skynetcap / solanaj Goto Github PK

https://docs.solana.com/developing/clients/jsonrpc-api#gethighestsnapshotslot

// deserialize the transaction
const swapTransactionBuf = Buffer.from(swapTransaction, 'base64');
var transaction = VersionedTransaction.deserialize(swapTransactionBuf);
console.log(transaction);

// sign the transaction
transaction.sign([wallet.payer]);

// Execute the transaction
const rawTransaction = transaction.serialize()
const txid = await connection.sendRawTransaction(rawTransaction, {
skipPreflight: true,
maxRetries: 2
});
await connection.confirmTransaction(txid);
console.log(https://solscan.io/tx/${txid});

https://station.jup.ag/docs/apis/swap-api

How to achieve it?

https://docs.solana.com/developing/clients/jsonrpc-api#getlatestblockhash

Using the Java version of Solanaj, the public key addresses generated by importing private keys exported from Phantom Wallet and Okx Web3 Wallet are the same, while the public key addresses generated by importing mnemonics exported from Phantom Wallet and Okx Web3 Wallet are different? May I ask what the problem is? How should we solve it?

var transaction = VersionedTransaction.deserialize(swapTransactionBuf);
How to implement it in Java?

I'm trying to use this library for experimenting, but I cannot get it to work with maven given that there are not packages published. 😅

Is there a plan to publish the builds? 🤔

• Allow writing of arbitrary data to an account.

public ConfirmedTransaction getTransaction(String signature, Commitment commitment) throws RpcException {
List params = new ArrayList<>();
params.add(signature);
Map<String, Object> parameterMap = new HashMap<>();

    if (commitment != null) {
        parameterMap.put("commitment", commitment); //update  parameterMap.put("commitment", commitment.getValue());
    }

    parameterMap.put("maxSupportedTransactionVersion", 0);
    params.add(parameterMap);
    return client.call("getTransaction", params, ConfirmedTransaction.class);
}

how do use proxy in RpcClient？

org.p2p.solanaj.programs.AssociatedTokenProgram

keys.add(new AccountMeta(walletAddress, false, false));

Is there any implementation of the createAssociatedTokenAccountInstruction method? I can’t seem to find it under TokenProgram

Help! To create a token address and call the 'SystemProgram.createAccount' method, what is the meaning of the parameters?
help! 创建token地址调用 'SystemProgram.createAccount' 方法, 参数的意义是什么?

public static TransactionInstruction createAccount(PublicKey fromPublicKey, PublicKey newAccountPublikkey,
long lamports, long space, PublicKey programId)

Requirements:

Architecture:

• Replace Exception-based code with Optionals, remove try-catch from normal code flow.
• Evaluate different Websocket libraries
• Support for importing/signing/sending raw transactions (Base64/bytes)
• Support for durable nonces
• Mechanism for auto-reconnect on Websockets + re-subscribe to dropped subscriptions
• SOCKS proxy support

APIs:

• Coverage of the newer APIs
• Support ALTs (Address Lookup Tables)

GetProgramAccounts:

• Support pagination using dataSize = 0

org.p2p.solanaj.rpc.RpcException: Transaction version (0) is not supported by the requesting client. Please try the request again with the following configuration parameter: "maxSupportedTransactionVersion": 0
at org.p2p.solanaj.rpc.RpcClient.call(RpcClient.java:88)
at org.p2p.solanaj.rpc.RpcApi.getBlock(RpcApi.java:522)

• https://rpc.ankr.com/solana is a free endpoint for builds. Find more like this and add them to the Cluster enum.

We currently use a poorly-coded library called Java-Websocket, instead of the highly battle tested OkHttp. OkHttp supports websockets. Use OkHttp, and remove the original dependency.

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.p2p.solanaj.rpc.types.RecentBlockhash$Value.getBlockhash()' on a null object reference
at org.p2p.solanaj.rpc.RpcApi.getRecentBlockhash(RpcApi.java:47)
at org.p2p.solanaj.rpc.RpcApi.getRecentBlockhash(RpcApi.java:37)
at org.p2p.solanaj.rpc.RpcApi.sendTransaction(RpcApi.java:62)
at org.p2p.solanaj.rpc.RpcApi.sendTransaction(RpcApi.java:56)

I want to build the instruction for swapping on DEX Orca.
I don't understand how to build data for SystemProgram.createTransactionInstruction.
If someone can help me with this, or has any useful link.
Thank you.

https://docs.solana.com/developing/clients/jsonrpc-api#minimumledgerslot

I am trying on Solana Testnet, and when I use getBlock() method I got Json parsing exception.

public enum RewardType {
    /*FEE, RENT, VOTING, STAKING*/
    Fee, Rent, Voting, Staking
}

exception occurs because of upper case and when I change like this it works.

Thanks in advance.

https://docs.solana.com/developing/clients/jsonrpc-api#isblockhashvalid

https://docs.solana.com/developing/clients/jsonrpc-api#getfeeformessage