feat(p2p): add rpc messages and codec

Makefile

@@ -28,4 +28,11 @@ test-spec-integrated: ## Run spec tests in integrated mode
 .PHONY: test-spec-modular
 test-spec-modular: ## Run spec tests in modular mode
 	test/spec-tests/remote/run-spec-tests.sh
-
+
+.PHONY: test-coverage-all
+test-coverage-all: ## Run tests and display coverage
+	cargo llvm-cov nextest --all-features --open --workspace
+
+.PHONY: test-coverage
+test-coverage: ## Run tests and display coverage for a single package
+	cargo llvm-cov nextest --all-features --open -p $(package)

crates/network/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "rundler-network"
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+rundler-types = { path = "../types" }
+
+ethereum_ssz = "0.5.3"
+ethereum_ssz_derive = "0.5.3"
+ethers.workspace = true
+snap = "1.1.0"
+ssz_types = "0.5.4"
+tokio-util = { workspace = true, features = ["codec", "compat"] }
+thiserror.workspace = true
+tracing.workspace = true
+unsigned-varint = { version = "0.7.2", features = ["codec"] }
+
+[dependencies.libp2p]
+version = "0.52.3"
+default-features = false
+features = ["tokio", "noise", "macros", "tcp", "identify", "yamux", "secp256k1"]
+
+[dev-dependencies]
+rand.workspace = true

crates/network/src/lib.rs

@@ -0,0 +1,29 @@
+// This file is part of Rundler.
+//
+// Rundler is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Lesser General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later version.
+//
+// Rundler is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with Rundler.
+// If not, see https://www.gnu.org/licenses/.
+
+#![warn(missing_docs, unreachable_pub)]
+#![deny(unused_must_use, rust_2018_idioms)]
+#![doc(test(
+    no_crate_inject,
+    attr(deny(warnings, rust_2018_idioms), allow(dead_code, unused_variables))
+))]
+
+//! Implementation of the ERC-4337 Bundler P2P Network Protocol.
+//! See the [specification](https://github.com/eth-infinitism/bundler-spec/blob/main/p2p-specs/p2p-interface.md) for more details.
+//!
+//! Lots of inspiration for the components of this implementation were taken from the Lighthouse implementation
+//! of the Ethereum consensus layer p2p protocol. See [here](https://github.com/sigp/lighthouse/) for more details.
+
+// TODO(danc): remove this before release
+#[allow(dead_code)]
+mod rpc;