call

Executes a new message call immediately without creating a transaction on the block chain.

Parameters

Object

The transaction object

from: DATA, 20 Bytes

(optional) The address the transaction is send from.

to: DATA, 20 Bytes

The address the transaction is directed to.

gas: QUANTITY

(optional) Integer of the gas provided for the transaction execution. jumbo_call consumes zero gas, but this parameter may be needed by some executions.

QUANTITY | TAG

integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

Returns

DATA

the return value of executed contract.

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_call\",\n\t\"params\":[{\n\t\t\"from\": \"\",\n\t\t\"to\": \"\",\n\t\t\"gas\": \"\",\n\t\t\"gasPrice\": \"\",\n\t\t\"value\": \"\",\n\t\t\"data\": \"\"\n\t}, \"latest\"],\n\t\"id\":1\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_call",
	"params":[{
		"from": "",
		"to": "",
		"gas": "",
		"gasPrice": "",
		"value": "",
		"data": ""
	}, "latest"],
	"id":1
}'

HTTP

POST / HTTP/1.1
Host: testnode.jumbochain.org
Content-Type: application/json
Content-Length: 166

{
	"jsonrpc":"2.0",
	"method":"jumbo_call",
	"params":[{
		"from": "",
		"to": "",
		"gas": "",
		"gasPrice": "",
		"value": "",
		"data": ""
	}, "latest"],
	"id":1
}

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_call\",\n\t\"params\":[{\n\t\t\"from\": \"\",\n\t\t\"to\": \"\",\n\t\t\"gas\": \"\",\n\t\t\"gasPrice\": \"\",\n\t\t\"value\": \"\",\n\t\t\"data\": \"\"\n\t}, \"latest\"],\n\t\"id\":1\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_call",
  params: [
    {
      from: "",
      to: "",
      gas: "",
      gasPrice: "",
      value: "",
      data: "",
    },
    "latest",
  ],
  id: 1,
});

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_call",
  "params": [
    {
      "from": "",
      "to": "",
      "gas": "",
      "gasPrice": "",
      "value": "",
      "data": ""
    },
    "latest"
  ],
  "id": 1
})
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_call",
  params: [
    {
      from: "",
      to: "",
      gas: "",
      gasPrice: "",
      value: "",
      data: "",
    },
    "latest",
  ],
  id: 1,
});

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_call",
	"params":[{
		"from": "",
		"to": "",
		"gas": "",
		"gasPrice": "",
		"value": "",
		"data": ""
	}, "latest"],
	"id":1
}`)

  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))
}