Questions tagged [connection]

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25 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 ...
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1answer
57 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 ...
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2answers
406 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] ...
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1answer
53 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,...
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0answers
44 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 ...
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0answers
31 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 ...
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1answer
48 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 ...
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1answer
79 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 ...
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1answer
108 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 ...
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1answer
60 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/...
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2answers
115 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 ...
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1answer
48 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 ...
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0answers
396 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 ...
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0answers
40 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 ...
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0answers
98 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 ...
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2answers
85 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 ...
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1answer
47 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 ...
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1answer
594 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, ...
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1answer
80 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?
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1answer
54 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 ...
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0answers
80 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 ...
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1answer
2k 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:...
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1answer
325 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 ...
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0answers
70 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. ...
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0answers
148 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 ...
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1answer
61 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 ...
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1answer
86 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 ...
2
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1answer
202 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 ...
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1answer
442 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. ...
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1answer
326 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 ...
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1answer
873 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 ...
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0answers
506 views

How to install correctly this PiWallet Script in Ubuntu?

Good evening everyone.   I'm trying to set up the piWallet wallet (https://github.com/johnathanmartin/piWallet) on Linux.  I was able to successfully install the "Bitcoind Server" (which works very ...
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1answer
224 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 ...
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2answers
1k 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 ...
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0answers
75 views

src/net.cpp | What does “nUnkBias” define/mean

net.cpp for example: // use an nUnkBias between 10 (no outgoing connections) and 90 (8 outgoing connections) CAddress addr = addrman.Select(10 + min(nOutbound,8)*10); What does this line ...
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1answer
2k 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 ...
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1answer
325 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 ...
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5answers
7k 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/...
2
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1answer
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, ...
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1answer
894 views

Can exist bitcoin network with all nodes behind NAT?

If I run bitcoin client for the first time its try to make TCP connection with saved list of IPs and port 8333 -other nodes. If this nodes are behind NAT with IP 192.168.0.XX and public IP from the ...
7
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1answer
5k 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 ...
2
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0answers
136 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 ...
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1answer
157 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 ...
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1answer
745 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 ...
2
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1answer
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?
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0answers
40 views

Bitcoin Peers Connection [duplicate]

I would like to clarify how a client connect with peers. I guess the client has a database which looks for possible peers and how long it connected to them. In case of the first connection, ...
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1answer
816 views

miner_proxy and minerd Settings

I've started a mining account of Wemineltc.com, and have decided to go down the track of CPU mining. I looked up the relative tutorials on how to do so, and I got some different results. I set the ...
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1answer
2k views

How to Enable Port Forwarding for Litecoin Mining?

I've just started Litecoin mining, and I've realized that my blockchain takes eons to download, even though its only less than 4GB. I've read several other posts on the same problem, but none of them ...
1
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1answer
373 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 ...
7
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4answers
8k 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>> ./...