orca_tx_sender

A Rust crate for building and sending Solana transactions with priority fees and Jito tips.

Features

• Dynamic priority fee calculation based on recent network fees
• Jito tip support for MEV extraction
• Automatic compute unit budget estimation
• Retry logic with exponential backoff
• Configurable transaction parameters
• Async/await support with Tokio
• Global configuration with thread-safe access

Version Compatibility

• Solana CLI: >=1.16, <3.0
• Solana SDK: >=1.16

Installation

Add the following to your Cargo.toml:

[dependencies]
orca_tx_sender = { version = "0.1.0" }

Usage Examples

Basic Example

use orca_tx_sender::{
    build_and_send_transaction,
    PriorityFeeStrategy, Percentile,
    set_priority_fee_strategy, set_rpc, get_rpc_client
};
use solana_sdk::pubkey::Pubkey;
use solana_sdk::signature::{Keypair, Signer};
use solana_sdk::system_instruction;
use solana_sdk::commitment_config::CommitmentLevel;
use std::error::Error;
use std::str::FromStr;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    // Initialize RPC configuration (required!)
    set_rpc("https://api.mainnet-beta.solana.com").await?;

    // Check connection
    let client = get_rpc_client()?;
    println!("Connected to Solana");

    // Configure priority fees
    set_priority_fee_strategy(PriorityFeeStrategy::Dynamic {
        percentile: Percentile::P95,
        max_lamports: 10_000,
    })?;

    // Create a keypair for signing
    let payer = Keypair::new();
    println!("Using keypair: {}", payer.pubkey());

    // Check balance
    let balance = client.get_balance(&payer.pubkey()).await?;
    println!("Account balance: {} lamports", balance);

    // Jupiter Program address as an example recipient
    let recipient = Pubkey::from_str("JUP2jxvXaqu7NQY1GmNF4m1vodw12LVXYxbFL2uJvfo").unwrap();

    // Create transfer instruction
    let transfer_ix = system_instruction::transfer(
        &payer.pubkey(),
        &recipient,
        1_000_000, // 0.001 SOL
    );

    // Build and send transaction
    println!("Sending transaction...");
    let signature = build_and_send_transaction(
        vec![transfer_ix],
        &[&payer],
        Some(CommitmentLevel::Confirmed),
        None, // No address lookup tables
    ).await?;

    println!("Transaction sent: {}", signature);
    Ok(())
}

Example With Jito Fees

use orca_tx_sender::{
    build_and_send_transaction,
    JitoFeeStrategy, Percentile, JitoPercentile, PriorityFeeStrategy, SendOptions,
    set_priority_fee_strategy, set_jito_fee_strategy, set_compute_unit_margin_multiplier,
    set_jito_block_engine_url, set_rpc, get_rpc_client
};
use solana_sdk::pubkey::Pubkey;
use solana_sdk::signature::{Keypair, Signer};
use solana_sdk::system_instruction;
use solana_sdk::commitment_config::CommitmentLevel;
use std::error::Error;
use std::str::FromStr;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    // Initialize RPC configuration (required!)
    set_rpc("https://api.mainnet-beta.solana.com").await?;

    // Check connection
    let client = get_rpc_client()?;
    println!("Connected to Solana");

    // Configure fee settings with dynamic priority fees and Jito fees
    let compute_multiplier = 1.1;
    let jito_url = "https://bundles.jito.wtf".to_string();

    // Set individual configuration options
    set_priority_fee_strategy(PriorityFeeStrategy::Dynamic {
        percentile: Percentile::P95,
        max_lamports: 10_000,
    })?;

    set_jito_fee_strategy(JitoFeeStrategy::Dynamic {
        percentile: JitoPercentile::P95,
        max_lamports: 10_000,
    })?;
    set_compute_unit_margin_multiplier(compute_multiplier)?;
    set_jito_block_engine_url(jito_url.clone())?;

    // Create a keypair for signing
    let payer = Keypair::new();
    println!("Using keypair: {}", payer.pubkey());

    // Check balance
    let balance = client.get_balance(&payer.pubkey()).await?;
    println!("Account balance: {} lamports", balance);

    // Jupiter Program address as an example recipient
    let recipient = Pubkey::from_str("JUP2jxvXaqu7NQY1GmNF4m1vodw12LVXYxbFL2uJvfo").unwrap();

    // Create transfer instruction
    let transfer_ix = system_instruction::transfer(
        &payer.pubkey(),
        &recipient,
        1_000_000, // 0.001 SOL
    );

    // Build and send transaction
    println!("Sending transaction with priority fees and Jito fees...");
    let signature = build_and_send_transaction(
        vec![transfer_ix],
        &[&payer],
        Some(CommitmentLevel::Confirmed),
        None, // No address lookup tables
    ).await?;

    println!("Transaction sent: {}", signature);
    Ok(())
}

Global Configuration Options

RPC Configuration

// Must be explicitly set before sending transactions
set_rpc("https://api.mainnet-beta.solana.com").await?;

Fee Configuration

// Dynamic priority fees based on network conditions
set_priority_fee_strategy(PriorityFeeStrategy::Dynamic {
    percentile: Percentile::P95,
    max_lamports: 1_000_000, // 1 SOL
})?;

// Fixed priority fee
// set_priority_fee_strategy(PriorityFeeStrategy::Exact(10_000))?;

// No priority fee
// set_priority_fee_strategy(PriorityFeeStrategy::Disabled)?;

// Configure Jito tips
set_jito_fee_strategy(JitoFeeStrategy::Dynamic {
    percentile: JitoPercentile::P50,
    max_lamports: 500_000, // 0.5 SOL
})?;

// Set compute unit margin multiplier (default: 1.1)
set_compute_unit_margin_multiplier(1.2)?;

Transaction Options

Transaction options can be provided directly when sending:

// Use with global configuration
let signature = build_and_send_transaction(
    instructions,
    signers,
    Some(CommitmentLevel::Confirmed),
    None, // No address lookup tables
).await?;

// With address lookup tables for account compression
let signature = build_and_send_transaction(
    instructions,
    signers,
    Some(CommitmentLevel::Processed),
    Some(address_lookup_tables), // With ALTs
).await?;

// Use default commitment level by passing None
let signature = build_and_send_transaction(
    instructions,
    signers,
    None,
    None,
).await?;

Testing

All testing and example code is located in the examples directory. You can run the examples directly:

# Priority fees only (no Jito fees)
cargo run --example priority_only_test "https://api.devnet.solana.com"

# With Jito fees
cargo run --example with_jito_test "https://api.mainnet-beta.solana.com"

# With address lookup tables
cargo run --example with_lookup_tables "https://api.mainnet-beta.solana.com"

You can provide any custom RPC URL as a command-line argument. If no URL is provided, the examples will default to using the Solana devnet URL.

License

Orca License

See LICENSE for details.