Why send() and transfer() doesn't work?
I just learned solidity and I'm curious about the methods of sending ether.
I wrote two smart contract in solidity and deployed them with Remix IDE(Environment is Remix VM(Merge)). I tried to send 1 ether from Sender contract to Receiver contract in three different ways, send(), transfer(), call().
I was able to send ether trough call(), but I was unable to send ether with send() and transfer() function.
Here is the code.
pragma solidity ^0.8.0;
contract Receiver {
address receiver;
uint public prize;
address public owner;
constructor() payable {
receiver = msg.sender;
owner = msg.sender;
prize = 0.001 ether;
}
receive() external payable {
require(msg.value >= prize || msg.sender == owner);
payable(receiver).transfer(msg.value);
receiver = msg.sender;
prize = msg.value;
}
}
contract Sender {
constructor() payable{
}
function sendWithSend(address payable _to) public payable{
//send ether with send
//failed
bool success = _to.send(msg.value);
require(success, "failed");
}
function sendWithTransfer(address payable _to) public payable{
//send ether with transfer
//failed
_to.transfer(msg.value);
}
function sendWithCall(address payable _to) public payable{
//send ether with call
//success
(bool sent, ) = _to.call{value: msg.value}("");
require(sent, "Failled" );
}
}
Sender contract has three functions, "sendWithSend", "sendWithTransfer" and "sendWithCall".
I tried to sent 1 ether to Receiver contract with each function and I expected all worked so Receiver contract would have 3 ether. But it got only 1 ether.
call() worked but send() and transfer() failed.
I tried many times but send() and transfer() never works.
here is the error log
send() error
transfer() error
and here is call() method success log
I would really appreciate your help.
