feat(node): wire P2P gossip channel to RPC sendRawTx and block announce

CHANGELOG.md

@@ -7,6 +7,14 @@ Format: [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
 
 ## [Unreleased]
 
+## [0.4.0] — 2026-04-24
+
+### Added
+- `src/p2p.rs` — `P2pSender` ve `NodeP2pEvent` (BlockAnnounce, TxGossip); block loop ve RPC handler'larının P2P event'i yayınlamasını sağlar
+- `--p2p-addr` ve `--bootstrap` CLI flag'leri — P2P etkinleştirildiğinde event channel başlatılır
+- `RpcServer::with_p2p` constructor — RPC katmanına P2P gossip sender enjekte eder
+- `nu_sendRawTx`: tx kabul edildiğinde raw bytes P2P gossip channel'ına iletilir
+
 ## [0.3.0] — 2026-04-24
 
 ### Added

crates/nu-rpc/src/handlers.rs

@@ -59,7 +59,7 @@ async fn handle_send_raw_tx(req: &JsonRpcRequest, state: &AppState) -> JsonRpcRe
         None => return JsonRpcResponse::err(req.id.clone(), -32602, "Missing tx param".into()),
     };
 
-    let tx: RawTransaction = match serde_json::from_value(raw_value) {
+    let tx: RawTransaction = match serde_json::from_value(raw_value.clone()) {
         Ok(t) => t,
         Err(e) => {
             return JsonRpcResponse::err(req.id.clone(), -32602, format!("Invalid tx format: {e}"))
@@ -84,6 +84,11 @@ async fn handle_send_raw_tx(req: &JsonRpcRequest, state: &AppState) -> JsonRpcRe
 
     if pool.insert(tx, now_ms) {
         tracing::info!("tx accepted: {tx_id} (pool size: {})", pool.len());
+        if let Some(ref p2p_tx) = state.p2p_tx {
+            if let Ok(raw) = serde_json::to_vec(&raw_value) {
+                let _ = p2p_tx.try_send(raw);
+            }
+        }
         JsonRpcResponse::ok(req.id.clone(), json!({ "tx_id": tx_id }))
     } else {
         JsonRpcResponse::err(req.id.clone(), -32000, "mempool full or sender limit reached".into())

crates/nu-rpc/src/server.rs

@@ -7,7 +7,7 @@ use axum::{
     routing::post,
     Json, Router,
 };
-use tokio::{net::TcpListener, sync::Mutex};
+use tokio::{net::TcpListener, sync::{mpsc, Mutex}};
 
 use crate::{
     handlers::dispatch,
@@ -17,9 +17,11 @@ use nu_mempool::Mempool;
 use nu_state::StateDb;
 
 pub struct AppState {
-    pub db:       Arc<Mutex<StateDb>>,
-    pub mempool:  Arc<Mutex<Mempool>>,
-    pub chain_id: String,
+    pub db:         Arc<Mutex<StateDb>>,
+    pub mempool:    Arc<Mutex<Mempool>>,
+    pub chain_id:   String,
+    /// Raw serialized tx bytes forwarded to P2P gossip on acceptance
+    pub p2p_tx:     Option<mpsc::Sender<Vec<u8>>>,
 }
 
 pub struct RpcServer {
@@ -33,10 +35,20 @@ impl RpcServer {
         db:        Arc<Mutex<StateDb>>,
         mempool:   Arc<Mutex<Mempool>>,
         chain_id:  String,
+    ) -> Self {
+        Self::with_p2p(bind_addr, db, mempool, chain_id, None)
+    }
+
+    pub fn with_p2p(
+        bind_addr: impl Into<String>,
+        db:        Arc<Mutex<StateDb>>,
+        mempool:   Arc<Mutex<Mempool>>,
+        chain_id:  String,
+        p2p_tx:    Option<mpsc::Sender<Vec<u8>>>,
     ) -> Self {
         Self {
             bind_addr: bind_addr.into(),
-            state: Arc::new(AppState { db, mempool, chain_id }),
+            state: Arc::new(AppState { db, mempool, chain_id, p2p_tx }),
         }
     }
 

src/main.rs

@@ -13,6 +13,7 @@ use nu_rpc::server::RpcServer;
 use nu_state::StateDb;
 
 use p2p::{NodeP2pEvent, P2pSender};
+use tokio::sync::mpsc as rpc_mpsc;
 
 #[derive(Parser)]
 #[command(name = "nu-node", version)]
@@ -63,25 +64,37 @@ async fn main() -> Result<()> {
 
     tracing::info!("State DB opened at {}", cli.db_path);
 
-    // P2P event channel — block_loop publishes, this node forwards to nu-p2p
-    let p2p_sender = if cli.p2p_addr.is_some() {
-        let (tx, mut rx) = mpsc::channel::<NodeP2pEvent>(128);
+    // P2P event channel — block_loop and RPC publish, forwarded to nu-p2p swarm
+    let (p2p_sender, rpc_p2p_tx) = if cli.p2p_addr.is_some() {
+        let (block_tx, mut block_rx) = mpsc::channel::<NodeP2pEvent>(128);
+        let (rpc_tx, mut rpc_rx)    = rpc_mpsc::channel::<Vec<u8>>(256);
+
         tokio::spawn(async move {
-            while let Some(event) = rx.recv().await {
-                match &event {
-                    NodeP2pEvent::BlockAnnounce { height, hash } => {
-                        tracing::info!(height, hash = %&hash[..8], "p2p: block announce");
+            loop {
+                tokio::select! {
+                    Some(event) = block_rx.recv() => {
+                        match &event {
+                            NodeP2pEvent::BlockAnnounce { height, hash } => {
+                                tracing::info!(height, hash = %&hash[..8], "p2p: block announce");
+                            }
+                            NodeP2pEvent::TxGossip { raw_tx } => {
+                                tracing::debug!(bytes = raw_tx.len(), "p2p: tx gossip");
+                            }
+                        }
+                        // TODO: forward to nu-p2p swarm
                     }
-                    NodeP2pEvent::TxGossip { raw_tx } => {
-                        tracing::debug!(bytes = raw_tx.len(), "p2p: tx gossip");
+                    Some(raw) = rpc_rx.recv() => {
+                        tracing::debug!(bytes = raw.len(), "p2p: rpc tx gossip");
+                        // TODO: forward to nu-p2p swarm
                     }
+                    else => break,
                 }
-                // TODO Faz 1: forward to nu-p2p swarm via IPC or embedded swarm
             }
         });
-        Some(P2pSender(tx))
+
+        (Some(P2pSender(block_tx)), Some(rpc_tx))
     } else {
-        None
+        (None, None)
     };
 
     if cli.dev && cli.validator {
@@ -97,11 +110,12 @@ async fn main() -> Result<()> {
         ));
     }
 
-    let rpc = RpcServer::new(
+    let rpc = RpcServer::with_p2p(
         cli.rpc_addr.clone(),
         Arc::clone(&db),
         Arc::clone(&mempool),
         cli.chain_id.clone(),
+        rpc_p2p_tx,
     );
 
     tracing::info!(