Ethereum: ERC721 safeTransferFrom reverts with no message
The bed provides an article that exploits the security of the ANC721 when returning within months.
To support the secure transmission function of ANC721
The Safetransferfrom feature is the critical part of the ATC721 standard, White, allows the NFTS bank accounts to be safely and transparent. He is a high level of overview of this feature:
- This taxes the NFT (recipient) account and a report that wants it to re -make it (Bayer).
- If both conditions, T will pass NFT from the buyer’s address page.
- Transmission drawing by preventing data by transferring data.
Question: Restore the message
What is called Astransferfrom Wittout errors is Ethereum’s smart contract running time with an error message. However, if the coast cannot make a mistake and still returns, this is something interrupted within the contract.
Many possible reassessions, Hyshetransfer unexpectedly for a drink:
Invalid recipient of the title : If the recipient has to pay the NDA on the ether (THH), the contract will return. This can make steels to transfer a zero balance bill to the NFT Fracer.
Ins of the storage site : The sender’s account does not comply with the storage site to accommodate NDP data. This canse the contract in a low storage enforcement environment, the sender should not be sufficient.
* Inserts “the make a slot” from “and the steedresses are correct.
implies the use case and the debugging steps
In order to better understand the lunch of the code, it creates a simple test to repeat the problem to reproduce the question:
charity
Import * to et fram ‘@Ethersproject/Ethers’;
Contract Selveerc721Transfer {
// Install the ERC721 contract on the Eetheum network.
;
// Asuse leaves the ERC721 contract.
Title nest = 0x123456890123456890123456889012356898901235688980;
Nowaccount returned;
}
Financing istransferfrom (addrens, address recipient) public {
requires (sender! = null and recipient! = null, “The sender and recipient must be resolved.”);
You need (eethstorage_size (Newadsress)> = 110 * 18, “not sufficient storage space”);
/ The assumption is to leave the ETH balance for the contract.
You need (mg.value> = newadress.bolanceof (Newaccount), “no half ether”);
// Diploy’s contract with NFT using ABI and address.
}
Functional mintft () public {
// Shortly deceiving the NFT must be safe!
}
}
“ s
In the th exam, “TEPPLOY” returns a non -OP (only the title of the installed contract). You can add it to the implementation of mining and the transfer of NFTs.
To debut all questions:
* Check the contract storage area: Make sure you pay for the sensitive ETH to transfer your data.
Check your recipient’s address : Check that this is this and how you agree on Mertic’s contracts.
Examine the message
: Check out the return month to understand the reason for the question exam.
*Conclusion
The structure of the NFT market can be a challenge, but it is essential for identity to arise the CEN issue. The secure transfer of the ESAC721 and understanding of debugging technicians is better equipped with Trumps to Trunks in the SART development process.