Skip to main content

Solana Gun (Quic) RECOMMENDED

Written by Allnodes Team

QUIC Quick Start

Send Solana transactions with the Solana Gun Rust client, which handles connection setup and authentication.

Before you begin

  • Use your Solana Gun endpoint (get here). Replace the placeholders with your connection details.

  • Have a funded Solana wallet and its local keypair JSON file. The example sends 0.0021 SOL (2,100,000 lamports) to an existing wallet, plus the network fee.

  • Use a regular Solana RPC to fetch a recent block hash. The example uses https://solana-rpc.publicnode.com.

Your network must allow outbound UDP to the QUIC port.

Send a transaction

  1. Create a Rust project:

    cargo new solana-gun-quic-example 
    cd solana-gun-quic-example

  2. Replace its [dependencies] section in Cargo.toml with:

    [dependencies]
    anyhow = "1"
    solana-client = "=2.3.13"
    solana-sdk = "=2.3.1"
    tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
    bincode = "1"
    solana-gun-quic-client = { git = "https://github.com/allnodes/solana-gun-quic-client", tag = "v1.0.0" }

  3. Save the code as src/main.rs and replace the hostname, port, token, keypair path, and recipient address:

    use solana_client::nonblocking::rpc_client::RpcClient;
    use solana_gun_quic_client::{ClientConfig, SolanaGunQuicClient};
    use solana_sdk::{
        commitment_config::CommitmentConfig,
        pubkey::Pubkey,
        signature::{read_keypair_file, Signer},
        system_instruction,
        transaction::{Transaction, VersionedTransaction},
    };
    use std::time::Duration;
    const KEYPAIR_PATH: &str = "/path/to/keypair.json";
    const RPC_URL: &str = "https://solana-rpc.publicnode.com";
    const GUN_HOST_PORT: &str = "fra1.solanagun.com:7000";
    const GUN_TOKEN: &str = "<TOKEN>";
    const RECIPIENT_ADDRESS: &str = "<RECIPIENT_ADDRESS>";
    const AMOUNT_LAMPORTS: u64 = 1_000_000;
    #[tokio::main]
    async fn main() -> anyhow::Result<()> {
        let payer = read_keypair_file(KEYPAIR_PATH)
            .map_err(|error| anyhow::anyhow!(error.to_string()))?;
        let recipient: Pubkey = RECIPIENT_ADDRESS.parse()?;
        let rpc = RpcClient::new_with_timeout(
            RPC_URL.to_string(),
            Duration::from_secs(30),
        );
        let (blockhash, _) = rpc
            .get_latest_blockhash_with_commitment(CommitmentConfig::confirmed())
            .await?;
        let instruction =
            system_instruction::transfer(&payer.pubkey(), &recipient, AMOUNT_LAMPORTS);
        let transaction = VersionedTransaction::from(Transaction::new_signed_with_payer(
            &[instruction],
            Some(&payer.pubkey()),
            &[&payer],
            blockhash,
        ));
        let gun = SolanaGunQuicClient::connect(
            GUN_HOST_PORT,
            GUN_TOKEN,
            ClientConfig::default(),
        )
        .await?;
        gun.send_transaction_bytes(&bincode::serialize(&transaction)?)
            .await?;
        println!("Sent. Transaction signature: {}", transaction.signatures[0]);
        gun.close().await;
        Ok(())
    }

  4. cargo run --release

Submission response

The example prints the signature from your signed transaction. A successful send means the client wrote the transaction bytes. It does not guarantee server acceptance or confirmation on Solana.

Did this answer your question?