2. Withdraw Funds

Description

Make a withdrawal from an account.

TBD: Narratives

User Interface

Function Description

Item	Description
Contract Address	Trading contract (referenced by Smart Contract Overview section)
Contract Name	SLDDAIContract.sol
Function	function withdraw(uint256 amount)
Function Selector	0x2e1a7d4d
Invocation Type	Ethereum Transaction
Passing Parameters	Amount of DAIs withdrawn; actual number multiplied by 1E18
Return Value	None
Event Emitted	event DDSWithdraw(address indexed sender, address indexed toAddr, uint256 motageAmount);
Event Signature	0x9319767067544c146c859088bc69f38236cad434eb28957e8574a56d4173f89f
Transaction Sample(BSC testnet)	https://testnet.bscscan.com/tx/0xb7d745f1d696281444530c798a408ad52cf221c6993bb16997f3b7f465e7c2d5#eventlog

ABI Description

[{
	"inputs": [{
		"internalType": "uint256",
		"name": "amount",
		"type": "uint256"
	}],
	"name": "withdraw",
	"outputs": [],
	"stateMutability": "nonpayable",
	"type": "function"
}]

Examples

Calling Examples

JavaScript

// This example is written by using Web3.js
// More details on Web3.js could be found here - https://web3js.readthedocs.io/

var Web3 = require('web3');
const BigNumber = require('bignumber.js');

// BSC Mainnet: https://bsc-dataseed.binance.org
// BSC Testnet: https://data-seed-prebsc-1-s1.binance.org:8545
const  web3 = new Web3("https://data-seed-prebsc-1-s1.binance.org:8545");

// Need trading contract address
const CONTRACT_ADDRESS = "";
const ABI = [{
	"inputs": [{
		"internalType": "uint256",
		"name": "amount",
		"type": "uint256"
	}],
	"name": "withdraw",
	"outputs": [],
	"stateMutability": "nonpayable",
	"type": "function"
}];

// Withdraw 1 DAI.
const DEPOSIT_AMOUNT = 1e18;

var contract = new web3.eth.Contract(ABI, CONTRACT_ADDRESS);

contract.methods.withdraw(new BigNumber(DEPOSIT_AMOUNT).toString()).send({
    from: "CALLER_ADDRESS",
}, function(error, result){
    if(!error) {
      console.log('Response:', result);
    } else {
      console.log(error);
    }
});

Python

# This example is written by using Web3.py
# More details on Web3.py could be found here - https://web3py.readthedocs.io/

HTTP Request Example

Send a Withdrawal Transaction

POST (BSC Mainnet) https://bsc-dataseed.binance.org/

Make a withdraw transaction to Shield Protocol V1 BSC network. More details on how to send a transaction via BSC RPC could be found here, https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sendrawtransaction

Request Body

Name	Type	Description
jsonrpc	string	"2.0"
method	string	"eth_sendRawTransaction"
params	array	the signed transaction data coerced into string array
id	number	request sequence id, you could use timestamp as id

200

{
  "id":64,
  "jsonrpc": "2.0",
  "result": "0xb7d745f1d696281444530c798a408ad52cf221c6993bb16997f3b7f465e7c2d5"
}