Why does bitcoin core appear to freeze while connecting to peers on startup?
When I startup bitcoin-qt (version 0.20.1.0) on linux, at the bottom of the app is the mesage "Connecting to peers... 4 years and 10 weeks behind". It appears that things are just frozen, no ...
1
vote
0answers
139 views
Score value of my node is not rising
I'm running Bitcoin Core 0.20.1 in Debian Buster.
I run the daemon behind Tor network.
My current settings are:
/etc/tor/torrc
SOCKSPort 9005
ControlPort 9501
HiddenServiceDir/var/lib/tor/bitcoin-...
-1
votes
1answer
96 views
How does bitcoin core establish a peer to peer network
I've tried to look for an answer to this online and haven't found any. My question is: how does bitcoin establish a peer to peer network. Establishing a centralized network with a server in the middle ...
8
votes
2answers
1k views
What happens to transactions in the mempool when their parent transaction expires?
I was just reading the Coin Metrics Newsletter #53, and it included a section about the recent mempool congestion. After mentioning transactions that got evicted due to the network's queue of ...
0
votes
1answer
70 views
Can full node with only IPv4 connect to another full node with only IPv6?
As far as I know, IPv4 and IPv6 are two different protocols and direct connection between an IPv4 and IPv6 cannot be established.
If I run a full node with only IPv4, can my node connect to another ...
2
votes
1answer
60 views
How does having a large mempool and allowing a greater transaction ancestry set change the interaction with your peers?
Bitcoin Core by default allows up to 300 MiB of mempool data, and restricts unconfirmed transaction trees to an ancestry set of at most 25 transactions and 101 kvB of transaction data. Since these are ...
1
vote
1answer
79 views
Number of bitcoind peers drops precipitously every 30 days or so
I run bitcoind headless on a linux box with maxconnections=256 and port 8333 open on the router. Using Bitcoin Node Manager I monitor node status occasionally. Peer count of course starts at 8 and ...
0
votes
0answers
97 views
How to achieve fast mempool synchronization at startup?
I just started my 'occasional' full-node and I am watching the size of the mempool grow after full block synchronization - watch -n 3 'bitcoin-cli getrawmempool true |jq "length"' - it has around 4000 ...
0
votes
1answer
38 views
How to determine the peer/node that created a transaction?
You're running your node and you receive a transaction from a peer, how do you determine if that peer created the transaction or if it is simply relaying the transaction. In other words, can you map ...
3
votes
1answer
55 views
Transaction propagation criteria vs mempool inclusion cirteria
Do Bitcoin nodes propagate every transaction or only transactions that meet certain criteria? For instance, a transaction with a fee of 0 won't necessarily get included into a block and it might even ...
0
votes
2answers
74 views
bitcoin back-end blockchain storage
bitcoin uses blockchain
so blockchain is peer to peer,
every peer stores the data
so I wonder where does the data of all the bitcoins is stored?
who is peer in case of bitcoin?
so that peer gets ...
1
vote
1answer
240 views
The result of bitcoin-cli getpeerinfo command
When I type bitcoin-cli getpeerinfo in shell, conspicuous property of the result are addr and addrlocal addrbind.
14.xx is my address and others are peer's address.
I know that Bitcoin client can do ...
1
vote
1answer
21 views
Bitcoin network resources requirement
Supposing we are alone, could it be possible to run the whole bitcoin network and full capacity of it (maximum transaction per second by different peer) on a low end computer, and how can someone ...
1
vote
0answers
39 views
Why not connect to all (huge amount of) nodes?
If you mine, a good network propagation time is important in case of mining-forks. I read that bitcoin only connects to 8 nodes. I would connect to many nodes as I can support to minimize my block ...
0
votes
1answer
115 views
Can I connect to a node as read-only?
In my Electrum wallet I can open the Network Window and view Nodes I'm connected to. Here's an example: electrum4101870.fullhealth.net. I can also find public nodes at https://bitnodes.earn.com/nodes/...
0
votes
1answer
109 views
P2P getHeaders message - how to get block locator hashes
I'm trying to build my own block explorer
So that I need to use p2p bitcoin protocol. For that I'm using btcd (golang) lib.
According to bitcoin book I have to send version message (and receive ...
0
votes
1answer
235 views
Unable to find peers when connecting through tor proxy
I have tor running as a service on my computer and start bitcoind with -proxy=127.0.0.1:9050 but it fails to find any seeds through DNS or anything during startup, and even after leaving it on for ...
4
votes
2answers
168 views
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 ...
1
vote
1answer
64 views
Is there a way to distinguish miner nodes from other nodes?
In the bitcoin network, there are many different types of nodes. One of these types are miners and in the bitcoin network, is there any way to distinguish a miner node from a non-mining node? I'm ...
4
votes
3answers
145 views
Bitcoin core full node - Should I choose my peers or it's fine to use the hardcoded ones?
I have a full node v 0.17.1 running 12-14 hrs/day and I was wondering if it's helpful, for privacy or for whatever reason, to add peers (maybe from https://bitnodes.earn.com/nodes/leaderboard/) with ...
0
votes
1answer
154 views
Why are some of my peers rejecting this CSV transaction?
The CSV-redeeming TX I broadcast: https://www.blocktrail.com/tBTC/tx/807d464fff227ce98cfb5f1292069e2793e99f21b0539a1729cc460af32add77
The locktime was set for ten minutes, and the redeeming tx (...
1
vote
0answers
184 views
It's October 2018. ./bitcoin-qt -reindex-chainstate takes forever. Is there a way to speed this up?
Current version: Bitcoin Core 0.16.3
I think I have a corrupted blockchain download as my VM box was shut down in the middle of syncing. Which is why I'm doing a -reindex-chainstate
I have the ...
1
vote
0answers
45 views
How to set up a gateway node?
I have two nodes running in my local machine. one public facing and another connected ONLY to the public facing node. I ensure they are whitelisted and in different ports. the nodes connect just fine, ...
2
votes
0answers
29 views
Setting up node, no connection when announce ip address to peers [closed]
I want to announce my host name when running node. When I set nxt.myAddress=hostname or IPaddress, there are no connection to peers. But when I keep it empty everything is fine.
13
votes
4answers
4k views
Why doesn’t Bitcoin use UDP to do Blockpropagation?
Bitcoin uses TCP for P2P but why is UDP not used? Modern day internet has relatively low packet loss rate so UDP is reliable. Even if some packets are dropped the peers can always request for the ...
1
vote
1answer
86 views
structure of communicating with bitcoin DNSs to get list of nodes
I want to communicate with bitcoin DNSs to get list of bitcoin nodes.
for now I want some example and structure of messages between I and bitcoin DNS.
I found two DNS names:
dnsseed.bluematt.me
...
0
votes
1answer
126 views
Unwanted peers connecting to Altcoin
I am building an altcoin using the litecoin source code.
I have removed all of the Emplace Seed calls in chainparams.cpp for DNS seeding, changed my default node communication port to port 421 and ...
0
votes
1answer
50 views
Is a peer connection maintained for the life of the node, or is it recreated on every request?
Lets assume we have 2 bitcoin nodes, A and B. A is already up, and B is now coming up. B lists A as a peer node and attempts to establish a connection. A accepts, a handshake is completed and they ...
1
vote
1answer
855 views
Bitcoin core: connect to specific peers from file
I want to launch Bitcoin core connecting to a specific list of peers. I can do this using connect:
bitcoind -connect=<IP1> -connect=<IP2>
Is there a way I can put the peers I want to ...
2
votes
1answer
70 views
On a low level, how are long chains kept secret and later broadcast during 51% attacks?
I've been reading about the vulnerabilities of PoW crypto, and there's a part of it that I don't understand.
Suppose I wanted to stage a 51% attack on Bitcoin (not really feasible, but bear with me). ...
1
vote
3answers
1k views
How to run multiple node in same machine?
I have created an altcoin base on litecoin source code. I want to test it in multiple node to test peers of each node weather each node can connect to each other. So I try to run "mycoind" in multiple ...
2
votes
1answer
353 views
How Do Peers Choose Which Peer To Trust?
So the way I understand how the blockchain works is that each new block uses the previous block's hash, which means if my block[100].hash != someone_elses_block[100].hash that means that either I ...
1
vote
1answer
85 views
Does Bitcoin limit the number of parallel connections from the same IP?
Is there a measure in place to prevent an adversary from connecting to a Bitcoin node many times in parallel, thus saturating its open connection slots?
0
votes
2answers
51 views
Can cryptocurrencies never be fully decentralized because finding peers is centralized?
When initially running a cryptocurrency client, it needs to fetch peers from a centralized source. If an attacker gains control of all of a client's default peers servers, they would be able to ...
1
vote
1answer
145 views
Sending RPC-JSON Commands to Bitcoin Peers
Is it possible to send some commands to Bitcoin Peers? for example decoderawtransaction command?
1
vote
1answer
2k views
bitcoin core node cannot route to peers
I'm trying to sync a new full node in the cloud, however it's syncing a lot slower than I am used to: I am roughly at 70,000 blocks after about 12 hours.
It doesn't seem to be slow IO, iotop shows ...
1
vote
0answers
360 views
Bitcoin ABC stucked on connect to peer [closed]
So i have a testnet bitcoin cash that i just put txindex=1 (because a api requires this) and it stuck on block 1155875 and I restart the core and even follow the step in this thread: https://www....
2
votes
0answers
459 views
Under what circumstances does bitcoin-qt ban a peer? [duplicate]
Under What Circumstances Will Bitcoin-qt Ban A Peer?
In my bitcoin-qt wallet, I am noticing that often there are a lot of banned peers.
Sometimes I have as many as 10 peers banned within the wallet, ...
1
vote
2answers
428 views
How bitcoin is peer to peer?
Bitcoin's whitepaper says that "A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution"...
2
votes
2answers
5k views
Finding IP addresses of all bitcoin miners
I understand that the transactions don't have any IP info in them but I am curious to know if it is possible to enumerate over list of all the IP addresses involved in mining?
1
vote
1answer
751 views
How to reset node information in Bitcoin Core?
I think I've just put the wrong node IPs through console and I forgot all the IPs.
I would like to reset all the node information to the initial.
Should I just delete peers.dat?
2
votes
1answer
297 views
Can malicious peer hack freshly installed bitcoin-core node
I'm considering two scenarios of hacking freshly installed bitcoin core node.
Does freshly installed bitcoin-core node have genesis block included in the installation?
This fresh node contacts some ...
1
vote
2answers
264 views
Should port forwarding for running bitcoin be done also on the ISP's router?
Follow up question on What is the NAT traversal technique used by bitcoin.
The network architecture described here https://superuser.com/questions/1109859/2-routers-connected-in-series-and-port-...
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