Questions tagged [go-ethereum]

Go Ethereum (short: Geth) is a Golang implementation of the Ethereum protocol.

1,868 questions with no upvoted or accepted answers
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E/Go: fatal error: thread exhaustion

I am experimenting with the geth-android library with light-client and in-process node from @karalabe. I could successfully sync with the testnet node from @phonikg, unfortunately this one is down now....
9
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2answers
783 views

Running a geth light client, how do I resolve the error: “No trusted canonical hash trie”?

I've been running a geth light client to deploy smart contracts through Truffle Migrations to mainnet. I'm getting: "Error: No trusted canonical hash trie". Any help in what this entails and how to ...
8
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1answer
865 views

getting started with geth and ENS commands: Error: invalid address

I'm starting from square zero, sorry. I'm just trying to get a javascript console up and running so that I can learn more about ENS: http://docs.ens.domains/en/latest/userguide.html#resolving I've ...
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0answers
3k views

Why is Geth's “fast” sync now the default, whereas before it wasn't?

As of version 1.6.0, the default method used by Geth for syncing the chaindata is "fast": The default sync mode is --syncmode=fast, for full sync please use --syncmode=full. Previously, the ...
7
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2answers
814 views

What filesystem should I use for geth and leveldb?

I used old LGA775 machine for running geth node. Its mobo has older sata 3gb/s (benchmark showed that ssd bottlenecked there) and only 4gb of DDR2, with windows installed. So syncing is a real pain ...
7
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1answer
524 views

Installing go-ethereum nodes using docker swarm?

Has anybody installed and configured go-ethereum nodes using dockerswarm ? Appreciate if anybody could share any docs or relevant information.
7
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4answers
3k views

Sync done but latest block number 0

I am running geth 1.8.0 I have been running the node for over 24 hours > eth.syncing false > eth.getBlock("latest").number 0 Is this a valid state? Why is the number 0 even though syncing is ...
6
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1answer
66 views

Can we avoid the protocol overhead of JSON-RPC and directly connect to GETH through some interface?

I want to build a middleware that adds additional data to JSON RPC responses. This middleware would sit on the same hardware or machine as the GETH node. The traditional approach would be to simply ...
6
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0answers
638 views

What is the safest way to use WS-RPC server in geth?

In this answer, it is suggested that it is not safe to use --wsorigins="*" for security reasons. What are the security reasons? => How could I make WS-RPC server connection secure in geth?...
6
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1answer
570 views

How to change Geth PoA Clique block sealing time?

I have used puppeth to generate genesis file in which I set sealing time to 30 seconds. I have set up one miner. Now, I want to change the sealing time to 5 seconds. How can I do that on same ...
6
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0answers
598 views

What are the ramifications of changing `--port` in geth?

If I'm running a full node with --lightserv enabled for several hundred clients, what are the ramifications of me running geth on a port other than 30303? If I change it to --port 2345 will I still be ...
6
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2answers
1k views

Smart contract erc20 code snippet to prevent buyer token transfers

I´m going to start a token pre-sale and I want to be able to send the tokens to the buyer but prevent the buyer to send tokens to another wallet. I tried the following in my ERC20 smart contract but ...
5
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0answers
83 views

Is go-ethereum performance much affected by linux filesystem choice?

Storage performance often seems to be a bottleneck when running a geth node, even when running on SSDs. Does anyone know of performance comparisons under different linux filesystem choices? By ...
5
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0answers
355 views

PoA network with half million blocks, sealers stopped

System information Geth Version: 1.8.17-stable Git Commit: 8bbe72075e4e16442c4e28d999edee12e294329e Architecture: amd64 Protocol Versions: [63 62] Network Id: 1 Go Version: go1.10.1 Operating System: ...
5
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1answer
915 views

Bootnode public address

I am trying to deploy an small private Ethereum network using geth. I have a server running geth configured as a miner in my local network. In the other side I have a droplet in DigitalOcean that I ...
5
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2answers
1k views

Geth: bootnode tool and --nodiscover

In Geth, if I use the --nodiscover option, my node won't be discovered by default from other nodes. Conversely, with bootnode tool implemented in geth, first I have to generate a key, then I have to ...
5
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1answer
833 views

Extremely slow geth mining and synchronization for private blockchain

I am constructing a very simple 2 nodes private Ethereum network to study the mining behaviour. The consensus algorithm is ethash. In order for the 2 nodes to discover each other, I also setup a ...
5
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0answers
757 views

Section processing failed

I am trying to connect a geth node to the network for several days with light sync, and I have encountered a lot of problems. The last to date is there are a lot (like > 100) of error messages that ...
5
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0answers
229 views

Can I `eth_call` a non constant function from javascript?

I know that I can't get the return value from a transaction (How to get values returned by non constant transaction functions?), and non-constant functions have return value because they can be called ...
5
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1answer
976 views

Call write function, which doesn't change contract value

I'm new in smart contracts and faced with one problem. After deploying contract to my test local blockchain network, i try to set new value via setter, after that I call get method of contract and it ...
5
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0answers
566 views

Error: missing trie node 60c376cdb14aec… (path)

I'm trying to start a geth node to connect to the Rinkeby test network by running geth --networkid=4 --datadir=$HOME/.rinkeby --verbosity 0 --syncmode=light --bootnodes=enode://...
5
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4answers
765 views

Can Ethereum DApps work without downloading all blocks in the network?

I've just downloaded Mist (the Ethereum wallet) and am waiting for all blocks to download. I'm on the test network and its been 24 hours with only 50% of the blocks downloaded. My question is, if one ...
5
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1answer
243 views

web3.eth.compile.solidity(source) throws me Invalid JSON RPC response

I am relatively new to Blockchains and when I execute the following command I am getting an error. contract mortal { address owner; function mortal() { owner = msg.sender; } ...
5
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2answers
189 views

Writing GBytes of data to disk, despite no network activity - what, precisely, is geth doing?

I'm watching geth 1.4.17 on Activity Monitor. Judging by the Network page, it's not doing anything. Rcvd Bytes is 5.9MBytes, and Sent Bytes is 2.6MBytes, and it's been that way for a while now. But ...
4
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0answers
856 views

What is the computing power of the Ethereum network in FLOPS?

The aproximate computing power of current Bitcoin network in terms of FLOPS (FP32) has been estimated at about ~80,000 exaFLOPS and being aware of the limits of the analogy because of the widespread ...
4
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3k views

geth “Smartcard socket not found, disabling” warning message

My node is running well in the last month. But somehow I restart the node and currently couldn't start probably, keep stuck at smartcart socket not found: Maximum peer count ETH=...
4
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0answers
141 views

Question on initial sync and Freezer (SSD and HDD)

I've kicked off a fresh fast sync of Geth v1.9.2 and after 3 weeks it's still pulling states (state trie). As per the documentation you can use the Freezer with a HDD as it references old data so ...
4
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0answers
93 views

Block Timestamps vs. Received Timestamp

I've been logging local timestamps when I receive blocks on two separate geth nodes to see which (if any) is consistently faster. But I just stumbled across something that I don't understand - in my ...
4
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0answers
201 views

Error trying to synchronize geth clique client after shutdown

I'm working with a private network using geth clique clients. Each time a node shut downs, (after a power cut, or just killing the geth process), if a try to put it to work again, the node can't ...
4
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0answers
288 views

How to access txpool pending transactions using Netherum?

I want to get list of transactions which are in pending state & queued state in txpool. I can see these transactions in pool using txpool.inspect command. I tried code given in nethereum sample ...
4
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0answers
485 views

How to Catch Connection Issues to Web3 Provider using Web3.js

My node.js script is able to successfully connect to the Web3 provider when both the private key (using truffle-privatekey-provider) and the provider host URL are correct. let privateKey = ..., ...
4
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3answers
645 views

How to make a Docker container talk to geth.ipc on local host

from web3 import Web3 web3 = Web3(Web3.IPCProvider("/Ethereum/geth.ipc")) print(f'IPC connected: {web3.isConnected()}') # want to return True I have the above script Dockerized and I'm trying to ...
4
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0answers
178 views

Does Geth and Parity store blockchain in level db in same format?

If not, what are the diffrences?, for example geth db format is: var databaseVerisionKey = new Buffer("DatabaseVersion"); // databaseVerisionKey tracks the current database version. var headHeaderKey ...
4
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0answers
2k views

Mining hangs on Generating DAG in progress

I am trying to initialize rpc using the below command and start miner using miner.start(1); geth --rpcapi eth,web3,personal --rpc --networkid=15 Mining starts successfully with below logs but it ...
4
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0answers
341 views

Unable to Add 3rd Proof-of-Authority Sealer Node

I have a geth POA private blockchain setup and running with 2 sealer nodes. Now I have setup a 3rd node as a sealer, and ran the following command on the both existing sealer nodes clique.propose(&...
4
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1answer
254 views

DEVp2p Wire Protocol tutorial on geth or Web3.js/Web3.py

I was looking to develop an application using ÐΞVp2p Wire Protocol and I'm having trouble finding an example or tutorial. I was able to find only ÐΞVp2p Wire Protocol's wiki. [Q] Does anybody has a ...
4
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2answers
589 views

Smart Contract firing send ether transaction that's not in the contract

I need some help with my smart contract, here's the smart contract code pragma solidity ^0.4.18; contract UserToken { mapping (bytes32 => uint8) public tokenBalance; bytes32[] public ...
4
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1answer
529 views

Contract transaction couldn't be found after 50 blocks in Kovan

When deploying contracts on the ledger I faced with issue Error encountered, bailing. Network state unknown. Review successful transactions manually. Error: Contract transaction couldn't be ...
4
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0answers
80 views

How to do a disaster recovery in private chains?

How can I do a disaster recovery on a private chain running ethereum, say for instance Quorum ?
4
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1answer
461 views

How can I use swarm with metamask or parity node?

I want to use swarm, but I wan't to download the all blockchain data. Is it possible to use metamask or parity node instead?
4
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1answer
368 views

Can't get geth to connect to own fullnode via --bootnodes param

I'm running a full node with LES protocol enabled which I want my light clients to connect to and sync from. I tried to do this by starting the light client with geth --light --bootnodes <my_enode&...
4
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0answers
298 views

Geth LES Client. Only synchronize the last 50 headers?

Using a LES client, is it possible to only synchronize only some of the last headers on first run ? I am not interested in the chain history. I understand the security implications of not validating ...
4
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0answers
1k views

flag provided but not defined: -rpc

I'm using Geth to set up a private ethereum network and this is the command: $ geth --identity "MyTestNode" --datadir "SomeDir" init genesis.json --rpc --rpcaddr "localhost" --rpcport "8000" --...
4
votes
1answer
800 views

Implementing a deposit/withdraw system

I'm having difficulty coming up with suitable logic to handle a hot-wallet style deposit/withdraw system where funds that are deposited have to be sent out to any number of different addresses. This ...
4
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2answers
249 views

After a successful geth fast sync, Mist began to sync all the db again

After 3 days of syncing with geth --fast, finally I got the last block synced I started Mist and it began syncing again from -3,800,xxx The DB folders were correctly set - I double checked them. Where ...
4
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1answer
4k views

UTC/json wallet file: deleted -> recovered -> corrupted. 0.1 ETH REWARD

--EDIT-- I have advanced in my research. The UTC/JSON file in question is a 491 byte file. There are 256 random characters in the file with each 16 possible characters. Like a 256-number long ...
4
votes
1answer
390 views

Why does geth -light start importing block headers from 3297471

I've been using geth to download the blockchain (on full) and one of the requirements for my research involves the use of light clients. I used 2 computers to download the blockchain on the -light ...
4
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0answers
318 views

Why are there discrepancies between client message signatures?

I have been investigating message signing using an Ethereum account, and have become somewhat bemused by the different signatures that I receive from different clients and different libraries. I have ...
4
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1answer
434 views

Create new account over IPC

I want to create a new account over IPC so I have started private chain with the below command geth --networkid=5 --datadir DataDir --ipcapi "db,eth,net,web3,personal" --ipcpath "/Users/smartSense/....
4
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0answers
100 views

Testnet blockchain inconsistencies - geth diverged from original blockchain?

I'm using go-ethereum instance: Geth/v1.5.9-unstable-fa999861/linux/go1.7.4. I cloned it from github (commit: fa99986143fe3dec08cdffcff9185e3700719edd). On Feb, 6th I synchronized with testnet via ./...

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