Skip to main content

Questions tagged [connection]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
36 votes
6 answers
30k views

How does one attain 1,000+ connections like blockchain.info?

At this moment, blockchain.info has over 1,900 nodes connected to their bitcoin client. I have been running an m1.small ubuntu 12.04 server and bitcoind for ~4 days straight now with no reboots. My ...
user3145's user avatar
  • 877
13 votes
1 answer
8k views

What is the difference between inbound and outbound connections?

I have port 8333 open with 8 outbound and 2 inbound connections. Is my node transmitting and receiving transactions and blocks from both types of connections? Or does the "inbound" flag mean I am ...
pinhead's user avatar
  • 5,144
12 votes
2 answers
977 views

What if a country 100% denominated in a cryptocurrency loses internet connectivity to the rest of the world?

Please assume a small island nation becomes 100% denominated in a cryptocurrency. Now please assume that for some reason the rest of the world manages to cut if off from the rest of the internet for ...
user avatar
11 votes
4 answers
10k views

Bitcoin is not connected in regtest mode

I am having trouble using regtest mode on Linux. Using pre-compiled version 0.9.2.1 for linux and starting regtest mode as instructed on bitcoin.org: <bitcoin-ver>-linux/bin/64>> ./...
Joe M's user avatar
  • 171
10 votes
1 answer
568 views

With peerblockfilters=1 hundreds of "btcwire 0.5.0/neutrino" connections are downloading TB from my Bitcoin node

I run Bitcoin Core 0.21.0 from a data center, unmetered, with compact block filters enabled (blockfilterindex=1 peerblockfilters=1). Soon after the restart, I get a huge number (140-200) of ...
qertoip's user avatar
  • 251
10 votes
3 answers
37k views

How to resolve "no block source available"?

I've got some trouble using bitcoin-qt. It stays on: "No block source available... 242 weeks behind." And "Catching up ... Processed 0" etc... Map port using UPnP is activated, and proxy disabled ...
Postnop's user avatar
  • 101
8 votes
2 answers
3k views

What exactly does the scary option "Allow incoming connections" do in Bitcoin Core?

Software authors seem to enjoy consciously freaking me out by having vaguely or entirely uncommented options in their software with very ominous labels. In Bitcoin Core's settings, it says "[X] ...
Dujon W.'s user avatar
8 votes
5 answers
15k views

Allowing Incoming Connection on Bitcoin Core

Good Evening, I recently installed Bitcoin Core v0.12.1 on my home server (running Windows 7) and wanted to allow it to accept incoming connections and used the guide found here: https://bitcoin.org/...
Dominick M.'s user avatar
7 votes
1 answer
3k views

Is there a connections limit on bitcoind?

I don't know if it is a lot or a few, but I see this number of connections: bitcoin-cli getnetworkinfo | grep connections "connections": 66, It does not seem to get over 70, is there an in-built ...
Vlastimil Burián's user avatar
7 votes
1 answer
423 views

List transactions *relayed* by my full node?

Running Bitcoin Core full node 24/7, with 70+ peer connections. Is there a bitcoin-cli command that will let me see the transactions that my full node has relayed from its SPV "clients"? FWIW, I can ...
Pressed250's user avatar
6 votes
2 answers
115k views

GUIMiner won't start mining on Slush's pool

I started co-mining on Slush's pool successfully for about 48 hours, but from there on I haven't been able to connect to it again. It logs in the console this, no matter if I'm using a valid worker ...
j4nSolo's user avatar
  • 163
6 votes
2 answers
1k views

How to make bitcoind connect to more nodes?

Let's say I have a dedicated server just for my bitcoind and for better reliability and some security reasons I want it to be connected to a much bigger number of nodes than it is willing to do by ...
knaperek's user avatar
  • 1,424
6 votes
2 answers
551 views

What are the risks of running an online store via a bitcoind connection using less than the minimum of 8 connections?

I have 1GB of memory to work with on my VPS. I want to run bitcoind as well as a few other crypto currency daemons. As it stands, number of connections seem to be the only value I can change that ...
user3145's user avatar
  • 877
5 votes
1 answer
429 views

How often does Bitcoin connect to the fallback nodes?

Does the standard client have a preference for connecting to fallback nodes (for example, by trying to have at least 1 connection to such node at all times), or are they treated like any other nodes?
ThePiachu's user avatar
  • 43.1k
5 votes
1 answer
279 views

Hypothetical situation: the Internet gets split in two, what happens with Bitcoin?

Let's suppose, that at some time the Internet gets split in two, possibly because of wartime, or another possibilities (there was once a situation, when Egypt managed to split the internet in their ...
czaks's user avatar
  • 158
4 votes
1 answer
234 views

What's a rule of thumb for setting the maximum number of connections?

Connectivity of full nodes varies a lot, ranging from phones with mobile service to servers in data centers. Also, many nodes probably have asymmetric bandwidth. Assuming the goal of maximizing ...
real-or-random's user avatar
4 votes
1 answer
930 views

Is Bitcoin a fully decentralized network, or how do clients connect to the network?

I read that Bitcoin is a fully decentralized network, but I don't understand how Bitcoin's client can connect to the network. I think that client must use some server for this action like other P2P ...
user3473712's user avatar
4 votes
1 answer
359 views

Sybil attack countermeasure

In Bitcoin Wiki Weaknesses: Sybil attack they mention that: "Bitcoin makes these attacks more difficult by only making an outbound connection to one IP address per /16 (x.y.0.0)". Why would this ...
user1's user avatar
  • 41
3 votes
2 answers
2k views

Is 8 the maximum number of incoming peer connections?

The reference here for running the bitcoin daemon does not really clarify what maxconnections mean. maxconnections= Maintain at most connections to peers (default: 125) Is this the max connection ...
Jane Wayne's user avatar
3 votes
1 answer
336 views

Does having a pruned node reduce its network score?

My node's network score (revealed by getnetworkinfo) is very low (<75). Most of the time there are no peers with incoming connections connected to the node. Is this because I'm running a pruned ...
Geremia's user avatar
  • 4,636
3 votes
1 answer
680 views

How does the Bitcoin p2p network work? Does it need port forwarding?

But does every peer node in the bitcoin p2p network need to have ports forwarded in order to participate? Otherwise, how does the p2p network work in the Bitcoin network? I heard that there are some ...
DanielSeow's user avatar
3 votes
1 answer
2k views

Bitcoin Server won't connect, timeout error

I am trying to run/sync bitcoind -server for the first time on linux and it is not connecting end of Debug log gives me this... new Added 14 addresses from ::: 0 tried, 91 new 93 addresses found ...
user6269's user avatar
3 votes
3 answers
5k views

0 connections now, but I had been using Bitcoin QT for a while without problems

I had been using my Bitcoin client for months on my Windows computer running XP. One day, I have trouble connecting to anything else on the internet, but my Bitcoin client seems to be running okay. ...
Adam's user avatar
  • 31
3 votes
1 answer
133 views

bitcoin-cli -netinfo not showing incoming ipv4 peers

I was trying to get my bitcoin node to be able to receive ipv4 peers for couple of days, but could not see any incoming peers even tho my port 8333 was open and reachable and to my best knowledge ...
Wiredancer's user avatar
3 votes
1 answer
176 views

What is [::]:0 address in bitcoin debug.log?

I am trying to run and connect multiple nodes on a single machine, i.e different nodes using different ports. I am having trouble in connecting the nodes and making them talk to each other. While ...
bawejakunal's user avatar
3 votes
1 answer
518 views

Bitcoin qt won't update

I installed Bitcoin Qt, and it began updating the blocks extremely slowly. After several hours, I restarted the program, thinking it might speed it up. Now, it appears completely stagnant; the icon in ...
Jason's user avatar
  • 31
2 votes
2 answers
804 views

Are nodes that don't accept inbound connections necessarily leechers?

Gavin Andresen and James Lopp seem to think that nodes that don't accept inbound connections could be called "leechers" in the same way a torrent leecher takes but doesn't give (or at least they did 5 ...
B T's user avatar
  • 1,638
2 votes
1 answer
4k views

Slush's Pool Worker Offline?

I am using GUI miner to mine on Slush's Pool. I have connected with my miner and everything is connected. I have even had a share accepted. But it says my worker is offline. Why is this?
Lauthai's user avatar
  • 145
2 votes
1 answer
2k views

Really strange issue when trying to connect Sparrow Wallet to Bitcoin Core

I am really loosing my mind on this. I am actually not a technical noob but also not the very best technican. But things like this should actually be very easy for me. What I want to do: I just want ...
Exchange_REC's user avatar
2 votes
1 answer
157 views

Connection to my full node via Python script suddenly fails

I run a mynode full node on a raspi for quite some time now and was playing around with Python scripts to connect and send txs. This worked fine until lately. Turns out the connection establish ...
Matthias Russ's user avatar
2 votes
1 answer
300 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 ...
Pedro's user avatar
  • 743
2 votes
1 answer
1k views

JSON-RPC Connection Problem!

I use bitcoind. And I have simple bitcoin wallet with simple login-register system. Error Code; Fatal error: Uncaught exception 'Exception' with message 'Incorrect response id (request id: 1, ...
Cihan Sancak's user avatar
2 votes
1 answer
78 views

How do I troubleshoot port accessibility to allow inbound connections on MacOS?

I'm wondering if anyone has experienced anything like this. IPv4 ports seem blocked. I have tried everything to open a port on my Mac but the port seems blocked. It's like the only port that can be ...
Kaizen's user avatar
  • 331
2 votes
1 answer
538 views

Mempool docker unable to connect to electrum server

I'm having a problem with "connecting" my mempool.space to electrumX server. My bitcoin core is working fine, electrumX server is fine as well and up to chaintip. I've installed docker and ...
son_of_satoshi's user avatar
2 votes
1 answer
85 views

How can I establish a connection with an IPv4 peer when my node has only IPv6?

I have a channel with someone who only has IPv4. I only have IPv6. How can I redirect the port in my LND to accept IPv4?
user209474's user avatar
2 votes
1 answer
270 views

SPV client TCP connection in python

I am trying to implement an SPV client in python (for my own learning). I want to start by making a simple TCP connection to a full node, but I either cannot get a response to my version message, or ...
anne1234's user avatar
2 votes
0 answers
200 views

Clarification of some getaddr() function inputs and outputs

In the Bitcoin system to discover new nodes, each node communicates with its peers by sending getaddr() to the peers. Based on the bitcoin implementation: //! the maximum percentage of nodes to ...
user1111's user avatar
2 votes
1 answer
296 views

How does the network handle changing IPs?

From what I understand, when a node first comes online, it requests a list of known IPs from all of it's peers. I'm assuming that by doing that, it shares its own ip to all of the peers, which in turn ...
jeanluc's user avatar
  • 123
2 votes
0 answers
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
787 views

Just installed bitcoin, but it won't connect

Total newbie at bitcoin; long time Linux user. kubuntu precise 64: My first attempt was just to download it (a slightly older version than the one from the ppa below), untar it and run the executable....
Joe's user avatar
  • 121
1 vote
1 answer
1k views

How to trigger port for Bitcoin client (e.g. 8333)

According to this it's possible to have incoming connections to Bitcoin client by forwarding port 8333 on the router. I was wondering if there is some specific port range Bitcoin Core uses for making ...
MeTTeO's user avatar
  • 113
1 vote
2 answers
938 views

Bitcoin client only has 1 connection? [duplicate]

I have had bitcoin for a little bit now. It has been going very smoothly. I have set up 3 accounts for various activities, privacy, and security reasons. I now can not get all of the block chain. ...
John Doe's user avatar
1 vote
1 answer
211 views

I Can't Get Inbound Connections to My Node

I recently set up a Bitcoin Core Node on a Raspberry Pi. It is fully caught up to the chain tip and has 10 outbound connections. I am using bitcoind to configure the node and have not been able to get ...
jctbtc's user avatar
  • 141
1 vote
1 answer
73 views

Why do nodes have a maximum peer count?

Why do nodes have a maximum peer count, in other words what could go wrong if each node is connected to all the nodes of the network?
Noah Bergh's user avatar
1 vote
1 answer
126 views

Low number from getconnectioncount

I have been running my bitcoin node for about 24 hours now and I'm hovering at 54 active connections. However, I thought that I would be at 125. Why is it that I'm not exceeding this number? ...
bitcoinluvr6969's user avatar
1 vote
1 answer
528 views

Only 10 connections on my raspberry pi full node

I'd like to know why I only get 10 connections on my full node? Is there something missing in the conf file? $bitcoin-cli -netinfo Bitcoin Core v0.21.0.0-7d8a10a6f - 70016/Satoshi:0.21.0/ ipv4 ipv6 ...
taway's user avatar
  • 21
1 vote
1 answer
1k views

How does one node connect to other nodes

I am wondering how does one client connect to whole blockchain system if there is no centralized node which connecting other nodes together? So for example if I want to create my own decentralized ...
Aren Hovsepyan's user avatar
1 vote
1 answer
403 views

What does this mean? RPC_CLIENT_NOT_CONNECTED = -9, // Bitcoin is not connected

I'm building a service which does some automatic Bitcoin transactions and balance checking. In the system I now created some logging, which told me that my bitcoind daemon (running on Ubuntu 14.04 ...
kramer65's user avatar
  • 315
1 vote
1 answer
548 views

Incoming and Outgoing Node Connections

Should I be concerned that I only see "Out" connections, and not "In" connections? What does this mean? Is everything fine, or is there something I'm doing wrong?
bluefuze's user avatar
1 vote
1 answer
377 views

difference between inbound and outbound connection

I'm running a bitcoin full node (bitcoin core) via Tor. I noticed I have only outbound connections (using maxconnections=16 in the conf file), but not even an inbound one. So which is exactly the ...
dcfg's user avatar
  • 404