如何使用 web3 开发工具包"unwrap SOL"？

Question

我需要使用web3 sdk打开一些SOL。我想知道，从包装账户到SOL账户只是简单的转账，还是比这更复杂?下面是我设置的一些示例代码。

const emptyWSolAccount = async (amount:any) => {
const wsolAddress = await Token.getAssociatedTokenAddress(
ASSOCIATED_TOKEN_PROGRAM_ID,
TOKEN_PROGRAM_ID,
new PublicKey("So11111111111111111111111111111111111111112"),
wallet.publicKey
);
const wsolAccount = await connection.getAccountInfo(wsolAddress);
if (wsolAccount) {
const transaction = new Transaction({
feePayer: wallet.publicKey,
});
const instructions = [];
const lamports = amount * LAMPORTS_PER_SOL;

instructions.push(
SystemProgram.transfer({
fromPubkey: wsolAddress,
toPubkey: wallet.publicKey,
lamports: lamports, // 1 sol
})
);
transaction.add(...instructions);
transaction.recentBlockhash = await (
await connection.getRecentBlockhash()
).blockhash;
transaction.partialSign(wallet.payer);
const result = await connection.sendTransaction(transaction, [
wallet.payer,
]);
console.log({ result });
return { result };
}
return ;
};

Answer 1

这在任何地方都没有真正解释，但是unwrapped SOL实际上意味着关闭已包装的SOL帐户。

所以不用SystemProgram.transfer指令，你可以这样做:

instructions.push(
splToken.instructions.createCloseAccountInstruction(
wsolAddress,
wallet.publicKey,
wallet.publicKey,
)
);

关闭wsolAddress并将内容发送给wallet，假设wallet是所有者。

您可以在https://github.com/solana-labs/solana-program-library/blob/3db53e278b543a040d3c970797b6be6f9ea5aef9/token/cli/src/main.rs#L1139-L1194

查看CLI实现