newFilter

Creates a filter object, based on filter options, to notify when the state changes (logs). To check if the state has changed, call jumbo_getFilterChanges.

A note on specifying topic filters:

Topics are order-dependent. A transaction with a log with topics [A, B] will be matched by the following topic filters:

[] "anything"

[A]"A in first position (and anything after)"

[null, B]"anything in first position AND B in second position (and anything after)"

[A, B] "A in first position AND B in second position (and anything after)"

[[A, B], [A, B]] "(A OR B) in first position AND (A OR B) in second position (and anything after)"

Parameters

Object

The filter options:

fromBlock: QUANTITY|TAG

(optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

toBlock: QUANTITY|TAG

(optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

address: DATA|Array, 20 Bytes

(optional) Contract address or a list of addresses from which logs should originate.

topics: Array of DATA

(optional) Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with "or" options.

params: [{
  "fromBlock": "0x1",
  "toBlock": "0x2",
  "address": " 0x8888f1f195afa192cfee860698584c030f4c9db1",
  "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc"]]
}]

Returns

QUANTITY

A filter id

Requests

C#

var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, "https://testnode.jumbochain.org");
var content = new StringContent("{\n\t\"jsonrpc\":\"2.0\",\n\t\"method\":\"jumbo_newFilter\",\n\t\"params\":[\n\t\t{\n\t\t\t\"topics\":[\"0x12341234\"]\n\t\t}\n\t],\n\t\"id\":73\n}", null, "application/json");
request.Content = content;
var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
Console.WriteLine(await response.Content.ReadAsStringAsync());

cURL

curl --location 'https://testnode.jumbochain.org' \
--header 'Content-Type: application/json' \
--data '{
	"jsonrpc":"2.0",
	"method":"jumbo_newFilter",
	"params":[
		{
			"topics":["0x12341234"]
		}
	],
	"id":73
}'

HTTP

POST / HTTP/1.1
Host: testnode.jumbochain.org
Content-Type: application/json
Content-Length: 110

{
	"jsonrpc":"2.0",
	"method":"jumbo_newFilter",
	"params":[
		{
			"topics":["0x12341234"]
		}
	],
	"id":73
}

Java

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\n\t\"jsonrpc\":\"2.0\",\n\t\"method\":\"jumbo_newFilter\",\n\t\"params\":[\n\t\t{\n\t\t\t\"topics\":[\"0x12341234\"]\n\t\t}\n\t],\n\t\"id\":73\n}");
Request request = new Request.Builder()
  .url("https://testnode.jumbochain.org")
  .method("POST", body)
  .addHeader("Content-Type", "application/json")
  .build();
Response response = client.newCall(request).execute();

NodeJs

const axios = require("axios");
let data = JSON.stringify({
  jsonrpc: "2.0",
  method: "jumbo_newFilter",
  params: [
    {
      topics: ["0x12341234"],
    },
  ],
  id: 73,
});

let config = {
  method: "post",
  maxBodyLength: Infinity,
  url: "https://testnode.jumbochain.org",
  headers: {
    "Content-Type": "application/json",
  },
  data: data,
};

axios
  .request(config)
  .then((response) => {
    console.log(JSON.stringify(response.data));
  })
  .catch((error) => {
    console.log(error);
  });

Python

import requests
import json

url = "https://testnode.jumbochain.org"

payload = json.dumps({
  "jsonrpc": "2.0",
  "method": "jumbo_newFilter",
  "params": [
    {
      "topics": [
        "0x12341234"
      ]
    }
  ],
  "id": 73
})
headers = {
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

Javascript

const myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");

const raw = JSON.stringify({
  jsonrpc: "2.0",
  method: "jumbo_newFilter",
  params: [
    {
      topics: ["0x12341234"],
    },
  ],
  id: 73,
});

const requestOptions = {
  method: "POST",
  headers: myHeaders,
  body: raw,
  redirect: "follow",
};

fetch("https://testnode.jumbochain.org", requestOptions)
  .then((response) => response.text())
  .then((result) => console.log(result))
  .catch((error) => console.error(error));

Go

package main

import (
  "fmt"
  "strings"
  "net/http"
  "io/ioutil"
)

func main() {

  url := "https://testnode.jumbochain.org"
  method := "POST"

  payload := strings.NewReader(`{
	"jsonrpc":"2.0",
	"method":"jumbo_newFilter",
	"params":[
		{
			"topics":["0x12341234"]
		}
	],
	"id":73
}`)

  client := &http.Client {
  }
  req, err := http.NewRequest(method, url, payload)

  if err != nil {
    fmt.Println(err)
    return
  }
  req.Header.Add("Content-Type", "application/json")

  res, err := client.Do(req)
  if err != nil {
    fmt.Println(err)
    return
  }
  defer res.Body.Close()

  body, err := ioutil.ReadAll(res.Body)
  if err != nil {
    fmt.Println(err)
    return
  }
  fmt.Println(string(body))
}