From 799956e18ef852de10e9fdefcf8b2a7e95fe39fd Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 16:44:54 -0400
Subject: [PATCH 01/19] finish encoding / decoding

---
 crates/net/eth-wire/src/types/transactions.rs | 287 +++++++++++++++++-
 crates/primitives/src/transaction/eip1559.rs  |  29 ++
 crates/primitives/src/transaction/eip2930.rs  |  27 ++
 crates/primitives/src/transaction/eip4844.rs  |  33 ++
 crates/primitives/src/transaction/mod.rs      |  48 +--
 .../primitives/src/transaction/signature.rs   |   6 +-
 6 files changed, 384 insertions(+), 46 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 35a8a764912..71ea751b0be 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -1,10 +1,15 @@
 //! Implements the `GetPooledTransactions` and `PooledTransactions` message types.
-use reth_codecs::{add_arbitrary_tests, derive_arbitrary};
+use bytes::Buf;
+use reth_codecs::derive_arbitrary;
 use reth_primitives::{
     kzg::{self, Blob, Bytes48, KzgProof, KzgSettings},
-    TransactionSigned, H256,
+    Signature, Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844,
+    EIP4844_TX_TYPE_ID, H256,
+};
+use reth_rlp::{
+    Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
+    EMPTY_LIST_CODE,
 };
-use reth_rlp::{RlpDecodable, RlpDecodableWrapper, RlpEncodable, RlpEncodableWrapper};
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -67,13 +72,107 @@ impl From<PooledTransactions> for Vec<TransactionSigned> {
     }
 }
 
+/// A response to [`GetPooledTransactions`]. This can include either a blob transaction, or a
+/// non-4844 signed transaction.
+// TODO: redo arbitrary for this encoding - the previous encoding was incorrect
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum PooledTransactionResponse {
+    /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
+    BlobTransaction(BlobTransaction),
+    /// A non-4844 signed transaction.
+    Transaction(TransactionSigned),
+}
+
+impl Encodable for PooledTransactionResponse {
+    /// Encodes an enveloped post EIP-4844 [PooledTransaction] response.
+    fn encode(&self, out: &mut dyn bytes::BufMut) {
+        match self {
+            Self::Transaction(tx) => tx.encode(out),
+            Self::BlobTransaction(blob_tx) => {
+                // The inner encoding is used with `with_header` set to true, making the final
+                // encoding:
+                // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+                blob_tx.encode_with_type_inner(out, true);
+            }
+        }
+    }
+
+    fn length(&self) -> usize {
+        match self {
+            Self::Transaction(tx) => tx.length(),
+            Self::BlobTransaction(blob_tx) => {
+                // the encoding uses a header, so we set `with_header` to true
+                blob_tx.payload_len_with_type(true)
+            }
+        }
+    }
+}
+
+impl Decodable for PooledTransactionResponse {
+    /// Decodes an enveloped post EIP-4844 [PooledTransaction] response.
+    ///
+    /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
+    fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        // From the EIP-4844 spec:
+        // Blob transactions have two network representations. During transaction gossip responses
+        // (`PooledTransactions`), the EIP-2718 `TransactionPayload` of the blob transaction is
+        // wrapped to become:
+        //
+        // `rlp([tx_payload_body, blobs, commitments, proofs])`
+        //
+        // Because non-4844 signed transaction payloads start with a type byte (0x01 - 0x7f), and
+        // blob transactions are encoded as a list (header starts with 0xc0 - 0xff), we can
+        // disambiguate the two types of transaction payloads by checking the first byte of the
+        // first element of the payload. If the first element is a list, we will decode the payload
+        // as a blob transaction. Otherwise, we will decode it as a non-4844 signed transaction.
+        //
+        // First, we check whether or not the transaction is a legacy transaction.
+        if buf.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // Check if the tx is a list
+        if buf[0] >= EMPTY_LIST_CODE {
+            // decode as legacy transaction
+            let legacy_tx = TransactionSigned::decode_rlp_legacy_transaction(buf)?;
+            Ok(PooledTransactionResponse::Transaction(legacy_tx))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                buf.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(buf)?;
+                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer, since we want the enveloped decoding to decode it
+                // again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
+                Ok(PooledTransactionResponse::Transaction(typed_tx))
+            }
+        }
+    }
+}
+
 /// A response to [`GetPooledTransactions`] that includes blob data, their commitments, and their
 /// corresponding proofs.
 ///
 /// This is defined in [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844#networking) as an element
 /// of a [PooledTransactions] response.
-#[add_arbitrary_tests(rlp, 20)]
-#[derive(Clone, Debug, PartialEq, Eq, RlpEncodable, RlpDecodable, Default)]
+#[derive(Clone, Debug, PartialEq, Eq, Default)]
 pub struct BlobTransaction {
     /// The transaction payload.
     pub transaction: TransactionSigned,
@@ -105,6 +204,184 @@ impl BlobTransaction {
             proof_settings,
         )
     }
+
+    /// Encodes the [BlobTransaction] fields as RLP, with a tx type. If `with_header` is `false`,
+    /// the following will be encoded:
+    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// If `with_header` is `true`, the following will be encoded:
+    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+    ///
+    /// NOTE: The header will be a byte string header, not a list header.
+    pub fn encode_with_type_inner(&self, out: &mut dyn bytes::BufMut, with_header: bool) {
+        // Calculate the length of:
+        // `tx_type || rlp([transaction_payload_body, blobs, commitments, proofs])`
+        //
+        // to construct and encode the string header
+        if with_header {
+            Header {
+                list: false,
+                // add one for the tx type
+                payload_length: 1 + self.payload_len(),
+            }
+            .encode(out);
+        }
+
+        out.put_u8(EIP4844_TX_TYPE_ID);
+
+        // Now we encode the inner blob transaction:
+        self.encode_inner(out);
+    }
+
+    /// Encodes the [BlobTransaction] fields as RLP, with the following format:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP encoding methods, and does not
+    /// represent the full RLP encoding of the blob transaction.
+    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
+        // First we construct both required list headers.
+        //
+        // The `transaction_payload_body` length is the length of the fields, plus the length of
+        // its list header.
+        let tx_header = Header {
+            list: true,
+            payload_length: self.transaction.fields_len() +
+                self.transaction.signature.payload_len(),
+        };
+
+        let tx_length = tx_header.length() + tx_header.payload_length;
+
+        // The payload length is the length of the `tranascation_payload_body` list, plus the
+        // length of the blobs, commitments, and proofs.
+        let payload_length =
+            tx_length + self.blobs.length() + self.commitments.length() + self.proofs.length();
+
+        // First we use the payload len to construct the first list header
+        let blob_tx_header = Header { list: true, payload_length };
+
+        // Encode the blob tx header first
+        blob_tx_header.encode(out);
+
+        // Encode the inner tx list header, then its fields
+        tx_header.encode(out);
+        self.transaction.encode_fields(out);
+
+        // Encode the blobs, commitments, and proofs
+        self.blobs.encode(out);
+        self.commitments.encode(out);
+        self.proofs.encode(out);
+    }
+
+    /// Ouputs the length of the RLP encoding of the blob transaction, including the tx type byte,
+    /// optionally including the length of a wrapping string header. If `with_header` is `false`,
+    /// the length of the following will be calculated:
+    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// If `with_header` is `true`, the length of the following will be calculated:
+    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+    pub fn payload_len_with_type(&self, with_header: bool) -> usize {
+        if with_header {
+            // Construct a header and use that to calculate the total length
+            let wrapped_header = Header {
+                list: false,
+                // add one for the tx type byte
+                payload_length: 1 + self.payload_len(),
+            };
+
+            // The total length is now the length of the header plus the length of the payload
+            // (which includes the tx type byte)
+            wrapped_header.length() + wrapped_header.payload_length
+        } else {
+            // Just add the length of the tx type to the payload length
+            1 + self.payload_len()
+        }
+    }
+
+    /// Outputs the length of the RLP encoding of the blob transaction with the following format:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP encoding length methods, and
+    /// does not represent the full RLP encoding of the blob transaction.
+    pub fn payload_len(&self) -> usize {
+        // The `transaction_payload_body` length is the length of the fields, plus the length of
+        // its list header.
+        let tx_header = Header {
+            list: true,
+            payload_length: self.transaction.fields_len() +
+                self.transaction.signature.payload_len(),
+        };
+
+        let tx_length = tx_header.length() + tx_header.payload_length;
+
+        // The payload length is the length of the `tranascation_payload_body` list, plus the
+        // length of the blobs, commitments, and proofs.
+        tx_length + self.blobs.length() + self.commitments.length() + self.proofs.length()
+    }
+
+    /// Decodes a [BlobTransaction] from RLP. This expects the encoding to be:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP decoding methods, and does not
+    /// represent the full RLP decoding of the [PooledTransaction] type.
+    pub fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
+        // decode the _first_ list header for the rest of the transaction
+        let header = Header::decode(data)?;
+        if !header.list {
+            return Err(DecodeError::Custom("PooledTransactions blob tx must be encoded as a list"))
+        }
+
+        // Now we need to decode the inner 4844 transaction and its signature:
+        //
+        // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+        let header = Header::decode(data)?;
+        if !header.list {
+            return Err(DecodeError::Custom(
+                "PooledTransactions inner blob tx must be encoded as a list",
+            ))
+        }
+
+        // inner transaction
+        let transaction = Transaction::Eip4844(TxEip4844::decode_inner(data)?);
+
+        // signature
+        let signature = Signature::decode(data)?;
+
+        // construct the tx now that we've decoded the fields in order
+        let tx_no_hash = TransactionSignedNoHash { transaction, signature };
+
+        // All that's left are the blobs, commitments, and proofs
+        let blobs = <Vec<Blob> as Decodable>::decode(data)?;
+        let commitments = <Vec<Bytes48> as Decodable>::decode(data)?;
+        let proofs = <Vec<Bytes48> as Decodable>::decode(data)?;
+
+        // # Calculating the hash
+        //
+        // The full encoding of the [PooledTransaction] response is:
+        // `tx_type (0x03) || rlp([tx_payload_body, blobs, commitments, proofs])`
+        //
+        // The transaction hash however, is:
+        // `keccak256(tx_type (0x03) || rlp(tx_payload_body))`
+        //
+        // Note that this is `tx_payload_body`, not `[tx_payload_body]`, which would be
+        // `[[chain_id, nonce, max_priority_fee_per_gas, ...]]`, i.e. a list within a list.
+        //
+        // Because the pooled transaction encoding is different than the hash encoding for
+        // EIP-4844 transactions, we do not use the original buffer to calculate the hash.
+        //
+        // Instead, we use [TransactionSignedNoHash] which will encode the transaction internally.
+        let signed_tx = tx_no_hash.with_hash();
+
+        Ok(Self { transaction: signed_tx, blobs, commitments, proofs })
+    }
 }
 
 #[cfg(any(test, feature = "arbitrary"))]
diff --git a/crates/primitives/src/transaction/eip1559.rs b/crates/primitives/src/transaction/eip1559.rs
index ba3e18a6d2b..3a8dcec7a8a 100644
--- a/crates/primitives/src/transaction/eip1559.rs
+++ b/crates/primitives/src/transaction/eip1559.rs
@@ -1,6 +1,7 @@
 use super::access_list::AccessList;
 use crate::{Bytes, ChainId, TransactionKind};
 use reth_codecs::{main_codec, Compact};
+use reth_rlp::{Decodable, DecodeError};
 use std::mem;
 
 /// A transaction with a priority fee ([EIP-1559](https://eips.ethereum.org/EIPS/eip-1559)).
@@ -82,6 +83,34 @@ impl TxEip1559 {
         }
     }
 
+    /// Decodes the inner [TxEip1559] fields from RLP bytes.
+    ///
+    /// NOTE: This assumes a RLP header has already been decoded, and _just_ decodes the following
+    /// RLP fields in the following order:
+    ///
+    /// - `chain_id`
+    /// - `nonce`
+    /// - `max_priority_fee_per_gas`
+    /// - `max_fee_per_gas`
+    /// - `gas_limit`
+    /// - `to`
+    /// - `value`
+    /// - `data` (`input`)
+    /// - `access_list`
+    pub(crate) fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        Ok(Self {
+            chain_id: Decodable::decode(buf)?,
+            nonce: Decodable::decode(buf)?,
+            max_priority_fee_per_gas: Decodable::decode(buf)?,
+            max_fee_per_gas: Decodable::decode(buf)?,
+            gas_limit: Decodable::decode(buf)?,
+            to: Decodable::decode(buf)?,
+            value: Decodable::decode(buf)?,
+            input: Bytes(Decodable::decode(buf)?),
+            access_list: Decodable::decode(buf)?,
+        })
+    }
+
     /// Calculates a heuristic for the in-memory size of the [TxEip1559] transaction.
     #[inline]
     pub fn size(&self) -> usize {
diff --git a/crates/primitives/src/transaction/eip2930.rs b/crates/primitives/src/transaction/eip2930.rs
index ecd6ecb7ec2..16029ac97dd 100644
--- a/crates/primitives/src/transaction/eip2930.rs
+++ b/crates/primitives/src/transaction/eip2930.rs
@@ -1,6 +1,7 @@
 use super::access_list::AccessList;
 use crate::{Bytes, ChainId, TransactionKind};
 use reth_codecs::{main_codec, Compact};
+use reth_rlp::{Decodable, DecodeError};
 use std::mem;
 
 /// Transaction with an [`AccessList`] ([EIP-2930](https://eips.ethereum.org/EIPS/eip-2930)).
@@ -64,6 +65,32 @@ impl TxEip2930 {
         self.access_list.size() + // access_list
         self.input.len() // input
     }
+
+    /// Decodes the inner [TxEip2930] fields from RLP bytes.
+    ///
+    /// NOTE: This assumes a RLP header has already been decoded, and _just_ decodes the following
+    /// RLP fields in the following order:
+    ///
+    /// - `chain_id`
+    /// - `nonce`
+    /// - `gas_price`
+    /// - `gas_limit`
+    /// - `to`
+    /// - `value`
+    /// - `data` (`input`)
+    /// - `access_list`
+    pub(crate) fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        Ok(Self {
+            chain_id: Decodable::decode(buf)?,
+            nonce: Decodable::decode(buf)?,
+            gas_price: Decodable::decode(buf)?,
+            gas_limit: Decodable::decode(buf)?,
+            to: Decodable::decode(buf)?,
+            value: Decodable::decode(buf)?,
+            input: Bytes(Decodable::decode(buf)?),
+            access_list: Decodable::decode(buf)?,
+        })
+    }
 }
 
 #[cfg(test)]
diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index f9da9b0970e..5a71a4f0bf0 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -1,6 +1,7 @@
 use super::access_list::AccessList;
 use crate::{constants::eip4844::DATA_GAS_PER_BLOB, Bytes, ChainId, TransactionKind, H256};
 use reth_codecs::{main_codec, Compact};
+use reth_rlp::{Decodable, DecodeError};
 use std::mem;
 
 /// [EIP-4844 Blob Transaction](https://eips.ethereum.org/EIPS/eip-4844#blob-transaction)
@@ -100,6 +101,38 @@ impl TxEip4844 {
         self.blob_versioned_hashes.len() as u64 * DATA_GAS_PER_BLOB
     }
 
+    /// Decodes the inner [TxEip4844] fields from RLP bytes.
+    ///
+    /// NOTE: This assumes a RLP header has already been decoded, and _just_ decodes the following
+    /// RLP fields in the following order:
+    ///
+    /// - `chain_id`
+    /// - `nonce`
+    /// - `max_priority_fee_per_gas`
+    /// - `max_fee_per_gas`
+    /// - `gas_limit`
+    /// - `to`
+    /// - `value`
+    /// - `data` (`input`)
+    /// - `access_list`
+    /// - `max_fee_per_blob_gas`
+    /// - `blob_versioned_hashes`
+    pub fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        Ok(Self {
+            chain_id: Decodable::decode(buf)?,
+            nonce: Decodable::decode(buf)?,
+            max_priority_fee_per_gas: Decodable::decode(buf)?,
+            max_fee_per_gas: Decodable::decode(buf)?,
+            gas_limit: Decodable::decode(buf)?,
+            to: Decodable::decode(buf)?,
+            value: Decodable::decode(buf)?,
+            input: Bytes(Decodable::decode(buf)?),
+            access_list: Decodable::decode(buf)?,
+            max_fee_per_blob_gas: Decodable::decode(buf)?,
+            blob_versioned_hashes: Decodable::decode(buf)?,
+        })
+    }
+
     /// Calculates a heuristic for the in-memory size of the [TxEip4844] transaction.
     #[inline]
     pub fn size(&self) -> usize {
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index ed347ce3f46..1badf6e15e7 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -343,7 +343,7 @@ impl Transaction {
 
     /// Outputs the length of the transaction's fields, without a RLP header or length of the
     /// eip155 fields.
-    pub(crate) fn fields_len(&self) -> usize {
+    pub fn fields_len(&self) -> usize {
         match self {
             Transaction::Legacy(TxLegacy {
                 chain_id: _,
@@ -438,7 +438,7 @@ impl Transaction {
     }
 
     /// Encodes only the transaction's fields into the desired buffer, without a RLP header.
-    pub(crate) fn encode_fields(&self, out: &mut dyn bytes::BufMut) {
+    pub fn encode_fields(&self, out: &mut dyn bytes::BufMut) {
         match self {
             Transaction::Legacy(TxLegacy {
                 chain_id: _,
@@ -1059,7 +1059,9 @@ impl TransactionSigned {
     /// Decodes legacy transaction from the data buffer.
     ///
     /// This expects `rlp(legacy_tx)`
-    fn decode_rlp_legacy_transaction(data: &mut &[u8]) -> Result<TransactionSigned, DecodeError> {
+    pub fn decode_rlp_legacy_transaction(
+        data: &mut &[u8],
+    ) -> Result<TransactionSigned, DecodeError> {
         // keep this around, so we can use it to calculate the hash
         let original_encoding = *data;
 
@@ -1088,7 +1090,7 @@ impl TransactionSigned {
     /// Decodes en enveloped EIP-2718 typed transaction.
     ///
     /// CAUTION: this expects that `data` is `[id, rlp(tx)]`
-    fn decode_enveloped_typed_transaction(
+    pub fn decode_enveloped_typed_transaction(
         data: &mut &[u8],
     ) -> Result<TransactionSigned, DecodeError> {
         // keep this around so we can use it to calculate the hash
@@ -1096,6 +1098,7 @@ impl TransactionSigned {
 
         let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
         data.advance(1);
+
         // decode the list header for the rest of the transaction
         let header = Header::decode(data)?;
         if !header.list {
@@ -1107,40 +1110,9 @@ impl TransactionSigned {
 
         // decode common fields
         let transaction = match tx_type {
-            1 => Transaction::Eip2930(TxEip2930 {
-                chain_id: Decodable::decode(data)?,
-                nonce: Decodable::decode(data)?,
-                gas_price: Decodable::decode(data)?,
-                gas_limit: Decodable::decode(data)?,
-                to: Decodable::decode(data)?,
-                value: Decodable::decode(data)?,
-                input: Bytes(Decodable::decode(data)?),
-                access_list: Decodable::decode(data)?,
-            }),
-            2 => Transaction::Eip1559(TxEip1559 {
-                chain_id: Decodable::decode(data)?,
-                nonce: Decodable::decode(data)?,
-                max_priority_fee_per_gas: Decodable::decode(data)?,
-                max_fee_per_gas: Decodable::decode(data)?,
-                gas_limit: Decodable::decode(data)?,
-                to: Decodable::decode(data)?,
-                value: Decodable::decode(data)?,
-                input: Bytes(Decodable::decode(data)?),
-                access_list: Decodable::decode(data)?,
-            }),
-            3 => Transaction::Eip4844(TxEip4844 {
-                chain_id: Decodable::decode(data)?,
-                nonce: Decodable::decode(data)?,
-                max_priority_fee_per_gas: Decodable::decode(data)?,
-                max_fee_per_gas: Decodable::decode(data)?,
-                gas_limit: Decodable::decode(data)?,
-                to: Decodable::decode(data)?,
-                value: Decodable::decode(data)?,
-                input: Bytes(Decodable::decode(data)?),
-                access_list: Decodable::decode(data)?,
-                max_fee_per_blob_gas: Decodable::decode(data)?,
-                blob_versioned_hashes: Decodable::decode(data)?,
-            }),
+            1 => Transaction::Eip2930(TxEip2930::decode_inner(data)?),
+            2 => Transaction::Eip1559(TxEip1559::decode_inner(data)?),
+            3 => Transaction::Eip4844(TxEip4844::decode_inner(data)?),
             _ => return Err(DecodeError::Custom("unsupported typed transaction type")),
         };
 
diff --git a/crates/primitives/src/transaction/signature.rs b/crates/primitives/src/transaction/signature.rs
index 6977d8c2618..cfe639a04e9 100644
--- a/crates/primitives/src/transaction/signature.rs
+++ b/crates/primitives/src/transaction/signature.rs
@@ -93,19 +93,19 @@ impl Signature {
     }
 
     /// Output the length of the signature without the length of the RLP header
-    pub(crate) fn payload_len(&self) -> usize {
+    pub fn payload_len(&self) -> usize {
         self.odd_y_parity.length() + self.r.length() + self.s.length()
     }
 
     /// Encode the `odd_y_parity`, `r`, `s` values without a RLP header.
-    pub(crate) fn encode(&self, out: &mut dyn reth_rlp::BufMut) {
+    pub fn encode(&self, out: &mut dyn reth_rlp::BufMut) {
         self.odd_y_parity.encode(out);
         self.r.encode(out);
         self.s.encode(out);
     }
 
     /// Decodes the `odd_y_parity`, `r`, `s` values without a RLP header.
-    pub(crate) fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+    pub fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
         Ok(Signature {
             odd_y_parity: Decodable::decode(buf)?,
             r: Decodable::decode(buf)?,

From 4338afd2632b3fe982d891bde9e03dd200b059d5 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:01:30 -0400
Subject: [PATCH 02/19] use string vs list header to disambiguate legacy

---
 crates/net/eth-wire/src/types/transactions.rs | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 71ea751b0be..1cd1533d07c 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -120,19 +120,20 @@ impl Decodable for PooledTransactionResponse {
         //
         // `rlp([tx_payload_body, blobs, commitments, proofs])`
         //
-        // Because non-4844 signed transaction payloads start with a type byte (0x01 - 0x7f), and
-        // blob transactions are encoded as a list (header starts with 0xc0 - 0xff), we can
-        // disambiguate the two types of transaction payloads by checking the first byte of the
-        // first element of the payload. If the first element is a list, we will decode the payload
-        // as a blob transaction. Otherwise, we will decode it as a non-4844 signed transaction.
+        // This means the full wire encoding is:
+        // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
         //
         // First, we check whether or not the transaction is a legacy transaction.
         if buf.is_empty() {
             return Err(DecodeError::InputTooShort)
         }
 
+        // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
+        // transaction
+        let header = Header::decode(buf)?;
+
         // Check if the tx is a list
-        if buf[0] >= EMPTY_LIST_CODE {
+        if header.list {
             // decode as legacy transaction
             let legacy_tx = TransactionSigned::decode_rlp_legacy_transaction(buf)?;
             Ok(PooledTransactionResponse::Transaction(legacy_tx))

From d0f875eb1a159a789d9c455ab5cd69670120f087 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:06:02 -0400
Subject: [PATCH 03/19] use proper buffer advancement semantics for blobtx

---
 crates/net/eth-wire/src/types/transactions.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 1cd1533d07c..b8ea34af7c8 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -128,6 +128,9 @@ impl Decodable for PooledTransactionResponse {
             return Err(DecodeError::InputTooShort)
         }
 
+        // keep this around for buffer advancement post-legacy decoding
+        let mut original_encoding = *buf;
+
         // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
         // transaction
         let header = Header::decode(buf)?;
@@ -135,7 +138,13 @@ impl Decodable for PooledTransactionResponse {
         // Check if the tx is a list
         if header.list {
             // decode as legacy transaction
-            let legacy_tx = TransactionSigned::decode_rlp_legacy_transaction(buf)?;
+            let legacy_tx =
+                TransactionSigned::decode_rlp_legacy_transaction(&mut original_encoding)?;
+
+            // advance the buffer based on how far `decode_rlp_legacy_transaction` advanced the
+            // buffer
+            *buf = original_encoding;
+
             Ok(PooledTransactionResponse::Transaction(legacy_tx))
         } else {
             // decode the type byte, only decode BlobTransaction if it is a 4844 transaction

From b89fbe39a78422197095084d9db344fbf893e8d7 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:06:18 -0400
Subject: [PATCH 04/19] add blob sidecar

---
 crates/primitives/src/transaction/eip4844.rs | 48 +++++++++++++++++++-
 crates/primitives/src/transaction/mod.rs     |  2 +
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 5a71a4f0bf0..215c80523ca 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -1,7 +1,8 @@
 use super::access_list::AccessList;
 use crate::{constants::eip4844::DATA_GAS_PER_BLOB, Bytes, ChainId, TransactionKind, H256};
+use c_kzg::{Blob, Bytes48};
 use reth_codecs::{main_codec, Compact};
-use reth_rlp::{Decodable, DecodeError};
+use reth_rlp::{Decodable, DecodeError, Encodable};
 use std::mem;
 
 /// [EIP-4844 Blob Transaction](https://eips.ethereum.org/EIPS/eip-4844#blob-transaction)
@@ -149,3 +150,48 @@ impl TxEip4844 {
         mem::size_of::<u128>() // max_fee_per_data_gas
     }
 }
+
+/// This represents a set of blobs, and its corresponding commitments and proofs.
+#[derive(Clone, Debug, PartialEq, Eq, Default)]
+pub struct BlobSidecar {
+    /// The blob data.
+    pub blobs: Vec<Blob>,
+    /// The blob commitments.
+    pub commitments: Vec<Bytes48>,
+    /// The blob proofs.
+    pub proofs: Vec<Bytes48>,
+}
+
+impl BlobSidecar {
+    /// Encodes the inner [BlobSidecar] fields as RLP bytes, without a RLP header.
+    ///
+    /// This encodes the fields in the following order:
+    /// - `blobs`
+    /// - `commitments`
+    /// - `proofs`
+    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
+        // Encode the blobs, commitments, and proofs
+        self.blobs.encode(out);
+        self.commitments.encode(out);
+        self.proofs.encode(out);
+    }
+
+    /// Outputs the RLP length of the [BlobSidecar] fields, without a RLP header.
+    pub fn fields_len(&self) -> usize {
+        self.blobs.len() + self.commitments.len() + self.proofs.len()
+    }
+
+    /// Decodes the inner [BlobSidecar] fields from RLP bytes, without a RLP header.
+    ///
+    /// This decodes the fields in the following order:
+    /// - `blobs`
+    /// - `commitments`
+    /// - `proofs`
+    pub fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        Ok(Self {
+            blobs: Decodable::decode(buf)?,
+            commitments: Decodable::decode(buf)?,
+            proofs: Decodable::decode(buf)?,
+        })
+    }
+}
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 1badf6e15e7..4e2ed423343 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -1059,6 +1059,8 @@ impl TransactionSigned {
     /// Decodes legacy transaction from the data buffer.
     ///
     /// This expects `rlp(legacy_tx)`
+    // TODO: make buf advancement semantics consistent with `decode_enveloped_typed_transaction`,
+    // so decoding methods do not need to manually advance the buffer
     pub fn decode_rlp_legacy_transaction(
         data: &mut &[u8],
     ) -> Result<TransactionSigned, DecodeError> {

From e295b0321c16360cbe19fb1e5e8954c8d1b90e84 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:06:45 -0400
Subject: [PATCH 05/19] remove unused import

---
 crates/net/eth-wire/src/types/transactions.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index b8ea34af7c8..91f944d1225 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -8,7 +8,6 @@ use reth_primitives::{
 };
 use reth_rlp::{
     Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
-    EMPTY_LIST_CODE,
 };
 
 #[cfg(feature = "serde")]

From 0687828e535d44600c596a6ab725445d54ae0118 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:29:26 -0400
Subject: [PATCH 06/19] start versioned hash verification

---
 crates/net/eth-wire/src/types/transactions.rs | 35 +++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 91f944d1225..33ef2cbc10a 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -73,7 +73,8 @@ impl From<PooledTransactions> for Vec<TransactionSigned> {
 
 /// A response to [`GetPooledTransactions`]. This can include either a blob transaction, or a
 /// non-4844 signed transaction.
-// TODO: redo arbitrary for this encoding - the previous encoding was incorrect
+// TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
+// replaced with `TransactionSigned` in `PooledTransactions`
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub enum PooledTransactionResponse {
     /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
@@ -181,6 +182,10 @@ impl Decodable for PooledTransactionResponse {
 ///
 /// This is defined in [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844#networking) as an element
 /// of a [PooledTransactions] response.
+///
+/// NOTE: This contains a [TransactionSigned], which could be a non-4844 transaction type, even
+/// though that would not make sense. This type is meant to be constructed using decoding methods,
+/// which should always construct the [TransactionSigned] with an EIP-4844 transaction.
 #[derive(Clone, Debug, PartialEq, Eq, Default)]
 pub struct BlobTransaction {
     /// The transaction payload.
@@ -203,8 +208,34 @@ impl BlobTransaction {
     /// commitments, and proofs. Each blob data element is verified against its commitment and
     /// proof.
     ///
-    /// Returns `false` if any blob KZG proof in the response fails to verify.
+    /// Returns `false` if any blob KZG proof in the response fails to verify, or if the versioned
+    /// hashes in the transaction do not match the actual commitment versioned hashes.
     pub fn validate(&self, proof_settings: &KzgSettings) -> Result<bool, kzg::Error> {
+        let inner_tx = match &self.transaction.transaction {
+            Transaction::Eip4844(blob_tx) => blob_tx,
+            _ => {
+                todo!()
+                // return Err()
+            }
+        };
+
+        // Ensure the versioned hashes and commitments have the same length
+        if inner_tx.blob_versioned_hashes.len() != self.commitments.len() {
+            return Err(kzg::Error::MismatchLength(format!(
+                "There are {} versioned commitment hashes and {} commitments",
+                inner_tx.blob_versioned_hashes.len(),
+                self.commitments.len()
+            )))
+        }
+
+        // zip and iterate, calculating versioned hashes
+        for (versioned_hash, commitment) in
+            inner_tx.blob_versioned_hashes.iter().zip(self.commitments.iter())
+        {
+            // Calculate the versioned hash
+            todo!()
+        }
+
         // Verify as a batch
         KzgProof::verify_blob_kzg_proof_batch(
             self.blobs.as_slice(),

From 489a8084bc0107ed9ae98975a765bba0e6de4725 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 17:51:11 -0400
Subject: [PATCH 07/19] validate versioned hashes

---
 crates/net/eth-wire/src/types/transactions.rs | 20 +++++++++++++++----
 crates/primitives/src/lib.rs                  |  1 +
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 33ef2cbc10a..dc98acc43e9 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -1,10 +1,12 @@
 //! Implements the `GetPooledTransactions` and `PooledTransactions` message types.
+use std::ops::Deref;
+
 use bytes::Buf;
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
-    kzg::{self, Blob, Bytes48, KzgProof, KzgSettings},
+    kzg::{self, KzgCommitment, Blob, Bytes48, KzgProof, KzgSettings},
     Signature, Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844,
-    EIP4844_TX_TYPE_ID, H256,
+    EIP4844_TX_TYPE_ID, H256, kzg_to_versioned_hash,
 };
 use reth_rlp::{
     Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
@@ -23,7 +25,7 @@ use proptest::{
 #[cfg(any(test, feature = "arbitrary"))]
 use reth_primitives::{
     constants::eip4844::{FIELD_ELEMENTS_PER_BLOB, KZG_TRUSTED_SETUP},
-    kzg::{KzgCommitment, BYTES_PER_BLOB, BYTES_PER_FIELD_ELEMENT},
+    kzg::{BYTES_PER_BLOB, BYTES_PER_FIELD_ELEMENT},
 };
 
 /// A list of transaction hashes that the peer would like transaction bodies for.
@@ -232,8 +234,18 @@ impl BlobTransaction {
         for (versioned_hash, commitment) in
             inner_tx.blob_versioned_hashes.iter().zip(self.commitments.iter())
         {
+            // convert to KzgCommitment
+            let commitment = KzgCommitment::from(*commitment.deref());
+
             // Calculate the versioned hash
-            todo!()
+            //
+            // TODO: should this method distinguish the type of validation failure? For example
+            // whether a certain versioned hash does not match, or whether the blob proof
+            // validation failed?
+            let calculated_versioned_hash = kzg_to_versioned_hash(commitment);
+            if *versioned_hash != calculated_versioned_hash {
+                return Ok(false);
+            }
         }
 
         // Verify as a batch
diff --git a/crates/primitives/src/lib.rs b/crates/primitives/src/lib.rs
index 065dd2500cf..11bbe1b439d 100644
--- a/crates/primitives/src/lib.rs
+++ b/crates/primitives/src/lib.rs
@@ -67,6 +67,7 @@ pub use compression::*;
 pub use constants::{
     DEV_GENESIS, EMPTY_OMMER_ROOT, GOERLI_GENESIS, KECCAK_EMPTY, MAINNET_GENESIS, SEPOLIA_GENESIS,
 };
+pub use eip4844::{kzg_to_versioned_hash, calculate_excess_blob_gas};
 pub use forkid::{ForkFilter, ForkHash, ForkId, ForkTransition, ValidationError};
 pub use genesis::{Genesis, GenesisAccount};
 pub use hardfork::Hardfork;

From 6eddc328f9058dcd22bb86799fe91e5f8915a203 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 18:15:33 -0400
Subject: [PATCH 08/19] use BlobSidecar in BlobTransaction

---
 crates/net/eth-wire/src/types/transactions.rs | 80 +++++++++++--------
 crates/primitives/src/lib.rs                  |  4 +-
 crates/primitives/src/transaction/mod.rs      |  2 +-
 3 files changed, 50 insertions(+), 36 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index dc98acc43e9..8c69dd7d22d 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -4,9 +4,9 @@ use std::ops::Deref;
 use bytes::Buf;
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
-    kzg::{self, KzgCommitment, Blob, Bytes48, KzgProof, KzgSettings},
-    Signature, Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844,
-    EIP4844_TX_TYPE_ID, H256, kzg_to_versioned_hash,
+    kzg::{self, KzgCommitment, KzgProof, KzgSettings},
+    kzg_to_versioned_hash, BlobSidecar, Signature, Transaction, TransactionSigned,
+    TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID, H256,
 };
 use reth_rlp::{
     Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
@@ -25,7 +25,7 @@ use proptest::{
 #[cfg(any(test, feature = "arbitrary"))]
 use reth_primitives::{
     constants::eip4844::{FIELD_ELEMENTS_PER_BLOB, KZG_TRUSTED_SETUP},
-    kzg::{BYTES_PER_BLOB, BYTES_PER_FIELD_ELEMENT},
+    kzg::{Blob, Bytes48, BYTES_PER_BLOB, BYTES_PER_FIELD_ELEMENT},
 };
 
 /// A list of transaction hashes that the peer would like transaction bodies for.
@@ -179,6 +179,21 @@ impl Decodable for PooledTransactionResponse {
     }
 }
 
+/// An error that can occur when validating a [BlobTransaction].
+#[derive(Debug)]
+pub enum BlobTransactionValidationError {
+    /// An error returned by the [kzg] library
+    KZGError(kzg::Error),
+    /// The inner transaction is not a blob transaction
+    NotBlobTransaction(TxType),
+}
+
+impl From<kzg::Error> for BlobTransactionValidationError {
+    fn from(value: kzg::Error) -> Self {
+        Self::KZGError(value)
+    }
+}
+
 /// A response to [`GetPooledTransactions`] that includes blob data, their commitments, and their
 /// corresponding proofs.
 ///
@@ -192,12 +207,8 @@ impl Decodable for PooledTransactionResponse {
 pub struct BlobTransaction {
     /// The transaction payload.
     pub transaction: TransactionSigned,
-    /// The transaction's blob data.
-    pub blobs: Vec<Blob>,
-    /// The transaction's blob commitments.
-    pub commitments: Vec<Bytes48>,
-    /// The transaction's blob proofs.
-    pub proofs: Vec<Bytes48>,
+    /// The transaction's blob sidecar.
+    pub sidecar: BlobSidecar,
 }
 
 impl BlobTransaction {
@@ -212,27 +223,32 @@ impl BlobTransaction {
     ///
     /// Returns `false` if any blob KZG proof in the response fails to verify, or if the versioned
     /// hashes in the transaction do not match the actual commitment versioned hashes.
-    pub fn validate(&self, proof_settings: &KzgSettings) -> Result<bool, kzg::Error> {
+    pub fn validate(
+        &self,
+        proof_settings: &KzgSettings,
+    ) -> Result<bool, BlobTransactionValidationError> {
         let inner_tx = match &self.transaction.transaction {
             Transaction::Eip4844(blob_tx) => blob_tx,
-            _ => {
-                todo!()
-                // return Err()
+            non_blob_tx => {
+                return Err(BlobTransactionValidationError::NotBlobTransaction(
+                    non_blob_tx.tx_type(),
+                ))
             }
         };
 
         // Ensure the versioned hashes and commitments have the same length
-        if inner_tx.blob_versioned_hashes.len() != self.commitments.len() {
+        if inner_tx.blob_versioned_hashes.len() != self.sidecar.commitments.len() {
             return Err(kzg::Error::MismatchLength(format!(
                 "There are {} versioned commitment hashes and {} commitments",
                 inner_tx.blob_versioned_hashes.len(),
-                self.commitments.len()
-            )))
+                self.sidecar.commitments.len()
+            ))
+            .into())
         }
 
         // zip and iterate, calculating versioned hashes
         for (versioned_hash, commitment) in
-            inner_tx.blob_versioned_hashes.iter().zip(self.commitments.iter())
+            inner_tx.blob_versioned_hashes.iter().zip(self.sidecar.commitments.iter())
         {
             // convert to KzgCommitment
             let commitment = KzgCommitment::from(*commitment.deref());
@@ -244,17 +260,18 @@ impl BlobTransaction {
             // validation failed?
             let calculated_versioned_hash = kzg_to_versioned_hash(commitment);
             if *versioned_hash != calculated_versioned_hash {
-                return Ok(false);
+                return Ok(false)
             }
         }
 
         // Verify as a batch
         KzgProof::verify_blob_kzg_proof_batch(
-            self.blobs.as_slice(),
-            self.commitments.as_slice(),
-            self.proofs.as_slice(),
+            self.sidecar.blobs.as_slice(),
+            self.sidecar.commitments.as_slice(),
+            self.sidecar.proofs.as_slice(),
             proof_settings,
         )
+        .map_err(Into::into)
     }
 
     /// Encodes the [BlobTransaction] fields as RLP, with a tx type. If `with_header` is `false`,
@@ -308,8 +325,7 @@ impl BlobTransaction {
 
         // The payload length is the length of the `tranascation_payload_body` list, plus the
         // length of the blobs, commitments, and proofs.
-        let payload_length =
-            tx_length + self.blobs.length() + self.commitments.length() + self.proofs.length();
+        let payload_length = tx_length + self.sidecar.fields_len();
 
         // First we use the payload len to construct the first list header
         let blob_tx_header = Header { list: true, payload_length };
@@ -322,9 +338,7 @@ impl BlobTransaction {
         self.transaction.encode_fields(out);
 
         // Encode the blobs, commitments, and proofs
-        self.blobs.encode(out);
-        self.commitments.encode(out);
-        self.proofs.encode(out);
+        self.sidecar.encode_inner(out);
     }
 
     /// Ouputs the length of the RLP encoding of the blob transaction, including the tx type byte,
@@ -373,7 +387,7 @@ impl BlobTransaction {
 
         // The payload length is the length of the `tranascation_payload_body` list, plus the
         // length of the blobs, commitments, and proofs.
-        tx_length + self.blobs.length() + self.commitments.length() + self.proofs.length()
+        tx_length + self.sidecar.fields_len()
     }
 
     /// Decodes a [BlobTransaction] from RLP. This expects the encoding to be:
@@ -411,9 +425,7 @@ impl BlobTransaction {
         let tx_no_hash = TransactionSignedNoHash { transaction, signature };
 
         // All that's left are the blobs, commitments, and proofs
-        let blobs = <Vec<Blob> as Decodable>::decode(data)?;
-        let commitments = <Vec<Bytes48> as Decodable>::decode(data)?;
-        let proofs = <Vec<Bytes48> as Decodable>::decode(data)?;
+        let sidecar = BlobSidecar::decode_inner(data)?;
 
         // # Calculating the hash
         //
@@ -432,7 +444,7 @@ impl BlobTransaction {
         // Instead, we use [TransactionSignedNoHash] which will encode the transaction internally.
         let signed_tx = tx_no_hash.with_hash();
 
-        Ok(Self { transaction: signed_tx, blobs, commitments, proofs })
+        Ok(Self { transaction: signed_tx, sidecar })
     }
 }
 
@@ -509,7 +521,9 @@ fn generate_blob_transaction(blobs: Vec<Blob>, transaction: TransactionSigned) -
         .map(|proof| proof.to_bytes())
         .collect();
 
-    BlobTransaction { transaction, blobs, commitments, proofs }
+    let sidecar = BlobSidecar { blobs, commitments, proofs };
+
+    BlobTransaction { transaction, sidecar }
 }
 #[cfg(test)]
 mod test {
diff --git a/crates/primitives/src/lib.rs b/crates/primitives/src/lib.rs
index 11bbe1b439d..97c3ac5a936 100644
--- a/crates/primitives/src/lib.rs
+++ b/crates/primitives/src/lib.rs
@@ -67,7 +67,7 @@ pub use compression::*;
 pub use constants::{
     DEV_GENESIS, EMPTY_OMMER_ROOT, GOERLI_GENESIS, KECCAK_EMPTY, MAINNET_GENESIS, SEPOLIA_GENESIS,
 };
-pub use eip4844::{kzg_to_versioned_hash, calculate_excess_blob_gas};
+pub use eip4844::{calculate_excess_blob_gas, kzg_to_versioned_hash};
 pub use forkid::{ForkFilter, ForkHash, ForkId, ForkTransition, ValidationError};
 pub use genesis::{Genesis, GenesisAccount};
 pub use hardfork::Hardfork;
@@ -90,7 +90,7 @@ pub use serde_helper::JsonU256;
 pub use storage::StorageEntry;
 pub use transaction::{
     util::secp256k1::{public_key_to_address, recover_signer, sign_message},
-    AccessList, AccessListItem, AccessListWithGasUsed, FromRecoveredTransaction,
+    AccessList, AccessListItem, AccessListWithGasUsed, BlobSidecar, FromRecoveredTransaction,
     IntoRecoveredTransaction, InvalidTransactionError, Signature, Transaction, TransactionKind,
     TransactionMeta, TransactionSigned, TransactionSignedEcRecovered, TransactionSignedNoHash,
     TxEip1559, TxEip2930, TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID, EIP2930_TX_TYPE_ID,
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 4e2ed423343..95293cc51b9 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -22,7 +22,7 @@ pub use tx_type::{
 
 pub use eip1559::TxEip1559;
 pub use eip2930::TxEip2930;
-pub use eip4844::TxEip4844;
+pub use eip4844::{BlobSidecar, TxEip4844};
 pub use legacy::TxLegacy;
 
 mod access_list;

From 8776fb6e6e990a1c8a097fd6ca0b8a563d254e77 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 18:49:45 -0400
Subject: [PATCH 09/19] add RPC decoding method

---
 crates/net/eth-wire/src/types/transactions.rs | 63 ++++++++++++++++++-
 1 file changed, 60 insertions(+), 3 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 8c69dd7d22d..f9dc2ceb316 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -1,7 +1,7 @@
 //! Implements the `GetPooledTransactions` and `PooledTransactions` message types.
 use std::ops::Deref;
 
-use bytes::Buf;
+use bytes::{Buf, Bytes};
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
     kzg::{self, KzgCommitment, KzgProof, KzgSettings},
@@ -10,6 +10,7 @@ use reth_primitives::{
 };
 use reth_rlp::{
     Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
+    EMPTY_LIST_CODE,
 };
 
 #[cfg(feature = "serde")]
@@ -85,6 +86,57 @@ pub enum PooledTransactionResponse {
     Transaction(TransactionSigned),
 }
 
+impl PooledTransactionResponse {
+    /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
+    ///
+    /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
+    /// For legacy transactions, the format is encoded as: `rlp(tx)`
+    /// For EIP-2718 typed transaction, the format is encoded as the type of the transaction
+    /// followed by the rlp of the transaction: `type` + `rlp(tx)`
+    ///
+    /// For encoded EIP-4844 transactions, the blob sidecar _must_ be included.
+    pub fn decode_enveloped(tx: Bytes) -> Result<Self, DecodeError> {
+        let mut data = tx.as_ref();
+
+        if data.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // Check if the tx is a list - tx types are less than EMPTY_LIST_CODE (0xc0)
+        if data[0] >= EMPTY_LIST_CODE {
+            // decode as legacy transaction
+            Ok(Self::Transaction(TransactionSigned::decode_rlp_legacy_transaction(&mut data)?))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                data.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(&mut data)?;
+                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
+                Ok(PooledTransactionResponse::Transaction(typed_tx))
+            }
+        }
+    }
+}
+
 impl Encodable for PooledTransactionResponse {
     /// Encodes an enveloped post EIP-4844 [PooledTransaction] response.
     fn encode(&self, out: &mut dyn bytes::BufMut) {
@@ -170,8 +222,8 @@ impl Decodable for PooledTransactionResponse {
                 let blob_tx = BlobTransaction::decode_inner(buf)?;
                 Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
             } else {
-                // DO NOT advance the buffer, since we want the enveloped decoding to decode it
-                // again and advance the buffer on its own.
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
                 let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
                 Ok(PooledTransactionResponse::Transaction(typed_tx))
             }
@@ -274,6 +326,11 @@ impl BlobTransaction {
         .map_err(Into::into)
     }
 
+    /// Splits the [BlobTransaction] into its [TransactionSigned] and [BlobSidecar] components.
+    pub fn into_parts(self) -> (TransactionSigned, BlobSidecar) {
+        (self.transaction, self.sidecar)
+    }
+
     /// Encodes the [BlobTransaction] fields as RLP, with a tx type. If `with_header` is `false`,
     /// the following will be encoded:
     /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`

From eda6b4722e3dc6c8b8228269ba64023dc2cead4f Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Sat, 12 Aug 2023 18:57:29 -0400
Subject: [PATCH 10/19] rename to BlobTransactionSidecar

---
 crates/net/eth-wire/src/types/transactions.rs | 13 +++++++------
 crates/primitives/src/lib.rs                  | 10 +++++-----
 crates/primitives/src/transaction/eip4844.rs  | 10 +++++-----
 crates/primitives/src/transaction/mod.rs      |  2 +-
 4 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index f9dc2ceb316..452855325af 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -5,7 +5,7 @@ use bytes::{Buf, Bytes};
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
     kzg::{self, KzgCommitment, KzgProof, KzgSettings},
-    kzg_to_versioned_hash, BlobSidecar, Signature, Transaction, TransactionSigned,
+    kzg_to_versioned_hash, BlobTransactionSidecar, Signature, Transaction, TransactionSigned,
     TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID, H256,
 };
 use reth_rlp::{
@@ -260,7 +260,7 @@ pub struct BlobTransaction {
     /// The transaction payload.
     pub transaction: TransactionSigned,
     /// The transaction's blob sidecar.
-    pub sidecar: BlobSidecar,
+    pub sidecar: BlobTransactionSidecar,
 }
 
 impl BlobTransaction {
@@ -326,8 +326,9 @@ impl BlobTransaction {
         .map_err(Into::into)
     }
 
-    /// Splits the [BlobTransaction] into its [TransactionSigned] and [BlobSidecar] components.
-    pub fn into_parts(self) -> (TransactionSigned, BlobSidecar) {
+    /// Splits the [BlobTransaction] into its [TransactionSigned] and [BlobTransactionSidecar]
+    /// components.
+    pub fn into_parts(self) -> (TransactionSigned, BlobTransactionSidecar) {
         (self.transaction, self.sidecar)
     }
 
@@ -482,7 +483,7 @@ impl BlobTransaction {
         let tx_no_hash = TransactionSignedNoHash { transaction, signature };
 
         // All that's left are the blobs, commitments, and proofs
-        let sidecar = BlobSidecar::decode_inner(data)?;
+        let sidecar = BlobTransactionSidecar::decode_inner(data)?;
 
         // # Calculating the hash
         //
@@ -578,7 +579,7 @@ fn generate_blob_transaction(blobs: Vec<Blob>, transaction: TransactionSigned) -
         .map(|proof| proof.to_bytes())
         .collect();
 
-    let sidecar = BlobSidecar { blobs, commitments, proofs };
+    let sidecar = BlobTransactionSidecar { blobs, commitments, proofs };
 
     BlobTransaction { transaction, sidecar }
 }
diff --git a/crates/primitives/src/lib.rs b/crates/primitives/src/lib.rs
index 97c3ac5a936..feeaa57a321 100644
--- a/crates/primitives/src/lib.rs
+++ b/crates/primitives/src/lib.rs
@@ -90,11 +90,11 @@ pub use serde_helper::JsonU256;
 pub use storage::StorageEntry;
 pub use transaction::{
     util::secp256k1::{public_key_to_address, recover_signer, sign_message},
-    AccessList, AccessListItem, AccessListWithGasUsed, BlobSidecar, FromRecoveredTransaction,
-    IntoRecoveredTransaction, InvalidTransactionError, Signature, Transaction, TransactionKind,
-    TransactionMeta, TransactionSigned, TransactionSignedEcRecovered, TransactionSignedNoHash,
-    TxEip1559, TxEip2930, TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID, EIP2930_TX_TYPE_ID,
-    EIP4844_TX_TYPE_ID, LEGACY_TX_TYPE_ID,
+    AccessList, AccessListItem, AccessListWithGasUsed, BlobTransactionSidecar,
+    FromRecoveredTransaction, IntoRecoveredTransaction, InvalidTransactionError, Signature,
+    Transaction, TransactionKind, TransactionMeta, TransactionSigned, TransactionSignedEcRecovered,
+    TransactionSignedNoHash, TxEip1559, TxEip2930, TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID,
+    EIP2930_TX_TYPE_ID, EIP4844_TX_TYPE_ID, LEGACY_TX_TYPE_ID,
 };
 pub use withdrawal::Withdrawal;
 
diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 215c80523ca..7d68f08da0f 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -153,7 +153,7 @@ impl TxEip4844 {
 
 /// This represents a set of blobs, and its corresponding commitments and proofs.
 #[derive(Clone, Debug, PartialEq, Eq, Default)]
-pub struct BlobSidecar {
+pub struct BlobTransactionSidecar {
     /// The blob data.
     pub blobs: Vec<Blob>,
     /// The blob commitments.
@@ -162,8 +162,8 @@ pub struct BlobSidecar {
     pub proofs: Vec<Bytes48>,
 }
 
-impl BlobSidecar {
-    /// Encodes the inner [BlobSidecar] fields as RLP bytes, without a RLP header.
+impl BlobTransactionSidecar {
+    /// Encodes the inner [BlobTransactionSidecar] fields as RLP bytes, without a RLP header.
     ///
     /// This encodes the fields in the following order:
     /// - `blobs`
@@ -176,12 +176,12 @@ impl BlobSidecar {
         self.proofs.encode(out);
     }
 
-    /// Outputs the RLP length of the [BlobSidecar] fields, without a RLP header.
+    /// Outputs the RLP length of the [BlobTransactionSidecar] fields, without a RLP header.
     pub fn fields_len(&self) -> usize {
         self.blobs.len() + self.commitments.len() + self.proofs.len()
     }
 
-    /// Decodes the inner [BlobSidecar] fields from RLP bytes, without a RLP header.
+    /// Decodes the inner [BlobTransactionSidecar] fields from RLP bytes, without a RLP header.
     ///
     /// This decodes the fields in the following order:
     /// - `blobs`
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 95293cc51b9..b96ebdb0d71 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -22,7 +22,7 @@ pub use tx_type::{
 
 pub use eip1559::TxEip1559;
 pub use eip2930::TxEip2930;
-pub use eip4844::{BlobSidecar, TxEip4844};
+pub use eip4844::{BlobTransactionSidecar, TxEip4844};
 pub use legacy::TxLegacy;
 
 mod access_list;

From ed40b02420eacc6e352a1ef7a989654a83752e29 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Tue, 15 Aug 2023 18:09:42 -0400
Subject: [PATCH 11/19] introduce geth test data

---
 Cargo.lock                                    | 121 ++++++++++--------
 Cargo.toml                                    |   5 +-
 crates/net/eth-wire/src/types/transactions.rs |  31 +++--
 crates/net/eth-wire/testdata/blob_transaction |   1 +
 .../testdata/pooled_transactions_with_blob    |   1 +
 .../net/eth-wire/tests/pooled_transactions.rs |  23 ++++
 crates/net/network/src/message.rs             |  10 +-
 crates/net/network/src/transactions.rs        |   9 +-
 crates/primitives/src/transaction/eip4844.rs  |  13 +-
 9 files changed, 143 insertions(+), 71 deletions(-)
 create mode 100644 crates/net/eth-wire/testdata/blob_transaction
 create mode 100644 crates/net/eth-wire/testdata/pooled_transactions_with_blob
 create mode 100644 crates/net/eth-wire/tests/pooled_transactions.rs

diff --git a/Cargo.lock b/Cargo.lock
index c89d13f2323..c22e923952d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -119,9 +119,9 @@ dependencies = [
 
 [[package]]
 name = "aho-corasick"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b8f9420f797f2d9e935edf629310eb938a0d839f984e25327f3c7eed22300c"
+checksum = "6748e8def348ed4d14996fa801f4122cd763fff530258cdc03f64b25f89d3a5a"
 dependencies = [
  "memchr",
 ]
@@ -230,9 +230,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.72"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b13c32d80ecc7ab747b80c3784bce54ee8a7a0cc4fbda9bf4cda2cf6fe90854"
+checksum = "8c6f84b74db2535ebae81eede2f39b947dcbf01d093ae5f791e5dd414a1bf289"
 
 [[package]]
 name = "aquamarine"
@@ -932,7 +932,7 @@ dependencies = [
 [[package]]
 name = "c-kzg"
 version = "0.1.0"
-source = "git+https://github.com/ethereum/c-kzg-4844#3ce8f863415ac1b218bc7d63cc14778b570aa081"
+source = "git+https://github.com/rjected/c-kzg-4844?branch=dan/add-serde-feature#4c95d6b8850f4f22a25fed0cf207560711cefe2b"
 dependencies = [
  "bindgen 0.64.0 (git+https://github.com/rust-lang/rust-bindgen?rev=0de11f0a521611ac8738b7b01d19dddaf3899e66)",
  "cc",
@@ -1899,9 +1899,9 @@ dependencies = [
 
 [[package]]
 name = "ed25519"
-version = "2.2.1"
+version = "2.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fb04eee5d9d907f29e80ee6b0e78f7e2c82342c63e3580d8c4f69d9d5aad963"
+checksum = "60f6d271ca33075c88028be6f04d502853d63a5ece419d269c15315d4fc1cf1d"
 dependencies = [
  "pkcs8",
  "signature",
@@ -2505,9 +2505,9 @@ dependencies = [
 
 [[package]]
 name = "flate2"
-version = "1.0.26"
+version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b9429470923de8e8cbd4d2dc513535400b4b3fef0319fb5c4e1f520a7bef743"
+checksum = "c6c98ee8095e9d1dcbf2fcc6d95acccb90d1c81db1e44725c6a984b1dbdfb010"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
@@ -3008,9 +3008,9 @@ checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
 [[package]]
 name = "httpdate"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
+checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
 [[package]]
 name = "human_bytes"
@@ -3105,7 +3105,7 @@ dependencies = [
  "iana-time-zone-haiku",
  "js-sys",
  "wasm-bindgen",
- "windows",
+ "windows 0.48.0",
 ]
 
 [[package]]
@@ -3957,9 +3957,9 @@ dependencies = [
 
 [[package]]
 name = "metrics-process"
-version = "1.0.11"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "006271a8019ad7a9a28cfac2cc40e3ee104d54be763c4a0901e228a63f49d706"
+checksum = "1c93f6ad342d3f7bc14724147e2dbc6eb6fdbe5a832ace16ea23b73618e8cc17"
 dependencies = [
  "libproc",
  "mach2",
@@ -3967,7 +3967,7 @@ dependencies = [
  "once_cell",
  "procfs",
  "rlimit",
- "windows",
+ "windows 0.51.0",
 ]
 
 [[package]]
@@ -4169,9 +4169,9 @@ dependencies = [
 
 [[package]]
 name = "num-complex"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02e0d21255c828d6f128a1e41534206671e8c3ea0c62f32291e808dc82cff17d"
+checksum = "1ba157ca0885411de85d6ca030ba7e2a83a28636056c7c699b07c8b6f7383214"
 dependencies = [
  "num-traits",
 ]
@@ -4469,7 +4469,7 @@ dependencies = [
  "libc",
  "redox_syscall 0.3.5",
  "smallvec 1.11.0",
- "windows-targets 0.48.1",
+ "windows-targets 0.48.2",
 ]
 
 [[package]]
@@ -5141,7 +5141,7 @@ version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "81bc1d4caf89fac26a70747fe603c130093b53c773888797a6329091246d651a"
 dependencies = [
- "aho-corasick 1.0.3",
+ "aho-corasick 1.0.4",
  "memchr",
  "regex-automata 0.3.6",
  "regex-syntax 0.7.4",
@@ -5162,7 +5162,7 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fed1ceff11a1dddaee50c9dc8e4938bd106e9d89ae372f192311e7da498e3b69"
 dependencies = [
- "aho-corasick 1.0.3",
+ "aho-corasick 1.0.4",
  "memchr",
  "regex-syntax 0.7.4",
 ]
@@ -6334,9 +6334,9 @@ dependencies = [
 
 [[package]]
 name = "rlimit"
-version = "0.9.1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8a29d87a652dc4d43c586328706bb5cdff211f3f39a530f240b53f7221dab8e"
+checksum = "3560f70f30a0f16d11d01ed078a07740fe6b489667abc7c7b029155d9f21c3d8"
 dependencies = [
  "libc",
 ]
@@ -6754,9 +6754,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.104"
+version = "1.0.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "076066c5f1078eac5b722a31827a8832fe108bed65dfa75e233c89f8206e976c"
+checksum = "693151e1ac27563d6dbcec9dee9fbd5da8539b20fa14ad3752b2e6d363ace360"
 dependencies = [
  "itoa",
  "ryu",
@@ -8349,7 +8349,26 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e686886bc078bc1b0b600cac0147aadb815089b6e4da64016cbd754b6342700f"
 dependencies = [
- "windows-targets 0.48.1",
+ "windows-targets 0.48.2",
+]
+
+[[package]]
+name = "windows"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9763fb813068e9f4ab70a92a0c6ad61ff6b342f693b1ed0e5387c854386e670"
+dependencies = [
+ "windows-core",
+ "windows-targets 0.48.2",
+]
+
+[[package]]
+name = "windows-core"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b81650771e76355778637954dc9d7eb8d991cd89ad64ba26f21eeb3c22d8d836"
+dependencies = [
+ "windows-targets 0.48.2",
 ]
 
 [[package]]
@@ -8367,7 +8386,7 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
 dependencies = [
- "windows-targets 0.48.1",
+ "windows-targets 0.48.2",
 ]
 
 [[package]]
@@ -8387,17 +8406,17 @@ dependencies = [
 
 [[package]]
 name = "windows-targets"
-version = "0.48.1"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d4b17490f70499f20b9e791dcf6a299785ce8af4d709018206dc5b4953e95f"
+checksum = "d1eeca1c172a285ee6c2c84c341ccea837e7c01b12fbb2d0fe3c9e550ce49ec8"
 dependencies = [
- "windows_aarch64_gnullvm 0.48.0",
- "windows_aarch64_msvc 0.48.0",
- "windows_i686_gnu 0.48.0",
- "windows_i686_msvc 0.48.0",
- "windows_x86_64_gnu 0.48.0",
- "windows_x86_64_gnullvm 0.48.0",
- "windows_x86_64_msvc 0.48.0",
+ "windows_aarch64_gnullvm 0.48.2",
+ "windows_aarch64_msvc 0.48.2",
+ "windows_i686_gnu 0.48.2",
+ "windows_i686_msvc 0.48.2",
+ "windows_x86_64_gnu 0.48.2",
+ "windows_x86_64_gnullvm 0.48.2",
+ "windows_x86_64_msvc 0.48.2",
 ]
 
 [[package]]
@@ -8408,9 +8427,9 @@ checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
+checksum = "b10d0c968ba7f6166195e13d593af609ec2e3d24f916f081690695cf5eaffb2f"
 
 [[package]]
 name = "windows_aarch64_msvc"
@@ -8420,9 +8439,9 @@ checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
+checksum = "571d8d4e62f26d4932099a9efe89660e8bd5087775a2ab5cdd8b747b811f1058"
 
 [[package]]
 name = "windows_i686_gnu"
@@ -8432,9 +8451,9 @@ checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
+checksum = "2229ad223e178db5fbbc8bd8d3835e51e566b8474bfca58d2e6150c48bb723cd"
 
 [[package]]
 name = "windows_i686_msvc"
@@ -8444,9 +8463,9 @@ checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
+checksum = "600956e2d840c194eedfc5d18f8242bc2e17c7775b6684488af3a9fff6fe3287"
 
 [[package]]
 name = "windows_x86_64_gnu"
@@ -8456,9 +8475,9 @@ checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
+checksum = "ea99ff3f8b49fb7a8e0d305e5aec485bd068c2ba691b6e277d29eaeac945868a"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
@@ -8468,9 +8487,9 @@ checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
+checksum = "8f1a05a1ece9a7a0d5a7ccf30ba2c33e3a61a30e042ffd247567d1de1d94120d"
 
 [[package]]
 name = "windows_x86_64_msvc"
@@ -8480,15 +8499,15 @@ checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.48.0"
+version = "0.48.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
+checksum = "d419259aba16b663966e29e6d7c6ecfa0bb8425818bb96f6f1f3c3eb71a6e7b9"
 
 [[package]]
 name = "winnow"
-version = "0.5.10"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5504cc7644f4b593cbc05c4a55bf9bd4e94b867c3c0bd440934174d50482427d"
+checksum = "1e461589e194280efaa97236b73623445efa195aa633fd7004f39805707a9d53"
 dependencies = [
  "memchr",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 2e60c4b8577..a18a52a0d32 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -152,4 +152,7 @@ c-kzg = { git = "https://github.com/ethereum/c-kzg-4844" }
 
 ### misc-testing
 proptest = "1.0"
-arbitrary = "1.1"
\ No newline at end of file
+arbitrary = "1.1"
+
+[patch."https://github.com/ethereum/c-kzg-4844"]
+c-kzg = { git = "https://github.com/rjected/c-kzg-4844", branch = "dan/add-serde-feature" }
\ No newline at end of file
diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 452855325af..8af2bab1c89 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -54,23 +54,17 @@ where
 /// as the request's hashes. Hashes may be skipped, and the client should ensure that each body
 /// corresponds to a requested hash. Hashes may need to be re-requested if the bodies are not
 /// included in the response.
-#[derive_arbitrary(rlp, 10)]
+// #[derive_arbitrary(rlp, 10)]
 #[derive(Clone, Debug, PartialEq, Eq, RlpEncodableWrapper, RlpDecodableWrapper, Default)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PooledTransactions(
     /// The transaction bodies, each of which should correspond to a requested hash.
-    pub Vec<TransactionSigned>,
+    pub Vec<PooledTransactionResponse>,
 );
 
 impl From<Vec<TransactionSigned>> for PooledTransactions {
     fn from(txs: Vec<TransactionSigned>) -> Self {
-        PooledTransactions(txs)
-    }
-}
-
-impl From<PooledTransactions> for Vec<TransactionSigned> {
-    fn from(txs: PooledTransactions) -> Self {
-        txs.0
+        PooledTransactions(txs.into_iter().map(Into::into).collect())
     }
 }
 
@@ -79,6 +73,7 @@ impl From<PooledTransactions> for Vec<TransactionSigned> {
 // TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
 // replaced with `TransactionSigned` in `PooledTransactions`
 #[derive(Clone, Debug, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum PooledTransactionResponse {
     /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
     BlobTransaction(BlobTransaction),
@@ -135,6 +130,14 @@ impl PooledTransactionResponse {
             }
         }
     }
+
+    /// Returns the inner [TransactionSigned].
+    pub fn into_transaction(self) -> TransactionSigned {
+        match self {
+            Self::Transaction(tx) => tx,
+            Self::BlobTransaction(blob_tx) => blob_tx.transaction,
+        }
+    }
 }
 
 impl Encodable for PooledTransactionResponse {
@@ -231,6 +234,15 @@ impl Decodable for PooledTransactionResponse {
     }
 }
 
+impl From<TransactionSigned> for PooledTransactionResponse {
+    /// Converts from a [TransactionSigned] to a [PooledTransactionResponse].
+    ///
+    /// NOTE: This will always return a [PooledTransactionResponse::Transaction] variant.
+    fn from(tx: TransactionSigned) -> Self {
+        Self::Transaction(tx)
+    }
+}
+
 /// An error that can occur when validating a [BlobTransaction].
 #[derive(Debug)]
 pub enum BlobTransactionValidationError {
@@ -256,6 +268,7 @@ impl From<kzg::Error> for BlobTransactionValidationError {
 /// though that would not make sense. This type is meant to be constructed using decoding methods,
 /// which should always construct the [TransactionSigned] with an EIP-4844 transaction.
 #[derive(Clone, Debug, PartialEq, Eq, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct BlobTransaction {
     /// The transaction payload.
     pub transaction: TransactionSigned,
diff --git a/crates/net/eth-wire/testdata/blob_transaction b/crates/net/eth-wire/testdata/blob_transaction
new file mode 100644
index 00000000000..130bd30e34f
--- /dev/null
+++ b/crates/net/eth-wire/testdata/blob_transaction
@@ -0,0 +1 @@
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diff --git a/crates/net/eth-wire/tests/pooled_transactions.rs b/crates/net/eth-wire/tests/pooled_transactions.rs
new file mode 100644
index 00000000000..5c5318ebcb0
--- /dev/null
+++ b/crates/net/eth-wire/tests/pooled_transactions.rs
@@ -0,0 +1,23 @@
+//! Decoding tests for [`PooledTransactions`]
+use reth_eth_wire::{PooledTransactionResponse, PooledTransactions};
+use reth_primitives::hex;
+use reth_rlp::Decodable;
+use std::{fs, path::PathBuf};
+
+#[test]
+fn decode_pooled_transactions_data() {
+    let network_data_path =
+        PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("testdata/pooled_transactions_with_blob");
+    let data = fs::read_to_string(network_data_path).expect("Unable to read file");
+    let hex_data = hex::decode(data.trim()).unwrap();
+    let _txs = PooledTransactions::decode(&mut &hex_data[..]).unwrap();
+}
+
+#[test]
+fn decode_blob_transaction_data() {
+    let network_data_path =
+        PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("testdata/blob_transaction");
+    let data = fs::read_to_string(network_data_path).expect("Unable to read file");
+    let hex_data = hex::decode(data.trim()).unwrap();
+    let _txs = PooledTransactionResponse::decode(&mut &hex_data[..]).unwrap();
+}
diff --git a/crates/net/network/src/message.rs b/crates/net/network/src/message.rs
index 1a50a649267..0d20d38c255 100644
--- a/crates/net/network/src/message.rs
+++ b/crates/net/network/src/message.rs
@@ -7,13 +7,11 @@ use futures::FutureExt;
 use reth_eth_wire::{
     capability::RawCapabilityMessage, message::RequestPair, BlockBodies, BlockHeaders, EthMessage,
     GetBlockBodies, GetBlockHeaders, GetNodeData, GetPooledTransactions, GetReceipts, NewBlock,
-    NewBlockHashes, NewPooledTransactionHashes, NodeData, PooledTransactions, Receipts,
-    SharedTransactions, Transactions,
+    NewBlockHashes, NewPooledTransactionHashes, NodeData, PooledTransactionResponse,
+    PooledTransactions, Receipts, SharedTransactions, Transactions,
 };
 use reth_interfaces::p2p::error::{RequestError, RequestResult};
-use reth_primitives::{
-    BlockBody, Bytes, Header, PeerId, ReceiptWithBloom, TransactionSigned, H256,
-};
+use reth_primitives::{BlockBody, Bytes, Header, PeerId, ReceiptWithBloom, H256};
 use std::{
     fmt,
     sync::Arc,
@@ -199,7 +197,7 @@ impl PeerResponse {
 pub enum PeerResponseResult {
     BlockHeaders(RequestResult<Vec<Header>>),
     BlockBodies(RequestResult<Vec<BlockBody>>),
-    PooledTransactions(RequestResult<Vec<TransactionSigned>>),
+    PooledTransactions(RequestResult<Vec<PooledTransactionResponse>>),
     NodeData(RequestResult<Vec<Bytes>>),
     Receipts(RequestResult<Vec<Vec<ReceiptWithBloom>>>),
 }
diff --git a/crates/net/network/src/transactions.rs b/crates/net/network/src/transactions.rs
index fe2e5e579d8..f5cc1487dd8 100644
--- a/crates/net/network/src/transactions.rs
+++ b/crates/net/network/src/transactions.rs
@@ -193,7 +193,8 @@ where
             // we sent a response at which point we assume that the peer is aware of the transaction
             peer.transactions.extend(transactions.iter().map(|tx| tx.hash()));
 
-            let resp = PooledTransactions(transactions);
+            // TODO: remove this! this will be different when we introduce the blobpool
+            let resp = PooledTransactions(transactions.into_iter().map(Into::into).collect());
             let _ = response.send(Ok(resp));
         }
     }
@@ -579,7 +580,11 @@ where
         {
             match result {
                 Ok(Ok(txs)) => {
-                    this.import_transactions(peer_id, txs.0, TransactionSource::Response);
+                    // convert all transactions to the inner transaction type, ignoring any
+                    // sidecars
+                    // TODO: remove this! this will be different when we introduce the blobpool
+                    let transactions = txs.0.into_iter().map(|tx| tx.into_transaction()).collect();
+                    this.import_transactions(peer_id, transactions, TransactionSource::Response)
                 }
                 Ok(Err(req_err)) => {
                     this.on_request_error(peer_id, req_err);
diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 7d68f08da0f..d1bee692573 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -1,8 +1,9 @@
 use super::access_list::AccessList;
 use crate::{constants::eip4844::DATA_GAS_PER_BLOB, Bytes, ChainId, TransactionKind, H256};
-use c_kzg::{Blob, Bytes48};
+use c_kzg::{Blob, Bytes48, BYTES_PER_BLOB, BYTES_PER_COMMITMENT, BYTES_PER_PROOF};
 use reth_codecs::{main_codec, Compact};
 use reth_rlp::{Decodable, DecodeError, Encodable};
+use serde::{Deserialize, Serialize};
 use std::mem;
 
 /// [EIP-4844 Blob Transaction](https://eips.ethereum.org/EIPS/eip-4844#blob-transaction)
@@ -152,7 +153,7 @@ impl TxEip4844 {
 }
 
 /// This represents a set of blobs, and its corresponding commitments and proofs.
-#[derive(Clone, Debug, PartialEq, Eq, Default)]
+#[derive(Clone, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
 pub struct BlobTransactionSidecar {
     /// The blob data.
     pub blobs: Vec<Blob>,
@@ -194,4 +195,12 @@ impl BlobTransactionSidecar {
             proofs: Decodable::decode(buf)?,
         })
     }
+
+    /// Calculates a size heuristic for the in-memory size of the [BlobTransactionSidecar].
+    #[inline]
+    pub fn size(&self) -> usize {
+        self.blobs.len() * BYTES_PER_BLOB + // blobs
+        self.commitments.len() * BYTES_PER_COMMITMENT + // commitments
+        self.proofs.len() * BYTES_PER_PROOF // proofs
+    }
 }

From cf62dce2f97bcdf8f8923669c30cd89b5cd372d2 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Tue, 15 Aug 2023 18:21:40 -0400
Subject: [PATCH 12/19] fix doc lint

---
 crates/net/eth-wire/src/types/transactions.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 8af2bab1c89..94cbf53c053 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -141,7 +141,7 @@ impl PooledTransactionResponse {
 }
 
 impl Encodable for PooledTransactionResponse {
-    /// Encodes an enveloped post EIP-4844 [PooledTransaction] response.
+    /// Encodes an enveloped post EIP-4844 [PooledTransactionResponse].
     fn encode(&self, out: &mut dyn bytes::BufMut) {
         match self {
             Self::Transaction(tx) => tx.encode(out),
@@ -166,7 +166,7 @@ impl Encodable for PooledTransactionResponse {
 }
 
 impl Decodable for PooledTransactionResponse {
-    /// Decodes an enveloped post EIP-4844 [PooledTransaction] response.
+    /// Decodes an enveloped post EIP-4844 [PooledTransactionResponse].
     ///
     /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
     fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
@@ -468,7 +468,7 @@ impl BlobTransaction {
     /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
     ///
     /// Note: this should be used only when implementing other RLP decoding methods, and does not
-    /// represent the full RLP decoding of the [PooledTransaction] type.
+    /// represent the full RLP decoding of the [PooledTransactionResponse] type.
     pub fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
         // decode the _first_ list header for the rest of the transaction
         let header = Header::decode(data)?;

From 4c54c7691bad188ed65d9bac710eb075176e2365 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 12:30:22 -0400
Subject: [PATCH 13/19] move types to primitives

---
 crates/net/eth-wire/src/types/transactions.rs | 533 +-----------------
 .../net/eth-wire/tests/pooled_transactions.rs |   4 +-
 crates/net/network/src/message.rs             |   8 +-
 crates/primitives/src/lib.rs                  |  11 +-
 crates/primitives/src/transaction/eip4844.rs  | 290 +++++++++-
 crates/primitives/src/transaction/mod.rs      | 176 +++++-
 6 files changed, 477 insertions(+), 545 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 94cbf53c053..e736262e4a7 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -5,8 +5,9 @@ use bytes::{Buf, Bytes};
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
     kzg::{self, KzgCommitment, KzgProof, KzgSettings},
-    kzg_to_versioned_hash, BlobTransactionSidecar, Signature, Transaction, TransactionSigned,
-    TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID, H256,
+    kzg_to_versioned_hash, BlobTransactionSidecar, PooledTransactionResponse, Signature,
+    Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID,
+    H256,
 };
 use reth_rlp::{
     Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
@@ -68,534 +69,6 @@ impl From<Vec<TransactionSigned>> for PooledTransactions {
     }
 }
 
-/// A response to [`GetPooledTransactions`]. This can include either a blob transaction, or a
-/// non-4844 signed transaction.
-// TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
-// replaced with `TransactionSigned` in `PooledTransactions`
-#[derive(Clone, Debug, PartialEq, Eq)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub enum PooledTransactionResponse {
-    /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
-    BlobTransaction(BlobTransaction),
-    /// A non-4844 signed transaction.
-    Transaction(TransactionSigned),
-}
-
-impl PooledTransactionResponse {
-    /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
-    ///
-    /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
-    /// For legacy transactions, the format is encoded as: `rlp(tx)`
-    /// For EIP-2718 typed transaction, the format is encoded as the type of the transaction
-    /// followed by the rlp of the transaction: `type` + `rlp(tx)`
-    ///
-    /// For encoded EIP-4844 transactions, the blob sidecar _must_ be included.
-    pub fn decode_enveloped(tx: Bytes) -> Result<Self, DecodeError> {
-        let mut data = tx.as_ref();
-
-        if data.is_empty() {
-            return Err(DecodeError::InputTooShort)
-        }
-
-        // Check if the tx is a list - tx types are less than EMPTY_LIST_CODE (0xc0)
-        if data[0] >= EMPTY_LIST_CODE {
-            // decode as legacy transaction
-            Ok(Self::Transaction(TransactionSigned::decode_rlp_legacy_transaction(&mut data)?))
-        } else {
-            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
-            let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
-
-            if tx_type == EIP4844_TX_TYPE_ID {
-                // Recall that the blob transaction response `TranactionPayload` is encoded like
-                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
-                //
-                // Note that `tx_payload_body` is a list:
-                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-                //
-                // This makes the full encoding:
-                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                //
-                // First, we advance the buffer past the type byte
-                data.advance(1);
-
-                // Now, we decode the inner blob transaction:
-                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                let blob_tx = BlobTransaction::decode_inner(&mut data)?;
-                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
-            } else {
-                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
-                // decode it again and advance the buffer on its own.
-                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
-                Ok(PooledTransactionResponse::Transaction(typed_tx))
-            }
-        }
-    }
-
-    /// Returns the inner [TransactionSigned].
-    pub fn into_transaction(self) -> TransactionSigned {
-        match self {
-            Self::Transaction(tx) => tx,
-            Self::BlobTransaction(blob_tx) => blob_tx.transaction,
-        }
-    }
-}
-
-impl Encodable for PooledTransactionResponse {
-    /// Encodes an enveloped post EIP-4844 [PooledTransactionResponse].
-    fn encode(&self, out: &mut dyn bytes::BufMut) {
-        match self {
-            Self::Transaction(tx) => tx.encode(out),
-            Self::BlobTransaction(blob_tx) => {
-                // The inner encoding is used with `with_header` set to true, making the final
-                // encoding:
-                // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-                blob_tx.encode_with_type_inner(out, true);
-            }
-        }
-    }
-
-    fn length(&self) -> usize {
-        match self {
-            Self::Transaction(tx) => tx.length(),
-            Self::BlobTransaction(blob_tx) => {
-                // the encoding uses a header, so we set `with_header` to true
-                blob_tx.payload_len_with_type(true)
-            }
-        }
-    }
-}
-
-impl Decodable for PooledTransactionResponse {
-    /// Decodes an enveloped post EIP-4844 [PooledTransactionResponse].
-    ///
-    /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
-    fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
-        // From the EIP-4844 spec:
-        // Blob transactions have two network representations. During transaction gossip responses
-        // (`PooledTransactions`), the EIP-2718 `TransactionPayload` of the blob transaction is
-        // wrapped to become:
-        //
-        // `rlp([tx_payload_body, blobs, commitments, proofs])`
-        //
-        // This means the full wire encoding is:
-        // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-        //
-        // First, we check whether or not the transaction is a legacy transaction.
-        if buf.is_empty() {
-            return Err(DecodeError::InputTooShort)
-        }
-
-        // keep this around for buffer advancement post-legacy decoding
-        let mut original_encoding = *buf;
-
-        // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
-        // transaction
-        let header = Header::decode(buf)?;
-
-        // Check if the tx is a list
-        if header.list {
-            // decode as legacy transaction
-            let legacy_tx =
-                TransactionSigned::decode_rlp_legacy_transaction(&mut original_encoding)?;
-
-            // advance the buffer based on how far `decode_rlp_legacy_transaction` advanced the
-            // buffer
-            *buf = original_encoding;
-
-            Ok(PooledTransactionResponse::Transaction(legacy_tx))
-        } else {
-            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
-            let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
-
-            if tx_type == EIP4844_TX_TYPE_ID {
-                // Recall that the blob transaction response `TranactionPayload` is encoded like
-                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
-                //
-                // Note that `tx_payload_body` is a list:
-                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-                //
-                // This makes the full encoding:
-                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                //
-                // First, we advance the buffer past the type byte
-                buf.advance(1);
-
-                // Now, we decode the inner blob transaction:
-                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                let blob_tx = BlobTransaction::decode_inner(buf)?;
-                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
-            } else {
-                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
-                // decode it again and advance the buffer on its own.
-                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
-                Ok(PooledTransactionResponse::Transaction(typed_tx))
-            }
-        }
-    }
-}
-
-impl From<TransactionSigned> for PooledTransactionResponse {
-    /// Converts from a [TransactionSigned] to a [PooledTransactionResponse].
-    ///
-    /// NOTE: This will always return a [PooledTransactionResponse::Transaction] variant.
-    fn from(tx: TransactionSigned) -> Self {
-        Self::Transaction(tx)
-    }
-}
-
-/// An error that can occur when validating a [BlobTransaction].
-#[derive(Debug)]
-pub enum BlobTransactionValidationError {
-    /// An error returned by the [kzg] library
-    KZGError(kzg::Error),
-    /// The inner transaction is not a blob transaction
-    NotBlobTransaction(TxType),
-}
-
-impl From<kzg::Error> for BlobTransactionValidationError {
-    fn from(value: kzg::Error) -> Self {
-        Self::KZGError(value)
-    }
-}
-
-/// A response to [`GetPooledTransactions`] that includes blob data, their commitments, and their
-/// corresponding proofs.
-///
-/// This is defined in [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844#networking) as an element
-/// of a [PooledTransactions] response.
-///
-/// NOTE: This contains a [TransactionSigned], which could be a non-4844 transaction type, even
-/// though that would not make sense. This type is meant to be constructed using decoding methods,
-/// which should always construct the [TransactionSigned] with an EIP-4844 transaction.
-#[derive(Clone, Debug, PartialEq, Eq, Default)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub struct BlobTransaction {
-    /// The transaction payload.
-    pub transaction: TransactionSigned,
-    /// The transaction's blob sidecar.
-    pub sidecar: BlobTransactionSidecar,
-}
-
-impl BlobTransaction {
-    /// Verifies that the transaction's blob data, commitments, and proofs are all valid.
-    ///
-    /// Takes as input the [KzgSettings], which should contain the the parameters derived from the
-    /// KZG trusted setup.
-    ///
-    /// This ensures that the blob transaction payload has the same number of blob data elements,
-    /// commitments, and proofs. Each blob data element is verified against its commitment and
-    /// proof.
-    ///
-    /// Returns `false` if any blob KZG proof in the response fails to verify, or if the versioned
-    /// hashes in the transaction do not match the actual commitment versioned hashes.
-    pub fn validate(
-        &self,
-        proof_settings: &KzgSettings,
-    ) -> Result<bool, BlobTransactionValidationError> {
-        let inner_tx = match &self.transaction.transaction {
-            Transaction::Eip4844(blob_tx) => blob_tx,
-            non_blob_tx => {
-                return Err(BlobTransactionValidationError::NotBlobTransaction(
-                    non_blob_tx.tx_type(),
-                ))
-            }
-        };
-
-        // Ensure the versioned hashes and commitments have the same length
-        if inner_tx.blob_versioned_hashes.len() != self.sidecar.commitments.len() {
-            return Err(kzg::Error::MismatchLength(format!(
-                "There are {} versioned commitment hashes and {} commitments",
-                inner_tx.blob_versioned_hashes.len(),
-                self.sidecar.commitments.len()
-            ))
-            .into())
-        }
-
-        // zip and iterate, calculating versioned hashes
-        for (versioned_hash, commitment) in
-            inner_tx.blob_versioned_hashes.iter().zip(self.sidecar.commitments.iter())
-        {
-            // convert to KzgCommitment
-            let commitment = KzgCommitment::from(*commitment.deref());
-
-            // Calculate the versioned hash
-            //
-            // TODO: should this method distinguish the type of validation failure? For example
-            // whether a certain versioned hash does not match, or whether the blob proof
-            // validation failed?
-            let calculated_versioned_hash = kzg_to_versioned_hash(commitment);
-            if *versioned_hash != calculated_versioned_hash {
-                return Ok(false)
-            }
-        }
-
-        // Verify as a batch
-        KzgProof::verify_blob_kzg_proof_batch(
-            self.sidecar.blobs.as_slice(),
-            self.sidecar.commitments.as_slice(),
-            self.sidecar.proofs.as_slice(),
-            proof_settings,
-        )
-        .map_err(Into::into)
-    }
-
-    /// Splits the [BlobTransaction] into its [TransactionSigned] and [BlobTransactionSidecar]
-    /// components.
-    pub fn into_parts(self) -> (TransactionSigned, BlobTransactionSidecar) {
-        (self.transaction, self.sidecar)
-    }
-
-    /// Encodes the [BlobTransaction] fields as RLP, with a tx type. If `with_header` is `false`,
-    /// the following will be encoded:
-    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
-    ///
-    /// If `with_header` is `true`, the following will be encoded:
-    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-    ///
-    /// NOTE: The header will be a byte string header, not a list header.
-    pub fn encode_with_type_inner(&self, out: &mut dyn bytes::BufMut, with_header: bool) {
-        // Calculate the length of:
-        // `tx_type || rlp([transaction_payload_body, blobs, commitments, proofs])`
-        //
-        // to construct and encode the string header
-        if with_header {
-            Header {
-                list: false,
-                // add one for the tx type
-                payload_length: 1 + self.payload_len(),
-            }
-            .encode(out);
-        }
-
-        out.put_u8(EIP4844_TX_TYPE_ID);
-
-        // Now we encode the inner blob transaction:
-        self.encode_inner(out);
-    }
-
-    /// Encodes the [BlobTransaction] fields as RLP, with the following format:
-    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
-    ///
-    /// where `transaction_payload_body` is a list:
-    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-    ///
-    /// Note: this should be used only when implementing other RLP encoding methods, and does not
-    /// represent the full RLP encoding of the blob transaction.
-    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
-        // First we construct both required list headers.
-        //
-        // The `transaction_payload_body` length is the length of the fields, plus the length of
-        // its list header.
-        let tx_header = Header {
-            list: true,
-            payload_length: self.transaction.fields_len() +
-                self.transaction.signature.payload_len(),
-        };
-
-        let tx_length = tx_header.length() + tx_header.payload_length;
-
-        // The payload length is the length of the `tranascation_payload_body` list, plus the
-        // length of the blobs, commitments, and proofs.
-        let payload_length = tx_length + self.sidecar.fields_len();
-
-        // First we use the payload len to construct the first list header
-        let blob_tx_header = Header { list: true, payload_length };
-
-        // Encode the blob tx header first
-        blob_tx_header.encode(out);
-
-        // Encode the inner tx list header, then its fields
-        tx_header.encode(out);
-        self.transaction.encode_fields(out);
-
-        // Encode the blobs, commitments, and proofs
-        self.sidecar.encode_inner(out);
-    }
-
-    /// Ouputs the length of the RLP encoding of the blob transaction, including the tx type byte,
-    /// optionally including the length of a wrapping string header. If `with_header` is `false`,
-    /// the length of the following will be calculated:
-    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
-    ///
-    /// If `with_header` is `true`, the length of the following will be calculated:
-    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-    pub fn payload_len_with_type(&self, with_header: bool) -> usize {
-        if with_header {
-            // Construct a header and use that to calculate the total length
-            let wrapped_header = Header {
-                list: false,
-                // add one for the tx type byte
-                payload_length: 1 + self.payload_len(),
-            };
-
-            // The total length is now the length of the header plus the length of the payload
-            // (which includes the tx type byte)
-            wrapped_header.length() + wrapped_header.payload_length
-        } else {
-            // Just add the length of the tx type to the payload length
-            1 + self.payload_len()
-        }
-    }
-
-    /// Outputs the length of the RLP encoding of the blob transaction with the following format:
-    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
-    ///
-    /// where `transaction_payload_body` is a list:
-    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-    ///
-    /// Note: this should be used only when implementing other RLP encoding length methods, and
-    /// does not represent the full RLP encoding of the blob transaction.
-    pub fn payload_len(&self) -> usize {
-        // The `transaction_payload_body` length is the length of the fields, plus the length of
-        // its list header.
-        let tx_header = Header {
-            list: true,
-            payload_length: self.transaction.fields_len() +
-                self.transaction.signature.payload_len(),
-        };
-
-        let tx_length = tx_header.length() + tx_header.payload_length;
-
-        // The payload length is the length of the `tranascation_payload_body` list, plus the
-        // length of the blobs, commitments, and proofs.
-        tx_length + self.sidecar.fields_len()
-    }
-
-    /// Decodes a [BlobTransaction] from RLP. This expects the encoding to be:
-    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
-    ///
-    /// where `transaction_payload_body` is a list:
-    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-    ///
-    /// Note: this should be used only when implementing other RLP decoding methods, and does not
-    /// represent the full RLP decoding of the [PooledTransactionResponse] type.
-    pub fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
-        // decode the _first_ list header for the rest of the transaction
-        let header = Header::decode(data)?;
-        if !header.list {
-            return Err(DecodeError::Custom("PooledTransactions blob tx must be encoded as a list"))
-        }
-
-        // Now we need to decode the inner 4844 transaction and its signature:
-        //
-        // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-        let header = Header::decode(data)?;
-        if !header.list {
-            return Err(DecodeError::Custom(
-                "PooledTransactions inner blob tx must be encoded as a list",
-            ))
-        }
-
-        // inner transaction
-        let transaction = Transaction::Eip4844(TxEip4844::decode_inner(data)?);
-
-        // signature
-        let signature = Signature::decode(data)?;
-
-        // construct the tx now that we've decoded the fields in order
-        let tx_no_hash = TransactionSignedNoHash { transaction, signature };
-
-        // All that's left are the blobs, commitments, and proofs
-        let sidecar = BlobTransactionSidecar::decode_inner(data)?;
-
-        // # Calculating the hash
-        //
-        // The full encoding of the [PooledTransaction] response is:
-        // `tx_type (0x03) || rlp([tx_payload_body, blobs, commitments, proofs])`
-        //
-        // The transaction hash however, is:
-        // `keccak256(tx_type (0x03) || rlp(tx_payload_body))`
-        //
-        // Note that this is `tx_payload_body`, not `[tx_payload_body]`, which would be
-        // `[[chain_id, nonce, max_priority_fee_per_gas, ...]]`, i.e. a list within a list.
-        //
-        // Because the pooled transaction encoding is different than the hash encoding for
-        // EIP-4844 transactions, we do not use the original buffer to calculate the hash.
-        //
-        // Instead, we use [TransactionSignedNoHash] which will encode the transaction internally.
-        let signed_tx = tx_no_hash.with_hash();
-
-        Ok(Self { transaction: signed_tx, sidecar })
-    }
-}
-
-#[cfg(any(test, feature = "arbitrary"))]
-impl<'a> arbitrary::Arbitrary<'a> for BlobTransaction {
-    fn arbitrary(u: &mut arbitrary::Unstructured<'a>) -> arbitrary::Result<Self> {
-        let mut arr = [0u8; BYTES_PER_BLOB];
-        let blobs: Vec<Blob> = (0..u.int_in_range(1..=16)?)
-            .map(|_| {
-                arr = arbitrary::Arbitrary::arbitrary(u).unwrap();
-
-                // Ensure that the blob is canonical by ensuring that
-                // each field element contained in the blob is < BLS_MODULUS
-                for i in 0..(FIELD_ELEMENTS_PER_BLOB as usize) {
-                    arr[i * BYTES_PER_FIELD_ELEMENT] = 0;
-                }
-                Blob::from(arr)
-            })
-            .collect();
-
-        Ok(generate_blob_transaction(blobs, TransactionSigned::arbitrary(u)?))
-    }
-}
-
-#[cfg(any(test, feature = "arbitrary"))]
-impl proptest::arbitrary::Arbitrary for BlobTransaction {
-    type Parameters = ParamsFor<String>;
-    fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy {
-        (
-            proptest_vec(proptest_vec(proptest_any::<u8>(), BYTES_PER_BLOB), 1..=5),
-            proptest_any::<TransactionSigned>(),
-        )
-            .prop_map(move |(blobs, tx)| {
-                let blobs = blobs
-                    .into_iter()
-                    .map(|mut blob| {
-                        let mut arr = [0u8; BYTES_PER_BLOB];
-
-                        // Ensure that the blob is canonical by ensuring that
-                        // each field element contained in the blob is < BLS_MODULUS
-                        for i in 0..(FIELD_ELEMENTS_PER_BLOB as usize) {
-                            blob[i * BYTES_PER_FIELD_ELEMENT] = 0;
-                        }
-
-                        arr.copy_from_slice(blob.as_slice());
-                        arr.into()
-                    })
-                    .collect();
-
-                generate_blob_transaction(blobs, tx)
-            })
-            .boxed()
-    }
-
-    type Strategy = BoxedStrategy<BlobTransaction>;
-}
-
-#[cfg(any(test, feature = "arbitrary"))]
-fn generate_blob_transaction(blobs: Vec<Blob>, transaction: TransactionSigned) -> BlobTransaction {
-    let kzg_settings = KZG_TRUSTED_SETUP.clone();
-
-    let commitments: Vec<Bytes48> = blobs
-        .iter()
-        .map(|blob| KzgCommitment::blob_to_kzg_commitment(blob.clone(), &kzg_settings).unwrap())
-        .map(|commitment| commitment.to_bytes())
-        .collect();
-
-    let proofs: Vec<Bytes48> = blobs
-        .iter()
-        .zip(commitments.iter())
-        .map(|(blob, commitment)| {
-            KzgProof::compute_blob_kzg_proof(blob.clone(), *commitment, &kzg_settings).unwrap()
-        })
-        .map(|proof| proof.to_bytes())
-        .collect();
-
-    let sidecar = BlobTransactionSidecar { blobs, commitments, proofs };
-
-    BlobTransaction { transaction, sidecar }
-}
 #[cfg(test)]
 mod test {
     use crate::{message::RequestPair, GetPooledTransactions, PooledTransactions};
diff --git a/crates/net/eth-wire/tests/pooled_transactions.rs b/crates/net/eth-wire/tests/pooled_transactions.rs
index 5c5318ebcb0..ef1bcebdb00 100644
--- a/crates/net/eth-wire/tests/pooled_transactions.rs
+++ b/crates/net/eth-wire/tests/pooled_transactions.rs
@@ -1,6 +1,6 @@
 //! Decoding tests for [`PooledTransactions`]
-use reth_eth_wire::{PooledTransactionResponse, PooledTransactions};
-use reth_primitives::hex;
+use reth_eth_wire::PooledTransactions;
+use reth_primitives::{hex, PooledTransactionResponse};
 use reth_rlp::Decodable;
 use std::{fs, path::PathBuf};
 
diff --git a/crates/net/network/src/message.rs b/crates/net/network/src/message.rs
index 0d20d38c255..2dbc4c50da5 100644
--- a/crates/net/network/src/message.rs
+++ b/crates/net/network/src/message.rs
@@ -7,11 +7,13 @@ use futures::FutureExt;
 use reth_eth_wire::{
     capability::RawCapabilityMessage, message::RequestPair, BlockBodies, BlockHeaders, EthMessage,
     GetBlockBodies, GetBlockHeaders, GetNodeData, GetPooledTransactions, GetReceipts, NewBlock,
-    NewBlockHashes, NewPooledTransactionHashes, NodeData, PooledTransactionResponse,
-    PooledTransactions, Receipts, SharedTransactions, Transactions,
+    NewBlockHashes, NewPooledTransactionHashes, NodeData, PooledTransactions, Receipts,
+    SharedTransactions, Transactions,
 };
 use reth_interfaces::p2p::error::{RequestError, RequestResult};
-use reth_primitives::{BlockBody, Bytes, Header, PeerId, ReceiptWithBloom, H256};
+use reth_primitives::{
+    BlockBody, Bytes, Header, PeerId, PooledTransactionResponse, ReceiptWithBloom, H256,
+};
 use std::{
     fmt,
     sync::Arc,
diff --git a/crates/primitives/src/lib.rs b/crates/primitives/src/lib.rs
index feeaa57a321..45bb0962fd2 100644
--- a/crates/primitives/src/lib.rs
+++ b/crates/primitives/src/lib.rs
@@ -90,11 +90,12 @@ pub use serde_helper::JsonU256;
 pub use storage::StorageEntry;
 pub use transaction::{
     util::secp256k1::{public_key_to_address, recover_signer, sign_message},
-    AccessList, AccessListItem, AccessListWithGasUsed, BlobTransactionSidecar,
-    FromRecoveredTransaction, IntoRecoveredTransaction, InvalidTransactionError, Signature,
-    Transaction, TransactionKind, TransactionMeta, TransactionSigned, TransactionSignedEcRecovered,
-    TransactionSignedNoHash, TxEip1559, TxEip2930, TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID,
-    EIP2930_TX_TYPE_ID, EIP4844_TX_TYPE_ID, LEGACY_TX_TYPE_ID,
+    AccessList, AccessListItem, AccessListWithGasUsed, BlobTransaction, BlobTransactionSidecar,
+    FromRecoveredTransaction, IntoRecoveredTransaction, InvalidTransactionError,
+    PooledTransactionResponse, Signature, Transaction, TransactionKind, TransactionMeta,
+    TransactionSigned, TransactionSignedEcRecovered, TransactionSignedNoHash, TxEip1559, TxEip2930,
+    TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID, EIP2930_TX_TYPE_ID, EIP4844_TX_TYPE_ID,
+    LEGACY_TX_TYPE_ID,
 };
 pub use withdrawal::Withdrawal;
 
diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index d1bee692573..94af01f8c9f 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -1,10 +1,17 @@
 use super::access_list::AccessList;
-use crate::{constants::eip4844::DATA_GAS_PER_BLOB, Bytes, ChainId, TransactionKind, H256};
-use c_kzg::{Blob, Bytes48, BYTES_PER_BLOB, BYTES_PER_COMMITMENT, BYTES_PER_PROOF};
+use crate::{
+    constants::eip4844::DATA_GAS_PER_BLOB,
+    kzg::{
+        self, Blob, Bytes48, KzgCommitment, KzgProof, KzgSettings, BYTES_PER_BLOB,
+        BYTES_PER_COMMITMENT, BYTES_PER_FIELD_ELEMENT, BYTES_PER_PROOF, FIELD_ELEMENTS_PER_BLOB,
+    },
+    kzg_to_versioned_hash, Bytes, ChainId, Signature, Transaction, TransactionKind,
+    TransactionSigned, TransactionSignedNoHash, TxType, EIP4844_TX_TYPE_ID, H256,
+};
 use reth_codecs::{main_codec, Compact};
-use reth_rlp::{Decodable, DecodeError, Encodable};
+use reth_rlp::{Decodable, DecodeError, Encodable, Header};
 use serde::{Deserialize, Serialize};
-use std::mem;
+use std::{mem, ops::Deref};
 
 /// [EIP-4844 Blob Transaction](https://eips.ethereum.org/EIPS/eip-4844#blob-transaction)
 ///
@@ -152,6 +159,281 @@ impl TxEip4844 {
     }
 }
 
+/// An error that can occur when validating a [BlobTransaction].
+#[derive(Debug)]
+pub enum BlobTransactionValidationError {
+    /// An error returned by the [kzg] library
+    KZGError(kzg::Error),
+    /// The inner transaction is not a blob transaction
+    NotBlobTransaction(TxType),
+}
+
+impl From<kzg::Error> for BlobTransactionValidationError {
+    fn from(value: kzg::Error) -> Self {
+        Self::KZGError(value)
+    }
+}
+
+/// A response to [`GetPooledTransactions`] that includes blob data, their commitments, and their
+/// corresponding proofs.
+///
+/// This is defined in [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844#networking) as an element
+/// of a [PooledTransactions] response.
+///
+/// NOTE: This contains a [TransactionSigned], which could be a non-4844 transaction type, even
+/// though that would not make sense. This type is meant to be constructed using decoding methods,
+/// which should always construct the [TransactionSigned] with an EIP-4844 transaction.
+#[derive(Clone, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
+pub struct BlobTransaction {
+    /// The transaction payload.
+    pub transaction: TransactionSigned,
+    /// The transaction's blob sidecar.
+    pub sidecar: BlobTransactionSidecar,
+}
+
+impl BlobTransaction {
+    /// Verifies that the transaction's blob data, commitments, and proofs are all valid.
+    ///
+    /// Takes as input the [KzgSettings], which should contain the the parameters derived from the
+    /// KZG trusted setup.
+    ///
+    /// This ensures that the blob transaction payload has the same number of blob data elements,
+    /// commitments, and proofs. Each blob data element is verified against its commitment and
+    /// proof.
+    ///
+    /// Returns `false` if any blob KZG proof in the response fails to verify, or if the versioned
+    /// hashes in the transaction do not match the actual commitment versioned hashes.
+    pub fn validate(
+        &self,
+        proof_settings: &KzgSettings,
+    ) -> Result<bool, BlobTransactionValidationError> {
+        let inner_tx = match &self.transaction.transaction {
+            Transaction::Eip4844(blob_tx) => blob_tx,
+            non_blob_tx => {
+                return Err(BlobTransactionValidationError::NotBlobTransaction(
+                    non_blob_tx.tx_type(),
+                ))
+            }
+        };
+
+        // Ensure the versioned hashes and commitments have the same length
+        if inner_tx.blob_versioned_hashes.len() != self.sidecar.commitments.len() {
+            return Err(kzg::Error::MismatchLength(format!(
+                "There are {} versioned commitment hashes and {} commitments",
+                inner_tx.blob_versioned_hashes.len(),
+                self.sidecar.commitments.len()
+            ))
+            .into())
+        }
+
+        // zip and iterate, calculating versioned hashes
+        for (versioned_hash, commitment) in
+            inner_tx.blob_versioned_hashes.iter().zip(self.sidecar.commitments.iter())
+        {
+            // convert to KzgCommitment
+            let commitment = KzgCommitment::from(*commitment.deref());
+
+            // Calculate the versioned hash
+            //
+            // TODO: should this method distinguish the type of validation failure? For example
+            // whether a certain versioned hash does not match, or whether the blob proof
+            // validation failed?
+            let calculated_versioned_hash = kzg_to_versioned_hash(commitment);
+            if *versioned_hash != calculated_versioned_hash {
+                return Ok(false)
+            }
+        }
+
+        // Verify as a batch
+        KzgProof::verify_blob_kzg_proof_batch(
+            self.sidecar.blobs.as_slice(),
+            self.sidecar.commitments.as_slice(),
+            self.sidecar.proofs.as_slice(),
+            proof_settings,
+        )
+        .map_err(Into::into)
+    }
+
+    /// Splits the [BlobTransaction] into its [TransactionSigned] and [BlobTransactionSidecar]
+    /// components.
+    pub fn into_parts(self) -> (TransactionSigned, BlobTransactionSidecar) {
+        (self.transaction, self.sidecar)
+    }
+
+    /// Encodes the [BlobTransaction] fields as RLP, with a tx type. If `with_header` is `false`,
+    /// the following will be encoded:
+    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// If `with_header` is `true`, the following will be encoded:
+    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+    ///
+    /// NOTE: The header will be a byte string header, not a list header.
+    pub fn encode_with_type_inner(&self, out: &mut dyn bytes::BufMut, with_header: bool) {
+        // Calculate the length of:
+        // `tx_type || rlp([transaction_payload_body, blobs, commitments, proofs])`
+        //
+        // to construct and encode the string header
+        if with_header {
+            Header {
+                list: false,
+                // add one for the tx type
+                payload_length: 1 + self.payload_len(),
+            }
+            .encode(out);
+        }
+
+        out.put_u8(EIP4844_TX_TYPE_ID);
+
+        // Now we encode the inner blob transaction:
+        self.encode_inner(out);
+    }
+
+    /// Encodes the [BlobTransaction] fields as RLP, with the following format:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP encoding methods, and does not
+    /// represent the full RLP encoding of the blob transaction.
+    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
+        // First we construct both required list headers.
+        //
+        // The `transaction_payload_body` length is the length of the fields, plus the length of
+        // its list header.
+        let tx_header = Header {
+            list: true,
+            payload_length: self.transaction.fields_len() +
+                self.transaction.signature.payload_len(),
+        };
+
+        let tx_length = tx_header.length() + tx_header.payload_length;
+
+        // The payload length is the length of the `tranascation_payload_body` list, plus the
+        // length of the blobs, commitments, and proofs.
+        let payload_length = tx_length + self.sidecar.fields_len();
+
+        // First we use the payload len to construct the first list header
+        let blob_tx_header = Header { list: true, payload_length };
+
+        // Encode the blob tx header first
+        blob_tx_header.encode(out);
+
+        // Encode the inner tx list header, then its fields
+        tx_header.encode(out);
+        self.transaction.encode_fields(out);
+
+        // Encode the blobs, commitments, and proofs
+        self.sidecar.encode_inner(out);
+    }
+
+    /// Ouputs the length of the RLP encoding of the blob transaction, including the tx type byte,
+    /// optionally including the length of a wrapping string header. If `with_header` is `false`,
+    /// the length of the following will be calculated:
+    /// `tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// If `with_header` is `true`, the length of the following will be calculated:
+    /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+    pub fn payload_len_with_type(&self, with_header: bool) -> usize {
+        if with_header {
+            // Construct a header and use that to calculate the total length
+            let wrapped_header = Header {
+                list: false,
+                // add one for the tx type byte
+                payload_length: 1 + self.payload_len(),
+            };
+
+            // The total length is now the length of the header plus the length of the payload
+            // (which includes the tx type byte)
+            wrapped_header.length() + wrapped_header.payload_length
+        } else {
+            // Just add the length of the tx type to the payload length
+            1 + self.payload_len()
+        }
+    }
+
+    /// Outputs the length of the RLP encoding of the blob transaction with the following format:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP encoding length methods, and
+    /// does not represent the full RLP encoding of the blob transaction.
+    pub fn payload_len(&self) -> usize {
+        // The `transaction_payload_body` length is the length of the fields, plus the length of
+        // its list header.
+        let tx_header = Header {
+            list: true,
+            payload_length: self.transaction.fields_len() +
+                self.transaction.signature.payload_len(),
+        };
+
+        let tx_length = tx_header.length() + tx_header.payload_length;
+
+        // The payload length is the length of the `tranascation_payload_body` list, plus the
+        // length of the blobs, commitments, and proofs.
+        tx_length + self.sidecar.fields_len()
+    }
+
+    /// Decodes a [BlobTransaction] from RLP. This expects the encoding to be:
+    /// `rlp([transaction_payload_body, blobs, commitments, proofs])`
+    ///
+    /// where `transaction_payload_body` is a list:
+    /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+    ///
+    /// Note: this should be used only when implementing other RLP decoding methods, and does not
+    /// represent the full RLP decoding of the [PooledTransactionResponse] type.
+    pub fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
+        // decode the _first_ list header for the rest of the transaction
+        let header = Header::decode(data)?;
+        if !header.list {
+            return Err(DecodeError::Custom("PooledTransactions blob tx must be encoded as a list"))
+        }
+
+        // Now we need to decode the inner 4844 transaction and its signature:
+        //
+        // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+        let header = Header::decode(data)?;
+        if !header.list {
+            return Err(DecodeError::Custom(
+                "PooledTransactions inner blob tx must be encoded as a list",
+            ))
+        }
+
+        // inner transaction
+        let transaction = Transaction::Eip4844(TxEip4844::decode_inner(data)?);
+
+        // signature
+        let signature = Signature::decode(data)?;
+
+        // construct the tx now that we've decoded the fields in order
+        let tx_no_hash = TransactionSignedNoHash { transaction, signature };
+
+        // All that's left are the blobs, commitments, and proofs
+        let sidecar = BlobTransactionSidecar::decode_inner(data)?;
+
+        // # Calculating the hash
+        //
+        // The full encoding of the [PooledTransaction] response is:
+        // `tx_type (0x03) || rlp([tx_payload_body, blobs, commitments, proofs])`
+        //
+        // The transaction hash however, is:
+        // `keccak256(tx_type (0x03) || rlp(tx_payload_body))`
+        //
+        // Note that this is `tx_payload_body`, not `[tx_payload_body]`, which would be
+        // `[[chain_id, nonce, max_priority_fee_per_gas, ...]]`, i.e. a list within a list.
+        //
+        // Because the pooled transaction encoding is different than the hash encoding for
+        // EIP-4844 transactions, we do not use the original buffer to calculate the hash.
+        //
+        // Instead, we use [TransactionSignedNoHash] which will encode the transaction internally.
+        let signed_tx = tx_no_hash.with_hash();
+
+        Ok(Self { transaction: signed_tx, sidecar })
+    }
+}
+
 /// This represents a set of blobs, and its corresponding commitments and proofs.
 #[derive(Clone, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
 pub struct BlobTransactionSidecar {
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index b96ebdb0d71..1759ed10c5a 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -22,7 +22,7 @@ pub use tx_type::{
 
 pub use eip1559::TxEip1559;
 pub use eip2930::TxEip2930;
-pub use eip4844::{BlobTransactionSidecar, TxEip4844};
+pub use eip4844::{BlobTransaction, BlobTransactionSidecar, TxEip4844};
 pub use legacy::TxLegacy;
 
 mod access_list;
@@ -1320,6 +1320,180 @@ impl IntoRecoveredTransaction for TransactionSignedEcRecovered {
     }
 }
 
+/// A response to [`GetPooledTransactions`]. This can include either a blob transaction, or a
+/// non-4844 signed transaction.
+// TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
+// replaced with `TransactionSigned` in `PooledTransactions`
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum PooledTransactionResponse {
+    /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
+    BlobTransaction(BlobTransaction),
+    /// A non-4844 signed transaction.
+    Transaction(TransactionSigned),
+}
+
+impl PooledTransactionResponse {
+    /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
+    ///
+    /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
+    /// For legacy transactions, the format is encoded as: `rlp(tx)`
+    /// For EIP-2718 typed transaction, the format is encoded as the type of the transaction
+    /// followed by the rlp of the transaction: `type` + `rlp(tx)`
+    ///
+    /// For encoded EIP-4844 transactions, the blob sidecar _must_ be included.
+    pub fn decode_enveloped(tx: Bytes) -> Result<Self, DecodeError> {
+        let mut data = tx.as_ref();
+
+        if data.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // Check if the tx is a list - tx types are less than EMPTY_LIST_CODE (0xc0)
+        if data[0] >= EMPTY_LIST_CODE {
+            // decode as legacy transaction
+            Ok(Self::Transaction(TransactionSigned::decode_rlp_legacy_transaction(&mut data)?))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                data.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(&mut data)?;
+                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
+                Ok(PooledTransactionResponse::Transaction(typed_tx))
+            }
+        }
+    }
+
+    /// Returns the inner [TransactionSigned].
+    pub fn into_transaction(self) -> TransactionSigned {
+        match self {
+            Self::Transaction(tx) => tx,
+            Self::BlobTransaction(blob_tx) => blob_tx.transaction,
+        }
+    }
+}
+
+impl Encodable for PooledTransactionResponse {
+    /// Encodes an enveloped post EIP-4844 [PooledTransactionResponse].
+    fn encode(&self, out: &mut dyn bytes::BufMut) {
+        match self {
+            Self::Transaction(tx) => tx.encode(out),
+            Self::BlobTransaction(blob_tx) => {
+                // The inner encoding is used with `with_header` set to true, making the final
+                // encoding:
+                // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+                blob_tx.encode_with_type_inner(out, true);
+            }
+        }
+    }
+
+    fn length(&self) -> usize {
+        match self {
+            Self::Transaction(tx) => tx.length(),
+            Self::BlobTransaction(blob_tx) => {
+                // the encoding uses a header, so we set `with_header` to true
+                blob_tx.payload_len_with_type(true)
+            }
+        }
+    }
+}
+
+impl Decodable for PooledTransactionResponse {
+    /// Decodes an enveloped post EIP-4844 [PooledTransactionResponse].
+    ///
+    /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
+    fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        // From the EIP-4844 spec:
+        // Blob transactions have two network representations. During transaction gossip responses
+        // (`PooledTransactions`), the EIP-2718 `TransactionPayload` of the blob transaction is
+        // wrapped to become:
+        //
+        // `rlp([tx_payload_body, blobs, commitments, proofs])`
+        //
+        // This means the full wire encoding is:
+        // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+        //
+        // First, we check whether or not the transaction is a legacy transaction.
+        if buf.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // keep this around for buffer advancement post-legacy decoding
+        let mut original_encoding = *buf;
+
+        // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
+        // transaction
+        let header = Header::decode(buf)?;
+
+        // Check if the tx is a list
+        if header.list {
+            // decode as legacy transaction
+            let legacy_tx =
+                TransactionSigned::decode_rlp_legacy_transaction(&mut original_encoding)?;
+
+            // advance the buffer based on how far `decode_rlp_legacy_transaction` advanced the
+            // buffer
+            *buf = original_encoding;
+
+            Ok(PooledTransactionResponse::Transaction(legacy_tx))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                buf.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(buf)?;
+                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
+                Ok(PooledTransactionResponse::Transaction(typed_tx))
+            }
+        }
+    }
+}
+
+impl From<TransactionSigned> for PooledTransactionResponse {
+    /// Converts from a [TransactionSigned] to a [PooledTransactionResponse].
+    ///
+    /// NOTE: This will always return a [PooledTransactionResponse::Transaction] variant.
+    fn from(tx: TransactionSigned) -> Self {
+        Self::Transaction(tx)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::{

From 10caec8fbbb4c103e1f8f4a4c922ff94612a14cf Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 12:31:25 -0400
Subject: [PATCH 14/19] rename to PooledTransactionsElement

---
 crates/net/eth-wire/src/types/transactions.rs |  4 ++--
 .../net/eth-wire/tests/pooled_transactions.rs |  4 ++--
 crates/net/network/src/message.rs             |  4 ++--
 crates/primitives/src/lib.rs                  |  2 +-
 crates/primitives/src/transaction/mod.rs      | 20 +++++++++----------
 5 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index e736262e4a7..355f95af43e 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -5,7 +5,7 @@ use bytes::{Buf, Bytes};
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{
     kzg::{self, KzgCommitment, KzgProof, KzgSettings},
-    kzg_to_versioned_hash, BlobTransactionSidecar, PooledTransactionResponse, Signature,
+    kzg_to_versioned_hash, BlobTransactionSidecar, PooledTransactionsElement, Signature,
     Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID,
     H256,
 };
@@ -60,7 +60,7 @@ where
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PooledTransactions(
     /// The transaction bodies, each of which should correspond to a requested hash.
-    pub Vec<PooledTransactionResponse>,
+    pub Vec<PooledTransactionsElement>,
 );
 
 impl From<Vec<TransactionSigned>> for PooledTransactions {
diff --git a/crates/net/eth-wire/tests/pooled_transactions.rs b/crates/net/eth-wire/tests/pooled_transactions.rs
index ef1bcebdb00..66dbdd00198 100644
--- a/crates/net/eth-wire/tests/pooled_transactions.rs
+++ b/crates/net/eth-wire/tests/pooled_transactions.rs
@@ -1,6 +1,6 @@
 //! Decoding tests for [`PooledTransactions`]
 use reth_eth_wire::PooledTransactions;
-use reth_primitives::{hex, PooledTransactionResponse};
+use reth_primitives::{hex, PooledTransactionsElement};
 use reth_rlp::Decodable;
 use std::{fs, path::PathBuf};
 
@@ -19,5 +19,5 @@ fn decode_blob_transaction_data() {
         PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("testdata/blob_transaction");
     let data = fs::read_to_string(network_data_path).expect("Unable to read file");
     let hex_data = hex::decode(data.trim()).unwrap();
-    let _txs = PooledTransactionResponse::decode(&mut &hex_data[..]).unwrap();
+    let _txs = PooledTransactionsElement::decode(&mut &hex_data[..]).unwrap();
 }
diff --git a/crates/net/network/src/message.rs b/crates/net/network/src/message.rs
index 2dbc4c50da5..12b4c4980a6 100644
--- a/crates/net/network/src/message.rs
+++ b/crates/net/network/src/message.rs
@@ -12,7 +12,7 @@ use reth_eth_wire::{
 };
 use reth_interfaces::p2p::error::{RequestError, RequestResult};
 use reth_primitives::{
-    BlockBody, Bytes, Header, PeerId, PooledTransactionResponse, ReceiptWithBloom, H256,
+    BlockBody, Bytes, Header, PeerId, PooledTransactionsElement, ReceiptWithBloom, H256,
 };
 use std::{
     fmt,
@@ -199,7 +199,7 @@ impl PeerResponse {
 pub enum PeerResponseResult {
     BlockHeaders(RequestResult<Vec<Header>>),
     BlockBodies(RequestResult<Vec<BlockBody>>),
-    PooledTransactions(RequestResult<Vec<PooledTransactionResponse>>),
+    PooledTransactions(RequestResult<Vec<PooledTransactionsElement>>),
     NodeData(RequestResult<Vec<Bytes>>),
     Receipts(RequestResult<Vec<Vec<ReceiptWithBloom>>>),
 }
diff --git a/crates/primitives/src/lib.rs b/crates/primitives/src/lib.rs
index 45bb0962fd2..8d0ffb02361 100644
--- a/crates/primitives/src/lib.rs
+++ b/crates/primitives/src/lib.rs
@@ -92,7 +92,7 @@ pub use transaction::{
     util::secp256k1::{public_key_to_address, recover_signer, sign_message},
     AccessList, AccessListItem, AccessListWithGasUsed, BlobTransaction, BlobTransactionSidecar,
     FromRecoveredTransaction, IntoRecoveredTransaction, InvalidTransactionError,
-    PooledTransactionResponse, Signature, Transaction, TransactionKind, TransactionMeta,
+    PooledTransactionsElement, Signature, Transaction, TransactionKind, TransactionMeta,
     TransactionSigned, TransactionSignedEcRecovered, TransactionSignedNoHash, TxEip1559, TxEip2930,
     TxEip4844, TxLegacy, TxType, EIP1559_TX_TYPE_ID, EIP2930_TX_TYPE_ID, EIP4844_TX_TYPE_ID,
     LEGACY_TX_TYPE_ID,
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 1759ed10c5a..95096d5d207 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -1325,14 +1325,14 @@ impl IntoRecoveredTransaction for TransactionSignedEcRecovered {
 // TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
 // replaced with `TransactionSigned` in `PooledTransactions`
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
-pub enum PooledTransactionResponse {
+pub enum PooledTransactionsElement {
     /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
     BlobTransaction(BlobTransaction),
     /// A non-4844 signed transaction.
     Transaction(TransactionSigned),
 }
 
-impl PooledTransactionResponse {
+impl PooledTransactionsElement {
     /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
     ///
     /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
@@ -1372,12 +1372,12 @@ impl PooledTransactionResponse {
                 // Now, we decode the inner blob transaction:
                 // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
                 let blob_tx = BlobTransaction::decode_inner(&mut data)?;
-                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
             } else {
                 // DO NOT advance the buffer for the type, since we want the enveloped decoding to
                 // decode it again and advance the buffer on its own.
                 let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
-                Ok(PooledTransactionResponse::Transaction(typed_tx))
+                Ok(PooledTransactionsElement::Transaction(typed_tx))
             }
         }
     }
@@ -1391,7 +1391,7 @@ impl PooledTransactionResponse {
     }
 }
 
-impl Encodable for PooledTransactionResponse {
+impl Encodable for PooledTransactionsElement {
     /// Encodes an enveloped post EIP-4844 [PooledTransactionResponse].
     fn encode(&self, out: &mut dyn bytes::BufMut) {
         match self {
@@ -1416,7 +1416,7 @@ impl Encodable for PooledTransactionResponse {
     }
 }
 
-impl Decodable for PooledTransactionResponse {
+impl Decodable for PooledTransactionsElement {
     /// Decodes an enveloped post EIP-4844 [PooledTransactionResponse].
     ///
     /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
@@ -1453,7 +1453,7 @@ impl Decodable for PooledTransactionResponse {
             // buffer
             *buf = original_encoding;
 
-            Ok(PooledTransactionResponse::Transaction(legacy_tx))
+            Ok(PooledTransactionsElement::Transaction(legacy_tx))
         } else {
             // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
             let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
@@ -1474,18 +1474,18 @@ impl Decodable for PooledTransactionResponse {
                 // Now, we decode the inner blob transaction:
                 // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
                 let blob_tx = BlobTransaction::decode_inner(buf)?;
-                Ok(PooledTransactionResponse::BlobTransaction(blob_tx))
+                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
             } else {
                 // DO NOT advance the buffer for the type, since we want the enveloped decoding to
                 // decode it again and advance the buffer on its own.
                 let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
-                Ok(PooledTransactionResponse::Transaction(typed_tx))
+                Ok(PooledTransactionsElement::Transaction(typed_tx))
             }
         }
     }
 }
 
-impl From<TransactionSigned> for PooledTransactionResponse {
+impl From<TransactionSigned> for PooledTransactionsElement {
     /// Converts from a [TransactionSigned] to a [PooledTransactionResponse].
     ///
     /// NOTE: This will always return a [PooledTransactionResponse::Transaction] variant.

From e77972d34da4e881b64884ad7a4ca1e288852454 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 12:37:20 -0400
Subject: [PATCH 15/19] fix doc lint

---
 crates/primitives/src/transaction/eip4844.rs | 18 +++++++++---------
 crates/primitives/src/transaction/mod.rs     |  8 ++++----
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 94af01f8c9f..8e7408d36b3 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -268,7 +268,7 @@ impl BlobTransaction {
     /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
     ///
     /// NOTE: The header will be a byte string header, not a list header.
-    pub fn encode_with_type_inner(&self, out: &mut dyn bytes::BufMut, with_header: bool) {
+    pub(crate) fn encode_with_type_inner(&self, out: &mut dyn bytes::BufMut, with_header: bool) {
         // Calculate the length of:
         // `tx_type || rlp([transaction_payload_body, blobs, commitments, proofs])`
         //
@@ -296,7 +296,7 @@ impl BlobTransaction {
     ///
     /// Note: this should be used only when implementing other RLP encoding methods, and does not
     /// represent the full RLP encoding of the blob transaction.
-    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
+    pub(crate) fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
         // First we construct both required list headers.
         //
         // The `transaction_payload_body` length is the length of the fields, plus the length of
@@ -334,7 +334,7 @@ impl BlobTransaction {
     ///
     /// If `with_header` is `true`, the length of the following will be calculated:
     /// `rlp(tx_type (0x03) || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-    pub fn payload_len_with_type(&self, with_header: bool) -> usize {
+    pub(crate) fn payload_len_with_type(&self, with_header: bool) -> usize {
         if with_header {
             // Construct a header and use that to calculate the total length
             let wrapped_header = Header {
@@ -360,7 +360,7 @@ impl BlobTransaction {
     ///
     /// Note: this should be used only when implementing other RLP encoding length methods, and
     /// does not represent the full RLP encoding of the blob transaction.
-    pub fn payload_len(&self) -> usize {
+    pub(crate) fn payload_len(&self) -> usize {
         // The `transaction_payload_body` length is the length of the fields, plus the length of
         // its list header.
         let tx_header = Header {
@@ -383,8 +383,8 @@ impl BlobTransaction {
     /// `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
     ///
     /// Note: this should be used only when implementing other RLP decoding methods, and does not
-    /// represent the full RLP decoding of the [PooledTransactionResponse] type.
-    pub fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
+    /// represent the full RLP decoding of the `PooledTransactionsElement` type.
+    pub(crate) fn decode_inner(data: &mut &[u8]) -> Result<Self, DecodeError> {
         // decode the _first_ list header for the rest of the transaction
         let header = Header::decode(data)?;
         if !header.list {
@@ -452,7 +452,7 @@ impl BlobTransactionSidecar {
     /// - `blobs`
     /// - `commitments`
     /// - `proofs`
-    pub fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
+    pub(crate) fn encode_inner(&self, out: &mut dyn bytes::BufMut) {
         // Encode the blobs, commitments, and proofs
         self.blobs.encode(out);
         self.commitments.encode(out);
@@ -460,7 +460,7 @@ impl BlobTransactionSidecar {
     }
 
     /// Outputs the RLP length of the [BlobTransactionSidecar] fields, without a RLP header.
-    pub fn fields_len(&self) -> usize {
+    pub(crate) fn fields_len(&self) -> usize {
         self.blobs.len() + self.commitments.len() + self.proofs.len()
     }
 
@@ -470,7 +470,7 @@ impl BlobTransactionSidecar {
     /// - `blobs`
     /// - `commitments`
     /// - `proofs`
-    pub fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+    pub(crate) fn decode_inner(buf: &mut &[u8]) -> Result<Self, DecodeError> {
         Ok(Self {
             blobs: Decodable::decode(buf)?,
             commitments: Decodable::decode(buf)?,
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 95096d5d207..10d97f01ebd 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -1392,7 +1392,7 @@ impl PooledTransactionsElement {
 }
 
 impl Encodable for PooledTransactionsElement {
-    /// Encodes an enveloped post EIP-4844 [PooledTransactionResponse].
+    /// Encodes an enveloped post EIP-4844 [PooledTransactionsElement].
     fn encode(&self, out: &mut dyn bytes::BufMut) {
         match self {
             Self::Transaction(tx) => tx.encode(out),
@@ -1417,7 +1417,7 @@ impl Encodable for PooledTransactionsElement {
 }
 
 impl Decodable for PooledTransactionsElement {
-    /// Decodes an enveloped post EIP-4844 [PooledTransactionResponse].
+    /// Decodes an enveloped post EIP-4844 [PooledTransactionsElement].
     ///
     /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
     fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
@@ -1486,9 +1486,9 @@ impl Decodable for PooledTransactionsElement {
 }
 
 impl From<TransactionSigned> for PooledTransactionsElement {
-    /// Converts from a [TransactionSigned] to a [PooledTransactionResponse].
+    /// Converts from a [TransactionSigned] to a [PooledTransactionsElement].
     ///
-    /// NOTE: This will always return a [PooledTransactionResponse::Transaction] variant.
+    /// NOTE: This will always return a [PooledTransactionsElement::Transaction] variant.
     fn from(tx: TransactionSigned) -> Self {
         Self::Transaction(tx)
     }

From 77e9e684933069dae0bd606972e4704b517ec8a6 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 13:08:13 -0400
Subject: [PATCH 16/19] make clippy happy

---
 crates/net/eth-wire/src/types/transactions.rs | 27 ++-----------------
 crates/primitives/src/transaction/eip4844.rs  |  2 +-
 2 files changed, 3 insertions(+), 26 deletions(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 355f95af43e..3621881883e 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -1,35 +1,12 @@
 //! Implements the `GetPooledTransactions` and `PooledTransactions` message types.
-use std::ops::Deref;
 
-use bytes::{Buf, Bytes};
 use reth_codecs::derive_arbitrary;
-use reth_primitives::{
-    kzg::{self, KzgCommitment, KzgProof, KzgSettings},
-    kzg_to_versioned_hash, BlobTransactionSidecar, PooledTransactionsElement, Signature,
-    Transaction, TransactionSigned, TransactionSignedNoHash, TxEip4844, TxType, EIP4844_TX_TYPE_ID,
-    H256,
-};
-use reth_rlp::{
-    Decodable, DecodeError, Encodable, Header, RlpDecodableWrapper, RlpEncodableWrapper,
-    EMPTY_LIST_CODE,
-};
+use reth_primitives::{PooledTransactionsElement, TransactionSigned, H256};
+use reth_rlp::{RlpDecodableWrapper, RlpEncodableWrapper};
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
-#[cfg(any(test, feature = "arbitrary"))]
-use proptest::{
-    arbitrary::{any as proptest_any, ParamsFor},
-    collection::vec as proptest_vec,
-    strategy::{BoxedStrategy, Strategy},
-};
-
-#[cfg(any(test, feature = "arbitrary"))]
-use reth_primitives::{
-    constants::eip4844::{FIELD_ELEMENTS_PER_BLOB, KZG_TRUSTED_SETUP},
-    kzg::{Blob, Bytes48, BYTES_PER_BLOB, BYTES_PER_FIELD_ELEMENT},
-};
-
 /// A list of transaction hashes that the peer would like transaction bodies for.
 #[derive_arbitrary(rlp)]
 #[derive(Clone, Debug, PartialEq, Eq, RlpEncodableWrapper, RlpDecodableWrapper, Default)]
diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 8e7408d36b3..2843a43ce1b 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -3,7 +3,7 @@ use crate::{
     constants::eip4844::DATA_GAS_PER_BLOB,
     kzg::{
         self, Blob, Bytes48, KzgCommitment, KzgProof, KzgSettings, BYTES_PER_BLOB,
-        BYTES_PER_COMMITMENT, BYTES_PER_FIELD_ELEMENT, BYTES_PER_PROOF, FIELD_ELEMENTS_PER_BLOB,
+        BYTES_PER_COMMITMENT, BYTES_PER_PROOF,
     },
     kzg_to_versioned_hash, Bytes, ChainId, Signature, Transaction, TransactionKind,
     TransactionSigned, TransactionSignedNoHash, TxType, EIP4844_TX_TYPE_ID, H256,

From c8dd3f302a5f6e471d580ce243ce71c6593eee77 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 13:11:44 -0400
Subject: [PATCH 17/19] remove newline before transactions imports

Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>
---
 crates/net/eth-wire/src/types/transactions.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/crates/net/eth-wire/src/types/transactions.rs b/crates/net/eth-wire/src/types/transactions.rs
index 3621881883e..4cb1abab280 100644
--- a/crates/net/eth-wire/src/types/transactions.rs
+++ b/crates/net/eth-wire/src/types/transactions.rs
@@ -1,5 +1,4 @@
 //! Implements the `GetPooledTransactions` and `PooledTransactions` message types.
-
 use reth_codecs::derive_arbitrary;
 use reth_primitives::{PooledTransactionsElement, TransactionSigned, H256};
 use reth_rlp::{RlpDecodableWrapper, RlpEncodableWrapper};

From e2d287401f9c3e1e2137dad0490ada79a4c46ea2 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 13:18:43 -0400
Subject: [PATCH 18/19] fix doc lint again

---
 crates/primitives/src/transaction/eip4844.rs | 8 ++++----
 crates/primitives/src/transaction/mod.rs     | 5 ++---
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/crates/primitives/src/transaction/eip4844.rs b/crates/primitives/src/transaction/eip4844.rs
index 2843a43ce1b..b09e019a76b 100644
--- a/crates/primitives/src/transaction/eip4844.rs
+++ b/crates/primitives/src/transaction/eip4844.rs
@@ -174,11 +174,11 @@ impl From<kzg::Error> for BlobTransactionValidationError {
     }
 }
 
-/// A response to [`GetPooledTransactions`] that includes blob data, their commitments, and their
+/// A response to `GetPooledTransactions` that includes blob data, their commitments, and their
 /// corresponding proofs.
 ///
 /// This is defined in [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844#networking) as an element
-/// of a [PooledTransactions] response.
+/// of a `PooledTransactions` response.
 ///
 /// NOTE: This contains a [TransactionSigned], which could be a non-4844 transaction type, even
 /// though that would not make sense. This type is meant to be constructed using decoding methods,
@@ -415,7 +415,7 @@ impl BlobTransaction {
 
         // # Calculating the hash
         //
-        // The full encoding of the [PooledTransaction] response is:
+        // The full encoding of the `PooledTransaction` response is:
         // `tx_type (0x03) || rlp([tx_payload_body, blobs, commitments, proofs])`
         //
         // The transaction hash however, is:
@@ -427,7 +427,7 @@ impl BlobTransaction {
         // Because the pooled transaction encoding is different than the hash encoding for
         // EIP-4844 transactions, we do not use the original buffer to calculate the hash.
         //
-        // Instead, we use [TransactionSignedNoHash] which will encode the transaction internally.
+        // Instead, we use `TransactionSignedNoHash` which will encode the transaction internally.
         let signed_tx = tx_no_hash.with_hash();
 
         Ok(Self { transaction: signed_tx, sidecar })
diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 10d97f01ebd..87100319053 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -1320,10 +1320,9 @@ impl IntoRecoveredTransaction for TransactionSignedEcRecovered {
     }
 }
 
-/// A response to [`GetPooledTransactions`]. This can include either a blob transaction, or a
+/// A response to `GetPooledTransactions`. This can include either a blob transaction, or a
 /// non-4844 signed transaction.
-// TODO: redo arbitrary for this encoding - the previous encoding was incorrect. then this can be
-// replaced with `TransactionSigned` in `PooledTransactions`
+// TODO: redo arbitrary for this encoding - the previous encoding was incorrect
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub enum PooledTransactionsElement {
     /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.

From e1ad9fbf7906f2018279bbe147089726099e6b8f Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Wed, 16 Aug 2023 15:36:58 -0400
Subject: [PATCH 19/19] move pooled element to pooled.rs

---
 crates/primitives/src/transaction/mod.rs    | 175 +------------------
 crates/primitives/src/transaction/pooled.rs | 178 ++++++++++++++++++++
 2 files changed, 180 insertions(+), 173 deletions(-)
 create mode 100644 crates/primitives/src/transaction/pooled.rs

diff --git a/crates/primitives/src/transaction/mod.rs b/crates/primitives/src/transaction/mod.rs
index 87100319053..7f67f0e1b02 100644
--- a/crates/primitives/src/transaction/mod.rs
+++ b/crates/primitives/src/transaction/mod.rs
@@ -24,6 +24,7 @@ pub use eip1559::TxEip1559;
 pub use eip2930::TxEip2930;
 pub use eip4844::{BlobTransaction, BlobTransactionSidecar, TxEip4844};
 pub use legacy::TxLegacy;
+pub use pooled::PooledTransactionsElement;
 
 mod access_list;
 mod eip1559;
@@ -32,6 +33,7 @@ mod eip4844;
 mod error;
 mod legacy;
 mod meta;
+mod pooled;
 mod signature;
 mod tx_type;
 pub(crate) mod util;
@@ -1320,179 +1322,6 @@ impl IntoRecoveredTransaction for TransactionSignedEcRecovered {
     }
 }
 
-/// A response to `GetPooledTransactions`. This can include either a blob transaction, or a
-/// non-4844 signed transaction.
-// TODO: redo arbitrary for this encoding - the previous encoding was incorrect
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
-pub enum PooledTransactionsElement {
-    /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
-    BlobTransaction(BlobTransaction),
-    /// A non-4844 signed transaction.
-    Transaction(TransactionSigned),
-}
-
-impl PooledTransactionsElement {
-    /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
-    ///
-    /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
-    /// For legacy transactions, the format is encoded as: `rlp(tx)`
-    /// For EIP-2718 typed transaction, the format is encoded as the type of the transaction
-    /// followed by the rlp of the transaction: `type` + `rlp(tx)`
-    ///
-    /// For encoded EIP-4844 transactions, the blob sidecar _must_ be included.
-    pub fn decode_enveloped(tx: Bytes) -> Result<Self, DecodeError> {
-        let mut data = tx.as_ref();
-
-        if data.is_empty() {
-            return Err(DecodeError::InputTooShort)
-        }
-
-        // Check if the tx is a list - tx types are less than EMPTY_LIST_CODE (0xc0)
-        if data[0] >= EMPTY_LIST_CODE {
-            // decode as legacy transaction
-            Ok(Self::Transaction(TransactionSigned::decode_rlp_legacy_transaction(&mut data)?))
-        } else {
-            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
-            let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
-
-            if tx_type == EIP4844_TX_TYPE_ID {
-                // Recall that the blob transaction response `TranactionPayload` is encoded like
-                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
-                //
-                // Note that `tx_payload_body` is a list:
-                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-                //
-                // This makes the full encoding:
-                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                //
-                // First, we advance the buffer past the type byte
-                data.advance(1);
-
-                // Now, we decode the inner blob transaction:
-                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                let blob_tx = BlobTransaction::decode_inner(&mut data)?;
-                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
-            } else {
-                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
-                // decode it again and advance the buffer on its own.
-                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
-                Ok(PooledTransactionsElement::Transaction(typed_tx))
-            }
-        }
-    }
-
-    /// Returns the inner [TransactionSigned].
-    pub fn into_transaction(self) -> TransactionSigned {
-        match self {
-            Self::Transaction(tx) => tx,
-            Self::BlobTransaction(blob_tx) => blob_tx.transaction,
-        }
-    }
-}
-
-impl Encodable for PooledTransactionsElement {
-    /// Encodes an enveloped post EIP-4844 [PooledTransactionsElement].
-    fn encode(&self, out: &mut dyn bytes::BufMut) {
-        match self {
-            Self::Transaction(tx) => tx.encode(out),
-            Self::BlobTransaction(blob_tx) => {
-                // The inner encoding is used with `with_header` set to true, making the final
-                // encoding:
-                // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-                blob_tx.encode_with_type_inner(out, true);
-            }
-        }
-    }
-
-    fn length(&self) -> usize {
-        match self {
-            Self::Transaction(tx) => tx.length(),
-            Self::BlobTransaction(blob_tx) => {
-                // the encoding uses a header, so we set `with_header` to true
-                blob_tx.payload_len_with_type(true)
-            }
-        }
-    }
-}
-
-impl Decodable for PooledTransactionsElement {
-    /// Decodes an enveloped post EIP-4844 [PooledTransactionsElement].
-    ///
-    /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
-    fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
-        // From the EIP-4844 spec:
-        // Blob transactions have two network representations. During transaction gossip responses
-        // (`PooledTransactions`), the EIP-2718 `TransactionPayload` of the blob transaction is
-        // wrapped to become:
-        //
-        // `rlp([tx_payload_body, blobs, commitments, proofs])`
-        //
-        // This means the full wire encoding is:
-        // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
-        //
-        // First, we check whether or not the transaction is a legacy transaction.
-        if buf.is_empty() {
-            return Err(DecodeError::InputTooShort)
-        }
-
-        // keep this around for buffer advancement post-legacy decoding
-        let mut original_encoding = *buf;
-
-        // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
-        // transaction
-        let header = Header::decode(buf)?;
-
-        // Check if the tx is a list
-        if header.list {
-            // decode as legacy transaction
-            let legacy_tx =
-                TransactionSigned::decode_rlp_legacy_transaction(&mut original_encoding)?;
-
-            // advance the buffer based on how far `decode_rlp_legacy_transaction` advanced the
-            // buffer
-            *buf = original_encoding;
-
-            Ok(PooledTransactionsElement::Transaction(legacy_tx))
-        } else {
-            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
-            let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
-
-            if tx_type == EIP4844_TX_TYPE_ID {
-                // Recall that the blob transaction response `TranactionPayload` is encoded like
-                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
-                //
-                // Note that `tx_payload_body` is a list:
-                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
-                //
-                // This makes the full encoding:
-                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                //
-                // First, we advance the buffer past the type byte
-                buf.advance(1);
-
-                // Now, we decode the inner blob transaction:
-                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
-                let blob_tx = BlobTransaction::decode_inner(buf)?;
-                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
-            } else {
-                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
-                // decode it again and advance the buffer on its own.
-                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
-                Ok(PooledTransactionsElement::Transaction(typed_tx))
-            }
-        }
-    }
-}
-
-impl From<TransactionSigned> for PooledTransactionsElement {
-    /// Converts from a [TransactionSigned] to a [PooledTransactionsElement].
-    ///
-    /// NOTE: This will always return a [PooledTransactionsElement::Transaction] variant.
-    fn from(tx: TransactionSigned) -> Self {
-        Self::Transaction(tx)
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use crate::{
diff --git a/crates/primitives/src/transaction/pooled.rs b/crates/primitives/src/transaction/pooled.rs
new file mode 100644
index 00000000000..44299f7a560
--- /dev/null
+++ b/crates/primitives/src/transaction/pooled.rs
@@ -0,0 +1,178 @@
+//! Includes the
+use crate::{BlobTransaction, Bytes, TransactionSigned, EIP4844_TX_TYPE_ID};
+use bytes::Buf;
+use reth_rlp::{Decodable, DecodeError, Encodable, Header, EMPTY_LIST_CODE};
+use serde::{Deserialize, Serialize};
+
+/// A response to `GetPooledTransactions`. This can include either a blob transaction, or a
+/// non-4844 signed transaction.
+// TODO: redo arbitrary for this encoding - the previous encoding was incorrect
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum PooledTransactionsElement {
+    /// A blob transaction, which includes the transaction, blob data, commitments, and proofs.
+    BlobTransaction(BlobTransaction),
+    /// A non-4844 signed transaction.
+    Transaction(TransactionSigned),
+}
+
+impl PooledTransactionsElement {
+    /// Decodes the "raw" format of transaction (e.g. `eth_sendRawTransaction`).
+    ///
+    /// The raw transaction is either a legacy transaction or EIP-2718 typed transaction
+    /// For legacy transactions, the format is encoded as: `rlp(tx)`
+    /// For EIP-2718 typed transaction, the format is encoded as the type of the transaction
+    /// followed by the rlp of the transaction: `type` + `rlp(tx)`
+    ///
+    /// For encoded EIP-4844 transactions, the blob sidecar _must_ be included.
+    pub fn decode_enveloped(tx: Bytes) -> Result<Self, DecodeError> {
+        let mut data = tx.as_ref();
+
+        if data.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // Check if the tx is a list - tx types are less than EMPTY_LIST_CODE (0xc0)
+        if data[0] >= EMPTY_LIST_CODE {
+            // decode as legacy transaction
+            Ok(Self::Transaction(TransactionSigned::decode_rlp_legacy_transaction(&mut data)?))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *data.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                data.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(&mut data)?;
+                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(&mut data)?;
+                Ok(PooledTransactionsElement::Transaction(typed_tx))
+            }
+        }
+    }
+
+    /// Returns the inner [TransactionSigned].
+    pub fn into_transaction(self) -> TransactionSigned {
+        match self {
+            Self::Transaction(tx) => tx,
+            Self::BlobTransaction(blob_tx) => blob_tx.transaction,
+        }
+    }
+}
+
+impl Encodable for PooledTransactionsElement {
+    /// Encodes an enveloped post EIP-4844 [PooledTransactionsElement].
+    fn encode(&self, out: &mut dyn bytes::BufMut) {
+        match self {
+            Self::Transaction(tx) => tx.encode(out),
+            Self::BlobTransaction(blob_tx) => {
+                // The inner encoding is used with `with_header` set to true, making the final
+                // encoding:
+                // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+                blob_tx.encode_with_type_inner(out, true);
+            }
+        }
+    }
+
+    fn length(&self) -> usize {
+        match self {
+            Self::Transaction(tx) => tx.length(),
+            Self::BlobTransaction(blob_tx) => {
+                // the encoding uses a header, so we set `with_header` to true
+                blob_tx.payload_len_with_type(true)
+            }
+        }
+    }
+}
+
+impl Decodable for PooledTransactionsElement {
+    /// Decodes an enveloped post EIP-4844 [PooledTransactionsElement].
+    ///
+    /// CAUTION: this expects that `buf` is `[id, rlp(tx)]`
+    fn decode(buf: &mut &[u8]) -> Result<Self, DecodeError> {
+        // From the EIP-4844 spec:
+        // Blob transactions have two network representations. During transaction gossip responses
+        // (`PooledTransactions`), the EIP-2718 `TransactionPayload` of the blob transaction is
+        // wrapped to become:
+        //
+        // `rlp([tx_payload_body, blobs, commitments, proofs])`
+        //
+        // This means the full wire encoding is:
+        // `rlp(tx_type || rlp([transaction_payload_body, blobs, commitments, proofs]))`
+        //
+        // First, we check whether or not the transaction is a legacy transaction.
+        if buf.is_empty() {
+            return Err(DecodeError::InputTooShort)
+        }
+
+        // keep this around for buffer advancement post-legacy decoding
+        let mut original_encoding = *buf;
+
+        // If the header is a list header, it is a legacy transaction. Otherwise, it is a typed
+        // transaction
+        let header = Header::decode(buf)?;
+
+        // Check if the tx is a list
+        if header.list {
+            // decode as legacy transaction
+            let legacy_tx =
+                TransactionSigned::decode_rlp_legacy_transaction(&mut original_encoding)?;
+
+            // advance the buffer based on how far `decode_rlp_legacy_transaction` advanced the
+            // buffer
+            *buf = original_encoding;
+
+            Ok(PooledTransactionsElement::Transaction(legacy_tx))
+        } else {
+            // decode the type byte, only decode BlobTransaction if it is a 4844 transaction
+            let tx_type = *buf.first().ok_or(DecodeError::InputTooShort)?;
+
+            if tx_type == EIP4844_TX_TYPE_ID {
+                // Recall that the blob transaction response `TranactionPayload` is encoded like
+                // this: `rlp([tx_payload_body, blobs, commitments, proofs])`
+                //
+                // Note that `tx_payload_body` is a list:
+                // `[chain_id, nonce, max_priority_fee_per_gas, ..., y_parity, r, s]`
+                //
+                // This makes the full encoding:
+                // `tx_type (0x03) || rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                //
+                // First, we advance the buffer past the type byte
+                buf.advance(1);
+
+                // Now, we decode the inner blob transaction:
+                // `rlp([[chain_id, nonce, ...], blobs, commitments, proofs])`
+                let blob_tx = BlobTransaction::decode_inner(buf)?;
+                Ok(PooledTransactionsElement::BlobTransaction(blob_tx))
+            } else {
+                // DO NOT advance the buffer for the type, since we want the enveloped decoding to
+                // decode it again and advance the buffer on its own.
+                let typed_tx = TransactionSigned::decode_enveloped_typed_transaction(buf)?;
+                Ok(PooledTransactionsElement::Transaction(typed_tx))
+            }
+        }
+    }
+}
+
+impl From<TransactionSigned> for PooledTransactionsElement {
+    /// Converts from a [TransactionSigned] to a [PooledTransactionsElement].
+    ///
+    /// NOTE: This will always return a [PooledTransactionsElement::Transaction] variant.
+    fn from(tx: TransactionSigned) -> Self {
+        Self::Transaction(tx)
+    }
+}