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-rw-r--r--doc/book/reference-manual/configuration.md13
-rw-r--r--src/garage/main.rs2
-rw-r--r--src/net/netapp.rs45
-rw-r--r--src/net/test.rs2
-rw-r--r--src/rpc/system.rs15
-rw-r--r--src/util/config.rs3
6 files changed, 61 insertions, 19 deletions
diff --git a/doc/book/reference-manual/configuration.md b/doc/book/reference-manual/configuration.md
index 27d9fd54..f1474613 100644
--- a/doc/book/reference-manual/configuration.md
+++ b/doc/book/reference-manual/configuration.md
@@ -27,6 +27,7 @@ compression_level = 1
rpc_secret = "4425f5c26c5e11581d3223904324dcb5b5d5dfb14e5e7f35e38c595424f5f1e6"
rpc_bind_addr = "[::]:3901"
+rpc_bind_outgoing = false
rpc_public_addr = "[fc00:1::1]:3901"
bootstrap_peers = [
@@ -91,6 +92,7 @@ Top-level configuration options:
[`metadata_fsync`](#metadata_fsync),
[`replication_mode`](#replication_mode),
[`rpc_bind_addr`](#rpc_bind_addr),
+[`rpc_bind_outgoing`](#rpc_bind_outgoing),
[`rpc_public_addr`](#rpc_public_addr),
[`rpc_secret`/`rpc_secret_file`](#rpc_secret),
[`sled_cache_capacity`](#sled_cache_capacity),
@@ -415,6 +417,17 @@ the node, even in the case of a NAT: the NAT should be configured to forward the
port number to the same internal port nubmer. This means that if you have several nodes running
behind a NAT, they should each use a different RPC port number.
+#### `rpc_bind_outgoing` {#rpc_bind_outgoing} (since v0.9.2)
+
+If enabled, pre-bind all sockets for outgoing connections to the same IP address
+used for listening (the IP address specified in `rpc_bind_addr`) before
+trying to connect to remote nodes.
+This can be necessary if a node has multiple IP addresses,
+but only one is allowed or able to reach the other nodes,
+for instance due to firewall rules or specific routing configuration.
+
+Disabled by default.
+
#### `rpc_public_addr` {#rpc_public_addr}
The address and port that other nodes need to use to contact this node for
diff --git a/src/garage/main.rs b/src/garage/main.rs
index 4d8dcc67..e489fff0 100644
--- a/src/garage/main.rs
+++ b/src/garage/main.rs
@@ -203,7 +203,7 @@ async fn cli_command(opt: Opt) -> Result<(), Error> {
// Generate a temporary keypair for our RPC client
let (_pk, sk) = sodiumoxide::crypto::sign::ed25519::gen_keypair();
- let netapp = NetApp::new(GARAGE_VERSION_TAG, network_key, sk);
+ let netapp = NetApp::new(GARAGE_VERSION_TAG, network_key, sk, None);
// Find and parse the address of the target host
let (id, addr, is_default_addr) = if let Some(h) = opt.rpc_host {
diff --git a/src/net/netapp.rs b/src/net/netapp.rs
index b1ad9db8..faa51a99 100644
--- a/src/net/netapp.rs
+++ b/src/net/netapp.rs
@@ -13,7 +13,7 @@ use sodiumoxide::crypto::sign::ed25519;
use futures::stream::futures_unordered::FuturesUnordered;
use futures::stream::StreamExt;
-use tokio::net::{TcpListener, TcpStream};
+use tokio::net::{TcpListener, TcpSocket, TcpStream};
use tokio::select;
use tokio::sync::{mpsc, watch};
@@ -38,6 +38,11 @@ pub(crate) type VersionTag = [u8; 16];
/// Value of the Netapp version used in the version tag
pub(crate) const NETAPP_VERSION_TAG: u64 = 0x6e65746170700005; // netapp 0x0005
+/// HelloMessage is sent by the client on a Netapp connection to indicate
+/// that they are also a server and ready to recieve incoming connections
+/// at the specified address and port. If the client doesn't know their
+/// public address, they don't need to specify it and we look at the
+/// remote address of the socket is used instead.
#[derive(Serialize, Deserialize, Debug)]
pub(crate) struct HelloMessage {
pub server_addr: Option<IpAddr>,
@@ -56,10 +61,8 @@ type OnDisconnectHandler = Box<dyn Fn(NodeID, bool) + Send + Sync>;
/// NetApp can be used in a stand-alone fashion or together with a peering strategy.
/// If using it alone, you will want to set `on_connect` and `on_disconnect` events
/// in order to manage information about the current peer list.
-///
-/// It is generally not necessary to use NetApp stand-alone, as the provided full mesh
-/// and RPS peering strategies take care of the most common use cases.
pub struct NetApp {
+ bind_outgoing_to: Option<IpAddr>,
listen_params: ArcSwapOption<ListenParams>,
/// Version tag, 8 bytes for netapp version, 8 bytes for app version
@@ -83,7 +86,7 @@ pub struct NetApp {
struct ListenParams {
listen_addr: SocketAddr,
- public_addr: Option<IpAddr>,
+ public_addr: Option<SocketAddr>,
}
impl NetApp {
@@ -92,13 +95,19 @@ impl NetApp {
/// using `.listen()`
///
/// Our Peer ID is the public key associated to the secret key given here.
- pub fn new(app_version_tag: u64, netid: auth::Key, privkey: ed25519::SecretKey) -> Arc<Self> {
+ pub fn new(
+ app_version_tag: u64,
+ netid: auth::Key,
+ privkey: ed25519::SecretKey,
+ bind_outgoing_to: Option<IpAddr>,
+ ) -> Arc<Self> {
let mut version_tag = [0u8; 16];
version_tag[0..8].copy_from_slice(&u64::to_be_bytes(NETAPP_VERSION_TAG)[..]);
version_tag[8..16].copy_from_slice(&u64::to_be_bytes(app_version_tag)[..]);
let id = privkey.public_key();
let netapp = Arc::new(Self {
+ bind_outgoing_to,
listen_params: ArcSwapOption::new(None),
version_tag,
netid,
@@ -180,7 +189,7 @@ impl NetApp {
pub async fn listen(
self: Arc<Self>,
listen_addr: SocketAddr,
- public_addr: Option<IpAddr>,
+ public_addr: Option<SocketAddr>,
mut must_exit: watch::Receiver<bool>,
) {
let listen_params = ListenParams {
@@ -298,9 +307,20 @@ impl NetApp {
return Ok(());
}
- let socket = TcpStream::connect(ip).await?;
+ let stream = match self.bind_outgoing_to {
+ Some(addr) => {
+ let socket = if addr.is_ipv4() {
+ TcpSocket::new_v4()?
+ } else {
+ TcpSocket::new_v6()?
+ };
+ socket.bind(SocketAddr::new(addr, 0))?;
+ socket.connect(ip).await?
+ }
+ None => TcpStream::connect(ip).await?,
+ };
info!("Connected to {}, negotiating handshake...", ip);
- ClientConn::init(self, socket, id).await?;
+ ClientConn::init(self, stream, id).await?;
Ok(())
}
@@ -396,8 +416,11 @@ impl NetApp {
}
if let Some(lp) = self.listen_params.load_full() {
- let server_addr = lp.public_addr;
- let server_port = lp.listen_addr.port();
+ let server_addr = lp.public_addr.map(|x| x.ip());
+ let server_port = lp
+ .public_addr
+ .map(|x| x.port())
+ .unwrap_or(lp.listen_addr.port());
let hello_endpoint = self.hello_endpoint.load_full().unwrap();
tokio::spawn(async move {
hello_endpoint
diff --git a/src/net/test.rs b/src/net/test.rs
index c6259752..5a3f236d 100644
--- a/src/net/test.rs
+++ b/src/net/test.rs
@@ -102,7 +102,7 @@ fn run_netapp(
Arc<NetApp>,
Arc<PeeringManager>,
) {
- let netapp = NetApp::new(0u64, netid, sk);
+ let netapp = NetApp::new(0u64, netid, sk, None);
let peering = PeeringManager::new(netapp.clone(), bootstrap_peers, None);
let peering2 = peering.clone();
diff --git a/src/rpc/system.rs b/src/rpc/system.rs
index de44e656..147ec4d6 100644
--- a/src/rpc/system.rs
+++ b/src/rpc/system.rs
@@ -98,7 +98,6 @@ pub struct System {
system_endpoint: Arc<Endpoint<SystemRpc, System>>,
rpc_listen_addr: SocketAddr,
- #[cfg(any(feature = "consul-discovery", feature = "kubernetes-discovery"))]
rpc_public_addr: Option<SocketAddr>,
bootstrap_peers: Vec<String>,
@@ -325,7 +324,10 @@ impl System {
warn!("This Garage node does not know its publicly reachable RPC address, this might hamper intra-cluster communication.");
}
- let netapp = NetApp::new(GARAGE_VERSION_TAG, network_key, node_key);
+ let bind_outgoing_to = Some(config)
+ .filter(|x| x.rpc_bind_outgoing)
+ .map(|x| x.rpc_bind_addr.ip());
+ let netapp = NetApp::new(GARAGE_VERSION_TAG, network_key, node_key, bind_outgoing_to);
let peering = PeeringManager::new(netapp.clone(), vec![], rpc_public_addr);
if let Some(ping_timeout) = config.rpc_ping_timeout_msec {
peering.set_ping_timeout_millis(ping_timeout);
@@ -369,7 +371,6 @@ impl System {
replication_mode,
replication_factor,
rpc_listen_addr: config.rpc_bind_addr,
- #[cfg(any(feature = "consul-discovery", feature = "kubernetes-discovery"))]
rpc_public_addr,
bootstrap_peers: config.bootstrap_peers.clone(),
#[cfg(feature = "consul-discovery")]
@@ -390,9 +391,11 @@ impl System {
/// Perform bootstraping, starting the ping loop
pub async fn run(self: Arc<Self>, must_exit: watch::Receiver<bool>) {
join!(
- self.netapp
- .clone()
- .listen(self.rpc_listen_addr, None, must_exit.clone()),
+ self.netapp.clone().listen(
+ self.rpc_listen_addr,
+ self.rpc_public_addr,
+ must_exit.clone()
+ ),
self.peering.clone().run(must_exit.clone()),
self.discovery_loop(must_exit.clone()),
self.status_exchange_loop(must_exit.clone()),
diff --git a/src/util/config.rs b/src/util/config.rs
index a9a72110..056c625d 100644
--- a/src/util/config.rs
+++ b/src/util/config.rs
@@ -55,6 +55,9 @@ pub struct Config {
pub rpc_secret_file: Option<PathBuf>,
/// Address to bind for RPC
pub rpc_bind_addr: SocketAddr,
+ /// Bind outgoing sockets to rpc_bind_addr's IP address as well
+ #[serde(default)]
+ pub rpc_bind_outgoing: bool,
/// Public IP address of this node
pub rpc_public_addr: Option<String>,