cut dependency between quic-proxy and lite-rpc crate

lite-rpc/Cargo.toml

@@ -39,8 +39,6 @@ async-channel = { workspace = true }
 quinn = { workspace = true }
 solana-lite-rpc-core = { workspace = true }
 solana-lite-rpc-services = { workspace = true }
-# TODO remove
-solana-lite-rpc-quic-forward-proxy = { path = "../quic-forward-proxy" }
 async-trait = { workspace = true }
 tokio = { version = "1.28.2", features = ["full", "fs"]}
 tokio-postgres = { version = "0.7.8", features = ["with-chrono-0_4"] }

lite-rpc/src/main.rs

@@ -9,9 +9,6 @@ use solana_sdk::signature::Keypair;
 use std::env;
 use std::sync::Arc;
 use tokio::time::timeout;
-use solana_lite_rpc_quic_forward_proxy::proxy::QuicForwardProxy;
-use solana_lite_rpc_quic_forward_proxy::SelfSignedTlsConfigProvider;
-use solana_lite_rpc_quic_forward_proxy::test_client::quic_test_client::QuicTestClient;
 // use lite_rpc_quic_forward_proxy::tls_config::SelfSignedTlsConfigProvider;
 
 // note: copy of this method is used in quic-forward-proxy
@@ -71,11 +68,11 @@ pub async fn main() -> anyhow::Result<()> {
 
     let retry_after = Duration::from_secs(transaction_retry_after_secs);
 
-    let proxy_listener_addr = "127.0.0.1:11111".parse().unwrap();
-    let tls_configuration = SelfSignedTlsConfigProvider::new_singleton_self_signed_localhost();
-    let quicproxy_service = QuicForwardProxy::new(proxy_listener_addr, &tls_configuration, validator_identity.clone())
-        .await?
-        .start_services();
+    // let proxy_listener_addr = "127.0.0.1:11111".parse().unwrap();
+    //
+    // let quicproxy_service = QuicForwardProxy::new(proxy_listener_addr, validator_identity.clone())
+    //     .await?
+    //     .start_services();
 
     let services = LiteBridge::new(
         rpc_addr,
@@ -106,9 +103,9 @@ pub async fn main() -> anyhow::Result<()> {
         res = services => {
             bail!("Services quit unexpectedly {res:?}");
         },
-        res = quicproxy_service => {
-            bail!("Quic Proxy quit unexpectedly {res:?}");
-        },
+        // res = quicproxy_service => {
+        //     bail!("Quic Proxy quit unexpectedly {res:?}");
+        // },
         // res = test_client => {
         //     bail!("Test Client quit unexpectedly {res:?}");
         // },

quic-forward-proxy/Cargo.toml

@@ -12,6 +12,8 @@ publish = false
 [dependencies]
 solana-sdk = { workspace = true }
 solana-streamer = { workspace = true }
+solana-transaction-status = { workspace = true }
+solana-net-utils = { workspace = true }
 rustls = { workspace = true, features = ["dangerous_configuration"]}
 serde = { workspace = true }
 serde_json = { workspace = true }
@@ -32,8 +34,6 @@ lazy_static = { workspace = true }
 dotenv = { workspace = true }
 async-channel = { workspace = true }
 quinn = { workspace = true }
-solana-lite-rpc-core = { workspace = true }
-solana-lite-rpc-services = { workspace = true }
 async-trait = { workspace = true }
 chrono = { workspace = true }
 tokio = { version = "1.28.2", features = ["full", "fs"]}

quic-forward-proxy/README.md

@@ -22,9 +22,13 @@ Local Development / Testing
 ```bash
 RUST_LOG="error,solana_streamer::nonblocking::quic=debug" solana-test-validator --log
 ```
+3. run quic proxy
+```bash
+RUST_LOG=debug cargo run --bin solana-lite-rpc-quic-forward-proxy -- --identity-keypair /pathto-test-ledger/validator-keypair.json
+```
 2. run lite-rpc
 ```bash
-RUST_LOG=info cargo run --bin lite-rpc -- --identity-keypair /pathto-test-ledger/validator-keypair.json
+RUST_LOG=debug cargo run --bin lite-rpc
 ```
 3. run rust bench tool in _lite-rpc_
 ```bash

quic-forward-proxy/src/active_connection.rs

@@ -0,0 +1,293 @@
+use std::net::SocketAddr;
+use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
+use std::time::Duration;
+use anyhow::bail;
+use log::{error, info, warn};
+use prometheus::{opts, register_int_gauge};
+use prometheus::core::GenericGauge;
+use quinn::{Connection, Endpoint};
+use solana_sdk::pubkey::Pubkey;
+use solana_sdk::transaction::VersionedTransaction;
+use solana_streamer::nonblocking::quic::compute_max_allowed_uni_streams;
+use tokio::sync::broadcast::Receiver;
+use tokio::sync::RwLock;
+use tokio::time::timeout;
+use crate::identity_stakes::IdentityStakes;
+use crate::proxy_request_format::TpuForwardingRequest;
+use crate::quic_connection_utils::QuicConnectionUtils;
+use crate::tpu_quic_connection::{CONNECTION_RETRY_COUNT, QUIC_CONNECTION_TIMEOUT};
+use crate::tx_store::TxStore;
+use itertools::Itertools;
+
+lazy_static::lazy_static! {
+    // TODO rename / cleanup
+    static ref NB_QUIC_CONNECTIONS: GenericGauge<prometheus::core::AtomicI64> =
+        register_int_gauge!(opts!("literpc_nb_active_quic_connections", "Number of quic connections open")).unwrap();
+    static ref NB_QUIC_ACTIVE_CONNECTIONS: GenericGauge<prometheus::core::AtomicI64> =
+        register_int_gauge!(opts!("literpc_nb_active_connections", "Number quic tasks that are running")).unwrap();
+    static ref NB_CONNECTIONS_TO_KEEP: GenericGauge<prometheus::core::AtomicI64> =
+        register_int_gauge!(opts!("literpc_connections_to_keep", "Number of connections to keep asked by tpu service")).unwrap();
+    static ref NB_QUIC_TASKS: GenericGauge<prometheus::core::AtomicI64> =
+        register_int_gauge!(opts!("literpc_quic_tasks", "Number of connections to keep asked by tpu service")).unwrap();
+}
+
+pub struct ActiveConnection {
+    endpoint: Endpoint,
+    identity: Pubkey,
+    tpu_address: SocketAddr,
+    exit_signal: Arc<AtomicBool>,
+    txs_sent_store: TxStore,
+}
+
+impl ActiveConnection {
+    pub fn new(
+        endpoint: Endpoint,
+        tpu_address: SocketAddr,
+        identity: Pubkey,
+        txs_sent_store: TxStore,
+    ) -> Self {
+        Self {
+            endpoint,
+            tpu_address,
+            identity,
+            exit_signal: Arc::new(AtomicBool::new(false)),
+            txs_sent_store,
+        }
+    }
+
+    fn on_connect() {
+        NB_QUIC_CONNECTIONS.inc();
+    }
+
+    fn check_for_confirmation(txs_sent_store: &TxStore, signature: String) -> bool {
+        match txs_sent_store.get(&signature) {
+            Some(props) => props.status.is_some(),
+            None => false,
+        }
+    }
+
+    #[allow(clippy::too_many_arguments)]
+    async fn listen(
+        transaction_reciever: Receiver<(String, Vec<u8>)>,
+        exit_oneshot_channel: tokio::sync::mpsc::Receiver<()>,
+        endpoint: Endpoint,
+        tpu_address: SocketAddr,
+        exit_signal: Arc<AtomicBool>,
+        identity: Pubkey,
+        identity_stakes: IdentityStakes,
+        txs_sent_store: TxStore,
+    ) {
+        NB_QUIC_ACTIVE_CONNECTIONS.inc();
+        let mut transaction_reciever = transaction_reciever;
+        let mut exit_oneshot_channel = exit_oneshot_channel;
+
+        let max_uni_stream_connections: u64 = compute_max_allowed_uni_streams(
+            identity_stakes.peer_type,
+            identity_stakes.stakes,
+            identity_stakes.total_stakes,
+        ) as u64;
+        let number_of_transactions_per_unistream = 5;
+
+        let task_counter: Arc<AtomicU64> = Arc::new(AtomicU64::new(0));
+        let mut connection: Option<Arc<RwLock<Connection>>> = None;
+        let last_stable_id: Arc<AtomicU64> = Arc::new(AtomicU64::new(0));
+
+        loop {
+            // exit signal set
+            if exit_signal.load(Ordering::Relaxed) {
+                break;
+            }
+
+            if task_counter.load(Ordering::Relaxed) >= max_uni_stream_connections {
+                tokio::time::sleep(tokio::time::Duration::from_millis(1)).await;
+                continue;
+            }
+
+            tokio::select! {
+                tx = transaction_reciever.recv() => {
+                    // exit signal set
+                    if exit_signal.load(Ordering::Relaxed) {
+                        break;
+                    }
+
+                    let first_tx: Vec<u8> = match tx {
+                        Ok((sig, tx)) => {
+                            if Self::check_for_confirmation(&txs_sent_store, sig) {
+                                // transaction is already confirmed/ no need to send
+                                continue;
+                            }
+                            tx
+                        },
+                        Err(e) => {
+                            error!(
+                                "Broadcast channel error on recv for {} error {}",
+                                identity, e
+                            );
+                            continue;
+                        }
+                    };
+
+                    let mut txs = vec![first_tx];
+                    for _ in 1..number_of_transactions_per_unistream {
+                        if let Ok((signature, tx)) = transaction_reciever.try_recv() {
+                            if Self::check_for_confirmation(&txs_sent_store, signature) {
+                                continue;
+                            }
+                            txs.push(tx);
+                        }
+                    }
+
+                    if connection.is_none() {
+                        // initial connection
+                        let conn = QuicConnectionUtils::connect(
+                            identity,
+                            false,
+                            endpoint.clone(),
+                            tpu_address,
+                            QUIC_CONNECTION_TIMEOUT,
+                            CONNECTION_RETRY_COUNT,
+                            exit_signal.clone(),
+                            Self::on_connect).await;
+
+                        if let Some(conn) = conn {
+                            // could connect
+                            connection = Some(Arc::new(RwLock::new(conn)));
+                        } else {
+                            break;
+                        }
+                    }
+
+                    let task_counter = task_counter.clone();
+                    let endpoint = endpoint.clone();
+                    let exit_signal = exit_signal.clone();
+                    let connection = connection.clone();
+                    let last_stable_id = last_stable_id.clone();
+
+                    tokio::spawn(async move {
+                        task_counter.fetch_add(1, Ordering::Relaxed);
+                        NB_QUIC_TASKS.inc();
+                        let connection = connection.unwrap();
+
+                        if true {
+                            // TODO split to new service
+                            // SOS
+                            info!("Sending copy of transaction batch of {} to tpu with identity {} to quic proxy",
+                                txs.len(), identity);
+                            Self::send_copy_of_txs_to_quicproxy(
+                                &txs, endpoint.clone(),
+                                // proxy address
+                                "127.0.0.1:11111".parse().unwrap(),
+                                tpu_address,
+                                identity.clone()).await.unwrap();
+                        }
+
+
+                        if false {
+                            QuicConnectionUtils::send_transaction_batch(
+                                connection,
+                                txs,
+                                identity,
+                                endpoint,
+                                tpu_address,
+                                exit_signal,
+                                last_stable_id,
+                                QUIC_CONNECTION_TIMEOUT,
+                                CONNECTION_RETRY_COUNT,
+                                || {
+                                    // do nothing as we are using the same connection
+                                }
+                            ).await;
+                        }
+
+                        NB_QUIC_TASKS.dec();
+                        task_counter.fetch_sub(1, Ordering::Relaxed);
+                    });
+                },
+                _ = exit_oneshot_channel.recv() => {
+                    break;
+                }
+            };
+        }
+        drop(transaction_reciever);
+        NB_QUIC_CONNECTIONS.dec();
+        NB_QUIC_ACTIVE_CONNECTIONS.dec();
+    }
+
+    async fn send_copy_of_txs_to_quicproxy(raw_tx_batch: &Vec<Vec<u8>>, endpoint: Endpoint,
+                                           proxy_address: SocketAddr, tpu_target_address: SocketAddr,
+                                           identity: Pubkey) -> anyhow::Result<()> {
+
+        info!("sending vecvec: {}", raw_tx_batch.iter().map(|tx| tx.len()).into_iter().join(","));
+
+        let raw_tx_batch_copy = raw_tx_batch.clone();
+
+        let mut txs = vec![];
+
+        for raw_tx in raw_tx_batch_copy {
+            let tx = match bincode::deserialize::<VersionedTransaction>(&raw_tx) {
+                Ok(tx) => tx,
+                Err(err) => {
+                    bail!(err.to_string());
+                }
+            };
+            txs.push(tx);
+        }
+
+        let forwarding_request = TpuForwardingRequest::new(tpu_target_address, identity, txs);
+
+        let proxy_request_raw = bincode::serialize(&forwarding_request).expect("Expect to serialize transactions");
+
+        let send_result = timeout(Duration::from_millis(3500), Self::send_proxy_request(endpoint, proxy_address, &proxy_request_raw));
+
+        match send_result.await {
+            Ok(..) => {
+                info!("Successfully sent data to quic proxy");
+            }
+            Err(e) => {
+                warn!("Failed to send data to quic proxy: {:?}", e);
+            }
+        }
+        Ok(())
+    }
+
+    async fn send_proxy_request(endpoint: Endpoint, proxy_address: SocketAddr, proxy_request_raw: &Vec<u8>) -> anyhow::Result<()> {
+        info!("sending {} bytes to proxy", proxy_request_raw.len());
+
+        let mut connecting = endpoint.connect(proxy_address, "localhost")?;
+        let connection = timeout(Duration::from_millis(500), connecting).await??;
+        let mut send = connection.open_uni().await?;
+
+        send.write_all(proxy_request_raw).await?;
+
+        send.finish().await?;
+
+        Ok(())
+    }
+
+    pub fn start_listening(
+        &self,
+        transaction_reciever: Receiver<(String, Vec<u8>)>,
+        exit_oneshot_channel: tokio::sync::mpsc::Receiver<()>,
+        identity_stakes: IdentityStakes,
+    ) {
+        let endpoint = self.endpoint.clone();
+        let tpu_address = self.tpu_address;
+        let exit_signal = self.exit_signal.clone();
+        let identity = self.identity;
+        let txs_sent_store = self.txs_sent_store.clone();
+        tokio::spawn(async move {
+            Self::listen(
+                transaction_reciever,
+                exit_oneshot_channel,
+                endpoint,
+                tpu_address,
+                exit_signal,
+                identity,
+                identity_stakes,
+                txs_sent_store,
+            )
+                .await;
+        });
+    }
+}

quic-forward-proxy/src/identity_stakes.rs

@@ -0,0 +1,22 @@
+use solana_streamer::nonblocking::quic::ConnectionPeerType;
+
+#[derive(Debug, Copy, Clone)]
+pub struct IdentityStakes {
+    pub peer_type: ConnectionPeerType,
+    pub stakes: u64,
+    pub total_stakes: u64,
+    pub min_stakes: u64,
+    pub max_stakes: u64,
+}
+
+impl Default for IdentityStakes {
+    fn default() -> Self {
+        IdentityStakes {
+            peer_type: ConnectionPeerType::Unstaked,
+            stakes: 0,
+            total_stakes: 0,
+            max_stakes: 0,
+            min_stakes: 0,
+        }
+    }
+}

quic-forward-proxy/src/lib.rs

@@ -1,10 +0,0 @@
-pub mod quic_util;
-pub mod tls_config_provicer;
-pub mod proxy;
-pub mod tpu_quic_connection;
-pub mod test_client;
-pub mod cli;
-
-
-pub use tls_config_provicer::SelfSignedTlsConfigProvider;
-// pub mod tls_config;

quic-forward-proxy/src/main.rs

@@ -7,14 +7,21 @@ use log::info;
 use crate::cli::{Args, get_identity_keypair};
 use crate::proxy::QuicForwardProxy;
 use crate::test_client::quic_test_client::QuicTestClient;
-use crate::tls_config_provicer::SelfSignedTlsConfigProvider;
+pub use tls_config_provicer::SelfSignedTlsConfigProvider;
 
-mod proxy;
-mod tpu_quic_connection;
-mod test_client;
-mod quic_util;
-mod tls_config_provicer;
-mod cli;
+
+pub mod quic_util;
+pub mod tls_config_provicer;
+pub mod proxy;
+pub mod proxy_request_format;
+pub mod tpu_quic_connection;
+pub mod active_connection;
+pub mod cli;
+pub mod test_client;
+mod util;
+mod tx_store;
+mod identity_stakes;
+mod quic_connection_utils;
 
 
 #[tokio::main(flavor = "multi_thread", worker_threads = 16)]
@@ -33,15 +40,16 @@ pub async fn main() -> anyhow::Result<()> {
     let validator_identity = Arc::new(get_identity_keypair(&identity_keypair).await);
 
 
-    let main_services = QuicForwardProxy::new(proxy_listener_addr, &tls_configuration, validator_identity)
+    let tls_config = SelfSignedTlsConfigProvider::new_singleton_self_signed_localhost();
+    let main_services = QuicForwardProxy::new(proxy_listener_addr, &tls_config, validator_identity)
         .await?
         .start_services();
 
-    let proxy_addr = "127.0.0.1:11111".parse().unwrap();
-    let test_client = QuicTestClient::new_with_endpoint(
-        proxy_addr, &tls_configuration)
-        .await?
-        .start_services();
+    // let proxy_addr = "127.0.0.1:11111".parse().unwrap();
+    // let test_client = QuicTestClient::new_with_endpoint(
+    //     proxy_addr, &tls_configuration)
+    //     .await?
+    //     .start_services();
 
 
     let ctrl_c_signal = tokio::signal::ctrl_c();
@@ -50,9 +58,9 @@ pub async fn main() -> anyhow::Result<()> {
         res = main_services => {
             bail!("Services quit unexpectedly {res:?}");
         },
-        res = test_client => {
-            bail!("Test Client quit unexpectedly {res:?}");
-        },
+        // res = test_client => {
+        //     bail!("Test Client quit unexpectedly {res:?}");
+        // },
         _ = ctrl_c_signal => {
             info!("Received ctrl+c signal");
 

quic-forward-proxy/src/proxy.rs

@@ -17,15 +17,12 @@ use solana_sdk::signature::Keypair;
 use solana_sdk::signer::Signer;
 use solana_sdk::transaction::VersionedTransaction;
 use tokio::net::ToSocketAddrs;
-use solana_lite_rpc_core::AnyhowJoinHandle;
 use solana_streamer::tls_certificates::new_self_signed_tls_certificate;
 use tokio::sync::RwLock;
-use solana_lite_rpc_core::leader_schedule::LeaderSchedule;
-use solana_lite_rpc_core::proxy_request_format::TpuForwardingRequest;
-use solana_lite_rpc_core::quic_connection_utils::QuicConnectionUtils;
-use solana_lite_rpc_services::tpu_utils::tpu_connection_manager::{ActiveConnection, CONNECTION_RETRY_COUNT, QUIC_CONNECTION_TIMEOUT};
+use crate::proxy_request_format::TpuForwardingRequest;
 use crate::tpu_quic_connection::TpuQuicConnection;
 use crate::tls_config_provicer::{ProxyTlsConfigProvider, SelfSignedTlsConfigProvider};
+use crate::util::AnyhowJoinHandle;
 
 
 pub struct QuicForwardProxy {

quic-forward-proxy/src/proxy_request_format.rs

@@ -0,0 +1,71 @@
+use std::fmt;
+use std::fmt::Display;
+use std::net::{SocketAddr, SocketAddrV4};
+use anyhow::Context;
+use serde::{Deserialize, Serialize};
+use solana_sdk::pubkey::Pubkey;
+use solana_sdk::transaction::VersionedTransaction;
+
+///
+/// lite-rpc to proxy wire format
+/// compat info: non-public format ATM
+/// initial version
+const FORMAT_VERSION1: u16 = 2301;
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct TpuForwardingRequest {
+    format_version: u16,
+    tpu_socket_addr: SocketAddr, // TODO is that correct
+    identity_tpunode: Pubkey,
+    transactions: Vec<VersionedTransaction>,
+}
+
+impl Display for TpuForwardingRequest {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "TpuForwardingRequest for tpu target {} with identity {}",
+               &self.get_tpu_socket_addr(), &self.get_identity_tpunode())
+    }
+}
+
+impl TpuForwardingRequest {
+    pub fn new(tpu_socket_addr: SocketAddr, identity_tpunode: Pubkey,
+               transactions: Vec<VersionedTransaction>) -> Self {
+        TpuForwardingRequest {
+            format_version: FORMAT_VERSION1,
+            tpu_socket_addr,
+            identity_tpunode,
+            transactions,
+        }
+    }
+
+    pub fn serialize_wire_format(
+        &self) -> Vec<u8> {
+        bincode::serialize(&self).expect("Expect to serialize transactions")
+    }
+
+    // TODO reame
+    pub fn deserialize_from_raw_request(raw_proxy_request: &Vec<u8>) -> TpuForwardingRequest {
+        let request = bincode::deserialize::<TpuForwardingRequest>(&raw_proxy_request)
+            .context("deserialize proxy request")
+            .unwrap();
+
+        assert_eq!(request.format_version, 2301);
+
+        request
+    }
+
+    pub fn get_tpu_socket_addr(&self) -> SocketAddr {
+        self.tpu_socket_addr
+    }
+
+    pub fn get_identity_tpunode(&self) -> Pubkey {
+        self.identity_tpunode
+    }
+
+    pub fn get_transactions(&self) -> Vec<VersionedTransaction> {
+        self.transactions.clone()
+    }
+}
+
+
+

quic-forward-proxy/src/quic_connection_utils.rs

@@ -0,0 +1,309 @@
+use log::{info, trace, warn};
+use quinn::{
+    ClientConfig, Connection, ConnectionError, Endpoint, EndpointConfig, IdleTimeout, SendStream,
+    TokioRuntime, TransportConfig,
+};
+use solana_sdk::pubkey::Pubkey;
+use std::{
+    collections::VecDeque,
+    net::{IpAddr, Ipv4Addr, SocketAddr},
+    sync::{
+        atomic::{AtomicBool, AtomicU64, Ordering},
+        Arc,
+    },
+    time::Duration,
+};
+use anyhow::bail;
+use tokio::{sync::RwLock, time::timeout};
+
+const ALPN_TPU_PROTOCOL_ID: &[u8] = b"solana-tpu";
+
+pub struct QuicConnectionUtils {}
+
+impl QuicConnectionUtils {
+    pub fn create_endpoint(certificate: rustls::Certificate, key: rustls::PrivateKey) -> Endpoint {
+        let mut endpoint = {
+            let client_socket =
+                solana_net_utils::bind_in_range(IpAddr::V4(Ipv4Addr::UNSPECIFIED), (8000, 10000))
+                    .expect("create_endpoint bind_in_range")
+                    .1;
+            let config = EndpointConfig::default();
+            quinn::Endpoint::new(config, None, client_socket, TokioRuntime)
+                .expect("create_endpoint quinn::Endpoint::new")
+        };
+
+        let mut crypto = rustls::ClientConfig::builder()
+            .with_safe_defaults()
+            .with_custom_certificate_verifier(SkipServerVerification::new())
+            .with_single_cert(vec![certificate], key)
+            .expect("Failed to set QUIC client certificates");
+
+        crypto.enable_early_data = true;
+        // FIXME TEMP HACK TO ALLOW PROXY PROTOCOL
+        const ALPN_TPU_FORWARDPROXY_PROTOCOL_ID: &[u8] = b"solana-tpu-forward-proxy";
+
+        crypto.alpn_protocols = vec![ALPN_TPU_PROTOCOL_ID.to_vec(), ALPN_TPU_FORWARDPROXY_PROTOCOL_ID.to_vec()];
+
+        let mut config = ClientConfig::new(Arc::new(crypto));
+        let mut transport_config = TransportConfig::default();
+
+        // TODO check timing
+        let timeout = IdleTimeout::try_from(Duration::from_secs(5)).unwrap();
+        transport_config.max_idle_timeout(Some(timeout));
+        transport_config.keep_alive_interval(Some(Duration::from_millis(500)));
+        config.transport_config(Arc::new(transport_config));
+
+        endpoint.set_default_client_config(config);
+
+        endpoint
+    }
+
+    pub async fn make_connection(
+        endpoint: Endpoint,
+        addr: SocketAddr,
+        connection_timeout: Duration,
+    ) -> anyhow::Result<Connection> {
+        let connecting = endpoint.connect(addr, "connect")?;
+        let res = timeout(connection_timeout, connecting).await??;
+        Ok(res)
+    }
+
+    pub async fn make_connection_0rtt(
+        endpoint: Endpoint,
+        addr: SocketAddr,
+        connection_timeout: Duration,
+    ) -> anyhow::Result<Connection> {
+        let connecting = endpoint.connect(addr, "connect")?;
+        let connection = match connecting.into_0rtt() {
+            Ok((connection, zero_rtt)) => {
+                if (timeout(connection_timeout, zero_rtt).await).is_ok() {
+                    connection
+                } else {
+                    return Err(ConnectionError::TimedOut.into());
+                }
+            }
+            Err(connecting) => {
+                if let Ok(connecting_result) = timeout(connection_timeout, connecting).await {
+                    connecting_result?
+                } else {
+                    return Err(ConnectionError::TimedOut.into());
+                }
+            }
+        };
+        Ok(connection)
+    }
+
+    #[allow(clippy::too_many_arguments)]
+    pub async fn connect(
+        identity: Pubkey,
+        already_connected: bool,
+        endpoint: Endpoint,
+        tpu_address: SocketAddr,
+        connection_timeout: Duration,
+        connection_retry_count: usize,
+        exit_signal: Arc<AtomicBool>,
+        on_connect: fn(),
+    ) -> Option<Connection> {
+        for _ in 0..connection_retry_count {
+            let conn = if already_connected {
+                Self::make_connection_0rtt(endpoint.clone(), tpu_address, connection_timeout).await
+            } else {
+                Self::make_connection(endpoint.clone(), tpu_address, connection_timeout).await
+            };
+            match conn {
+                Ok(conn) => {
+                    on_connect();
+                    return Some(conn);
+                }
+                Err(e) => {
+                    warn!("Could not connect to tpu {}/{}, error: {}", tpu_address, identity, e);
+                    if exit_signal.load(Ordering::Relaxed) {
+                        break;
+                    }
+                }
+            }
+        }
+        None
+    }
+
+    pub async fn write_all(
+        mut send_stream: SendStream,
+        tx: &Vec<u8>,
+        identity: Pubkey,
+        last_stable_id: Arc<AtomicU64>,
+        connection_stable_id: u64,
+        connection_timeout: Duration,
+    ) -> bool {
+        let write_timeout_res =
+            timeout(connection_timeout, send_stream.write_all(tx.as_slice())).await;
+        match write_timeout_res {
+            Ok(write_res) => {
+                if let Err(e) = write_res {
+                    trace!(
+                        "Error while writing transaction for {}, error {}",
+                        identity,
+                        e
+                    );
+                    // retry
+                    last_stable_id.store(connection_stable_id, Ordering::Relaxed);
+                    return true;
+                }
+            }
+            Err(_) => {
+                warn!("timeout while writing transaction for {}", identity);
+            }
+        }
+
+        let finish_timeout_res = timeout(connection_timeout, send_stream.finish()).await;
+        match finish_timeout_res {
+            Ok(finish_res) => {
+                if let Err(e) = finish_res {
+                    last_stable_id.store(connection_stable_id, Ordering::Relaxed);
+                    trace!(
+                        "Error while writing transaction for {}, error {}",
+                        identity,
+                        e
+                    );
+                    return true;
+                }
+            }
+            Err(_) => {
+                warn!("timeout while finishing transaction for {}", identity);
+            }
+        }
+
+        false
+    }
+
+    pub async fn open_unistream(
+        connection: Connection,
+        last_stable_id: Arc<AtomicU64>,
+        connection_timeout: Duration,
+    ) -> (Option<SendStream>, bool) {
+        match timeout(connection_timeout, connection.open_uni()).await {
+            Ok(Ok(unistream)) => (Some(unistream), false),
+            Ok(Err(_)) => {
+                // reset connection for next retry
+                last_stable_id.store(connection.stable_id() as u64, Ordering::Relaxed);
+                (None, true)
+            }
+            // timeout
+            Err(_) => (None, false),
+        }
+    }
+
+    #[allow(clippy::too_many_arguments)]
+    pub async fn send_transaction_batch(
+        connection: Arc<RwLock<Connection>>,
+        txs: Vec<Vec<u8>>,
+        identity: Pubkey,
+        endpoint: Endpoint,
+        tpu_address: SocketAddr,
+        exit_signal: Arc<AtomicBool>,
+        last_stable_id: Arc<AtomicU64>,
+        connection_timeout: Duration,
+        connection_retry_count: usize,
+        on_connect: fn(),
+    ) {
+        info!("send transaction batch of size {} to address {}", txs.len(), tpu_address);
+        let mut queue = VecDeque::new();
+        for tx in txs {
+            queue.push_back(tx);
+        }
+        for _ in 0..connection_retry_count {
+            if queue.is_empty() || exit_signal.load(Ordering::Relaxed) {
+                // return
+                return;
+            }
+            // get new connection reset if necessary
+            let conn = {
+                let last_stable_id = last_stable_id.load(Ordering::Relaxed) as usize;
+                let conn = connection.read().await;
+                if conn.stable_id() == last_stable_id {
+                    let current_stable_id = conn.stable_id();
+                    // problematic connection
+                    drop(conn);
+                    let mut conn = connection.write().await;
+                    // check may be already written by another thread
+                    if conn.stable_id() != current_stable_id {
+                        conn.clone()
+                    } else {
+                        let new_conn = Self::connect(
+                            identity,
+                            true,
+                            endpoint.clone(),
+                            tpu_address,
+                            connection_timeout,
+                            connection_retry_count,
+                            exit_signal.clone(),
+                            on_connect,
+                        )
+                        .await;
+                        if let Some(new_conn) = new_conn {
+                            *conn = new_conn;
+                            conn.clone()
+                        } else {
+                            // could not connect
+                            return;
+                        }
+                    }
+                } else {
+                    conn.clone()
+                }
+            };
+            let mut retry = false;
+            while !queue.is_empty() {
+                let tx = queue.pop_front().unwrap();
+                let (stream, retry_conn) =
+                    Self::open_unistream(conn.clone(), last_stable_id.clone(), connection_timeout)
+                        .await;
+                if let Some(send_stream) = stream {
+                    if exit_signal.load(Ordering::Relaxed) {
+                        return;
+                    }
+
+                    retry = Self::write_all(
+                        send_stream,
+                        &tx,
+                        identity,
+                        last_stable_id.clone(),
+                        conn.stable_id() as u64,
+                        connection_timeout,
+                    )
+                    .await;
+                } else {
+                    retry = retry_conn;
+                }
+                if retry {
+                    queue.push_back(tx);
+                    break;
+                }
+            }
+            if !retry {
+                break;
+            }
+        }
+    }
+}
+
+pub struct SkipServerVerification;
+
+impl SkipServerVerification {
+    pub fn new() -> Arc<Self> {
+        Arc::new(Self)
+    }
+}
+
+impl rustls::client::ServerCertVerifier for SkipServerVerification {
+    fn verify_server_cert(
+        &self,
+        _end_entity: &rustls::Certificate,
+        _intermediates: &[rustls::Certificate],
+        _server_name: &rustls::ServerName,
+        _scts: &mut dyn Iterator<Item = &[u8]>,
+        _ocsp_response: &[u8],
+        _now: std::time::SystemTime,
+    ) -> Result<rustls::client::ServerCertVerified, rustls::Error> {
+        Ok(rustls::client::ServerCertVerified::assertion())
+    }
+}

quic-forward-proxy/src/test_client/quic_test_client.rs

@@ -10,12 +10,12 @@ use rustls::ClientConfig;
 use solana_sdk::pubkey::Pubkey;
 use solana_sdk::transaction::{Transaction, VersionedTransaction};
 use tokio::io::AsyncWriteExt;
-use solana_lite_rpc_core::AnyhowJoinHandle;
+use crate::proxy_request_format::TpuForwardingRequest;
+use crate::quic_connection_utils::SkipServerVerification;
 use crate::quic_util::ALPN_TPU_FORWARDPROXY_PROTOCOL_ID;
 use crate::tls_config_provicer::ProxyTlsConfigProvider;
-use solana_lite_rpc_core::quic_connection_utils::SkipServerVerification;
-use solana_lite_rpc_core::proxy_request_format::TpuForwardingRequest;
 use crate::test_client::sample_data_factory::build_raw_sample_tx;
+use crate::util::AnyhowJoinHandle;
 
 pub struct QuicTestClient {
     pub endpoint: Endpoint,

quic-forward-proxy/src/tls_config_provicer.rs

@@ -1,7 +1,7 @@
 use std::sync::atomic::{AtomicU32, Ordering};
 use rcgen::generate_simple_self_signed;
 use rustls::{Certificate, ClientConfig, PrivateKey, ServerConfig};
-use solana_lite_rpc_core::quic_connection_utils::SkipServerVerification;
+use crate::quic_connection_utils::SkipServerVerification;
 use crate::quic_util::ALPN_TPU_FORWARDPROXY_PROTOCOL_ID;
 
 // TODO integrate with tpu_service + quic_connection_utils

quic-forward-proxy/src/tpu_quic_connection.rs

@@ -16,14 +16,14 @@ use solana_sdk::signature::Keypair;
 use solana_sdk::signer::Signer;
 use solana_sdk::transaction::VersionedTransaction;
 use tokio::net::ToSocketAddrs;
-use solana_lite_rpc_core::AnyhowJoinHandle;
 use solana_streamer::tls_certificates::new_self_signed_tls_certificate;
 use tokio::sync::RwLock;
-use solana_lite_rpc_core::proxy_request_format::TpuForwardingRequest;
-use solana_lite_rpc_core::quic_connection_utils::QuicConnectionUtils;
-use solana_lite_rpc_services::tpu_utils::tpu_connection_manager::{ActiveConnection, CONNECTION_RETRY_COUNT, QUIC_CONNECTION_TIMEOUT};
+use crate::quic_connection_utils::QuicConnectionUtils;
 use crate::tls_config_provicer::{ProxyTlsConfigProvider, SelfSignedTlsConfigProvider};
 
+pub const QUIC_CONNECTION_TIMEOUT: Duration = Duration::from_secs(5);
+pub const CONNECTION_RETRY_COUNT: usize = 10;
+
 /// stable connect to TPU to send transactions - optimized for proxy use case
 #[derive(Clone)]
 pub struct TpuQuicConnection {

quic-forward-proxy/src/tx_store.rs

@@ -0,0 +1,27 @@
+use std::sync::Arc;
+
+use dashmap::DashMap;
+use solana_transaction_status::TransactionStatus;
+use tokio::time::Instant;
+/// Transaction Properties
+
+pub struct TxProps {
+    pub status: Option<TransactionStatus>,
+    /// Time at which transaction was forwarded
+    pub sent_at: Instant,
+}
+
+impl Default for TxProps {
+    fn default() -> Self {
+        Self {
+            status: Default::default(),
+            sent_at: Instant::now(),
+        }
+    }
+}
+
+pub type TxStore = Arc<DashMap<String, TxProps>>;
+
+pub fn empty_tx_store() -> TxStore {
+    Arc::new(DashMap::new())
+}

quic-forward-proxy/src/util.rs

@@ -0,0 +1,2 @@
+
+pub type AnyhowJoinHandle = tokio::task::JoinHandle<anyhow::Result<()>>;

quic-forward-proxy/tests/proxy_request_format.rs

@@ -9,8 +9,7 @@ use solana_sdk::pubkey::Pubkey;
 use solana_sdk::signature::{Keypair, Signer};
 use solana_sdk::transaction::{Transaction, VersionedTransaction};
 use spl_memo::solana_program::message::VersionedMessage;
-use solana_lite_rpc_core::proxy_request_format::TpuForwardingRequest;
-use solana_lite_rpc_core::proxy_request_format::*;
+use solana_lite_rpc_quic_forward_proxy::proxy_request_format::TpuForwardingRequest;
 
 #[test]
 fn roundtrip() {