Questions tagged [network]

This tag should be used for questions related to the Bitcoin network and communication between different nodes on the Internet.

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What is meant by getnetworkinfo: networks: reachable = false

What do all the reachable: false's mean under each network? My node is connecting fine to other peers both in and out, I assume via IPv4 (since I didn't configure anything else special). Is my node ...
pinhead's user avatar
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5 votes
1 answer
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addnode in bitcoin.conf doesn't work (Regtest mode)

I'm trying to make to nodes on the same computer communicate. I set up two bitcoin folder with two bitcoin.conf files. bitcoin.conf in the second node is the following: rpcuser=bitcoinrpc ...
Tommaso Bendinelli's user avatar
4 votes
1 answer
183 views

How many bitcoins would it require for a sustained DOS attack on bitcoin network?

How many bitcoins would it require for a sustained DOS attack on bitcoin network? Without transaction fee, how many bitcoins would that be? How many transactions could we generate with 1 BTC ...
vi.su.'s user avatar
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3 votes
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Why no IPv4 incoming connections when IPv6 available?

I'm having some problems getting any incoming connections in Bitcoin Core (v0.15.0.1). I have verified that the machine running the client can receive incoming connections on port 8333 over both IPv4 ...
Malvineous's user avatar
3 votes
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247 views

Unable to limit tcp bandwidth using tc in QoS for localhost

I am trying to connect few bitcoind instance running on different ports on my local machine and control the bandwidth between those connections. I used the tc utility as following: #network interface ...
bawejakunal's user avatar
2 votes
0 answers
23 views

How do I set up my own custom signet?

Configuration: a Windows machine on a local WiFi network. For classroom purposes I would like to have a custom Signet network so students can get used with Bitcoin Core and Send/Receive. This is the ...
Bart DV's user avatar
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Listening only for local inbound connections over "clearnet", and using Tor for external connections

I want to connect some wallets to my node in my LAN, over regular connection (not Tor), but I don't want my node to use this "clearnet" connection for anything else (for example to connect ...
bl0ck3d's user avatar
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2 votes
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Version message C++

I learn bitcoin and I am trying to send a version message and get response, respectevily, by using C++. I can not find any examples or articles how to do it in C++. I'm forming request and send it by ...
Mephistopheles's user avatar
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279 views

Low inbound connections and fixed getnetworkinfo score at 4

I spent hours researching for possible solutions, but couldn't find any. I set up my RPi4 bitcoin node about a month ago. It communicates through Tor (see torrc content). SOCKSPort 9050 Log notice ...
giusebage's user avatar
2 votes
0 answers
71 views

Was bitcoin peer to peer network affected because of the recent BGP hijack incident?

Can someone ELI5 BGP hijacking, impact on Bitcoin, countermeasures and if there were any issues because of the recent incident? Related links: https://twitter.com/ProtonMail/status/1311013829514539011 ...
user avatar
2 votes
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How to get multiple connections to the same node

I'm playing around with connecting my node to another one of my nodes to see how many incoming connections I can handle. Whenever I add node A from node B with bitcoin-cli addnode 1.1.1.1 add after ...
user46871's user avatar
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Why is my node being flooded with bitcoinj clients from 138.197.0.0/16?

I'm not the only one to have noticed this (discussions on reddit here and here): out of 70 or 80 incoming connections on my bitcoin core full node, about 50 are from just one single network (138.197.0....
MoTLD's user avatar
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162 views

No connection to Bitcoin network from known Tor IP?

I have a very fast home Internet connection. I decided to share my bandwidth by setting up a Tor relay on an unused machine on my home network. Any connection I make from my home connection to an ...
user31151's user avatar
2 votes
0 answers
240 views

What requirements does a router need to fulfill to support a network of 50 miners?

I am running a network with fifty miners, and I am experiencing network problems with my current router from ASUS, because its memory fills up and it requires to restart in order to work properly. I ...
ToQcHista's user avatar
2 votes
1 answer
388 views

Blockchain receive payments API Network propagation

I'm using the Blockchain API to generate an address to receive payments. I received a payment to a generated address, then Blockchain sends the received amount to the address I defined but that ...
andrepcg's user avatar
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Which are the default features enabled on the main three Lightning Network node implementations (LND, C-Lightning and Eclair)?

Which are the default features enabled on the main three Lightning Network node implementations (LND, C-Lightning and Eclair)? I mean the features shown when you use "describegraph" command.
Mani T's user avatar
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What is the most successful method to automate circular rebalancing?

What is the most successful method to automate circular rebalancing? We have tried the Torq and the LNDG app but so far they both do not wotk for us so we are still performing manual circular ...
Orange_Bitcoin's user avatar
1 vote
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101 views

Programmatically determining a full node in a peer-to-peer network

So I've found relatively few resources explaining the intricacies of the Bitcoin P2P network internal functionality. Right now, I'm writing a similar sort of peer-to-peer network, in another language ...
John Doe's user avatar
1 vote
0 answers
44 views

Connection Reset after sending mempool message

I build a python script to talk to bitcoin test nodes. When I'm sending mempool messages, my connection is getting is reset. Also sometimes when connecting to Jimmy Song's testnet node (testnet....
Bitcoingraffiti's user avatar
1 vote
0 answers
65 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 ...
adrian's user avatar
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1 vote
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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-...
PsySc0rpi0n's user avatar
1 vote
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248 views

Dragonmint T1, cannot find on network anymore (AngryIP Scanner) + NO SDCARD SLOT

I was using Braiins OS for a while, but couldn't get the voltages to settle down no matter what I did, so I went to Braiins OS website and noticed they would no longer be supporting the DM-T1, so I ...
Rick Tremblay's user avatar
1 vote
0 answers
32 views

About polluting the peer table

Is there a well-known method to pollute a specific user's peer table? Eclipse attack is not available anymore due to the patch after a paper was introduced. Can you give some keywords? Thank you!
Hyunsoo's user avatar
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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 ...
user674907's user avatar
1 vote
1 answer
1k views

Can't connect to Bitcoin RPC on DigitalOcean server

I am running bitcoind on a DigitalOcean droplet with public IP address e.g. 1.1.1.1. I would like to connect to it via RPC from another DigitalOcean droplet with public IP address e.g. 2.2.2.2. Both ...
user avatar
1 vote
0 answers
56 views

Does finding neighbors in Bitcoin consider locality and hop count?

When the list of neighbors is being gathered by a new nodes in the network, does it consider the distance between the nodes to find closest possible, or it just takes some random nodes? In other words,...
Ahmad's user avatar
  • 111
1 vote
0 answers
54 views

How often does a node connect to a random node?

I'm trying to understand the likelihood that a node would connect to a sybil attacker, and the critical piece to this that I don't understand is: how often does a bitcoin node connect to a random node ...
B T's user avatar
  • 1,638
1 vote
0 answers
143 views

Can't inititate network handshake with my full node

I am running a custom Python script to initiate network handshakes with other nodes. While testing the code I decided to initiate an handshake with my own node but I am getting a timeout error. ...
Rajarshi Maitra's user avatar
1 vote
0 answers
62 views

Creating a tunneling (wormhole) service for bitcoin wallets

Zcash recently announced a new wallet and service to connect mobile devices to a node running on a private home network using a tunneling service they are calling "wormhole" (1). Basically it is ...
PW Kad's user avatar
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67 views

Addresses versus unique addresses

So, according to blockchain.info there are roughly 942,000 unique addresses as of a few days ago. When I go to the Bitcoin Rich List on www.bitinfocharts.com it looks like there are 23+ million ...
Lawrence Lepard's user avatar
1 vote
0 answers
36 views

What is the minimum amount of network messaging needed to get the latest block hash from a node?

Reference: https://en.bitcoin.it/wiki/Protocol_documentation#inv I want to be able to write the simplest possible script that is able to contact a Bitcoin full node (given it's IP and port) and get ...
pinhead's user avatar
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1 vote
0 answers
227 views

Bitcoin core or bitcoind as server on the network?

does anyone know if it is possible to use a specific bitcoin kernel installation on a network as a server for the internal network so you do not have to install multiple complete bitcoin core copies ...
Valter Buriti's user avatar
1 vote
0 answers
161 views

API request of blockchain.info over Java stops spontaneously

In my java class, I extract the hash of transactions from the files of blk...dat, then obtain the data of the corresponding transactions via reading from the URL: https://blockchain.info/rawtx/+ hash. ...
Aqqqq's user avatar
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1 vote
0 answers
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Bitcoin did not get to reciever

I sent $50 worth of bitcoin to my cousins blockchain bitcoin address, it said sent and the bitcoin amount deducted from my wallet. However, the bitcoin did not reflect in my cousin's wallet. I ...
eddychis's user avatar
1 vote
0 answers
2k views

v0.13.1 wallet - connect failed: Network is unreachable (101)

Noob here. Ran the core wallet on my Linux PC and looking for help as to why it is not working after syncing up the history of blockchain Tx's. Is this likely my router not passing port 8333 packets,...
Brad Baker's user avatar
1 vote
0 answers
60 views

Help with understanding Semaphore grants in OpenNetworkConnection

I am new to concurrent programming. Can any expert throw some light on the semaphore grant that one requires before acquiring a network connection ? bool OpenNetworkConnection(const CAddress& ...
Guhan S's user avatar
  • 85
1 vote
0 answers
105 views

Server cannot connect to Peers With Some Internet Connections

I use the internet at my work, at my house, and at various other places. The server can connect with other peers and get block data at all of these locations except for my home. What could be the ...
morsecoder's user avatar
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1 vote
0 answers
311 views

wireshark packet analysis missing checksum in version msg

I'm trying to send a raw bitcoin transaction through a raw socket connection in python. To debug I'm using wireshark to sniff the packets. Wireshark figures out that the packet is for Bitcoin and ...
Ethan's user avatar
  • 151
1 vote
0 answers
57 views

Which percentage of miners are using ASICs vs GPUs or FPGA? Is it possible to know?

One of the common arguments against Bitcoin is the energy consumed by the network. The total hash-power of the network can be obtained fairly easily, but I'd like to estimate how much of that is due ...
Joe Pineda's user avatar
  • 2,118
1 vote
0 answers
102 views

Does CGminer work with Network miners?

I have the black cube miners that work via cat5/network and have yet to be able to connect them to cgminer. I have looked all over the internet and haven't found anything about how to do it. So my ...
Caiapfas's user avatar
1 vote
0 answers
1k views

Multibit: Connecting

I am not able to connect to my wallet using Multibit ("Connecting..." on the bottom left corner). Im using the TAILS OS (Multibit and my wallet are located in the "Persistent" folder). After reading ...
user8751's user avatar
1 vote
0 answers
95 views

BitMinter - At what data rate communication happens between the BitMinter java client and the server?

Looking for how many KB or MB transferred each way every second or minute, whatever is appropriate. I am using a Macbook Pro and using GPU mining.
Medicine's user avatar
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1 vote
1 answer
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Is there any tool to extract the bitcoin transaction network from the blockchain?

I'm looking for a way to extract some data from the latest downloaded bitcoin blockchain. In particular I'm interested in extracting the whole transaction network, so input and output public keys used ...
Nellous's user avatar
  • 11
0 votes
0 answers
30 views

Load balancing for using more than 1 Internet connection to speed up Initial Block Download (IBD)

Have invested in good networking hardware and researching on failover scenarios using 2 connections - the home broadband and mobile LTE one - as well as load balancing to increase download/upload ...
jurijus01's user avatar
0 votes
0 answers
37 views

multiple socket address usage error - using rpc to index block hashes

When I am attempting to index and create an array out of all the blockhashes on the blockchain I keep getting this error: "[WinError 10048] Only one usage of each socket address (protocol/network ...
user2880722's user avatar
0 votes
0 answers
33 views

How to run master mining node with semi-offline slaves?

How can I run a master mining node with semi-offline slaves? I have a single master node that is fully connected to the internet (bidirectional). The master node is also connected to thousands of ...
fejyesynb's user avatar
  • 101
0 votes
0 answers
88 views

Failed Tls connection to LND with gRPC and REST using rust

I have been trying to connect to an LND node using Rust as a language. I have been constantly be given this error: tonic::transport::Error(Transport, hyper::Error(Connect, Custom { kind: InvalidData, ...
lescuer's user avatar
0 votes
1 answer
92 views

Network traffic peaks for Bitcoin Core GUI Node

I have the latest version installed, no SOCKS5 connexion. Sending maximum is around 4500Ko/s (also seeable on the picture). Do you know why it goes up like that ?
Romain's user avatar
  • 39
0 votes
0 answers
247 views

Why does Electrum never complete synchronization with a server?

How do I diagnose why electrum never finishes synchronizing? I've tried selecting networks individually without success. Can I ping a server to confirm connectivity?
Nicholas Saunders's user avatar
0 votes
1 answer
71 views

Can a full node measure bandwidth to and from its peers?

For example, can I run a full node, connect to some 8 peers, and measure my uplink and downlink bandwidth to each of my peers?
yujaiyu's user avatar
  • 139