Questions tagged [connection]

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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?
0 votes
1 answer
209 views

Where can I find RPC_User and RPC_Password for my Python Script?

I'm still struggling with this to obtain "rpc_user" and "rpc_password" this is the Python Script I did try others to fill in others network like Blockdaemon.com but it does not ...
1 vote
1 answer
218 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 ...
2 votes
1 answer
53 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 ...
2 votes
1 answer
35 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?
0 votes
1 answer
63 views

How to force node to use tor connections, onlynet=onion already

I've followed all these steps How can I setup Bitcoin to be anonymous with Tor? I've added onlynet line in my conf file, but all my peers come with ipv4 connection. When I run getnetworkinfo I get ...
2 votes
1 answer
152 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 ...
0 votes
1 answer
157 views

Running bitcoind regtest with docker containers

I am running bitcoind regtest locally with the method from this article https://medium.com/ssde/how-to-use-docker-to-setup-multiple-bitcoin-test-nodes-on-your-own-mac-phase-i-8c6e5442c189. However, ...
2 votes
1 answer
61 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 ...
1 vote
2 answers
132 views

Can a Bitcoin node create an outgoing connection to a inbound node?

I'm trying to figure out if we can create an outgoing connection to a inbound node (a node which we are already connected to, but the remote peer has initiated the connection). I know that this does ...
0 votes
1 answer
502 views

Bitcoin Core JSONRPC only accept requests with 0.0.0.0 in configs

I've lunched a Bitcoin Core server, and trying to connect to it via JSON-RPC. This is my configuration settings: server=1 rpcuser=admin rpcpassword=password rpcport=1234 rpcallowip=94.183.32.151 ...
0 votes
0 answers
63 views

Connection error

i have installed bitcoin node, it was syncing before i went to sleep, i want to know the percentage of the synced, anytime i query on the bitcoin-cli getblockcount ,i get this error " error: ...
8 votes
5 answers
13k 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/...
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>> ./...
1 vote
0 answers
46 views

Why variations in tor onion service incoming node identifcation formats?

With these bitcoin.conf parameters: proxy=127.0.0.1:9050 listen=1 onlynet=onion bind=127.0.0.1 externalip=[my 64-char code].onion [plus 32 addnode=[onion address] entries] I quickly get 18 outgoing ...
12 votes
2 answers
952 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 ...
1 vote
1 answer
324 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 ...
9 votes
1 answer
442 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 ...
1 vote
2 answers
125 views

Which peers does a node broadcast a new block to?

In the Bitcoin network, when a miner discovers a new block, he needs to broadcast it to other nodes. Does the node only broadcast to outbound connections or does it broadcast to inbound connections as ...
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 ...
5 votes
2 answers
2k 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] ...
0 votes
1 answer
214 views

Bitcoin V0.1 Not Connected

My Bitcoin V 0.1 says, "not connected" when I try to generate coins. I have ensured the port is connected through the firewall. Also, I have read that V 0.1.3 corrected this problem. However,...
0 votes
0 answers
507 views

Problem connecting on Slush's pool with GUIMiner, i tried many Host adress to connect, every time it says the target computer expressly reject it

I'm on Windows 10 with GUIminer, i want to mine on the slush's pool but every time i enter every host adress i saw it didn't work on slush pool. I entered the right login for my miner and on ...
1 vote
0 answers
141 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 ...
1 vote
1 answer
313 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 ...
3 votes
1 answer
579 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 ...
0 votes
1 answer
209 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/...
2 votes
2 answers
606 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 ...
0 votes
0 answers
698 views

Connection Refused when running bitcoind in a non-root user and trying to make RPC calls

I'm new to Bitcoin development and I'm currently having difficulties trying to make RPC calls to a Bitcoin-Core daemon running in a SSH server. I suppose that the problem is with Firewall or closed ...
1 vote
0 answers
134 views

Bitcoin Core client on multiple computers

I have one computer with a full node bitcoin core. I would like to have bitcoin-qt installed on a different computer but I don't want to download the full blockchain again in the other computer. I ...
1 vote
0 answers
258 views

Why does my public IP show a Bitcoin Node is running when it is set up over Tor?

I've set up my node to run exclusively over TOR. But when I check https://bitnodes.earn.com/ and a few other sites with my public IP to check if a bitcoin node is accepting incoming connections, it ...
1 vote
1 answer
65 views

Why connected node count have dropped since august 1st?

before 1st august i used to connect to 55+ nodes on my bitcoin-core, even if i kept the bitcoin-core running for 12 hours. but after 1st of august, the connected nodes count is not going above 15-23 ...
35 votes
6 answers
29k 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 ...
0 votes
1 answer
68 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
1 answer
1k views

Error connecting to json rpc server

For testing purposes, I need to connect from a web page in my shared hosting account (on the public internet) to my json rpc server which is running on my laptop . So bitcoind is running on my laptop, ...
1 vote
1 answer
99 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
1 answer
62 views

How does blockchain ensure that a closed loop in network is not formed?

Suppose there are 9 nodes and each node can connect to 8 other nodes. All these 9 nodes connect to the 8 others. Then when a new node comes where does it connect to in this case? All the current nodes ...
0 votes
1 answer
3k views

Port 8333 and Issues to have a connection

So, I have a website, and that website is going to use Bitcoins. Right now, I'm trying to connect the bitcoin core with the website. But I have a lot of issues with port 8333: This is my error: http:...
1 vote
0 answers
97 views

How can I use raw litecoin protocol to connect to nodes?

I am trying to connect to litecoin nodes using raw protocol. I follow Ken Shirriff instructions from this article . My code works perfect with bitcoin, so I just replaced bitcoin nodes connection ...
1 vote
1 answer
927 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 ...
0 votes
0 answers
901 views

Unable to connect to litecoin-qt server from more than 3-4 machines

I've created a litecoin-qt server with the following configuration: { "pools" : [ { "url" : "http://192.168.10.5:9332", "user" : "something", "...
4 votes
1 answer
347 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 ...
2 votes
0 answers
183 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 ...
1 vote
0 answers
92 views

Bitcoin core closes inbound connections every 10 minutes

I noticed that Bitcoin core will close incoming connections every 10 minutes. Wireshark captures [FIN, ACK] are received from the node. It looks like Bitcoin core is monitoring the connection time. ...
0 votes
1 answer
103 views

Does bitcoin-core software/client connects with only same version number nodes?

i am trying to connect to maximum number of nodes. i noticed there are many receive version message in debug.log file so i have question, does the bitcoin-core connects to only those having either ...
0 votes
1 answer
694 views

Redirection to pool

dear friends. Due that my ISP blocks connection to pools i need to make a redirection via VPS that i has to a mining pool. I am very bad at networking and hardly can imagine how can i accomplish this. ...
2 votes
1 answer
275 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 ...
0 votes
1 answer
433 views

Are incoming connections required for mining?

I am setting up a RPi3 Mining node for fun. I know that it will have less than 8 connections that are outgoing. I know that if I was able to configure my network and router to allow incoming ...
1 vote
2 answers
890 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. ...
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 ...