Ethereum

Questions tagged [websocket]

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23 views

What is the websocket URL in Ethereum on Geth?

I've lunched an Ethereum server based on Geth. Now, I need to be notified about all incoming transactions on my generated accounts. In my previous Bitcoin Core server, I had an option in its config ...
2
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0answers
24 views

Azure Blockchain Service node properties [closed]

What exactly are Access key 1, Access key 2, Member account, Web socket, DNS, creater account, etc. of a node in Azure Blockchain Service? I am getting confused as to what are these. Also what are the ...
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0answers
31 views

Timeout when try to connect over websocket in web3.py

I am trying to listen for events emitted by a simple Solidity contract. I am not able to connect using ws though I can commit transactions using http. Here's my code for event listening - import ...
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0answers
21 views

How to use Truffle HDWallet Provider with WebSocketProvider

Truffle HDWallet Provider works well with HttpProvider, but doesn't work with WebSocketProvider.
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0answers
26 views

Connection not open on send when subscribing to new block headers

I am running a local ethereum node with the below configuration geth --syncmode "full" --datadir "." --ethash.dagdir "." --cache=4096 --rpc --rpcaddr test.example.com --rpcapi="web3,miner,admin,...
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0answers
50 views

Why does Infura Ropsten websocket filtering event timeout?

When listening events via Infura Ropsten websocket, web3.py implementation timeout while web3.js succeeds. The demo can be cloned from -- https://github.com/jerryji/ropsten_wss_timeout_demo After ...
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1answer
56 views

Erc-20 Token Send Transaction

I want some Information about Erc-20 Transactions. I want to transfer Erc-20Token from first wallet to a second wallet, I have Privet Key, But I want to transfer with Api, So How can I transfer the ...
1
vote
1answer
56 views

Generate new address, Send and Get transaction then Check transaction

I'm just starting in the ethereum and trying to build an app using Web3 and Nodejs. I'll need your lights so I can get any idea to know how to resolve those points: I have my own public address and ...
0
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1answer
76 views

geth subscribe newHeads not working

I run geth with this command geth --syncmode "fast" --cache 2048 --datadir /data/ethereum --ws --wsaddr 0.0.0.0 --wsorigins '*' --wsapi 'web3,eth,net,db,personal' --rpc --rpcaddr 0.0.0.0 then i ...
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0answers
85 views

Events using Infura websockets on rinkeby Web3 1.2.1. Returned values aren't valid, did it run Out of Gas?

I am trying to do a simple event listener with NodeJS and Web3 using an Infura endpoint. I have the correct project-id const Web3 = require('web3'); let web3 = new Web3( // Replace YOUR-PROJECT-ID ...
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0answers
12 views

Terminate WebsocketProvider

I have web-socket running properly as expected. Unfortunately, the termination of the websocket does not happen. The program I used is import Web3 from 'web3'; const eventProvider = new ...
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0answers
55 views

How to manually close a websocket connection to ganache-cli

I am trying to reproduce a bug which happens after my websocket connection restarts. To pinpoint the problem I am trying to manually close (and then restart) the ws connection to my ganache-cli node. ...
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2answers
102 views

TimeoutError when using Infura websocket with web3.py

When I run the following code sometimes it executes successfully, but most of the time it raises a concurrent.futures._base.TimeoutError. What can I do to fix this? Here is the code: infura_url_ws = ...
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1answer
203 views

How to connect with WebSocket with Web3?

Already referred web3 documentations and other Q-A for web socket connection. Currently using infura as provider.
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1answer
30 views

Subscribe to events using local geth in light mode?

I've followed this guide to subscribe to events. I succesfully subscribed to the new block headers using Infura provider. But when I try to use local geth node syncing in light mode, it connects, but ...
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0answers
325 views

Problem connecting web3 via websocket to node with nginx

we are trying to connect to a geth node via WebSockets to be able to subscribe to contract events. This node is created with docker and this docker uses nginx as a proxy. We can connect easily with ...
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0answers
68 views

How to get list of pending transactions for particular address on JavaScript using public API?

I'm building web-wallet on javascript, and I want to show not only available balance, but also pending amount. From web3js v1.xx documentation I've learned that I can do web3.eth.subscribe('...
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0answers
41 views

Infura websocket API timing out on connect

Has anyone ever had issues with the Infura Websocket API suddenly ceasing to respond. I have been using it to subscribe to event logs, but now the connection to the API is timing out.
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0answers
131 views

Ocasional connection refused initializing web3

I have an ethereum web application using web3js 1.0.0-beta.34 on a private network. Most of the times everything works fine. Sometimes the connection to the node through a websocket provider fails ...
0
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1answer
277 views

Infura Web Sockets doesn't work on Infura

I have a problem with connecting via Websockets to Infura. I am listening on some events from my smart contract, so when some event is dispatched by calling some method from smart contract, I should ...
1
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1answer
383 views

Error on WebSocket connection to Infura Ropsten (broken close frame)

I am trying to connect to Ropsten with Web3js (1.0) via Infura using their WebSocket provider but I am getting the following error: WebSocket connection to 'wss://ropsten.infura.io/ws' failed: ...
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1answer
158 views

geth event newPendingTransactions does not occur

I've got running geth with next command: $ geth --testnet --networkid 3 --verbosity 3 --syncmode light --ipcdisable --ws --wsapi "db,eth,net,web3,personal,txpool,admin,miner" --wsorigins '*' In ...
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1answer
251 views

How to apply EthFilter to specific address?

In web3.js, we can apply event filter something like below: this.event = this.Contract.events.MyEvent({ filter: { address: "0xAccountAddress" }, }) In Web3J, it is translated to EthFilter ...
1
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1answer
328 views

Having issue with Infura mainnet web3 connection and getting info

I have been looking at a tutorial from DappUniversity about Web3... on the introductory video, I have completed all stages fine, but when getting to retriving account balance information from the ...
2
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0answers
361 views

ping / pong pattern for infura websocket [closed]

Infura websockets disconnect after an hour of in-activity so they suggest you ping / pong the connection at an interval less then an hour. My problem is I'm new to server-side programming and don't ...
3
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0answers
464 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? If I use ...
1
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0answers
168 views

Cannot Connect to Geth Web Socket from Other PC on LAN

I have a geth node running on one PC, IP 192.168.0.105 and on my main dev machine IP 192.168.0.102, I'm trying to connect to it via web sockets but keep getting connection not open. Both are on the ...
2
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1answer
225 views

Connecting to blockchain on azure using web3.js and websocket

right now, I am trying to write a service using web3 which will 'subscribe' to all 'perndingtransactions' on blockchain to perform further actions. web3 documentation says that 'Httpprovider' cant be ...
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2answers
2k views

TypeError: Cannot set property 'method' of undefined when using WebsocketProvider

I'm using: web3 v0.20.6 web3-providers-ws v1.0.0-beta.34 First question - can web3-providers-ws be used with web3 v0.20.*? Second question (problem) - I get an error when probably trying to send ...
2
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3answers
5k views

web3 Websocket connection to infura

I receive this error when I'm trying to connect to the websocket WebSocket connection to 'wss://ropsten.infura.io/ws' failed: Error during WebSocket handshake: Sent non-empty 'Sec-WebSocket-Protocol'...
0
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1answer
670 views

“Connection not open” error when subscribing to address with websocket

I'm trying to subscribe to transactions sent to or from a particular ethereum address. I also want to test this in a local private network, which is why I'm not using etherscan or something like that. ...
0
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1answer
144 views

Get a large amount of blocks with web3 (nodejs)

I'm writing a nodejs program that gets a large amount of blocks (>100,000) and looks at each transaction inside to filter / analyse the data. I'm currently using web3 (v1) getBlock function: eth....
0
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0answers
145 views

Unable to catch contract event using parity websockets

I have a contract deployed on ropsten which emits event when ether amount is deposited in it. I can see the event appearing in etherscan. this.web3Socket = new Web3(new Web3.providers....
9
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1answer
1k views

web3 websocket connection prevents node process from exiting

I have a node js process that creates a web3 websocket connection, like so: web3 = new Web3('ws://localhost:7545') When the process completes, it does not exit, but rather hangs forever with no ...
2
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6answers
2k views

Is there any websocket ethereum provider?

Is there any websocket ethereum provider? Except etherscan one. Maybe there are paid wss subscriptions?
2
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1answer
337 views

Healtcheck on Websocket

I've looked through the documentation and haven't found that to be helpful. I would like to know the best way to do a healthcheck on my websocket connection to geth (Yesterday, I found out that I did ...
0
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1answer
228 views

Unable to connect to geth

I'm totally new to Ethereum, and want to create some deposit address monitoring system using web socket. Which gets newly generated blocks and scan it for transactions made into it. You can find code ...
2
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1answer
160 views

Is there a max number of websocket connections that geth can support?

I realize that it depends on my machine, RAM, etc, but is there a general guide of how many WS connections geth can support?
1
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1answer
90 views

API or websocket

I am trying to develop an crypto traking site like coinmarketcap, for market data I am using exchanges API. but I am little bit confuse whether i should use api or websocket? as i don't have much ...
1
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1answer
712 views

How to connect to Infura Testnet by using WebsocketProvider?

I want to connect to rinkeby.infura testnet by using WebsocketProvider but the page remains blocked to load. const Web3 = require('web3'); console.log(Web3.givenProvider); var web3 = new Web3( new ...
1
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1answer
197 views

Dapp fundamental q about listening solidity events

Sol: I created contract with events that are raised when is called some function. Html fo: Those functions are called via web3.js with abi and address - easy. Backend (no js) asp or php: I am not ...
2
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1answer
911 views

Subscribe to events usign geth websocket

I'm trying to subscribe to geth using the websocket api. First step was to start geth: geth --ws --wsport=8456 --wsorigins="*" --fast --cache=512 --rpcport=8455 --rpc --rpcapi="personal,eth,network" ...
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2answers
694 views

How to expose the underlying web socket connection from the WebSocketProvider?

Using web3.js version 1(beta) and using the WebsocketProvider to make a connection via const Web3 = require('web3') const web3 = new Web3('ws://localhost:8546') const provider = web3.providers....
3
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2answers
4k views

connecting geth to web3.js 1.0 via websockets or HTTP

I am building a minimal nodeJS application that should connect via web3.js to my geth node. I am following the official web3.js1.0 documentation and I am using web3 1.0.0-beta.29. I do manage to ...
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2answers
2k views

TypeError: Web3.providers.WebsocketProvider is not a constructor?

Trying to connect to a geth machine over websocket? JS code. var Web3=require('web3'); var web3 = new Web3(new Web3.providers.WebsocketProvider('ws://10.244.5.43:8546')); console.log(web3....
5
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1answer
2k views

Subscription using websocket through Geth

I am trying to build a dapp which will monitor a particular address balance, and update in case someone send fund (ether) to it. Instead of polling using call getBalance, I want to take advantage of ...
2
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0answers
530 views

Geth connection rpc vs ws

where I can find same articles or materials to understand differences between rpc and ws connection over geth. From my point of view rpc is part of a websocket connection, so why I have to use ws ...
2
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0answers
269 views

Sockets/4 - Connection failed, retrying after 1000ms

After running for a bit I always get this with the latest ethereumwallet --fast and latest ubuntu: [2017-07-01 17:00:30.037] [ERROR] ipcProviderBackend - Send request failed Error: Unable to connect ...
12
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2answers
9k views

Geth can't connected to via Websocket

I am trying to connect to Geth via Websockets but unfortunately i am given 403 error. I am using the --ws --wsport XXXX args. Everything is done in a local instance, so that would be surprising if ...