blockFlowable I didn’t understand why a function that was suppose to be a push was polling. But debugging the function I understand it better now, the polling is just to check if there is any change in the filter
web3j.privGetPirvateTransactionReceipt(myContract.myMethod().send().getTransactionHash()).send().getPrivateTransactionReceipt().getEvents() <--- should be something like this
Hi all,
I use web3j version 4.5.0 and get following error after transaction (in this case contract deployment):org.web3j.protocol.exceptions.TransactionException: Transaction has failed with status: 0x0. Gas used: ... . (not-enough gas?))
I use parity version: v2.5.0 and configured following params;
"eip140Transition": "0x0",
"eip211Transition": "0x0",
"eip214Transition": "0x0",
"eip658Transition": "0x0"May be the problem is related to that since the return code matches 0x0.
Strang thing: If using remix and connect to the same node with MetaMask the deployment works.
Gas setting is much more than necessary
Any ideas?
https://medium.com/metamask/https-medium-com-metamask-breaking-change-injecting-web3-7722797916a8
window.ethereum.enable() which will return a promise. The result of the promise resolve function will be the Account Address
Hello
i use Metamask provider like this on Angular
await window['ethereum'].send('eth_sendTransaction', params)
.then(function (result) {
// The result varies by method, per the JSON RPC API.
// For example, this method will return a transaction hash on success.
console.log('err, result ', result)
})
.catch(function (error) {
// Like a typical promise, returns an error on rejection.
})
but i have these errors
Error: Uncaught (in promise): TypeError: Cannot read property 'then' of undefined
RPC Error: The method undefined does not exist/is not available
codegen module in the web3j project, and rebuilt the module. I would like to get web3j solidity generate command to generate code using my modification. I can see in ~/.web3j/web3j-4.5.6/bin/web3j that the web3j cli is finding ~/.web3j/web3j-4.5.6/lib/codegen-4.5.6.jar on the classpath, so I think the simplest shortcut would be to build this codegen module JAR from my local modified web3j project, and place it on the classpath (or replace ~/.web3j/web3j-4.5.6/lib/codegen-4.5.6.jar) At which point does this JAR get built please? I am building the web3j project in IntelliJ successfully, but cannot locate the JAR. Thanks!
"event myEvent(address indexed userAddress, string indexed userId);"
I indexed the parameters so I can filter the events afterwards.
Then I created the .java file of the contract with "web3j solidity generate ..."
The strange thing now is, that since I indexed the parameters the event returns the userId not as normal string anymore, but as wired chars. In my .java file which I generated from solidity code it seems like it casts it to a byte array:
"typedResponse.userId = (byte[]) eventValues.getIndexedValues().get(1).getValue();"
Why? And how do I get the correct string again?
Thanks for your help! I searched already some time, but was not able to find an answer...
@ppeinsold I have not tried to reproduce your issue with web3j, but I don’t think your issue is web3j-related. From the Solidity docs:
If you use arrays (including string and bytes) as indexed arguments, its Keccak-256 hash is stored as a topic instead, this is because a topic can only hold a single word (32 bytes).
So I don’t think it’s possible to recuperate the string if it is indexed. And that would also explain why it’s being mapped to byte[]. I would say, if you need it indexed, and you also need to recuperate the string value, include the string in the event twice: once as an indexed parameter so that you can search/filter events by its value (by the hash of its value really), and the other unindexed to be able to read it back.
Hi I tried to call the contract method and it took about 15 seconds to get the transaction receipt even I set the pollingInterval to 2 seconds. Can anyone help me on this?
I find the solution now, I need a custom transaction manager with shorter sleep time. final TransactionManager txManager = new RawTransactionManager(this.web3j,
this.credentials, -1L, 10, 1000L);
Hi,
signing a raw transaction using web3j org.web3j:core:4.2.0-android and submitting it using web3.js version: 1.2.4 inside an API. It works sometimes very well but fails even using the same signing method.
Also, everything is working fine with web3.js signing and submission.
Please let me know if I am missing anything.