[WIP] prototype Overlay V2 in Rust

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 resolver = "2"
-members = ["src/rust"]
+members = ["src/rust", "overlay"]
+exclude = ["overlay-stub"]
 
 [profile.release]
 codegen-units = 1

Makefile.am

@@ -68,6 +68,47 @@ tracy-csvexport: $(TRACY_CSVEXPORT_BUILD)/csvexport-release
 bin_PROGRAMS += tracy-csvexport
 endif # USE_TRACY_CSVEXPORT
 
+# Rust overlay build
+if USE_RUST_OVERLAY
+RUST_OVERLAY_DIR=$(top_srcdir)/overlay
+RUST_OVERLAY_TARGET=$(top_srcdir)/target
+
+# Determine build profile based on configure options
+if ENABLE_NEXT_PROTOCOL_VERSION_UNSAFE_FOR_PRODUCTION
+RUST_BUILD_PROFILE=debug
+RUST_PROFILE_FLAG=
+RUST_PROFILE_DIR=debug
+else
+RUST_BUILD_PROFILE=release
+RUST_PROFILE_FLAG=--release
+RUST_PROFILE_DIR=release
+endif
+
+RUST_OVERLAY_BINARY=$(RUST_OVERLAY_TARGET)/$(RUST_PROFILE_DIR)/stellar-overlay
+
+$(RUST_OVERLAY_BINARY): $(wildcard $(RUST_OVERLAY_DIR)/src/*.rs) $(wildcard $(RUST_OVERLAY_DIR)/src/**/*.rs) $(RUST_OVERLAY_DIR)/Cargo.toml
+	@echo "Building Rust overlay ($(RUST_BUILD_PROFILE))..."
+	cd $(RUST_OVERLAY_DIR) && $(CARGO) build $(RUST_PROFILE_FLAG)
+
+stellar-overlay: $(RUST_OVERLAY_BINARY)
+	cp -v $< $@
+
+bin_PROGRAMS += stellar-overlay
+
+# Clean Rust build artifacts
+clean-rust:
+	cd $(RUST_OVERLAY_DIR) && $(CARGO) clean
+
+clean-local: clean-rust
+
+# Run Rust tests
+check-rust:
+	cd $(RUST_OVERLAY_DIR) && $(CARGO) test
+
+check-local: check-rust
+
+endif # USE_RUST_OVERLAY
+
 EXTRA_DIST = stellar-core.supp test/testnet/multitail.conf	\
 	test/testnet/run-test.sh README.md make-mks
 

configure.ac

@@ -418,6 +418,11 @@ AC_ARG_ENABLE(next-protocol-version-unsafe-for-production,
 AM_CONDITIONAL(ENABLE_NEXT_PROTOCOL_VERSION_UNSAFE_FOR_PRODUCTION,
     [test x$enable_next_protocol_version_unsafe_for_production = xyes])
 
+AC_ARG_ENABLE(rust-overlay,
+    AS_HELP_STRING([--disable-rust-overlay],
+        [Disable building the Rust overlay (libp2p-based P2P networking)]))
+AM_CONDITIONAL(USE_RUST_OVERLAY, [test x$enable_rust_overlay != xno])
+
 AC_ARG_ENABLE(libunwind,
     AS_HELP_STRING([--disable-libunwind],
         [Disable backtraces using libunwind]))

docker/Dockerfile

@@ -8,6 +8,8 @@ MAINTAINER Siddharth Suresh <siddharth@stellar.org>
 
 EXPOSE 11625
 EXPOSE 11626
+# QUIC port for Rust overlay (peer_port + 1000, UDP)
+EXPOSE 12625/udp
 
 VOLUME /data
 VOLUME /postgresql-unix-sockets

docker/Dockerfile.testing

@@ -38,6 +38,9 @@ RUN apt-get update && \
     apt-get -y install libunwind-20 postgresql curl sqlite3 iproute2 libc++abi1-20 libc++1-20
 
 COPY --from=buildstage /usr/local/bin/stellar-core /usr/local/bin/stellar-core
+COPY --from=buildstage /usr/local/bin/stellar-overlay /usr/local/bin/stellar-overlay
 EXPOSE 11625
 EXPOSE 11626
+# QUIC port for Rust overlay (peer_port + 1000, UDP)
+EXPOSE 12625/udp
 CMD stellar-core