Questions tagged [filters]

filter for the logs fired by contract's events

18 questions with no upvoted or accepted answers
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Web3 Event Filtering timeout

This is the code I use to get all events from a certain contract. Solidity: event NewEvent(address indexed contractAddress, address newBOPAddress, address payer, uint commitThreshold, bool ...
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0answers
1k views

web3 filter option not working

var filter = web3.eth.filter({fromBlock: 350000, toBlock: 'latest',address:"0x075da4ebae466b80d451b0627296d5d38b3e99c1"}); var myResults1 = filter.watch(function (error, log) { console.log(error);...
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0answers
34 views

Accessing the network through light node

I've been trying, unsuccessfully, to make a web3.py app that needs to catch events, with the use of filters. After hours and hours of testing it appeared the problem was that Infura, which is the ...
1
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1answer
39 views

Filter topic across multiple contracts

Is there something I could add to my contract which allows my application to filter for all the deployed contracts which also included this topic/identifier? The only other option to manage this I ...
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0answers
140 views

How to fix TypeError: 'xxx' is not a function

I have a project is to listen event of one deployed contract. Now I' m using BNB for testing. Here is my code: var Web3 = require("web3"); var fs = require("fs"); web3 = new Web3(new Web3.providers....
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0answers
115 views

Filtering blocks on basis of transaction logs in web3j

I want to filter blocks on the basis of a log present inside transactions. How can I do that? I don't have any contract address and want to filter all the blocks generated by all the contracts. ...
1
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0answers
504 views

Web3.js filtering on allEvents

I'm struggling to figure out how to add a filter to allEvents requests. My current code: const contract = getState().web3Reducer.get('contract'); contract.getPastEvents('allEvents', { ...
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0answers
104 views

Why do null topics affect the output of filter logs in geth?

I'm connected to a private chain with geth and this is the output I get when trying to retreive logs (first topic is function signature): > eth.filter({'fromBlock': 0, 'toBlock': 'latest', address:...
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1answer
30 views

Unable to filter events with specific values of indexed parameters

I am currently trying to test a smart contract using the truffle suit ( with 'truffle test'). My contract is of a simple ERC20 token which includes the standard Transfer event: event Transfer(address ...
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0answers
40 views

How does function getPastEvents works? It's too quick

I'm trying to understand how .getPastEvents function works. When given block range to search is {fromBlock:0, toBlock: 'latest'} it finds my events almost instantaneously. Shouldn't filtering all 7M ...
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0answers
5 views

Nethreum CreateFilterInput Block Number boundary issue

I obtained the latest block number by using: var Latest = web3.Eth.Blocks.GetBlockNumber.SendRequestAsync().Result; Assume Latest = 400000 I create a filter even from block number 390000 to (the ...
0
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1answer
214 views

Filters object not working for web3.eth.contract getPastEvents() method

I have referred, Web3 Events, but filters object is not working for me, I've got the same result for events before and after applying filter object. Here's the code: instance.getPastEvents( "...
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0answers
30 views

How to filter by string parameter , web3 2.0.0-alpha.1 Solidity events?

I'm trying to filter some events , and I noticed since I updated the web3 to version 2.0.0-alpha 1 the event catch is a little bit different. I have a Smart Contract with this event : event ...
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101 views

“Method not found” when trying to parity_subscribe to eth_getFilterChanges

Parity Ethereum version: 2.5.1-beta, tested on 2.4.6 as well Operating system: Linux (Ubuntu) Installation: binary Fully synchronized: yes Network: ethereum Restarted: yes I'm using a websocket. I ...
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0answers
47 views

Catching FilterException web3j

I'm using web3j to subscribe for transactions: Flowable<Transaction> observable = web3.replayPastAndFutureTransactionsFlowable(startBlockParameter); Scheduler ...
0
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1answer
146 views

Query Ethereum Blockchain for functions return value of a Specified Smart Contract

I want to get smart contract functions return value sent by a specified smart contract within a range of blocks. I found a [manual] working method to achieve this: async function getTxsByAccount(...
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47 views

What does that Filter By means? in ropsten etherscan while deploying tokens on ropsten

I've deployed my token contract on ropsten etherscan. Sometimes it shows me some address besides Filter By what doed that filter by exactly means?
0
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2answers
222 views

filter: logs.blockNumber = undefined

I have the following code: var filter = web3.eth.filter({ fromBlock:4076955, toBlock:"latest", address:"0x0123456789012345678901234567890123456789" }); filter.get(function(error,logs){ ...