net: use epee_encoding instead of monero-epee-bin-serde

This gives us more control than what serde provides. This
PR also moves to use `Bytes` where possible to allow
zero-copy parsing of network messages.

Cargo.lock

@@ -438,10 +438,10 @@ dependencies = [
  "curve25519-dalek",
  "dalek-ff-group",
  "dirs",
+ "epee-encoding",
  "futures",
  "hex",
  "monero-consensus",
- "monero-epee-bin-serde",
  "monero-serai",
  "monero-wire",
  "multiexp",
@@ -604,6 +604,7 @@ dependencies = [
  "fixed-bytes",
  "hex",
  "paste",
+ "ref-cast",
  "sealed",
  "thiserror",
 ]
@@ -1142,16 +1143,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "monero-epee-bin-serde"
-version = "1.0.1"
-source = "git+https://github.com/monero-rs/monero-epee-bin-serde.git?rev=fae7a23#fae7a23f8e57f19553c341c0878b4f0fa5a6994d"
-dependencies = [
- "byteorder",
- "serde",
- "serde_bytes",
-]
-
 [[package]]
 name = "monero-generators"
 version = "0.4.0"
@@ -1232,11 +1223,11 @@ dependencies = [
 name = "monero-wire"
 version = "0.1.0"
 dependencies = [
+ "bytes",
+ "epee-encoding",
+ "fixed-bytes",
  "hex",
  "levin-cuprate",
- "monero-epee-bin-serde",
- "serde",
- "serde_bytes",
  "thiserror",
 ]
 
@@ -1587,6 +1578,26 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4846d4c50d1721b1a3bef8af76924eef20d5e723647333798c1b519b3a9473f"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fddb4f8d99b0a2ebafc65a87a69a7b9875e4b1ae1f00db265d300ef7f28bccc"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.2"
@@ -1770,15 +1781,6 @@ dependencies = [
  "serde_derive",
 ]
 
-[[package]]
-name = "serde_bytes"
-version = "0.11.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b8497c313fd43ab992087548117643f6fcd935cbf36f176ffda0aacf9591734"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "serde_derive"
 version = "1.0.195"

consensus/Cargo.toml

@@ -21,7 +21,7 @@ binaries = [
     "dep:tracing-subscriber",
     "dep:serde_json",
     "dep:serde",
-    "dep:monero-epee-bin-serde",
+    "dep:epee-encoding",
     "dep:monero-wire",
     "dep:borsh",
     "dep:dirs",
@@ -51,7 +51,7 @@ hex = "0.4"
 
 # used in binaries
 monero-wire = {path="../net/monero-wire", optional = true}
-monero-epee-bin-serde = { workspace = true , optional = true}
+epee-encoding = { path="../net/epee-encoding" , optional = true}
 serde_json = {version = "1", optional = true}
 serde = {version = "1", optional = true, features = ["derive"]}
 tracing-subscriber = {version = "0.3", optional = true}

consensus/src/rpc/connection.rs

@@ -1,3 +1,4 @@
+use std::ops::Deref;
 use std::{
     collections::{HashMap, HashSet},
     ops::Range,
@@ -15,9 +16,9 @@ use monero_serai::{
     rpc::{HttpRpc, Rpc},
     transaction::Transaction,
 };
-use monero_wire::common::{BlockCompleteEntry, TransactionBlobs};
+use monero_wire::common::TransactionBlobs;
 use rayon::prelude::*;
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use serde_json::json;
 use tokio::{
     sync::RwLock,
@@ -174,41 +175,56 @@ impl RpcConnection {
     ) -> Result<Vec<(Block, Vec<Transaction>)>, tower::BoxError> {
         tracing::info!("Getting blocks in range: {:?}", range);
 
-        #[derive(Serialize)]
-        pub struct Request {
-            pub heights: Vec<u64>,
-        }
+        mod items {
+            use monero_wire::common::BlockCompleteEntry;
 
-        #[derive(Deserialize)]
-        pub struct Response {
-            pub blocks: Vec<BlockCompleteEntry>,
+            pub struct Request {
+                pub heights: Vec<u64>,
+            }
+
+            epee_encoding::epee_object!(
+                Request,
+                heights: Vec<u64>,
+            );
+
+            pub struct Response {
+                pub blocks: Vec<BlockCompleteEntry>,
+            }
+
+            epee_encoding::epee_object!(
+                Response,
+                blocks: Vec<BlockCompleteEntry>,
+            );
         }
+        use items::*;
 
         let res = self
             .con
             .bin_call(
                 "get_blocks_by_height.bin",
-                monero_epee_bin_serde::to_bytes(&Request {
+                epee_encoding::to_bytes(Request {
                     heights: range.collect(),
-                })?,
+                })?
+                .to_vec(),
             )
             .await?;
 
         let address = self.address.clone();
         rayon_spawn_async(move || {
-            let blocks: Response = monero_epee_bin_serde::from_bytes(res)?;
+            let blocks: Response =
+                epee_encoding::from_bytes(&mut epee_encoding::macros::bytes::Bytes::from(res))?;
 
             blocks
                 .blocks
                 .into_par_iter()
                 .map(|b| {
-                    let block = Block::read(&mut b.block.as_slice())?;
+                    let block = Block::read(&mut b.block.deref())?;
 
                     let txs = match b.txs {
                         TransactionBlobs::Pruned(_) => return Err("node sent pruned txs!".into()),
                         TransactionBlobs::Normal(txs) => txs
                             .into_par_iter()
-                            .map(|tx| Transaction::read(&mut tx.as_slice()))
+                            .map(|tx| Transaction::read(&mut tx.deref()))
                             .collect::<Result<_, _>>()?,
                         TransactionBlobs::None => vec![],
                     };
@@ -237,29 +253,56 @@ impl RpcConnection {
             out_ids.values().map(|amt_map| amt_map.len()).sum::<usize>()
         );
 
-        #[derive(Serialize, Copy, Clone)]
-        struct OutputID {
-            amount: u64,
-            index: u64,
+        mod items {
+
+            #[derive(Copy, Clone)]
+            pub struct OutputID {
+                pub amount: u64,
+                pub index: u64,
+            }
+
+            epee_encoding::epee_object!(
+                OutputID,
+                amount: u64,
+                index: u64,
+            );
+
+            #[derive(Clone)]
+            pub struct Request {
+                pub outputs: Vec<OutputID>,
+            }
+
+            epee_encoding::epee_object!(
+                Request,
+                outputs: Vec<OutputID>,
+            );
+
+            pub struct OutputRes {
+                pub height: u64,
+                pub key: [u8; 32],
+                pub mask: [u8; 32],
+                pub txid: [u8; 32],
+            }
+
+            epee_encoding::epee_object!(
+                OutputRes,
+                height: u64,
+                key: [u8; 32],
+                mask: [u8; 32],
+                txid: [u8; 32],
+            );
+
+            pub struct Response {
+                pub outs: Vec<OutputRes>,
+            }
+
+            epee_encoding::epee_object!(
+                Response,
+                outs: Vec<OutputRes>,
+            );
         }
 
-        #[derive(Serialize, Clone)]
-        struct Request<'a> {
-            outputs: &'a [OutputID],
-        }
-
-        #[derive(Deserialize)]
-        struct OutputRes {
-            height: u64,
-            key: [u8; 32],
-            mask: [u8; 32],
-            txid: [u8; 32],
-        }
-
-        #[derive(Deserialize)]
-        struct Response {
-            outs: Vec<OutputRes>,
-        }
+        use items::*;
 
         let outputs = rayon_spawn_async(|| {
             out_ids
@@ -281,7 +324,10 @@ impl RpcConnection {
             .con
             .bin_call(
                 "get_outs.bin",
-                monero_epee_bin_serde::to_bytes(&Request { outputs: &outputs })?,
+                epee_encoding::to_bytes(Request {
+                    outputs: outputs.clone(),
+                })?
+                .to_vec(),
             )
             .await?;
 
@@ -289,7 +335,8 @@ impl RpcConnection {
 
         let span = tracing::Span::current();
         rayon_spawn_async(move || {
-            let outs: Response = monero_epee_bin_serde::from_bytes(&res)?;
+            let outs: Response =
+                epee_encoding::from_bytes(&mut epee_encoding::macros::bytes::Bytes::from(res))?;
 
             tracing::info!(parent: &span, "Got outputs len: {}", outs.outs.len());
 

net/epee-encoding/Cargo.toml

@@ -19,6 +19,7 @@ fixed-bytes = { path = "../fixed-bytes", default-features = false }
 
 sealed = "0.5.0"
 paste = "1.0.14"
+ref-cast = "1.0.22"
 bytes = { workspace = true }
 thiserror = { workspace = true, optional = true}
 

net/epee-encoding/src/container_as_blob.rs

@@ -0,0 +1,99 @@
+use bytes::{Buf, BufMut, Bytes, BytesMut};
+use ref_cast::RefCast;
+use sealed::sealed;
+
+use crate::{error::*, value::*, EpeeValue, InnerMarker, Marker};
+
+#[derive(RefCast)]
+#[repr(transparent)]
+pub struct ContainerAsBlob<T: Containerable + EpeeValue>(Vec<T>);
+
+impl<T: Containerable + EpeeValue> From<Vec<T>> for ContainerAsBlob<T> {
+    fn from(value: Vec<T>) -> Self {
+        ContainerAsBlob(value)
+    }
+}
+
+impl<T: Containerable + EpeeValue> From<ContainerAsBlob<T>> for Vec<T> {
+    fn from(value: ContainerAsBlob<T>) -> Self {
+        value.0
+    }
+}
+
+impl<'a, T: Containerable + EpeeValue> From<&'a Vec<T>> for &'a ContainerAsBlob<T> {
+    fn from(value: &'a Vec<T>) -> Self {
+        ContainerAsBlob::ref_cast(value)
+    }
+}
+
+#[sealed]
+impl<T: Containerable + EpeeValue> EpeeValue for ContainerAsBlob<T> {
+    const MARKER: Marker = Marker::new(InnerMarker::String);
+
+    fn read<B: Buf>(r: &mut B, marker: &Marker) -> Result<Self> {
+        let bytes = Bytes::read(r, marker)?;
+        if bytes.len() % T::SIZE != 0 {
+            return Err(Error::Value("Can't convert blob container to Vec type."));
+        }
+
+        Ok(ContainerAsBlob(
+            bytes
+                .windows(T::SIZE)
+                .step_by(T::SIZE)
+                .map(T::from_bytes)
+                .collect(),
+        ))
+    }
+
+    fn should_write(&self) -> bool {
+        !self.0.is_empty()
+    }
+
+    fn epee_default_value() -> Option<Self> {
+        Some(ContainerAsBlob(vec![]))
+    }
+
+    fn write<B: BufMut>(self, w: &mut B) -> crate::Result<()> {
+        let mut buf = BytesMut::with_capacity(self.0.len() * T::SIZE);
+        self.0.iter().for_each(|tt| tt.push_bytes(&mut buf));
+        buf.write(w)
+    }
+}
+
+pub trait Containerable {
+    const SIZE: usize;
+
+    /// Returns `Self` from bytes.
+    ///
+    /// `bytes` is guaranteed to be [`Self::SIZE`] long.
+    fn from_bytes(bytes: &[u8]) -> Self;
+
+    fn push_bytes(&self, buf: &mut BytesMut);
+}
+
+macro_rules! int_container_able {
+    ($int:ty ) => {
+        impl Containerable for $int {
+            const SIZE: usize = std::mem::size_of::<$int>();
+
+            fn from_bytes(bytes: &[u8]) -> Self {
+                <$int>::from_le_bytes(bytes.try_into().unwrap())
+            }
+
+            fn push_bytes(&self, buf: &mut BytesMut) {
+                buf.put_slice(&self.to_le_bytes())
+            }
+        }
+    };
+}
+
+int_container_able!(u16);
+int_container_able!(u32);
+int_container_able!(u64);
+int_container_able!(u128);
+
+int_container_able!(i8);
+int_container_able!(i16);
+int_container_able!(i32);
+int_container_able!(i64);
+int_container_able!(i128);

net/epee-encoding/src/lib.rs

@@ -51,7 +51,7 @@
 //!
 //!
 //! let data = [1, 17, 1, 1, 1, 1, 2, 1, 1, 4, 3, 118, 97, 108, 5, 4, 0, 0, 0, 0, 0, 0, 0]; // the data to decode;
-//! let val: Test = from_bytes(&data).unwrap();
+//! let val: Test = from_bytes(&mut &data).unwrap();
 //! let data = to_bytes(val).unwrap();
 //!
 //!
@@ -79,18 +79,18 @@
 //!
 //!
 //! let data = [1, 17, 1, 1, 1, 1, 2, 1, 1, 4, 3, 118, 97, 108, 5, 4, 0, 0, 0, 0, 0, 0, 0]; // the data to decode;
-//! let val: Test2 = from_bytes(&data).unwrap();
+//! let val: Test2 = from_bytes(&mut &data).unwrap();
 //! let data = to_bytes(val).unwrap();
 //!
 //! ```
 
 extern crate alloc;
 
-use alloc::vec::Vec;
 use core::{ops::Deref, str::from_utf8 as str_from_utf8};
 
-use bytes::{Buf, BufMut, Bytes};
+use bytes::{Buf, BufMut, Bytes, BytesMut};
 
+pub mod container_as_blob;
 pub mod error;
 mod io;
 pub mod macros;
@@ -139,13 +139,13 @@ pub trait EpeeObject: Sized {
 }
 
 /// Read the object `T` from a byte array.
-pub fn from_bytes<T: EpeeObject>(mut buf: &[u8]) -> Result<T> {
-    read_head_object(&mut buf)
+pub fn from_bytes<T: EpeeObject, B: Buf>(buf: &mut B) -> Result<T> {
+    read_head_object(buf)
 }
 
 /// Turn the object into epee bytes.
-pub fn to_bytes<T: EpeeObject>(val: T) -> Result<Vec<u8>> {
-    let mut buf = Vec::<u8>::new();
+pub fn to_bytes<T: EpeeObject>(val: T) -> Result<BytesMut> {
+    let mut buf = BytesMut::new();
     write_head_object(val, &mut buf)?;
     Ok(buf)
 }

net/epee-encoding/src/macros.rs

@@ -3,7 +3,7 @@ pub use paste::paste;
 
 #[macro_export]
 macro_rules! field_name {
-    ($field: ident, $alt_name: literal) => {
+    ($field: tt, $alt_name: tt) => {
         $alt_name
     };
     ($field: ident,) => {
@@ -21,11 +21,21 @@ macro_rules! field_ty {
     };
 }
 
+#[macro_export]
+macro_rules! try_right_then_left {
+    ($a:expr, $b:expr) => {
+        $b
+    };
+    ($a:expr,) => {
+        $a
+    };
+}
+
 #[macro_export]
 macro_rules! epee_object {
     (
         $obj:ident,
-        $($field: ident $(($alt_name: literal))?: $ty:ty $(= $default:literal)? $(as $ty_as:ty)?, )+
+        $($field: ident $(($alt_name: literal))?: $ty:ty $(as $ty_as:ty )? $(= $default:expr)?  $(=> $read_fn:expr, $write_fn:expr, $should_write_fn:expr)?, )+
         $(!flatten: $($flat_field: ident: $flat_ty:ty ,)+)?
 
     ) => {
@@ -44,7 +54,9 @@ macro_rules! epee_object {
                     fn add_field<B: epee_encoding::macros::bytes::Buf>(&mut self, name: &str, b: &mut B) -> epee_encoding::error::Result<bool> {
                         match name {
                             $(epee_encoding::field_name!($field, $($alt_name)?) => {
-                                if core::mem::replace(&mut self.$field, Some(epee_encoding::read_epee_value(b)?)).is_some() {
+                                if core::mem::replace(&mut self.$field, Some(
+                                    epee_encoding::try_right_then_left!(epee_encoding::read_epee_value(b)?, $($read_fn(b)?)?)
+                                )).is_some() {
                                     Err(epee_encoding::error::Error::Value("Duplicate field in data"))?;
                                 }
                                 Ok(true)
@@ -65,11 +77,18 @@ macro_rules! epee_object {
                         Ok(
                             $obj {
                                 $(
-                                  $field: self.$field
+                                  $field: {
+                                      let epee_default_value = epee_encoding::try_right_then_left!(epee_encoding::EpeeValue::epee_default_value(), $({
+                                            let _ = $should_write_fn;
+                                            None
+                                      })?);
+
+                                      self.$field
                                             $(.or(Some($default)))?
-                                              .or(epee_encoding::EpeeValue::epee_default_value())
+                                            .or(epee_default_value)
                                             $(.map(<$ty_as>::into))?
-                                              .ok_or(epee_encoding::error::Error::Value("Missing field in data"))?,
+                                              .ok_or(epee_encoding::error::Error::Value("Missing field in data"))?
+                                  },
                                 )+
 
                                 $(
@@ -90,7 +109,10 @@ macro_rules! epee_object {
                     let mut fields = 0;
 
                     $(
-                      if $(&self.$field != &$default &&)? epee_encoding::EpeeValue::should_write($(<&$ty_as>::from)?( &self.$field) ) {
+                    let field = epee_encoding::try_right_then_left!(&self.$field, $(<&$ty_as>::from(&self.$field))? );
+
+                      if $((field) != &$default &&)? epee_encoding::try_right_then_left!(epee_encoding::EpeeValue::should_write, $($should_write_fn)?)(field )
+                      {
                           fields += 1;
                       }
                     )+
@@ -106,8 +128,11 @@ macro_rules! epee_object {
 
                 fn write_fields<B: epee_encoding::macros::bytes::BufMut>(self, w: &mut B) -> epee_encoding::error::Result<()> {
                     $(
-                      if $(&self.$field != &$default &&)? epee_encoding::EpeeValue::should_write($(<&$ty_as>::from)?( &self.$field) ) {
-                         epee_encoding::write_field($(<$ty_as>::from)?(self.$field), epee_encoding::field_name!($field, $($alt_name)?), w)?;
+                    let field = epee_encoding::try_right_then_left!(self.$field, $(<$ty_as>::from(self.$field))? );
+
+                      if $(field != $default &&)? epee_encoding::try_right_then_left!(epee_encoding::EpeeValue::should_write, $($should_write_fn)?)(&field )
+                        {
+                         epee_encoding::try_right_then_left!(epee_encoding::write_field, $($write_fn)?)((field), epee_encoding::field_name!($field, $($alt_name)?), w)?;
                       }
                     )+
 

net/epee-encoding/src/value.rs

@@ -3,7 +3,7 @@ use alloc::{string::String, vec::Vec};
 /// the different possible base epee values.
 use core::fmt::Debug;
 
-use bytes::{Buf, BufMut, Bytes};
+use bytes::{Buf, BufMut, Bytes, BytesMut};
 use sealed::sealed;
 
 use fixed_bytes::{ByteArray, ByteArrayVec};
@@ -15,7 +15,7 @@ use crate::{
 /// A trait for epee values, this trait is sealed as all possible epee values are
 /// defined in the lib, to make an [`EpeeValue`] outside the lib you will need to
 /// use the trait [`EpeeObject`].
-#[sealed]
+#[sealed(pub(crate))]
 pub trait EpeeValue: Sized {
     const MARKER: Marker;
 
@@ -234,6 +234,42 @@ impl EpeeValue for Bytes {
     }
 }
 
+#[sealed::sealed]
+impl EpeeValue for BytesMut {
+    const MARKER: Marker = Marker::new(InnerMarker::String);
+
+    fn read<B: Buf>(r: &mut B, marker: &Marker) -> Result<Self> {
+        if marker != &Self::MARKER {
+            return Err(Error::Format("Marker does not match expected Marker"));
+        }
+
+        let len = read_varint(r)?;
+        if len > MAX_STRING_LEN_POSSIBLE {
+            return Err(Error::Format("Byte array exceeded max length"));
+        }
+
+        if r.remaining() < len.try_into()? {
+            return Err(Error::IO("Not enough bytes to fill object"));
+        }
+
+        let mut bytes = BytesMut::zeroed(len.try_into()?);
+        r.copy_to_slice(&mut bytes);
+
+        Ok(bytes)
+    }
+
+    fn write<B: BufMut>(self, w: &mut B) -> Result<()> {
+        write_varint(self.len().try_into()?, w)?;
+
+        if w.remaining_mut() < self.len() {
+            return Err(Error::IO("Not enough capacity to write bytes"));
+        }
+
+        w.put(self);
+        Ok(())
+    }
+}
+
 #[sealed::sealed]
 impl<const N: usize> EpeeValue for ByteArrayVec<N> {
     const MARKER: Marker = Marker::new(InnerMarker::String);
@@ -481,6 +517,8 @@ epee_seq!(f64);
 epee_seq!(bool);
 epee_seq!(Vec<u8>);
 epee_seq!(String);
+epee_seq!(Bytes);
+epee_seq!(BytesMut);
 
 #[sealed]
 impl<T: EpeeValue> EpeeValue for Option<T> {

net/epee-encoding/tests/alt_name.rs

@@ -27,7 +27,7 @@ fn epee_alt_name() {
     let val2 = AltName2 { val2: 40, d: 30 };
     let bytes = to_bytes(val2).unwrap();
 
-    let val: AltName = from_bytes(&bytes).unwrap();
+    let val: AltName = from_bytes(&mut bytes.clone()).unwrap();
 
     let bytes2 = to_bytes(val).unwrap();
 

net/epee-encoding/tests/duplicate_key.rs

@@ -25,7 +25,7 @@ fn duplicate_key() {
         b'a', 0x0B, 0x00,
     ];
 
-    assert!(from_bytes::<T>(&data).is_err());
+    assert!(from_bytes::<T, _>(&mut &data[..]).is_err());
 }
 
 #[test]
@@ -35,5 +35,5 @@ fn duplicate_key_with_default() {
         b'a', 0x0B, 0x00,
     ];
 
-    assert!(from_bytes::<TT>(&data).is_err());
+    assert!(from_bytes::<TT, _>(&mut &data[..]).is_err());
 }

net/epee-encoding/tests/epee_default.rs

@@ -8,7 +8,7 @@ pub struct Optional {
 epee_object!(
     Optional,
     val: u8,
-    optional_val: i32 = -4,
+    optional_val: i32 = -4_i32,
 );
 pub struct NotOptional {
     val: u8,
@@ -37,11 +37,11 @@ fn epee_default_does_not_encode() {
         val: 1,
         optional_val: -4,
     };
-    let bytes = to_bytes(val).unwrap();
+    let mut bytes = to_bytes(val).unwrap().freeze();
 
-    assert!(from_bytes::<NotOptional>(&bytes).is_err());
+    assert!(from_bytes::<NotOptional, _>(&mut bytes.clone()).is_err());
 
-    let val: Optional = from_bytes(&bytes).unwrap();
+    let val: Optional = from_bytes(&mut bytes).unwrap();
     assert_eq!(val.optional_val, -4);
     assert_eq!(val.val, 1);
 }
@@ -52,11 +52,11 @@ fn epee_non_default_does_encode() {
         val: 8,
         optional_val: -3,
     };
-    let bytes = to_bytes(val).unwrap();
+    let mut bytes = to_bytes(val).unwrap().freeze();
 
-    assert!(from_bytes::<NotOptional>(&bytes).is_ok());
+    assert!(from_bytes::<NotOptional, _>(&mut bytes.clone()).is_ok());
 
-    let val: Optional = from_bytes(&bytes).unwrap();
+    let val: Optional = from_bytes(&mut bytes).unwrap();
     assert_eq!(val.optional_val, -3);
     assert_eq!(val.val, 8)
 }
@@ -64,11 +64,11 @@ fn epee_non_default_does_encode() {
 #[test]
 fn epee_value_not_present_with_default() {
     let val = NotPresent { val: 76 };
-    let bytes = to_bytes(val).unwrap();
+    let mut bytes = to_bytes(val).unwrap().freeze();
 
-    assert!(from_bytes::<NotOptional>(&bytes).is_err());
+    assert!(from_bytes::<NotOptional, _>(&mut bytes.clone()).is_err());
 
-    let val: Optional = from_bytes(&bytes).unwrap();
+    let val: Optional = from_bytes(&mut bytes).unwrap();
     assert_eq!(val.optional_val, -4);
     assert_eq!(val.val, 76)
 }

net/epee-encoding/tests/flattend.rs

@@ -43,9 +43,9 @@ fn epee_flatten() {
         val: 94,
         val2: vec![4, 5],
     };
-    let bytes = to_bytes(val2.clone()).unwrap();
+    let mut bytes = to_bytes(val2.clone()).unwrap();
 
-    let val: Parent = from_bytes(&bytes).unwrap();
+    let val: Parent = from_bytes(&mut bytes).unwrap();
 
     assert_eq!(val.child.val2, val2.val2);
     assert_eq!(val.child.val, val2.val);
@@ -95,8 +95,8 @@ epee_object!(
 fn epee_double_flatten() {
     let val = Parent12::default();
 
-    let bytes = to_bytes(val.clone()).unwrap();
-    let val1: Parent12 = from_bytes(&bytes).unwrap();
+    let mut bytes = to_bytes(val.clone()).unwrap();
+    let val1: Parent12 = from_bytes(&mut bytes).unwrap();
 
     assert_eq!(val, val1);
 }

net/epee-encoding/tests/options.rs

@@ -1,4 +1,5 @@
 use epee_encoding::{epee_object, from_bytes, to_bytes};
+use std::ops::Deref;
 
 #[derive(Clone)]
 struct T {
@@ -11,9 +12,10 @@ epee_object!(
 );
 
 #[test]
+#[allow(clippy::useless_asref)]
 fn optional_val_not_in_data() {
     let bytes: &[u8] = b"\x01\x11\x01\x01\x01\x01\x02\x01\x01\x00";
-    let t: T = from_bytes(bytes).unwrap();
+    let t: T = from_bytes(&mut bytes.as_ref()).unwrap();
     let bytes2 = to_bytes(t.clone()).unwrap();
     assert_eq!(bytes, bytes2);
     assert!(t.val.is_none());
@@ -24,8 +26,8 @@ fn optional_val_in_data() {
     let bytes = [
         0x01, 0x11, 0x01, 0x1, 0x01, 0x01, 0x02, 0x1, 0x1, 0x04, 0x03, b'v', b'a', b'l', 0x08, 21,
     ];
-    let t: T = from_bytes(&bytes).unwrap();
+    let t: T = from_bytes(&mut &bytes[..]).unwrap();
     let bytes2 = to_bytes(t.clone()).unwrap();
-    assert_eq!(bytes.as_slice(), bytes2.as_slice());
+    assert_eq!(bytes.as_slice(), bytes2.deref());
     assert_eq!(t.val.unwrap(), 21);
 }

net/epee-encoding/tests/p2p.rs

@@ -51,9 +51,9 @@ epee_object!(
 fn p2p_handshake() {
     let bytes = hex::decode("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").unwrap();
 
-    let val: HandshakeR = from_bytes(&bytes).unwrap();
+    let val: HandshakeR = from_bytes(&mut bytes.as_slice()).unwrap();
 
-    let bytes = to_bytes(val.clone()).unwrap();
+    let mut bytes = to_bytes(val.clone()).unwrap();
 
-    assert_eq!(val, from_bytes(&bytes).unwrap());
+    assert_eq!(val, from_bytes(&mut bytes).unwrap());
 }

net/epee-encoding/tests/rpc.rs

@@ -63,21 +63,21 @@ epee_object!(
 #[test]
 fn rpc_get_outs_response() {
     let bytes = hex::decode("011101010101020101140763726564697473050000000000000000046f7574738c04140668656967687405a100000000000000036b65790a802d392d0be38eb4699c17767e62a063b8d2f989ec15c80e5d2665ab06f8397439046d61736b0a805e8b863c5b267deda13f4bc5d5ec8e59043028380f2431bc8691c15c83e1fea404747869640a80c0646e065a33b849f0d9563673ca48eb0c603fe721dd982720dba463172c246f08756e6c6f636b65640b00067374617475730a084f4b08746f705f686173680a0009756e747275737465640b00").unwrap();
-    let val: GetOutsResponse = from_bytes(&bytes).unwrap();
-    let bytes = to_bytes(val.clone()).unwrap();
+    let val: GetOutsResponse = from_bytes(&mut bytes.as_slice()).unwrap();
+    let mut bytes = to_bytes(val.clone()).unwrap();
 
-    assert_eq!(val, from_bytes(&bytes).unwrap());
+    assert_eq!(val, from_bytes(&mut bytes).unwrap());
 }
 
 #[test]
 fn get_out_indexes_response() {
-    let bytes = [
+    let bytes: [u8; 61] = [
         1, 17, 1, 1, 1, 1, 2, 1, 1, 16, 7, 99, 114, 101, 100, 105, 116, 115, 5, 0, 0, 0, 0, 0, 0,
         0, 0, 6, 115, 116, 97, 116, 117, 115, 10, 8, 79, 75, 8, 116, 111, 112, 95, 104, 97, 115,
         104, 10, 0, 9, 117, 110, 116, 114, 117, 115, 116, 101, 100, 11, 0,
     ];
-    let val: GetOIndexesResponse = from_bytes(&bytes).unwrap();
-    let bytes = to_bytes(val.clone()).unwrap();
+    let val: GetOIndexesResponse = from_bytes(&mut bytes.as_slice()).unwrap();
+    let mut bytes = to_bytes(val.clone()).unwrap();
 
-    assert_eq!(val, from_bytes(&bytes).unwrap());
+    assert_eq!(val, from_bytes(&mut bytes).unwrap());
 }

net/epee-encoding/tests/seq.rs

@@ -28,9 +28,9 @@ fn seq_with_zero_len_can_have_any_marker() {
         data.push(0x80 | marker);
         data.push(0);
 
-        assert!(from_bytes::<ObjSeq>(&data).is_ok());
+        assert!(from_bytes::<ObjSeq, _>(&mut data.as_slice()).is_ok());
 
-        assert!(from_bytes::<ValSeq>(&data).is_ok());
+        assert!(from_bytes::<ValSeq, _>(&mut data.as_slice()).is_ok());
 
         data.drain(14..);
     }
@@ -48,7 +48,7 @@ fn seq_with_non_zero_len_must_have_correct_marker() {
         data.push(0x04); // varint length of 1
         data.extend_from_slice(&1_i64.to_le_bytes());
 
-        assert!(from_bytes::<ValSeq>(&data).is_err());
+        assert!(from_bytes::<ValSeq, _>(&mut data.as_slice()).is_err());
 
         data.drain(14..);
     }
@@ -56,5 +56,5 @@ fn seq_with_non_zero_len_must_have_correct_marker() {
     data.push(0x80 + 1);
     data.push(0x04); // varint length
     data.extend_from_slice(&1_i64.to_le_bytes());
-    (from_bytes::<ValSeq>(&data).unwrap());
+    (from_bytes::<ValSeq, _>(&mut data.as_slice()).unwrap());
 }

net/epee-encoding/tests/stack_overflow.rs

@@ -735,7 +735,7 @@ fn stack_overlfow() {
         8, 7, 1, 100, 12, 8, 3, 118, 97, 108, 8, 7,
     ];
 
-    let obj: Result<Q, _> = from_bytes(&bytes);
+    let obj: Result<Q, _> = from_bytes(&mut bytes.as_slice());
 
     assert!(obj.is_err())
 }

net/fixed-bytes/src/lib.rs

@@ -41,6 +41,7 @@ impl Debug for FixedByteError {
 ///
 /// Internally this is just a wrapper around [`Bytes`], with the constructors checking that the length is equal to [`N`].
 /// This implements [`Deref`] with the target being `[u8; N]`.
+#[derive(Debug, Clone, Eq, PartialEq)]
 pub struct ByteArray<const N: usize>(Bytes);
 
 impl<const N: usize> ByteArray<N> {
@@ -49,6 +50,12 @@ impl<const N: usize> ByteArray<N> {
     }
 }
 
+impl<const N: usize> From<[u8; N]> for ByteArray<N> {
+    fn from(value: [u8; N]) -> Self {
+        ByteArray(Bytes::copy_from_slice(&value))
+    }
+}
+
 impl<const N: usize> Deref for ByteArray<N> {
     type Target = [u8; N];
 
@@ -68,6 +75,18 @@ impl<const N: usize> TryFrom<Bytes> for ByteArray<N> {
     }
 }
 
+impl<const N: usize> TryFrom<Vec<u8>> for ByteArray<N> {
+    type Error = FixedByteError;
+
+    fn try_from(value: Vec<u8>) -> Result<Self, Self::Error> {
+        if value.len() != N {
+            return Err(FixedByteError::InvalidLength);
+        }
+        Ok(ByteArray(Bytes::from(value)))
+    }
+}
+
+#[derive(Debug, Clone, Eq, PartialEq)]
 pub struct ByteArrayVec<const N: usize>(Bytes);
 
 impl<const N: usize> ByteArrayVec<N> {

net/levin/src/codec.rs

@@ -17,7 +17,7 @@
 
 use std::marker::PhantomData;
 
-use bytes::{Buf, BufMut, BytesMut};
+use bytes::{Buf, BufMut, Bytes, BytesMut};
 use tokio_util::codec::{Decoder, Encoder};
 
 use crate::{
@@ -111,7 +111,7 @@ impl<C: LevinCommand> Decoder for LevinBucketCodec<C> {
 
                     return Ok(Some(Bucket {
                         header,
-                        body: src.copy_to_bytes(body_len).into(),
+                        body: src.copy_to_bytes(body_len),
                     }));
                 }
             }
@@ -138,7 +138,7 @@ impl<C: LevinCommand> Encoder<Bucket<C>> for LevinBucketCodec<C> {
 enum MessageState<C> {
     #[default]
     WaitingForBucket,
-    WaitingForRestOfFragment(Vec<u8>, MessageType, C),
+    WaitingForRestOfFragment(Vec<Bytes>, MessageType, C),
 }
 
 /// A tokio-codec for levin messages or in other words the decoded body
@@ -167,7 +167,7 @@ impl<T: LevinBody> Decoder for LevinMessageCodec<T> {
         loop {
             match &mut self.state {
                 MessageState::WaitingForBucket => {
-                    let Some(bucket) = self.bucket_codec.decode(src)? else {
+                    let Some(mut bucket) = self.bucket_codec.decode(src)? else {
                         return Ok(None);
                     };
 
@@ -199,7 +199,7 @@ impl<T: LevinBody> Decoder for LevinMessageCodec<T> {
                         let _ = std::mem::replace(
                             &mut self.state,
                             MessageState::WaitingForRestOfFragment(
-                                bucket.body.to_vec(),
+                                vec![bucket.body],
                                 message_type,
                                 bucket.header.command,
                             ),
@@ -209,7 +209,7 @@ impl<T: LevinBody> Decoder for LevinMessageCodec<T> {
                     }
 
                     return Ok(Some(T::decode_message(
-                        &bucket.body,
+                        &mut bucket.body,
                         message_type,
                         bucket.header.command,
                     )?));
@@ -257,16 +257,23 @@ impl<T: LevinBody> Decoder for LevinMessageCodec<T> {
                         ));
                     }
 
-                    bytes.append(&mut bucket.body.to_vec());
+                    bytes.push(bucket.body);
 
                     if flags.is_end_fragment() {
-                        let MessageState::WaitingForRestOfFragment(bytes, ty, command) =
+                        let MessageState::WaitingForRestOfFragment(mut bytes, ty, command) =
                             std::mem::replace(&mut self.state, MessageState::WaitingForBucket)
                         else {
                             unreachable!();
                         };
 
-                        return Ok(Some(T::decode_message(&bytes, ty, command)?));
+                        // TODO: this doesn't seem very efficient but I can't think of a better way.
+                        bytes.reverse();
+                        let mut byte_vec: Box<dyn Buf> = Box::new(bytes.pop().unwrap());
+                        for bytes in bytes {
+                            byte_vec = Box::new(byte_vec.chain(bytes));
+                        }
+
+                        return Ok(Some(T::decode_message(&mut byte_vec, ty, command)?));
                     }
                 }
             }

net/levin/src/lib.rs

@@ -41,6 +41,7 @@ pub use header::BucketHead;
 
 use std::fmt::Debug;
 
+use bytes::{Buf, Bytes};
 use thiserror::Error;
 
 const MONERO_PROTOCOL_VERSION: u32 = 1;
@@ -102,7 +103,7 @@ pub struct Bucket<C> {
     /// The bucket header
     pub header: BucketHead<C>,
     /// The bucket body
-    pub body: Vec<u8>,
+    pub body: Bytes,
 }
 
 /// An enum representing if the message is a request, response or notification.
@@ -158,7 +159,7 @@ pub struct BucketBuilder<C> {
     command: Option<C>,
     return_code: Option<i32>,
     protocol_version: Option<u32>,
-    body: Option<Vec<u8>>,
+    body: Option<Bytes>,
 }
 
 impl<C> Default for BucketBuilder<C> {
@@ -195,7 +196,7 @@ impl<C: LevinCommand> BucketBuilder<C> {
         self.protocol_version = Some(version)
     }
 
-    pub fn set_body(&mut self, body: Vec<u8>) {
+    pub fn set_body(&mut self, body: Bytes) {
         self.body = Some(body)
     }
 
@@ -222,14 +223,14 @@ pub trait LevinBody: Sized {
     type Command: LevinCommand;
 
     /// Decodes the message from the data in the header
-    fn decode_message(
-        body: &[u8],
+    fn decode_message<B: Buf>(
+        body: &mut B,
         typ: MessageType,
         command: Self::Command,
     ) -> Result<Self, BucketError>;
 
     /// Encodes the message
-    fn encode(&self, builder: &mut BucketBuilder<Self::Command>) -> Result<(), BucketError>;
+    fn encode(self, builder: &mut BucketBuilder<Self::Command>) -> Result<(), BucketError>;
 }
 
 /// The levin commands.

net/monero-wire/Cargo.toml

@@ -9,9 +9,10 @@ repository = "https://github.com/SyntheticBird45/cuprate/tree/main/net/monero-wi
 
 [dependencies]
 levin-cuprate = {path="../levin"}
-monero-epee-bin-serde = { workspace = true, features = ["container_as_blob"] }
-serde = { workspace = true, features = ["derive", "std"]}
-serde_bytes = { workspace = true, features = ["std"]}
+epee-encoding = { path = "../epee-encoding" }
+fixed-bytes = { path = "../fixed-bytes" }
+
+bytes = { workspace = true }
 thiserror = { workspace = true }
 
 [dev-dependencies]

net/monero-wire/src/lib.rs

@@ -24,7 +24,6 @@
 
 pub mod network_address;
 pub mod p2p;
-mod serde_helpers;
 
 pub use levin_cuprate::BucketError;
 pub use network_address::{NetZone, NetworkAddress};

net/monero-wire/src/network_address.rs

@@ -17,10 +17,10 @@
 //! Monero network. Core Monero has 4 main addresses: IPv4, IPv6, Tor,
 //! I2p. Currently this module only has IPv(4/6).
 //!
+use bytes::BufMut;
+use epee_encoding::{EpeeObject, EpeeValue};
 use std::{hash::Hash, net, net::SocketAddr};
 
-use serde::{Deserialize, Serialize};
-
 mod serde_helper;
 use serde_helper::*;
 
@@ -33,13 +33,23 @@ pub enum NetZone {
 
 /// A network address which can be encoded into the format required
 /// to send to other Monero peers.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
-#[serde(try_from = "TaggedNetworkAddress")]
-#[serde(into = "TaggedNetworkAddress")]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub enum NetworkAddress {
     Clear(SocketAddr),
 }
 
+impl EpeeObject for NetworkAddress {
+    type Builder = TaggedNetworkAddress;
+
+    fn number_of_fields(&self) -> u64 {
+        2
+    }
+
+    fn write_fields<B: BufMut>(self, w: &mut B) -> epee_encoding::Result<()> {
+        TaggedNetworkAddress::from(self).write(w)
+    }
+}
+
 impl NetworkAddress {
     pub fn get_zone(&self) -> NetZone {
         match self {

net/monero-wire/src/network_address/serde_helper.rs

@@ -1,20 +1,53 @@
+use bytes::Buf;
 use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
 
-use serde::{Deserialize, Serialize};
+use epee_encoding::{epee_object, EpeeObjectBuilder};
 use thiserror::Error;
 
 use crate::NetworkAddress;
 
-#[derive(Serialize, Deserialize)]
-pub(crate) struct TaggedNetworkAddress {
-    #[serde(rename = "type")]
-    ty: u8,
-    addr: AllFieldsNetworkAddress,
+#[derive(Default)]
+pub struct TaggedNetworkAddress {
+    ty: Option<u8>,
+    addr: Option<AllFieldsNetworkAddress>,
+}
+
+epee_object!(
+    TaggedNetworkAddress,
+    ty: Option<u8>,
+    addr: Option<AllFieldsNetworkAddress>,
+);
+
+impl EpeeObjectBuilder<NetworkAddress> for TaggedNetworkAddress {
+    fn add_field<B: Buf>(&mut self, name: &str, b: &mut B) -> epee_encoding::Result<bool> {
+        match name {
+            "type" => {
+                if std::mem::replace(&mut self.ty, Some(epee_encoding::read_epee_value(b)?))
+                    .is_some()
+                {
+                    return Err(epee_encoding::Error::Format("Duplicate field in data."));
+                }
+            }
+            "addr" => {
+                if std::mem::replace(&mut self.addr, epee_encoding::read_epee_value(b)?).is_some() {
+                    return Err(epee_encoding::Error::Format("Duplicate field in data."));
+                }
+            }
+            _ => return Ok(false),
+        }
+
+        Ok(true)
+    }
+
+    fn finish(self) -> epee_encoding::Result<NetworkAddress> {
+        self.try_into()
+            .map_err(|_| epee_encoding::Error::Value("Invalid network address"))
+    }
 }
 
 #[derive(Error, Debug)]
 #[error("Invalid network address")]
-pub(crate) struct InvalidNetworkAddress;
+pub struct InvalidNetworkAddress;
 
 impl TryFrom<TaggedNetworkAddress> for NetworkAddress {
     type Error = InvalidNetworkAddress;
@@ -22,7 +55,8 @@ impl TryFrom<TaggedNetworkAddress> for NetworkAddress {
     fn try_from(value: TaggedNetworkAddress) -> Result<Self, Self::Error> {
         value
             .addr
-            .try_into_network_address(value.ty)
+            .ok_or(InvalidNetworkAddress)?
+            .try_into_network_address(value.ty.ok_or(InvalidNetworkAddress)?)
             .ok_or(InvalidNetworkAddress)
     }
 }
@@ -32,36 +66,40 @@ impl From<NetworkAddress> for TaggedNetworkAddress {
         match value {
             NetworkAddress::Clear(addr) => match addr {
                 SocketAddr::V4(addr) => TaggedNetworkAddress {
-                    ty: 1,
-                    addr: AllFieldsNetworkAddress {
+                    ty: Some(1),
+                    addr: Some(AllFieldsNetworkAddress {
                         m_ip: Some(u32::from_be_bytes(addr.ip().octets())),
                         m_port: Some(addr.port()),
                         ..Default::default()
-                    },
+                    }),
                 },
                 SocketAddr::V6(addr) => TaggedNetworkAddress {
-                    ty: 2,
-                    addr: AllFieldsNetworkAddress {
+                    ty: Some(2),
+                    addr: Some(AllFieldsNetworkAddress {
                         addr: Some(addr.ip().octets()),
                         m_port: Some(addr.port()),
                         ..Default::default()
-                    },
+                    }),
                 },
             },
         }
     }
 }
 
-#[derive(Serialize, Deserialize, Default)]
+#[derive(Default)]
 struct AllFieldsNetworkAddress {
-    #[serde(skip_serializing_if = "Option::is_none")]
     m_ip: Option<u32>,
-    #[serde(skip_serializing_if = "Option::is_none")]
     m_port: Option<u16>,
-    #[serde(skip_serializing_if = "Option::is_none")]
     addr: Option<[u8; 16]>,
 }
 
+epee_object!(
+    AllFieldsNetworkAddress,
+    m_ip: Option<u32>,
+    m_port: Option<u16>,
+    addr: Option<[u8; 16]>,
+);
+
 impl AllFieldsNetworkAddress {
     fn try_into_network_address(self, ty: u8) -> Option<NetworkAddress> {
         Some(match ty {

net/monero-wire/src/p2p.rs

@@ -16,6 +16,7 @@
 //! This module defines a Monero `Message` enum which contains
 //! every possible Monero network message (levin body)
 
+use bytes::{Buf, Bytes, BytesMut};
 use levin_cuprate::{
     BucketBuilder, BucketError, LevinBody, LevinCommand as LevinCommandTrait, MessageType,
 };
@@ -150,23 +151,23 @@ impl From<LevinCommand> for u32 {
     }
 }
 
-fn decode_message<T: serde::de::DeserializeOwned, Ret>(
+fn decode_message<B: Buf, T: epee_encoding::EpeeObject, Ret>(
     ret: impl FnOnce(T) -> Ret,
-    buf: &[u8],
+    buf: &mut B,
 ) -> Result<Ret, BucketError> {
-    let t = monero_epee_bin_serde::from_bytes(buf)
-        .map_err(|e| BucketError::BodyDecodingError(e.into()))?;
+    let t = epee_encoding::from_bytes(buf).map_err(|e| BucketError::BodyDecodingError(e.into()))?;
     Ok(ret(t))
 }
 
-fn build_message<T: serde::Serialize>(
+fn build_message<T: epee_encoding::EpeeObject>(
     id: LevinCommand,
-    val: &T,
+    val: T,
     builder: &mut BucketBuilder<LevinCommand>,
 ) -> Result<(), BucketError> {
     builder.set_command(id);
     builder.set_body(
-        monero_epee_bin_serde::to_bytes(val)
+        epee_encoding::to_bytes(val)
+            .map(BytesMut::freeze)
             .map_err(|e| BucketError::BodyDecodingError(e.into()))?,
     );
     Ok(())
@@ -201,7 +202,7 @@ impl ProtocolMessage {
         }
     }
 
-    fn decode(buf: &[u8], command: LevinCommand) -> Result<Self, BucketError> {
+    fn decode<B: Buf>(buf: &mut B, command: LevinCommand) -> Result<Self, BucketError> {
         use LevinCommand as C;
 
         Ok(match command {
@@ -220,7 +221,7 @@ impl ProtocolMessage {
         })
     }
 
-    fn build(&self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
+    fn build(self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
         use LevinCommand as C;
 
         match self {
@@ -236,7 +237,7 @@ impl ProtocolMessage {
             }
             ProtocolMessage::ChainRequest(val) => build_message(C::ChainRequest, val, builder)?,
             ProtocolMessage::ChainEntryResponse(val) => {
-                build_message(C::ChainResponse, &val, builder)?
+                build_message(C::ChainResponse, val, builder)?
             }
             ProtocolMessage::NewFluffyBlock(val) => build_message(C::NewFluffyBlock, val, builder)?,
             ProtocolMessage::FluffyMissingTransactionsRequest(val) => {
@@ -269,7 +270,7 @@ impl RequestMessage {
         }
     }
 
-    fn decode(buf: &[u8], command: LevinCommand) -> Result<Self, BucketError> {
+    fn decode<B: Buf>(buf: &mut B, command: LevinCommand) -> Result<Self, BucketError> {
         use LevinCommand as C;
 
         Ok(match command {
@@ -281,7 +282,7 @@ impl RequestMessage {
         })
     }
 
-    fn build(&self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
+    fn build(self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
         use LevinCommand as C;
 
         match self {
@@ -289,11 +290,11 @@ impl RequestMessage {
             RequestMessage::TimedSync(val) => build_message(C::TimedSync, val, builder)?,
             RequestMessage::Ping => {
                 builder.set_command(C::Ping);
-                builder.set_body(Vec::new());
+                builder.set_body(Bytes::new());
             }
             RequestMessage::SupportFlags => {
                 builder.set_command(C::SupportFlags);
-                builder.set_body(Vec::new());
+                builder.set_body(Bytes::new());
             }
         }
         Ok(())
@@ -319,7 +320,7 @@ impl ResponseMessage {
         }
     }
 
-    fn decode(buf: &[u8], command: LevinCommand) -> Result<Self, BucketError> {
+    fn decode<B: Buf>(buf: &mut B, command: LevinCommand) -> Result<Self, BucketError> {
         use LevinCommand as C;
 
         Ok(match command {
@@ -331,7 +332,7 @@ impl ResponseMessage {
         })
     }
 
-    fn build(&self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
+    fn build(self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
         use LevinCommand as C;
 
         match self {
@@ -375,8 +376,8 @@ impl Message {
 impl LevinBody for Message {
     type Command = LevinCommand;
 
-    fn decode_message(
-        body: &[u8],
+    fn decode_message<B: Buf>(
+        body: &mut B,
         typ: MessageType,
         command: LevinCommand,
     ) -> Result<Self, BucketError> {
@@ -387,7 +388,7 @@ impl LevinBody for Message {
         })
     }
 
-    fn encode(&self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
+    fn encode(self, builder: &mut BucketBuilder<LevinCommand>) -> Result<(), BucketError> {
         match self {
             Message::Protocol(pro) => {
                 builder.set_message_type(MessageType::Notification);

net/monero-wire/src/p2p/admin.rs

@@ -18,12 +18,13 @@
 //! Admin message requests must be responded to in order unlike
 //! protocol messages.   
 
-use serde::{Deserialize, Serialize};
+use bytes::Bytes;
+use epee_encoding::epee_object;
 
 use super::common::{BasicNodeData, CoreSyncData, PeerListEntryBase, PeerSupportFlags};
 
 /// A Handshake Request
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct HandshakeRequest {
     /// Basic Node Data
     pub node_data: BasicNodeData,
@@ -31,54 +32,87 @@ pub struct HandshakeRequest {
     pub payload_data: CoreSyncData,
 }
 
+epee_object!(
+    HandshakeRequest,
+    node_data: BasicNodeData,
+    payload_data: CoreSyncData,
+);
+
 /// A Handshake Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct HandshakeResponse {
     /// Basic Node Data
     pub node_data: BasicNodeData,
     /// Core Sync Data
     pub payload_data: CoreSyncData,
     /// PeerList
-    #[serde(default = "Vec::new")]
     pub local_peerlist_new: Vec<PeerListEntryBase>,
 }
 
+epee_object!(
+    HandshakeResponse,
+    node_data: BasicNodeData,
+    payload_data: CoreSyncData,
+    local_peerlist_new: Vec<PeerListEntryBase>,
+);
+
 /// A TimedSync Request
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct TimedSyncRequest {
     /// Core Sync Data
     pub payload_data: CoreSyncData,
 }
 
+epee_object!(
+    TimedSyncRequest,
+    payload_data: CoreSyncData,
+);
+
 /// A TimedSync Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct TimedSyncResponse {
     /// Core Sync Data
     pub payload_data: CoreSyncData,
     /// PeerList
-    #[serde(default = "Vec::new")]
     pub local_peerlist_new: Vec<PeerListEntryBase>,
 }
 
+epee_object!(
+    TimedSyncResponse,
+    payload_data: CoreSyncData,
+    local_peerlist_new: Vec<PeerListEntryBase>,
+);
+
 /// The status field of an okay ping response
-pub const PING_OK_RESPONSE_STATUS_TEXT: &str = "OK";
+pub const PING_OK_RESPONSE_STATUS_TEXT: Bytes = Bytes::from_static("OK".as_bytes());
 
 /// A Ping Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PingResponse {
     /// Status: should be `PING_OK_RESPONSE_STATUS_TEXT`
-    pub status: String,
+    pub status: Bytes,
     /// Peer ID
     pub peer_id: u64,
 }
 
+epee_object!(
+    PingResponse,
+    status: Bytes,
+    peer_id: u64,
+);
+
 /// A Support Flags Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct SupportFlagsResponse {
     /// Support Flags
     pub support_flags: PeerSupportFlags,
 }
 
+epee_object!(
+    SupportFlagsResponse,
+    support_flags: PeerSupportFlags as u32,
+);
+
 #[cfg(test)]
 mod tests {
 
@@ -101,12 +135,13 @@ mod tests {
             186, 15, 178, 70, 173, 170, 187, 31, 70, 50, 227, 11, 116, 111, 112, 95, 118, 101, 114,
             115, 105, 111, 110, 8, 1,
         ];
-        let handshake: HandshakeRequest = monero_epee_bin_serde::from_bytes(bytes).unwrap();
+        let handshake: HandshakeRequest = epee_encoding::from_bytes(&mut &bytes[..]).unwrap();
         let basic_node_data = BasicNodeData {
             my_port: 0,
             network_id: [
                 18, 48, 241, 113, 97, 4, 65, 97, 23, 49, 0, 130, 22, 161, 161, 16,
-            ],
+            ]
+            .into(),
             peer_id: 9671405426614699871,
             support_flags: PeerSupportFlags::from(1_u32),
             rpc_port: 0,
@@ -128,9 +163,8 @@ mod tests {
         assert_eq!(basic_node_data, handshake.node_data);
         assert_eq!(core_sync_data, handshake.payload_data);
 
-        let encoded_bytes = monero_epee_bin_serde::to_bytes(&handshake).unwrap();
-        let handshake_2: HandshakeRequest =
-            monero_epee_bin_serde::from_bytes(encoded_bytes).unwrap();
+        let mut encoded_bytes = epee_encoding::to_bytes(handshake.clone()).unwrap();
+        let handshake_2: HandshakeRequest = epee_encoding::from_bytes(&mut encoded_bytes).unwrap();
 
         assert_eq!(handshake, handshake_2);
     }
@@ -906,13 +940,14 @@ mod tests {
             181, 216, 193, 135, 23, 186, 168, 207, 119, 86, 235, 11, 116, 111, 112, 95, 118, 101,
             114, 115, 105, 111, 110, 8, 16,
         ];
-        let handshake: HandshakeResponse = monero_epee_bin_serde::from_bytes(bytes).unwrap();
+        let handshake: HandshakeResponse = epee_encoding::from_bytes(&mut &bytes[..]).unwrap();
 
         let basic_node_data = BasicNodeData {
             my_port: 18080,
             network_id: [
                 18, 48, 241, 113, 97, 4, 65, 97, 23, 49, 0, 130, 22, 161, 161, 16,
-            ],
+            ]
+            .into(),
             peer_id: 6037804360359455404,
             support_flags: PeerSupportFlags::from(1_u32),
             rpc_port: 18089,
@@ -935,9 +970,8 @@ mod tests {
         assert_eq!(core_sync_data, handshake.payload_data);
         assert_eq!(250, handshake.local_peerlist_new.len());
 
-        let encoded_bytes = monero_epee_bin_serde::to_bytes(&handshake).unwrap();
-        let handshake_2: HandshakeResponse =
-            monero_epee_bin_serde::from_bytes(encoded_bytes).unwrap();
+        let mut encoded_bytes = epee_encoding::to_bytes(handshake.clone()).unwrap();
+        let handshake_2: HandshakeResponse = epee_encoding::from_bytes(&mut encoded_bytes).unwrap();
 
         assert_eq!(handshake, handshake_2);
     }

net/monero-wire/src/p2p/common.rs

@@ -15,15 +15,13 @@
 
 //! Common types that are used across multiple messages.
 
-use serde::{Deserialize, Serialize};
+use bytes::{Buf, BufMut, Bytes};
+use epee_encoding::{epee_object, EpeeValue, InnerMarker};
+use fixed_bytes::ByteArray;
 
-use crate::{
-    serde_helpers::{default_false, default_zero, serde_vec_bytes},
-    NetworkAddress,
-};
+use crate::NetworkAddress;
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(transparent)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct PeerSupportFlags(u32);
 
 impl From<u32> for PeerSupportFlags {
@@ -38,6 +36,12 @@ impl From<PeerSupportFlags> for u32 {
     }
 }
 
+impl<'a> From<&'a PeerSupportFlags> for &'a u32 {
+    fn from(value: &'a PeerSupportFlags) -> Self {
+        &value.0
+    }
+}
+
 impl PeerSupportFlags {
     //const FLUFFY_BLOCKS: u32 = 0b0000_0001;
 
@@ -53,51 +57,65 @@ impl From<u8> for PeerSupportFlags {
 }
 
 /// Basic Node Data, information on the connected peer
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct BasicNodeData {
     /// Port
     pub my_port: u32,
     /// The Network Id
-    pub network_id: [u8; 16],
+    pub network_id: ByteArray<16>,
     /// Peer ID
     pub peer_id: u64,
     /// The Peers Support Flags
     /// (If this is not in the message the default is 0)
-    #[serde(default = "default_zero")]
     pub support_flags: PeerSupportFlags,
     /// RPC Port
     /// (If this is not in the message the default is 0)
-    #[serde(default = "default_zero")]
     pub rpc_port: u16,
     /// RPC Credits Per Hash
     /// (If this is not in the message the default is 0)
-    #[serde(default = "default_zero")]
     pub rpc_credits_per_hash: u32,
 }
 
+epee_object! {
+    BasicNodeData,
+    my_port: u32,
+    network_id: ByteArray<16>,
+    peer_id: u64,
+    support_flags: PeerSupportFlags as u32 = 0_u32,
+    rpc_port: u16 = 0_u16,
+    rpc_credits_per_hash: u32 = 0_u32,
+}
+
 /// Core Sync Data, information on the sync state of a peer
-#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CoreSyncData {
     /// Cumulative Difficulty Low
     /// The lower 64 bits of the 128 bit cumulative difficulty
     pub cumulative_difficulty: u64,
     /// Cumulative Difficulty High
     /// The upper 64 bits of the 128 bit cumulative difficulty
-    #[serde(default = "default_zero")]
     pub cumulative_difficulty_top64: u64,
     /// Current Height of the peer
     pub current_height: u64,
     /// Pruning Seed of the peer
     /// (If this is not in the message the default is 0)
-    #[serde(default = "default_zero")]
     pub pruning_seed: u32,
     /// Hash of the top block
-    pub top_id: [u8; 32],
+    pub top_id: ByteArray<32>,
     /// Version of the top block
-    #[serde(default = "default_zero")]
     pub top_version: u8,
 }
 
+epee_object! {
+    CoreSyncData,
+    cumulative_difficulty: u64,
+    cumulative_difficulty_top64: u64 = 0_u64,
+    current_height: u64,
+    pruning_seed: u32 = 0_u32,
+    top_id: ByteArray<32>,
+    top_version: u8 = 0_u8,
+}
+
 impl CoreSyncData {
     pub fn new(
         cumulative_difficulty_128: u128,
@@ -113,7 +131,7 @@ impl CoreSyncData {
             cumulative_difficulty_top64,
             current_height,
             pruning_seed,
-            top_id,
+            top_id: top_id.into(),
             top_version,
         }
     }
@@ -127,26 +145,32 @@ impl CoreSyncData {
 
 /// PeerListEntryBase, information kept on a peer which will be entered
 /// in a peer list/store.
-#[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub struct PeerListEntryBase {
     /// The Peer Address
     pub adr: NetworkAddress,
     /// The Peer ID
     pub id: u64,
     /// The last Time The Peer Was Seen
-    #[serde(default = "default_zero")]
     pub last_seen: i64,
     /// The Pruning Seed
-    #[serde(default = "default_zero")]
     pub pruning_seed: u32,
     /// The RPC port
-    #[serde(default = "default_zero")]
     pub rpc_port: u16,
     /// The RPC credits per hash
-    #[serde(default = "default_zero")]
     pub rpc_credits_per_hash: u32,
 }
 
+epee_object! {
+    PeerListEntryBase,
+    adr: NetworkAddress,
+    id: u64,
+    last_seen: i64 = 0_i64,
+    pruning_seed: u32 = 0_u32,
+    rpc_port: u16 = 0_u16,
+    rpc_credits_per_hash: u32 = 0_u32,
+}
+
 impl std::hash::Hash for PeerListEntryBase {
     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
         // We only hash the adr so we can look this up in a HashSet.
@@ -155,22 +179,24 @@ impl std::hash::Hash for PeerListEntryBase {
 }
 
 /// A pruned tx with the hash of the missing prunable data
-#[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub struct PrunedTxBlobEntry {
     /// The Tx
-    #[serde(with = "serde_bytes")]
-    pub tx: Vec<u8>,
+    pub tx: Bytes,
     /// The Prunable Tx Hash
-    pub prunable_hash: [u8; 32],
+    pub prunable_hash: ByteArray<32>,
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
-#[serde(untagged)]
+epee_object!(
+    PrunedTxBlobEntry,
+    tx: Bytes,
+    prunable_hash: ByteArray<32>,
+);
+
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub enum TransactionBlobs {
     Pruned(Vec<PrunedTxBlobEntry>),
-    #[serde(with = "serde_vec_bytes")]
-    Normal(Vec<Vec<u8>>),
-    #[serde(skip_serializing)]
+    Normal(Vec<Bytes>),
     None,
 }
 
@@ -183,7 +209,7 @@ impl TransactionBlobs {
         }
     }
 
-    pub fn take_normal(self) -> Option<Vec<Vec<u8>>> {
+    pub fn take_normal(self) -> Option<Vec<Bytes>> {
         match self {
             TransactionBlobs::Normal(txs) => Some(txs),
             TransactionBlobs::Pruned(_) => None,
@@ -202,30 +228,57 @@ impl TransactionBlobs {
     pub fn is_empty(&self) -> bool {
         self.len() == 0
     }
-
-    fn none() -> TransactionBlobs {
-        TransactionBlobs::None
-    }
 }
 
 /// A Block that can contain transactions
-#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub struct BlockCompleteEntry {
     /// True if tx data is pruned
-    #[serde(default = "default_false")]
     pub pruned: bool,
     /// The Block
-    #[serde(with = "serde_bytes")]
-    pub block: Vec<u8>,
+    pub block: Bytes,
     /// The Block Weight/Size
-    #[serde(default = "default_zero")]
     pub block_weight: u64,
     /// The blocks txs
-    #[serde(skip_serializing_if = "TransactionBlobs::is_empty")]
-    #[serde(default = "TransactionBlobs::none")]
     pub txs: TransactionBlobs,
 }
 
+epee_object!(
+    BlockCompleteEntry,
+    pruned: bool = false,
+    block: Bytes,
+    block_weight: u64 = 0_u64,
+    txs: TransactionBlobs = TransactionBlobs::None => tx_blob_read, tx_blob_write, should_write_tx_blobs,
+);
+
+fn tx_blob_read<B: Buf>(b: &mut B) -> epee_encoding::Result<TransactionBlobs> {
+    let marker = epee_encoding::read_marker(b)?;
+    match marker.inner_marker {
+        InnerMarker::Object => Ok(TransactionBlobs::Pruned(Vec::read(b, &marker)?)),
+        InnerMarker::String => Ok(TransactionBlobs::Normal(Vec::read(b, &marker)?)),
+        _ => Err(epee_encoding::Error::Value("Invalid marker for tx blobs")),
+    }
+}
+
+fn tx_blob_write<B: BufMut>(
+    val: TransactionBlobs,
+    field_name: &str,
+    w: &mut B,
+) -> epee_encoding::Result<()> {
+    if should_write_tx_blobs(&val) {
+        match val {
+            TransactionBlobs::Normal(bytes) => epee_encoding::write_field(bytes, field_name, w)?,
+            TransactionBlobs::Pruned(obj) => epee_encoding::write_field(obj, field_name, w)?,
+            TransactionBlobs::None => (),
+        }
+    }
+    Ok(())
+}
+
+fn should_write_tx_blobs(val: &TransactionBlobs) -> bool {
+    !val.is_empty()
+}
+
 #[cfg(test)]
 mod tests {
 

net/monero-wire/src/p2p/protocol.rs

@@ -18,16 +18,15 @@
 //! Protocol message requests don't have to be responded to in order unlike
 //! admin messages.   
 
-use serde::{Deserialize, Serialize};
-use serde_bytes::ByteBuf;
+use bytes::Bytes;
 
-use monero_epee_bin_serde::container_as_blob;
+use epee_encoding::{container_as_blob::ContainerAsBlob, epee_object};
+use fixed_bytes::{ByteArray, ByteArrayVec};
 
 use super::common::BlockCompleteEntry;
-use crate::serde_helpers::*;
 
 /// A block that SHOULD have transactions
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct NewBlock {
     /// Block with txs
     pub b: BlockCompleteEntry,
@@ -35,63 +34,80 @@ pub struct NewBlock {
     pub current_blockchain_height: u64,
 }
 
+epee_object!(
+    NewBlock,
+    b: BlockCompleteEntry,
+    current_blockchain_height: u64,
+);
+
 /// New Tx Pool Transactions
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct NewTransactions {
     /// Tx Blobs
-    pub txs: Vec<ByteBuf>,
+    pub txs: Vec<Bytes>,
     /// Dandelionpp true if fluff - backwards compatible mode is fluff
-    #[serde(default = "default_true")]
     pub dandelionpp_fluff: bool,
     /// Padding
-    #[serde(rename = "_")]
-    #[serde(with = "serde_bytes")]
-    pub padding: Vec<u8>,
+    pub padding: Bytes,
 }
 
+epee_object!(
+    NewTransactions,
+    txs: Vec<Bytes>,
+    dandelionpp_fluff: bool = true,
+    padding("_"): Bytes,
+);
+
 /// A Request For Blocks
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GetObjectsRequest {
     /// Block hashes we want
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
-    pub blocks: Vec<[u8; 32]>,
+    pub blocks: ByteArrayVec<32>,
     /// Pruned
-    #[serde(default = "default_false")]
     pub pruned: bool,
 }
 
+epee_object!(
+    GetObjectsRequest,
+    blocks: ByteArrayVec<32>,
+    pruned: bool = false,
+);
+
 /// A Blocks Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GetObjectsResponse {
     /// Blocks
-    // We dont need to give this a default value as there always is at least 1 block
     pub blocks: Vec<BlockCompleteEntry>,
     /// Missed IDs
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
-    pub missed_ids: Vec<[u8; 32]>,
+    pub missed_ids: ByteArrayVec<32>,
     /// The height of the peers blockchain
     pub current_blockchain_height: u64,
 }
 
+epee_object!(
+    GetObjectsResponse,
+    blocks: Vec<BlockCompleteEntry>,
+    missed_ids: ByteArrayVec<32>,
+    current_blockchain_height: u64,
+);
+
 /// A Chain Request
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ChainRequest {
     /// Block IDs
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
-    pub block_ids: Vec<[u8; 32]>,
+    pub block_ids: ByteArrayVec<32>,
     /// Prune
-    #[serde(default = "default_false")]
     pub prune: bool,
 }
 
+epee_object!(
+    ChainRequest,
+    block_ids: ByteArrayVec<32>,
+    prune: bool = false,
+);
+
 /// A Chain Response
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ChainResponse {
     /// Start Height
     pub start_height: u64,
@@ -100,26 +116,28 @@ pub struct ChainResponse {
     /// Cumulative Difficulty Low
     pub cumulative_difficulty: u64,
     /// Cumulative Difficulty High
-    #[serde(default = "default_zero")]
     pub cumulative_difficulty_top64: u64,
     /// Block IDs
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
-    pub m_block_ids: Vec<[u8; 32]>,
+    pub m_block_ids: ByteArrayVec<32>,
     /// Block Weights
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
     pub m_block_weights: Vec<u64>,
     /// The first Block in the response
-    #[serde(default = "Vec::new")]
-    #[serde(with = "serde_bytes")]
-    pub first_block: Vec<u8>,
+    pub first_block: Bytes,
 }
 
+epee_object!(
+    ChainResponse,
+    start_height: u64,
+    total_height: u64,
+    cumulative_difficulty: u64,
+    cumulative_difficulty_top64: u64 = 0_u64,
+    m_block_ids: ByteArrayVec<32>,
+    m_block_weights: Vec<u64> as ContainerAsBlob<u64>,
+    first_block: Bytes,
+);
+
 /// A Block that doesn't have transactions unless requested
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct NewFluffyBlock {
     /// Block which might have transactions
     pub b: BlockCompleteEntry,
@@ -127,30 +145,42 @@ pub struct NewFluffyBlock {
     pub current_blockchain_height: u64,
 }
 
+epee_object!(
+    NewFluffyBlock,
+    b: BlockCompleteEntry,
+    current_blockchain_height: u64,
+);
+
 /// A request for Txs we are missing from our TxPool
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct FluffyMissingTransactionsRequest {
     /// The Block we are missing the Txs in
-    pub block_hash: [u8; 32],
+    pub block_hash: ByteArray<32>,
     /// The current blockchain height
     pub current_blockchain_height: u64,
     /// The Tx Indices
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
     pub missing_tx_indices: Vec<u64>,
 }
 
+epee_object!(
+    FluffyMissingTransactionsRequest,
+    block_hash: ByteArray<32>,
+    current_blockchain_height: u64,
+    missing_tx_indices: Vec<u64> as ContainerAsBlob<u64>,
+);
+
 /// TxPoolCompliment
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GetTxPoolCompliment {
     /// Tx Hashes
-    #[serde(default = "Vec::new")]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
-    #[serde(with = "container_as_blob")]
-    pub hashes: Vec<[u8; 32]>,
+    pub hashes: ByteArrayVec<32>,
 }
 
+epee_object!(
+    GetTxPoolCompliment,
+    hashes: ByteArrayVec<32>,
+);
+
 #[cfg(test)]
 mod tests {
 
@@ -667,13 +697,13 @@ mod tests {
             248, 248, 91, 110, 107, 144, 12, 175, 253, 21, 121, 28,
         ];
 
-        let new_transactions: NewTransactions = monero_epee_bin_serde::from_bytes(bytes).unwrap();
+        let new_transactions: NewTransactions = epee_encoding::from_bytes(&mut &bytes[..]).unwrap();
 
         assert_eq!(4, new_transactions.txs.len());
 
-        let encoded_bytes = monero_epee_bin_serde::to_bytes(&new_transactions).unwrap();
+        let mut encoded_bytes = epee_encoding::to_bytes(new_transactions.clone()).unwrap();
         let new_transactions_2: NewTransactions =
-            monero_epee_bin_serde::from_bytes(encoded_bytes).unwrap();
+            epee_encoding::from_bytes(&mut encoded_bytes).unwrap();
 
         assert_eq!(new_transactions, new_transactions_2);
     }
@@ -1019,11 +1049,10 @@ mod tests {
             101, 110, 116, 95, 98, 108, 111, 99, 107, 99, 104, 97, 105, 110, 95, 104, 101, 105,
             103, 104, 116, 5, 209, 45, 42, 0, 0, 0, 0, 0,
         ];
-        let fluffy_block: NewFluffyBlock = monero_epee_bin_serde::from_bytes(bytes).unwrap();
+        let fluffy_block: NewFluffyBlock = epee_encoding::from_bytes(&mut &bytes[..]).unwrap();
 
-        let encoded_bytes = monero_epee_bin_serde::to_bytes(&fluffy_block).unwrap();
-        let fluffy_block_2: NewFluffyBlock =
-            monero_epee_bin_serde::from_bytes(encoded_bytes).unwrap();
+        let mut encoded_bytes = epee_encoding::to_bytes(fluffy_block.clone()).unwrap();
+        let fluffy_block_2: NewFluffyBlock = epee_encoding::from_bytes(&mut encoded_bytes).unwrap();
 
         assert_eq!(fluffy_block, fluffy_block_2);
     }

net/monero-wire/src/serde_helpers.rs

@@ -1,35 +0,0 @@
-pub(crate) fn default_false() -> bool {
-    false
-}
-
-pub(crate) fn default_true() -> bool {
-    true
-}
-
-pub(crate) fn default_zero<T: TryFrom<u8>>() -> T {
-    0.try_into()
-        .map_err(|_| "Couldn't fit 0 into integer type!")
-        .unwrap()
-}
-
-pub(crate) mod serde_vec_bytes {
-    use serde::{Deserialize, Deserializer, Serializer};
-    use serde_bytes::ByteBuf;
-
-    pub fn deserialize<'de, D>(d: D) -> Result<Vec<Vec<u8>>, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        Ok(Vec::<ByteBuf>::deserialize(d)?
-            .into_iter()
-            .map(ByteBuf::into_vec)
-            .collect())
-    }
-
-    pub fn serialize<S>(t: &[Vec<u8>], s: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        s.collect_seq(t.iter())
-    }
-}

p2p/monero-p2p/tests/handshake.rs

@@ -32,7 +32,7 @@ async fn handshake_cuprate_to_cuprate() {
 
     let our_basic_node_data_1 = BasicNodeData {
         my_port: 0,
-        network_id: Network::Mainnet.network_id(),
+        network_id: Network::Mainnet.network_id().into(),
         peer_id: 87980,
         // TODO: This fails if the support flags are empty (0)
         support_flags: PeerSupportFlags::from(1_u32),
@@ -113,7 +113,7 @@ async fn handshake() {
 
     let our_basic_node_data = BasicNodeData {
         my_port: 0,
-        network_id: Network::Mainnet.network_id(),
+        network_id: Network::Mainnet.network_id().into(),
         peer_id: 87980,
         support_flags: PeerSupportFlags::from(1_u32),
         rpc_port: 0,