Questions related to the test RPC client/simulator https://github.com/ethereumjs/testrpc
0
votes
0answers
18 views
Can't call contract functions from a separate contract deployed on same local testrpc (two separate Truffle projects)
I have two Truffle projects on my local machine and the contracts in them compile and deploy properly (no errors are raised and in my ganache-cli I get receipts with their addresses).
I'm trying to ...
0
votes
1answer
17 views
Transaction taking too long on Ropsten testnet
I checked the syncing status, it returns false. I submitted transaction with a very high gas value but it takes long time to get completed. This is my local ropsten node:
INFO [08-06|13:16:45.473] ...
0
votes
1answer
18 views
Invalid Address error when call setFoo() function
my remix
pragma solidity ^0.4.24;
contract Foo {
bytes32 foo;
function setFoo(bytes32 _foo) public {
foo = _foo;
}
function getFoo() public constant returns (bytes32) {
...
0
votes
0answers
8 views
Syncing ethereum upto a certain height and accessing information
I am using geth version:1.8.14-unstable. Is there a possible way to sync the Ethereum blockchain up to a particular height say 4 Million. Additionally, once geth-client is synced I would like to use ...
0
votes
1answer
16 views
Metamask won't display correct balance after creating customrpc for ganache accounts
I made a customrpc network on metamask using the correct server and imported a private key from ganache, which worked but the eth balance is displaying 0 when I expected it to display 100.
According ...
1
vote
1answer
114 views
Unable to execute web3.eth.accounts[0]
I'm following along with this short tutorial and ran into a few problems. I'm running testrpc in my console. However, every time I run my index.html I get an error. My index.html file is the following:...
-1
votes
1answer
15 views
Unable to transact funds in testrpc
I'm running a simple smart contract on testrpc using remix:
Contract Testing{
address [] public adds;
uint [] public amounts;
function bet() public payable{
adds.push(msg.sender);...
0
votes
1answer
43 views
How to be sure about “MetaMask web3 Provider” connection?
Note: This question is related to this : "Updated :" How to see "output" of "web3.personal.sign" in "browser"? ("Method personal_sign not supported")
...
0
votes
1answer
43 views
“Updated :” How to see “output” of “web3.personal.sign” in “browser”? (“Method personal_sign not supported”)
Note: I updated the html / JavaScript code according to the answer and I used THIS META MASK sample code for web3 provider. However, I receive the same error. I eventually did not understand that do I ...
0
votes
0answers
31 views
How to be sure “ethereumjs” is installed?
I installed ethereumjs library using following command:
npm i ethereumjs-testrpc
And here is the output:
And then I tried to run an html example which uses ethereumjs-vm. The example is here :
...
0
votes
1answer
44 views
MetaMask cannot connect to “localhost 8545”
When I choose localhost 8545 in MetaMask, apparently it is not able to connect. Please see screen shot:
I tried with several internet connection, however the same result.
Whereas, I can easily ...
0
votes
0answers
129 views
“UPDATED : ” “VM Exception while processing transaction: revert”
I tested signature verification of the code presented HERE as follows:
running testRPC :
root@ubuntu:/home/s# testrpc
EthereumJS TestRPC v6.0.3 (ganache-core: 2.0.2)
Available Accounts
=============...
0
votes
1answer
47 views
“The transaction execution will likely fail. Do you want to force sending? VM Exception while processing transaction: out of gas”
When I want to deploy a contract using testRPC and remix, I receive the following error message:
Gas estimation errored with the following message (see below). The
transaction execution will ...
0
votes
1answer
43 views
Problem of deploying contract with “testRPC” and “remix” : “creation of contract pending …”
When I try to deploy a contract using testRPC and remix, I receive:
creation of contract pending ...
I tried even the default contract of http://remix.ethereum.org.
Steps: First I open cmd. Then ...
0
votes
0answers
34 views
Metamask with testrpc, transactions forever pending
I'm building my first dApp using truffle, and have no issues getting it to play with testrpc on localhost. I recently installed Metamask and have it pointing to my localhost. Now when I try to ...
0
votes
1answer
25 views
Do we have to compile and deploy our contract to ethereum each time we start a test rpc?
I'm trying to develop a voting application, I have successfully compiled the app and also deployed it to ethereum blockchain. Now I've closed the test rpc and node console, and when I restarted node ...
0
votes
0answers
38 views
Error: VM Exception while processing transaction
I've got an errors while purchasing token with my test network, and the message is rpc error with payload, and an VM Exception while processing transaction.
Is my contract wrong or my function wrong?
...
1
vote
1answer
42 views
web3.setProvider is not a function
I am trying to learn about web3.js
I install
npm install ethereumjs-testrpc
and
npm install web3 // version 0.20.6
npm install ganache-cli // version 6.0.3
then i using the following code
var ...
0
votes
1answer
210 views
Error: Error: [ethjs-rpc] rpc error with payload {“id”:6223335088050,“jsonrpc”:“2.0”,“params”:
I have deployed a smart contract in Remix IDE using MetaMask and test rpc. I got the below error:
Error: Error: [ethjs-rpc] rpc error with payload {"id":6223335088050,"jsonrpc":"2.0","params":["...
1
vote
2answers
46 views
web3.isConnected() returns nothing when connecting to geth with web3.js(Version 0.19.0)
web3.isConnected() has issue. When connecting to an IPC node
I think it is waiting for something because when i starting my nodejs program nothing happens,
I am running ethereum node and try to ...
0
votes
1answer
102 views
How to convert getBalance output to ether in web3 1.0
I tried web3.js 1.0.0-beta.
I found in document method web3.utils.fromWei(value, 'ether') convert the wei to ether. In new version getBalance method work as asynchronous. how can I get the value from ...
0
votes
0answers
29 views
out of gas when deploying to test RPC and Rinkeby
I have a big contract, currently testRPC and Rinkeby deployable.
But if I add an extra state variable mapping in the contract, local test will not deploy and gives an "out of gas error", also rinkeby ...
0
votes
1answer
45 views
Truffle test not working when I add migration.js
I have written javascript tests that run fine with truffle test ./test/Token.js
However, when I have the following:
var UTO = artifacts.require("./uto.sol");
module.exports = function(deployer) {
...
1
vote
1answer
35 views
Is there a difference between the terms TestRPC and Testnet?
From what I understand, a testnet is just a local (or private) blockchain for developers to experiment on, and TestRPC is/was a specific implementation of a testnet for the Ethereum blockchain?
(I ...
3
votes
2answers
67 views
Want a large number of Test Ethers. How to get them?
I have made a proof of concept that works on Ropsten Test Network. Now for users to use it I need a large number of Test Ethers in my account. As far as I know, we can get only one ether with one IP ...
0
votes
1answer
52 views
ERC20 TestToken code returns 0 for allowance after approval [duplicate]
I have the following code in my testtoken.js and am wondering why the assertion fails with "AssertionError: allowance wasn't set to 30: expected '0' to equal 30".
it("Approve an allowance of 30 ...
0
votes
0answers
28 views
Why account balance can decrease when gasPrice is 0 and msg.value is 0?
It also spends pretty large amount, which doesn't seem to be related to gasUsed
Contract:
pragma solidity ^0.4.24;
contract Test {
bool i;
function hello() public {
i = true;
}
}...
0
votes
0answers
68 views
How can I watch my contract using Ganache testRPC?
I want to get the transaction hash + contract address ... using Ganache testRPC.
since I don't have the option of using etherscan because testrpc of ganache use everything locally.
0
votes
0answers
45 views
Ganache cli transaction hash collision
I am making couple of forwarding transactions (i.e. to contract address that just receives funds and proxifying it to main contract) locally on Ganache CLI running (old testrpc does the same result) ...
1
vote
0answers
154 views
Error on running any contract in online remix browser using Injected Web3 with Meta Mask
On running contract, I am getting error as shown below:
creation of VFCToken pending...
creation of VFCToken errored: Error: Error: [ethjs-rpc] rpc error with payload {"id":7746970824019,"jsonrpc":"2....
0
votes
0answers
17 views
opening port in Geth [duplicate]
How can a open a websocket port in geth that connects to private network not to the main or test net just like in testrpc or ganache? As Ganache doesn't support websocket i want to use geth just like ...
0
votes
2answers
25 views
Servers That Implement Ethereum RPC
Here is the documentation for Ethereum RPC. It looks straight forward enough, but I just need a list of servers that implement the RPC.
https://ethereumbuilders.gitbooks.io/guide/content/en/...
1
vote
0answers
33 views
How to create more test account when using Mocha to test Solidity smart contract?
By default there are only 10 test accounts being created, how do I create more when using Mocha to test smart contract?
I assume Mocha creates a testRPC instance somehow, there must be a way to ...
0
votes
0answers
52 views
Smart contract storage doen't work with ganache
I have this smart contract
contract Ballot {
struct Prop {
uint votes;
bytes32 data;
address[] validators;
}
mapping (bytes32 => Prop) props;
function ...
4
votes
3answers
168 views
Mocking blockchain for unit test quorum
Is there a way so that I can mock blockchain for unit test in quorum.
I do not want to set up a test blockchain for unit testing. Is there any possibility.
0
votes
1answer
39 views
How can I check the provider status ? if testRPC connected or not?
I have a problem with using : web3.net.listening
The case when I am connected to the testRPC is working and it returns me TRUE.
But the case I am not connected it returns me INTERNAL SERVER ERROR.
I ...
0
votes
0answers
14 views
How to run `testRPC` on an Android mobile?
I have a smart contract (solidity) along with a GUI written by JavaScript and HTML as follows:
solidity code:
pragma solidity ^0.4.15;
// -----------------------------------------------------------...
0
votes
1answer
46 views
Why I do not get returned value of function of my smart contract using testRPC and a Graphical User Interface?
I have a smart contract that is tested with remix and it works well. Its code is as follows :
contract Weechain:
pragma solidity ^0.4.15;
// --------------------------------------------------------...
0
votes
0answers
62 views
Problem of interacting with Smart Contract via HTML and JavaScript application
I followed and tested "Creating a Web UI for our Smart Contract" tutorial and it works well.
However, when I do exactly what I did in the above tutorial for THIS SMART CONTRACT, I do not see the ...
1
vote
2answers
265 views
Solidity Error: Exceeds block gas limit
When I start ganache-cli in one terminal window and run ./node_modules/.bin/solidity-coverage (command from documentation) in another I get
Error: Exceeds block gas limit
at Object....
0
votes
0answers
23 views
How to get 100k ether in testrpc? [duplicate]
Id like to run some unit tests in truffle with huge sums of ether (over 30k ether), but my default accounts only seem to have 100 ether in them.
Does anyone know how to increase this?
Thanks
0
votes
0answers
131 views
Oraclize : Ethereum-bridge on my local private chain
I can work with oraclize only using a private chain created with testrpc.
If I try to use the ethereum-bridge over my locally created private chain it doesn't answer, nether I get message in the ...
0
votes
1answer
96 views
which wallet is usable with ganache test-rpc?
I tried metamask, but unable to send ether between accounts because metamask is trying to estimate gas and gets stuck :(
myetherwallet doesn't save my seed so I need to enter it all the time
0
votes
1answer
375 views
Cannot read property 'deployed' of undefined issue
I am trying to launch an Election-Dapp.
I have these dependencies installed:
- Nodejs v9.11.1
- npm v5.8.0
- Truffle v4.1.3
- web3js v0.2
- ganache-cli
Below is my solidity contract
pragma ...
0
votes
0answers
45 views
Watching an event infinite getFilterChanges loop
Here is my code for App.js:
Contract.deployed().then((instance) => {
var event = instance.hasVoted();
var _this = this;
let wachtEvent = event.watch(function(...
0
votes
0answers
34 views
Connection error while trying to connect to rpc provider from a docker container
I am running testrpc on my localhost and I am trying to connect to it from a docker container. I am getting Connection error, when my python program tries to contact the rpc provider. Port 8545 is ...
0
votes
1answer
159 views
VM Exception while processing transaction: invalid opcode
I am trying to save string into a contract and hit this error.
My contract is
pragma solidity ^0.4.18;
contract MyRecord {
address owner;
address guest;
string note;
modifier ...
1
vote
0answers
70 views
How to downgrade geth version?
I'm having this error, which I doubt is because of the newer version of geth & the project being more than a year old.
I'm unable to downgrde geth anything below 1.5.9, I'm using a mac.
Also, I'...
0
votes
1answer
119 views
Is there any API available to get transaction history from rinkeby test network?
I want to show this transaction history on my website? Is there any API available for this?
Contract URL: https://rinkeby.etherscan.io/address/0x104a1fc33d88a3ee8beaf3a61309758174e82b93
-1
votes
1answer
48 views
Problem with web3?
When I try to get the list of accounts by using command line in web3 console, it doesn't work. Let me show you the result in my machine. Please help me!
