feat: forward original bincoded transaction

magicblock-account-cloner/src/lib.rs

@@ -40,7 +40,9 @@ use magicblock_chainlink::{
 };
 use magicblock_committor_service::{BaseIntentCommittor, CommittorService};
 use magicblock_config::config::ChainLinkConfig;
-use magicblock_core::link::transactions::TransactionSchedulerHandle;
+use magicblock_core::link::transactions::{
+    with_encoded, TransactionSchedulerHandle,
+};
 use magicblock_ledger::LatestBlock;
 use magicblock_magic_program_api::{
     args::ScheduleTaskArgs,
@@ -102,7 +104,7 @@ impl ChainlinkCloner {
 
     async fn send_tx(&self, tx: Transaction) -> ClonerResult<Signature> {
         let sig = tx.signatures[0];
-        self.tx_scheduler.execute(tx).await?;
+        self.tx_scheduler.execute(with_encoded(tx)?).await?;
         Ok(sig)
     }
 

magicblock-accounts/src/scheduled_commits_processor.rs

@@ -18,7 +18,9 @@ use magicblock_committor_service::{
     intent_execution_manager::BroadcastedIntentExecutionResult,
     intent_executor::ExecutionOutput, BaseIntentCommittor, CommittorService,
 };
-use magicblock_core::link::transactions::TransactionSchedulerHandle;
+use magicblock_core::link::transactions::{
+    with_encoded, TransactionSchedulerHandle,
+};
 use magicblock_metrics::metrics;
 use magicblock_program::{
     magic_scheduled_base_intent::ScheduledIntentBundle,
@@ -200,10 +202,12 @@ impl ScheduledCommitsProcessorImpl {
         let sent_commit =
             Self::build_sent_commit(intent_id, intent_meta, result);
         register_scheduled_commit_sent(sent_commit);
-        match internal_transaction_scheduler
-            .execute(intent_sent_transaction)
-            .await
-        {
+        let Ok(txn) = with_encoded(intent_sent_transaction) else {
+            // Unreachable case, all intent transactions are smaller than 64KB by construction
+            error!("Failed to bincode intent transaction");
+            return;
+        };
+        match internal_transaction_scheduler.execute(txn).await {
             Ok(()) => {
                 debug!("Sent commit signaled")
             }

magicblock-aperture/src/requests/http/mod.rs

@@ -8,7 +8,9 @@ use hyper::{
     Request, Response,
 };
 use magicblock_accounts_db::traits::AccountsBank;
-use magicblock_core::link::transactions::SanitizeableTransaction;
+use magicblock_core::link::transactions::{
+    SanitizeableTransaction, WithEncoded,
+};
 use magicblock_metrics::metrics::{AccountFetchOrigin, ENSURE_ACCOUNTS_TIME};
 use prelude::JsonBody;
 use solana_account::AccountSharedData;
@@ -170,14 +172,19 @@ impl HttpDispatcher {
     /// 3. Validates the transaction's `recent_blockhash` against the ledger, optionally
     ///    replacing it with the latest one.
     /// 4. Sanitizes the transaction, which includes verifying signatures unless disabled.
+    ///
+    /// Returns `WithEncoded<SanitizedTransaction>` with the original wire bytes.
+    /// For execution (replace_blockhash=false), bytes are preserved for replication.
+    /// For simulation (replace_blockhash=true), bytes are unused.
     fn prepare_transaction(
         &self,
         txn: &str,
         encoding: UiTransactionEncoding,
         sigverify: bool,
         replace_blockhash: bool,
-    ) -> RpcResult<SanitizedTransaction> {
-        let decoded = match encoding {
+    ) -> RpcResult<WithEncoded<SanitizedTransaction>> {
+        // parse the string as bincode serialized bytes
+        let encoded = match encoding {
             UiTransactionEncoding::Base58 => {
                 bs58::decode(txn).into_vec().map_err(RpcError::parse_error)
             }
@@ -190,7 +197,7 @@ impl HttpDispatcher {
         }?;
 
         let mut transaction: VersionedTransaction =
-            bincode::deserialize(&decoded).map_err(RpcError::invalid_params)?;
+            bincode::deserialize(&encoded).map_err(RpcError::invalid_params)?;
 
         if replace_blockhash {
             transaction
@@ -205,7 +212,8 @@ impl HttpDispatcher {
             };
         }
 
-        Ok(transaction.sanitize(sigverify)?)
+        let txn = transaction.sanitize(sigverify)?;
+        Ok(WithEncoded { txn, encoded })
     }
 
     /// Ensures all accounts required for a transaction are present in the `AccountsDb`.
@@ -224,7 +232,7 @@ impl HttpDispatcher {
         {
             Ok(res) if res.is_ok() => Ok(()),
             Ok(res) => {
-                debug!(result = %res, "Transaction account resolution encountered issues");
+                debug!(%res, "Transaction account resolution encountered issues");
                 Ok(())
             }
             Err(err) => {

magicblock-aperture/src/requests/http/request_airdrop.rs

@@ -1,4 +1,4 @@
-use magicblock_core::link::transactions::SanitizeableTransaction;
+use magicblock_core::link::transactions::with_encoded;
 
 use super::prelude::*;
 
@@ -35,11 +35,13 @@ impl HttpDispatcher {
             lamports,
             self.blocks.get_latest().hash,
         );
-        // we don't need to verify transaction that we just signed
-        let txn = txn.sanitize(false)?;
-        let signature = SerdeSignature(*txn.signature());
+        // we just signed the transaction, it must have a signature
+        let signature =
+            SerdeSignature(txn.signatures.first().cloned().unwrap_or_default());
 
-        self.transactions_scheduler.execute(txn).await?;
+        self.transactions_scheduler
+            .execute(with_encoded(txn)?)
+            .await?;
 
         Ok(ResponsePayload::encode_no_context(&request.id, signature))
     }

magicblock-aperture/src/requests/http/send_transaction.rs

@@ -32,25 +32,23 @@ impl HttpDispatcher {
             .inspect_err(
                 |err| debug!(error = ?err, "Failed to prepare transaction"),
             )?;
-        let signature = *transaction.signature();
+        let signature = *transaction.txn.signature();
 
-        // Perform a replay check and reserve the signature in the cache. This prevents
-        // a transaction from being processed twice within the blockhash validity period.
+        // Perform a replay check and reserve the signature in the cache
         if self.transactions.contains(&signature)
             || !self.transactions.push(signature, None)
         {
             return Err(TransactionError::AlreadyProcessed.into());
         }
-        self.ensure_transaction_accounts(&transaction).await?;
+
+        self.ensure_transaction_accounts(&transaction.txn).await?;
 
         // Based on the preflight flag, either execute and await the result,
         // or schedule (fire-and-forget) for background processing.
         if config.skip_preflight {
             TRANSACTION_SKIP_PREFLIGHT.inc();
             self.transactions_scheduler.schedule(transaction).await?;
-            trace!("Transaction scheduled");
         } else {
-            trace!("Transaction executing");
             self.transactions_scheduler.execute(transaction).await?;
         }
 

magicblock-aperture/src/requests/http/simulate_transaction.rs

@@ -43,7 +43,7 @@ impl HttpDispatcher {
             .inspect_err(|err| {
                 debug!(error = ?err, "Failed to prepare transaction to simulate")
             })?;
-        self.ensure_transaction_accounts(&transaction).await?;
+        self.ensure_transaction_accounts(&transaction.txn).await?;
 
         let replacement_blockhash = config
             .replace_recent_blockhash
@@ -52,7 +52,7 @@ impl HttpDispatcher {
         // Submit the transaction to the scheduler for simulation.
         let result = self
             .transactions_scheduler
-            .simulate(transaction)
+            .simulate(transaction.txn)
             .await
             .map_err(RpcError::transaction_simulation)?;
 

magicblock-api/src/tickers.rs

@@ -9,7 +9,8 @@ use std::{
 use magicblock_accounts::ScheduledCommitsProcessor;
 use magicblock_accounts_db::{traits::AccountsBank, AccountsDb};
 use magicblock_core::link::{
-    blocks::BlockUpdateTx, transactions::TransactionSchedulerHandle,
+    blocks::BlockUpdateTx,
+    transactions::{with_encoded, TransactionSchedulerHandle},
 };
 use magicblock_ledger::{LatestBlock, Ledger};
 use magicblock_magic_program_api as magic_program;
@@ -89,6 +90,11 @@ async fn handle_scheduled_commits<C: ScheduledCommitsProcessor>(
     let tx = InstructionUtils::accept_scheduled_commits(
         latest_block.load().blockhash,
     );
+    let Ok(tx) = with_encoded(tx) else {
+        // Unreachable case, all schedule commit txns are smaller than 64KB by construction
+        error!("Failed to bincode intent transaction");
+        return;
+    };
     if let Err(err) = transaction_scheduler.execute(tx).await {
         error!(error = ?err, "Failed to accept scheduled commits");
         return;

magicblock-core/Cargo.toml

@@ -11,6 +11,7 @@ edition.workspace = true
 
 tokio = { workspace = true, features = ["sync"] }
 flume = { workspace = true }
+bincode = { workspace = true }
 
 serde = { workspace = true, features = ["derive"] }
 solana-account = { workspace = true }

magicblock-core/src/link/transactions.rs

@@ -1,5 +1,6 @@
 use flume::{Receiver as MpmcReceiver, Sender as MpmcSender};
 use magicblock_magic_program_api::args::TaskRequest;
+use serde::Serialize;
 use solana_program::message::{
     inner_instruction::InnerInstructionsList, SimpleAddressLoader,
 };
@@ -69,6 +70,9 @@ pub struct TransactionStatus {
 pub struct ProcessableTransaction {
     pub transaction: SanitizedTransaction,
     pub mode: TransactionProcessingMode,
+    /// Pre-encoded bincode bytes for the transaction.
+    /// Used by the replicator to avoid redundant serialization.
+    pub encoded: Option<Vec<u8>>,
 }
 
 /// An enum that specifies how a transaction should be processed by the scheduler.
@@ -115,6 +119,57 @@ pub trait SanitizeableTransaction {
         self,
         verify: bool,
     ) -> Result<SanitizedTransaction, TransactionError>;
+
+    /// Sanitizes the transaction and optionally provides pre-encoded bincode bytes.
+    ///
+    /// Default implementation delegates to `sanitize()` and returns `None` for encoded bytes.
+    /// Override this method when you have pre-encoded bytes (e.g., from the wire) to avoid
+    /// redundant serialization.
+    fn sanitize_with_encoded(
+        self,
+        verify: bool,
+    ) -> Result<(SanitizedTransaction, Option<Vec<u8>>), TransactionError>
+    where
+        Self: Sized,
+    {
+        let txn = self.sanitize(verify)?;
+        Ok((txn, None))
+    }
+}
+
+/// Wraps a transaction with its pre-encoded bincode representation.
+/// Use for internally-constructed transactions that need encoded bytes.
+pub struct WithEncoded<T> {
+    pub txn: T,
+    pub encoded: Vec<u8>,
+}
+
+impl<T: SanitizeableTransaction> SanitizeableTransaction for WithEncoded<T> {
+    fn sanitize(
+        self,
+        verify: bool,
+    ) -> Result<SanitizedTransaction, TransactionError> {
+        self.txn.sanitize(verify)
+    }
+
+    fn sanitize_with_encoded(
+        self,
+        verify: bool,
+    ) -> Result<(SanitizedTransaction, Option<Vec<u8>>), TransactionError> {
+        let txn = self.txn.sanitize(verify)?;
+        Ok((txn, Some(self.encoded)))
+    }
+}
+
+/// Encodes a transaction to bincode and wraps it with its encoded form.
+/// Use for internally-constructed transactions that need the encoded bytes.
+pub fn with_encoded<T>(txn: T) -> Result<WithEncoded<T>, TransactionError>
+where
+    T: Serialize,
+{
+    let encoded = bincode::serialize(&txn)
+        .map_err(|_| TransactionError::SanitizeFailure)?;
+    Ok(WithEncoded { txn, encoded })
 }
 
 impl SanitizeableTransaction for SanitizedTransaction {
@@ -162,9 +217,13 @@ impl TransactionSchedulerHandle {
         &self,
         txn: impl SanitizeableTransaction,
     ) -> TransactionResult {
-        let transaction = txn.sanitize(true)?;
+        let (transaction, encoded) = txn.sanitize_with_encoded(true)?;
         let mode = TransactionProcessingMode::Execution(None);
-        let txn = ProcessableTransaction { transaction, mode };
+        let txn = ProcessableTransaction {
+            transaction,
+            mode,
+            encoded,
+        };
         let r = self.0.send(txn).await;
         r.map_err(|_| TransactionError::ClusterMaintenance)
     }
@@ -208,10 +267,14 @@ impl TransactionSchedulerHandle {
         txn: impl SanitizeableTransaction,
         mode: fn(oneshot::Sender<R>) -> TransactionProcessingMode,
     ) -> Result<R, TransactionError> {
-        let transaction = txn.sanitize(true)?;
+        let (transaction, encoded) = txn.sanitize_with_encoded(true)?;
         let (tx, rx) = oneshot::channel();
         let mode = mode(tx);
-        let txn = ProcessableTransaction { transaction, mode };
+        let txn = ProcessableTransaction {
+            transaction,
+            mode,
+            encoded,
+        };
         self.0
             .send(txn)
             .await

magicblock-processor/src/scheduler/tests.rs

@@ -49,6 +49,7 @@ fn mock_txn(accounts: &[(Pubkey, bool)]) -> TransactionWithId {
     TransactionWithId::new(ProcessableTransaction {
         transaction: transaction.sanitize(false).unwrap(),
         mode: TransactionProcessingMode::Execution(None),
+        encoded: None,
     })
 }