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refactor net bind, wip

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This commit is contained in:
John Smith 2024-04-25 21:32:35 -04:00
parent 82d107f446
commit 03e872c128
10 changed files with 287 additions and 521 deletions
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39
veilid-core/src/network_manager/native/mod.rs
View File

@ -15,6 +15,7 @@ use protocol::tcp::RawTcpProtocolHandler;
use protocol::udp::RawUdpProtocolHandler;
use protocol::ws::WebsocketProtocolHandler;
pub(in crate::network_manager) use protocol::*;
use start_protocols::*;
use async_tls::TlsAcceptor;
use futures_util::StreamExt;
@ -104,18 +105,12 @@ struct NetworkInner {
network_already_cleared: bool,
/// the punishment closure to enax
public_dial_info_check_punishment: Option<Box<dyn FnOnce() + Send + 'static>>,
/// udp socket record for bound-first sockets, which are used to guarantee a port is available before
/// creating a 'reuseport' socket there. we don't want to pick ports that other programs are using
bound_first_udp: BTreeMap<u16, (Option<socket2::Socket>, Option<socket2::Socket>)>,
/// mapping of protocol handlers to accept messages from a set of bound socket addresses
inbound_udp_protocol_handlers: BTreeMap<SocketAddr, RawUdpProtocolHandler>,
udp_protocol_handlers: BTreeMap<SocketAddr, RawUdpProtocolHandler>,
/// outbound udp protocol handler for udpv4
outbound_udpv4_protocol_handler: Option<RawUdpProtocolHandler>,
default_udpv4_protocol_handler: Option<RawUdpProtocolHandler>,
/// outbound udp protocol handler for udpv6
outbound_udpv6_protocol_handler: Option<RawUdpProtocolHandler>,
/// tcp socket record for bound-first sockets, which are used to guarantee a port is available before
/// creating a 'reuseport' socket there. we don't want to pick ports that other programs are using
bound_first_tcp: BTreeMap<u16, (Option<socket2::Socket>, Option<socket2::Socket>)>,
default_udpv6_protocol_handler: Option<RawUdpProtocolHandler>,
/// TLS handling socket controller
tls_acceptor: Option<TlsAcceptor>,
/// Multiplexer record for protocols on low level TCP sockets
@ -164,11 +159,9 @@ impl Network {
enable_ipv4: false,
enable_ipv6_global: false,
enable_ipv6_local: false,
bound_first_udp: BTreeMap::new(),
inbound_udp_protocol_handlers: BTreeMap::new(),
outbound_udpv4_protocol_handler: None,
outbound_udpv6_protocol_handler: None,
bound_first_tcp: BTreeMap::new(),
udp_protocol_handlers: BTreeMap::new(),
default_udpv4_protocol_handler: None,
default_udpv6_protocol_handler: None,
tls_acceptor: None,
listener_states: BTreeMap::new(),
}
@ -332,17 +325,6 @@ impl Network {
}
}
pub fn get_local_port(&self, protocol_type: ProtocolType) -> Option<u16> {
let inner = self.inner.lock();
let local_port = match protocol_type {
ProtocolType::UDP => inner.udp_port,
ProtocolType::TCP => inner.tcp_port,
ProtocolType::WS => inner.ws_port,
ProtocolType::WSS => inner.wss_port,
};
Some(local_port)
}
pub fn get_preferred_local_address(&self, dial_info: &DialInfo) -> Option<SocketAddr> {
let inner = self.inner.lock();
@ -846,7 +828,7 @@ impl Network {
// start listeners
if protocol_config.inbound.contains(ProtocolType::UDP) {
self.start_udp_listeners(&mut editor_public_internet, &mut editor_local_network)
self.bind_udp_protocol_handlers(&mut editor_public_internet, &mut editor_local_network)
.await?;
}
if protocol_config.inbound.contains(ProtocolType::WS) {
@ -862,11 +844,6 @@ impl Network {
.await?;
}
// release caches of available listener ports
// this releases the 'first bound' ports we use to guarantee
// that we have ports available to us
self.free_bound_first_ports();
editor_public_internet.setup_network(
protocol_config.outbound,
protocol_config.inbound,

116
veilid-core/src/network_manager/native/network_tcp.rs
View File

@ -237,7 +237,7 @@ impl Network {
}
}
async fn spawn_socket_listener(&self, addr: SocketAddr) -> EyreResult<()> {
async fn spawn_socket_listener(&self, addr: SocketAddr) -> EyreResult<bool> {
// Get config
let (connection_initial_timeout_ms, tls_connection_initial_timeout_ms) = {
let c = self.config.get();
@ -248,12 +248,15 @@ impl Network {
};
// Create a reusable socket with no linger time, and no delay
let socket = new_bound_shared_tcp_socket(addr)
.wrap_err("failed to create bound shared tcp socket")?;
let Some(socket) = new_bound_shared_tcp_socket(addr)
.wrap_err("failed to create bound shared tcp socket")?
else {
return Ok(false);
};
// Listen on the socket
socket
.listen(128)
.wrap_err("Couldn't listen on TCP socket")?;
if socket.listen(128).is_err() {
return Ok(false);
}
// Make an async tcplistener from the socket2 socket
let std_listener: std::net::TcpListener = socket.into();
@ -324,7 +327,7 @@ impl Network {
// Add to join handles
self.add_to_join_handles(jh);
Ok(())
Ok(true)
}
/////////////////////////////////////////////////////////////////
@ -332,51 +335,76 @@ impl Network {
// TCP listener that multiplexes ports so multiple protocols can exist on a single port
pub(super) async fn start_tcp_listener(
&self,
ip_addrs: Vec<IpAddr>,
port: u16,
bind_set: NetworkBindSet,
is_tls: bool,
new_protocol_accept_handler: Box<NewProtocolAcceptHandler>,
) -> EyreResult<Vec<SocketAddress>> {
let mut out = Vec::<SocketAddress>::new();
for ip_addr in ip_addrs {
let addr = SocketAddr::new(ip_addr, port);
let idi_addrs = self.translate_unspecified_address(&addr);
for ip_addr in bind_set.addrs {
let mut port = bind_set.port;
loop {
let addr = SocketAddr::new(ip_addr, port);
// see if we've already bound to this already
// if not, spawn a listener
if !self.inner.lock().listener_states.contains_key(&addr) {
self.clone().spawn_socket_listener(addr).await?;
}
let ls = if let Some(ls) = self.inner.lock().listener_states.get_mut(&addr) {
ls.clone()
} else {
panic!("this shouldn't happen");
};
if is_tls {
if ls.read().tls_acceptor.is_none() {
ls.write().tls_acceptor = Some(self.clone().get_or_create_tls_acceptor()?);
// see if we've already bound to this already
// if not, spawn a listener
let mut got_listener = false;
if !self.inner.lock().listener_states.contains_key(&addr) {
if self.clone().spawn_socket_listener(addr).await? {
got_listener = true;
}
} else {
got_listener = true;
}
ls.write()
.tls_protocol_handlers
.push(new_protocol_accept_handler(
self.network_manager().config(),
true,
));
} else {
ls.write()
.protocol_accept_handlers
.push(new_protocol_accept_handler(
self.network_manager().config(),
false,
));
}
// Return interface dial infos we listen on
for idi_addr in idi_addrs {
out.push(SocketAddress::from_socket_addr(idi_addr));
if got_listener {
let ls = if let Some(ls) = self.inner.lock().listener_states.get_mut(&addr) {
ls.clone()
} else {
panic!("this shouldn't happen");
};
if is_tls {
if ls.read().tls_acceptor.is_none() {
ls.write().tls_acceptor =
Some(self.clone().get_or_create_tls_acceptor()?);
}
ls.write()
.tls_protocol_handlers
.push(new_protocol_accept_handler(
self.network_manager().config(),
true,
));
} else {
ls.write()
.protocol_accept_handlers
.push(new_protocol_accept_handler(
self.network_manager().config(),
false,
));
}
// Return interface dial infos we listen on
let idi_addrs = self.translate_unspecified_address(&addr);
for idi_addr in idi_addrs {
out.push(SocketAddress::from_socket_addr(idi_addr));
}
break;
}
if !bind_set.search {
bail!("unable to bind to tcp {}", addr);
}
if port == 65535u16 {
port = 1024;
} else {
port += 1;
}
if port == bind_set.port {
bail!("unable to find a free port for tcp {}", ip_addr);
}
}
}

171
veilid-core/src/network_manager/native/network_udp.rs
View File

@ -27,19 +27,13 @@ impl Network {
log_net!("UDP listener task spawned");
// Collect all our protocol handlers into a vector
let mut protocol_handlers: Vec<RawUdpProtocolHandler> = this
let protocol_handlers: Vec<RawUdpProtocolHandler> = this
.inner
.lock()
.inbound_udp_protocol_handlers
.udp_protocol_handlers
.values()
.cloned()
.collect();
if let Some(ph) = this.inner.lock().outbound_udpv4_protocol_handler.clone() {
protocol_handlers.push(ph);
}
if let Some(ph) = this.inner.lock().outbound_udpv6_protocol_handler.clone() {
protocol_handlers.push(ph);
}
// Spawn a local async task for each socket
let mut protocol_handlers_unordered = FuturesUnordered::new();
@ -114,77 +108,13 @@ impl Network {
Ok(())
}
pub(super) async fn create_udp_outbound_sockets(&self) -> EyreResult<()> {
let mut inner = self.inner.lock();
let mut port = inner.udp_port;
// v4
let socket_addr_v4 = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), port);
if let Ok(socket) = new_bound_shared_udp_socket(socket_addr_v4) {
// Pull the port if we randomly bound, so v6 can be on the same port
port = socket
.local_addr()
.wrap_err("failed to get local address")?
.as_socket_ipv4()
.ok_or_else(|| eyre!("expected ipv4 address type"))?
.port();
// Make an async UdpSocket from the socket2 socket
let std_udp_socket: std::net::UdpSocket = socket.into();
cfg_if! {
if #[cfg(feature="rt-async-std")] {
let udp_socket = UdpSocket::from(std_udp_socket);
} else if #[cfg(feature="rt-tokio")] {
std_udp_socket.set_nonblocking(true).expect("failed to set nonblocking");
let udp_socket = UdpSocket::from_std(std_udp_socket).wrap_err("failed to make outbound v4 tokio udpsocket")?;
} else {
compile_error!("needs executor implementation")
}
}
let socket_arc = Arc::new(udp_socket);
// Create protocol handler
let udpv4_handler = RawUdpProtocolHandler::new(
socket_arc,
Some(self.network_manager().address_filter()),
);
inner.outbound_udpv4_protocol_handler = Some(udpv4_handler);
}
//v6
let socket_addr_v6 =
SocketAddr::new(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0)), port);
if let Ok(socket) = new_bound_shared_udp_socket(socket_addr_v6) {
// Make an async UdpSocket from the socket2 socket
let std_udp_socket: std::net::UdpSocket = socket.into();
cfg_if! {
if #[cfg(feature="rt-async-std")] {
let udp_socket = UdpSocket::from(std_udp_socket);
} else if #[cfg(feature="rt-tokio")] {
std_udp_socket.set_nonblocking(true).expect("failed to set nonblocking");
let udp_socket = UdpSocket::from_std(std_udp_socket).wrap_err("failed to make outbound v6 tokio udpsocket")?;
} else {
compile_error!("needs executor implementation")
}
}
let socket_arc = Arc::new(udp_socket);
// Create protocol handler
let udpv6_handler = RawUdpProtocolHandler::new(
socket_arc,
Some(self.network_manager().address_filter()),
);
inner.outbound_udpv6_protocol_handler = Some(udpv6_handler);
}
Ok(())
}
async fn create_udp_inbound_socket(&self, addr: SocketAddr) -> EyreResult<()> {
log_net!("create_udp_inbound_socket on {:?}", &addr);
async fn create_udp_protocol_handler(&self, addr: SocketAddr) -> EyreResult<bool> {
log_net!("create_udp_protocol_handler on {:?}", &addr);
// Create a reusable socket
let socket = new_bound_shared_udp_socket(addr)?;
let Some(socket) = new_bound_default_udp_socket(addr)? else {
return Ok(false);
};
// Make an async UdpSocket from the socket2 socket
let std_udp_socket: std::net::UdpSocket = socket.into();
@ -204,40 +134,58 @@ impl Network {
let protocol_handler =
RawUdpProtocolHandler::new(socket_arc, Some(self.network_manager().address_filter()));
// Create message_handler records
self.inner
.lock()
.inbound_udp_protocol_handlers
.insert(addr, protocol_handler);
// Record protocol handler
let mut inner = self.inner.lock();
inner
.udp_protocol_handlers
.insert(addr, protocol_handler.clone());
if addr.is_ipv4() && inner.default_udpv4_protocol_handler.is_none() {
inner.default_udpv4_protocol_handler = Some(protocol_handler);
} else if addr.is_ipv6() && inner.default_udpv6_protocol_handler.is_none() {
inner.default_udpv6_protocol_handler = Some(protocol_handler);
}
Ok(())
Ok(true)
}
pub(super) async fn create_udp_inbound_sockets(
pub(super) async fn create_udp_protocol_handlers(
&self,
ip_addrs: Vec<IpAddr>,
port: u16,
bind_set: NetworkBindSet,
) -> EyreResult<Vec<DialInfo>> {
let mut out = Vec::<DialInfo>::new();
for ip_addr in ip_addrs {
let addr = SocketAddr::new(ip_addr, port);
for ip_addr in bind_set.addrs {
let mut port = bind_set.port;
loop {
let addr = SocketAddr::new(ip_addr, port);
// see if we've already bound to this already
// if not, spawn a listener
if !self
.inner
.lock()
.inbound_udp_protocol_handlers
.contains_key(&addr)
{
let idi_addrs = self.translate_unspecified_address(&addr);
// see if we've already bound to this already
// if not, spawn a listener
if !self.inner.lock().udp_protocol_handlers.contains_key(&addr) {
let bound = self.clone().create_udp_protocol_handler(addr).await?;
self.clone().create_udp_inbound_socket(addr).await?;
// Return interface dial infos we listen on
if bound {
let idi_addrs = self.translate_unspecified_address(&addr);
for idi_addr in idi_addrs {
out.push(DialInfo::udp_from_socketaddr(idi_addr));
}
break;
}
}
// Return interface dial infos we listen on
for idi_addr in idi_addrs {
out.push(DialInfo::udp_from_socketaddr(idi_addr));
if !bind_set.search {
bail!("unable to bind to udp {}", addr);
}
if port == 65535u16 {
port = 1024;
} else {
port += 1;
}
if port == bind_set.port {
bail!("unable to find a free port for udp {}", ip_addr);
}
}
}
@ -251,18 +199,31 @@ impl Network {
peer_socket_addr: &SocketAddr,
local_socket_addr: &Option<SocketAddr>,
) -> Option<RawUdpProtocolHandler> {
let inner = self.inner.lock();
// if our last communication with this peer came from a particular inbound udp protocol handler, use it
if let Some(sa) = local_socket_addr {
if let Some(ph) = self.inner.lock().inbound_udp_protocol_handlers.get(sa) {
if let Some(ph) = inner.udp_protocol_handlers.get(sa) {
return Some(ph.clone());
}
}
// otherwise find the outbound udp protocol handler that matches the ip protocol version of the peer addr
// otherwise find the first outbound udp protocol handler that matches the ip protocol version of the peer addr
let inner = self.inner.lock();
match peer_socket_addr {
SocketAddr::V4(_) => inner.outbound_udpv4_protocol_handler.clone(),
SocketAddr::V6(_) => inner.outbound_udpv6_protocol_handler.clone(),
SocketAddr::V4(_) => inner.udp_protocol_handlers.iter().find_map(|x| {
if x.0.is_ipv4() {
Some(x.1.clone())
} else {
None
}
}),
SocketAddr::V6(_) => inner.udp_protocol_handlers.iter().find_map(|x| {
if x.0.is_ipv6() {
Some(x.1.clone())
} else {
None
}
}),
}
}
}

107
veilid-core/src/network_manager/native/protocol/sockets.rs
View File

@ -36,7 +36,7 @@ cfg_if! {
}
#[instrument(level = "trace", ret)]
pub fn new_unbound_shared_udp_socket(domain: Domain) -> io::Result<Socket> {
pub fn new_shared_udp_socket(domain: Domain) -> io::Result<Socket> {
let socket = Socket::new(domain, Type::DGRAM, Some(Protocol::UDP))?;
if domain == Domain::IPV6 {
socket.set_only_v6(true)?;
@ -52,56 +52,28 @@ pub fn new_unbound_shared_udp_socket(domain: Domain) -> io::Result<Socket> {
}
#[instrument(level = "trace", ret)]
pub fn new_bound_shared_udp_socket(local_address: SocketAddr) -> io::Result<Socket> {
let domain = Domain::for_address(local_address);
let socket = new_unbound_shared_udp_socket(domain)?;
let socket2_addr = SockAddr::from(local_address);
socket.bind(&socket2_addr)?;
log_net!("created bound shared udp socket on {:?}", &local_address);
pub fn new_default_udp_socket(domain: Domain) -> io::Result<Socket> {
let socket = Socket::new(domain, Type::DGRAM, Some(Protocol::UDP))?;
if domain == Domain::IPV6 {
socket.set_only_v6(true)?;
}
Ok(socket)
}
#[instrument(level = "trace", ret)]
pub fn new_bound_first_udp_socket(local_address: SocketAddr) -> io::Result<Socket> {
pub fn new_bound_default_udp_socket(local_address: SocketAddr) -> io::Result<Option<Socket>> {
let domain = Domain::for_address(local_address);
let socket = Socket::new(domain, Type::DGRAM, Some(Protocol::UDP))?;
if domain == Domain::IPV6 {
socket.set_only_v6(true)?;
}
// Bind the socket -first- before turning on 'reuse address' this way it will
// fail if the port is already taken
let socket = new_default_udp_socket(domain)?;
let socket2_addr = SockAddr::from(local_address);
// On windows, do SO_EXCLUSIVEADDRUSE before the bind to ensure the port is fully available
cfg_if! {
if #[cfg(windows)] {
set_exclusiveaddruse(&socket)?;
}
if socket.bind(&socket2_addr).is_err() {
return Ok(None);
}
// Bind the socket -first- without turning on SO_REUSEPORT this way it will
// fail if the port is already taken
cfg_if! {
if #[cfg(unix)] {
socket
.set_reuse_address(true)?;
}
}
log_net!("created bound default udp socket on {:?}", &local_address);
socket.bind(&socket2_addr)?;
// Set 'reuse address' so future binds to this port will succeed
// This does not work on Windows, where reuse options can not be set after the bind
cfg_if! {
if #[cfg(unix)] {
socket.set_reuse_port(true)?;
}
}
log_net!("created bound first udp socket on {:?}", &local_address);
Ok(socket)
Ok(Some(socket))
}
#[instrument(level = "trace", ret)]
@ -139,62 +111,17 @@ pub fn new_unbound_shared_tcp_socket(domain: Domain) -> io::Result<Socket> {
}
#[instrument(level = "trace", ret)]
pub fn new_bound_shared_tcp_socket(local_address: SocketAddr) -> io::Result<Socket> {
pub fn new_bound_shared_tcp_socket(local_address: SocketAddr) -> io::Result<Option<Socket>> {
let domain = Domain::for_address(local_address);
let socket = new_unbound_shared_tcp_socket(domain)?;
let socket2_addr = SockAddr::from(local_address);
socket.bind(&socket2_addr)?;
if socket.bind(&socket2_addr).is_err() {
return Ok(None);
}
log_net!("created bound shared tcp socket on {:?}", &local_address);
Ok(socket)
}
#[instrument(level = "trace", ret)]
pub fn new_bound_first_tcp_socket(local_address: SocketAddr) -> io::Result<Socket> {
let domain = Domain::for_address(local_address);
let socket = Socket::new(domain, Type::STREAM, Some(Protocol::TCP))?;
// if let Err(e) = socket.set_linger(Some(core::time::Duration::from_secs(0))) {
// log_net!(error "Couldn't set TCP linger: {}", e);
// }
if let Err(e) = socket.set_nodelay(true) {
log_net!(error "Couldn't set TCP nodelay: {}", e);
}
if domain == Domain::IPV6 {
socket.set_only_v6(true)?;
}
// On windows, do SO_EXCLUSIVEADDRUSE before the bind to ensure the port is fully available
cfg_if! {
if #[cfg(windows)] {
set_exclusiveaddruse(&socket)?;
}
}
// Bind the socket -first- without turning on SO_REUSEPORT this way it will
// fail if the port is already taken
let socket2_addr = SockAddr::from(local_address);
cfg_if! {
if #[cfg(unix)] {
socket
.set_reuse_address(true)?;
}
}
socket.bind(&socket2_addr)?;
// Set 'reuse address' so future binds to this port will succeed
// This does not work on Windows, where reuse options can not be set after the bind
cfg_if! {
if #[cfg(unix)] {
socket.set_reuse_port(true)?;
}
}
log_net!("created bound first tcp socket on {:?}", &local_address);
Ok(socket)
Ok(Some(socket))
}
// Non-blocking connect is tricky when you want to start with a prepared socket

4
veilid-core/src/network_manager/native/protocol/tcp.rs
View File

@ -169,7 +169,9 @@ impl RawTcpProtocolHandler {
) -> io::Result<NetworkResult<ProtocolNetworkConnection>> {
// Make a shared socket
let socket = match local_address {
Some(a) => new_bound_shared_tcp_socket(a)?,
Some(a) => {
new_bound_shared_tcp_socket(a)?.ok_or(io::Error::from(io::ErrorKind::AddrInUse))?
}
None => new_unbound_tcp_socket(socket2::Domain::for_address(socket_addr))?,
};

2
veilid-core/src/network_manager/native/protocol/udp.rs
View File

@ -128,6 +128,8 @@ impl RawUdpProtocolHandler {
SocketAddress::from_socket_addr(local_socket_addr),
);
eprintln!("udp::send_message: {:?}", flow);
#[cfg(feature = "verbose-tracing")]
tracing::Span::current().record("ret.flow", format!("{:?}", flow).as_str());
Ok(NetworkResult::value(flow))

4
veilid-core/src/network_manager/native/protocol/ws.rs
View File

@ -319,7 +319,9 @@ impl WebsocketProtocolHandler {
// Make a shared socket
let socket = match local_address {
Some(a) => new_bound_shared_tcp_socket(a)?,
Some(a) => {
new_bound_shared_tcp_socket(a)?.ok_or(io::Error::from(io::ErrorKind::AddrInUse))?
}
None => new_unbound_tcp_socket(socket2::Domain::for_address(remote_socket_addr))?,
};

354
veilid-core/src/network_manager/native/start_protocols.rs
View File

@ -1,4 +1,3 @@
use super::sockets::*;
use super::*;
use lazy_static::*;
@ -74,152 +73,29 @@ lazy_static! {
]);
}
pub(super) struct NetworkBindSet {
pub port: u16,
pub addrs: Vec<IpAddr>,
pub search: bool,
}
impl Network {
/////////////////////////////////////////////////////
// Support for binding first on ports to ensure nobody binds ahead of us
// or two copies of the app don't accidentally collide. This is tricky
// because we use 'reuseaddr/port' and we can accidentally bind in front of ourselves :P
fn bind_first_udp_port(&self, udp_port: u16) -> bool {
let mut inner = self.inner.lock();
if inner.bound_first_udp.contains_key(&udp_port) {
return true;
}
// Check for ipv6
let has_v6 = is_ipv6_supported();
// If the address is specified, only use the specified port and fail otherwise
let mut bound_first_socket_v4 = None;
let mut bound_first_socket_v6 = None;
if let Ok(bfs4) =
new_bound_first_udp_socket(SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), udp_port))
{
if has_v6 {
if let Ok(bfs6) = new_bound_first_udp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
udp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
} else {
bound_first_socket_v4 = Some(bfs4);
}
}
if bound_first_socket_v4.is_none() && (has_v6 && bound_first_socket_v6.is_none()) {
return false;
}
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
inner.bound_first_udp.insert(udp_port, (None, None));
} else {
inner.bound_first_udp.insert(udp_port, (bound_first_socket_v4, bound_first_socket_v6));
}
}
true
}
fn bind_first_tcp_port(&self, tcp_port: u16) -> bool {
let mut inner = self.inner.lock();
if inner.bound_first_tcp.contains_key(&tcp_port) {
return true;
}
// Check for ipv6
let has_v6 = is_ipv6_supported();
// If the address is specified, only use the specified port and fail otherwise
let mut bound_first_socket_v4 = None;
let mut bound_first_socket_v6 = None;
if let Ok(bfs4) =
new_bound_first_tcp_socket(SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), tcp_port))
{
if has_v6 {
if let Ok(bfs6) = new_bound_first_tcp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
tcp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
} else {
bound_first_socket_v4 = Some(bfs4);
}
}
if bound_first_socket_v4.is_none() && (has_v6 && bound_first_socket_v6.is_none()) {
return false;
}
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
inner.bound_first_tcp.insert(tcp_port, (None, None));
} else {
inner.bound_first_tcp.insert(tcp_port, (bound_first_socket_v4, bound_first_socket_v6));
}
}
true
}
pub(super) fn free_bound_first_ports(&self) {
let mut inner = self.inner.lock();
inner.bound_first_udp.clear();
inner.bound_first_tcp.clear();
}
/////////////////////////////////////////////////////
fn find_available_udp_port(&self, start_port: u16) -> EyreResult<u16> {
// If the address is empty, iterate ports until we find one we can use.
let mut udp_port = start_port;
loop {
if BAD_PORTS.contains(&udp_port) {
continue;
}
if self.bind_first_udp_port(udp_port) {
break;
}
if udp_port == 65535 {
bail!("Could not find free udp port to listen on");
}
udp_port += 1;
}
Ok(udp_port)
}
fn find_available_tcp_port(&self, start_port: u16) -> EyreResult<u16> {
// If the address is empty, iterate ports until we find one we can use.
let mut tcp_port = start_port;
loop {
if BAD_PORTS.contains(&tcp_port) {
continue;
}
if self.bind_first_tcp_port(tcp_port) {
break;
}
if tcp_port == 65535 {
bail!("Could not find free tcp port to listen on");
}
tcp_port += 1;
}
Ok(tcp_port)
}
async fn allocate_udp_port(&self, listen_address: String) -> EyreResult<(u16, Vec<IpAddr>)> {
// Returns a port, a set of ip addresses to bind to, and a
// bool specifying if multiple ports should be tried
async fn convert_listen_address_to_bind_set(
&self,
listen_address: String,
) -> EyreResult<NetworkBindSet> {
if listen_address.is_empty() {
// If listen address is empty, find us a port iteratively
let port = self.find_available_udp_port(5150)?;
// If listen address is empty, start with port 5150 and iterate
let ip_addrs = available_unspecified_addresses();
Ok((port, ip_addrs))
Ok(NetworkBindSet {
port: 5150,
addrs: ip_addrs,
search: true,
})
} else {
// If no address is specified, but the port is, use ipv4 and ipv6 unspecified
// If the address is specified, only use the specified port and fail otherwise
@ -229,58 +105,30 @@ impl Network {
bail!("No valid listen address: {}", listen_address);
}
let port = sockaddrs[0].port();
Ok((port, sockaddrs.iter().map(|s| s.ip()).collect()))
}
}
async fn allocate_tcp_port(&self, listen_address: String) -> EyreResult<(u16, Vec<IpAddr>)> {
if listen_address.is_empty() {
// If listen address is empty, find us a port iteratively
let port = self.find_available_tcp_port(5150)?;
let ip_addrs = available_unspecified_addresses();
Ok((port, ip_addrs))
} else {
// If no address is specified, but the port is, use ipv4 and ipv6 unspecified
// If the address is specified, only use the specified port and fail otherwise
let sockaddrs =
listen_address_to_socket_addrs(&listen_address).map_err(|e| eyre!("{}", e))?;
if sockaddrs.is_empty() {
bail!("No valid listen address: {}", listen_address);
if port == 0 {
Ok(NetworkBindSet {
port: 5150,
addrs: sockaddrs.iter().map(|s| s.ip()).collect(),
search: true,
})
} else {
Ok(NetworkBindSet {
port,
addrs: sockaddrs.iter().map(|s| s.ip()).collect(),
search: false,
})
}
let port = sockaddrs[0].port();
let mut attempts = 10;
let mut success = false;
while attempts >= 0 {
if self.bind_first_tcp_port(port) {
success = true;
break;
}
attempts -= 1;
// Wait 5 seconds before trying again
log_net!(debug
"Binding TCP port at {} failed, waiting. Attempts remaining = {}",
port, attempts
);
sleep(5000).await
}
if !success {
bail!("Could not find free tcp port to listen on");
}
Ok((port, sockaddrs.iter().map(|s| s.ip()).collect()))
}
}
/////////////////////////////////////////////////////
pub(super) async fn start_udp_listeners(
pub(super) async fn bind_udp_protocol_handlers(
&self,
editor_public_internet: &mut RoutingDomainEditor,
editor_local_network: &mut RoutingDomainEditor,
) -> EyreResult<()> {
log_net!("starting udp listeners");
log_net!("UDP: binding protocol handlers");
let routing_table = self.routing_table();
let (listen_address, public_address, detect_address_changes) = {
let c = self.config.get();
@ -291,28 +139,30 @@ impl Network {
)
};
// Pick out UDP port we're going to use everywhere
// Keep sockets around until the end of this function
// to keep anyone else from binding in front of us
let (udp_port, ip_addrs) = self.allocate_udp_port(listen_address.clone()).await?;
// Save the bound udp port for use later on
self.inner.lock().udp_port = udp_port;
// First, create outbound sockets
// (unlike tcp where we create sockets for every connection)
// and we'll add protocol handlers for them too
self.create_udp_outbound_sockets().await?;
// Get the binding parameters from the user-specified listen address
let bind_set = self
.convert_listen_address_to_bind_set(listen_address.clone())
.await?;
// Now create udp inbound sockets for whatever interfaces we're listening on
info!(
"UDP: starting listeners on port {} at {:?}",
udp_port, ip_addrs
);
let local_dial_info_list = self.create_udp_inbound_sockets(ip_addrs, udp_port).await?;
if bind_set.search {
info!(
"UDP: searching for free port starting with {} on {:?}",
bind_set.port, bind_set.addrs
);
} else {
info!(
"UDP: binding protocol handlers at port {} on {:?}",
bind_set.port, bind_set.addrs
);
}
let local_dial_info_list = self.create_udp_protocol_handlers(bind_set).await?;
let mut static_public = false;
log_net!("UDP: listener started on {:#?}", local_dial_info_list);
log_net!(
"UDP: protocol handlers bound to {:#?}",
local_dial_info_list
);
// Register local dial info
for di in &local_dial_info_list {
@ -374,6 +224,8 @@ impl Network {
.insert(ProtocolType::UDP);
}
// xxx compile all dialinfo from editor into map of protocoltype+addresstype -> port for 'best port selection' code
// Now create tasks for udp listeners
self.create_udp_listener_tasks().await
}
@ -383,7 +235,7 @@ impl Network {
editor_public_internet: &mut RoutingDomainEditor,
editor_local_network: &mut RoutingDomainEditor,
) -> EyreResult<()> {
log_net!("starting ws listeners");
log_net!("WS: binding protocol handlers");
let routing_table = self.routing_table();
let (listen_address, url, path, detect_address_changes) = {
let c = self.config.get();
@ -395,27 +247,30 @@ impl Network {
)
};
// Pick out TCP port we're going to use everywhere
// Keep sockets around until the end of this function
// to keep anyone else from binding in front of us
let (ws_port, ip_addrs) = self.allocate_tcp_port(listen_address.clone()).await?;
// Get the binding parameters from the user-specified listen address
let bind_set = self
.convert_listen_address_to_bind_set(listen_address.clone())
.await?;
// Save the bound ws port for use later on
self.inner.lock().ws_port = ws_port;
info!(
"WS: starting listener on port {} at {:?}",
ws_port, ip_addrs
);
if bind_set.search {
info!(
"WS: searching for free port starting with {} on {:?}",
bind_set.port, bind_set.addrs
);
} else {
info!(
"WS: binding protocol handlers at port {} on {:?}",
bind_set.port, bind_set.addrs
);
}
let socket_addresses = self
.start_tcp_listener(
ip_addrs,
ws_port,
bind_set,
false,
Box::new(|c, t| Box::new(WebsocketProtocolHandler::new(c, t))),
)
.await?;
log_net!("WS: listener started on {:#?}", socket_addresses);
log_net!("WS: protocol handlers started on {:#?}", socket_addresses);
let mut static_public = false;
let mut registered_addresses: HashSet<IpAddr> = HashSet::new();
@ -493,7 +348,7 @@ impl Network {
editor_public_internet: &mut RoutingDomainEditor,
editor_local_network: &mut RoutingDomainEditor,
) -> EyreResult<()> {
log_net!("starting wss listeners");
log_net!("WSS: binding protocol handlers");
let (listen_address, url, detect_address_changes) = {
let c = self.config.get();
@ -504,27 +359,31 @@ impl Network {
)
};
// Pick out TCP port we're going to use everywhere
// Keep sockets around until the end of this function
// to keep anyone else from binding in front of us
let (wss_port, ip_addrs) = self.allocate_tcp_port(listen_address.clone()).await?;
// Get the binding parameters from the user-specified listen address
let bind_set = self
.convert_listen_address_to_bind_set(listen_address.clone())
.await?;
// Save the bound wss port for use later on
self.inner.lock().wss_port = wss_port;
if bind_set.search {
info!(
"WSS: searching for free port starting with {} on {:?}",
bind_set.port, bind_set.addrs
);
} else {
info!(
"WSS: binding protocol handlers at port {} on {:?}",
bind_set.port, bind_set.addrs
);
}
info!(
"WSS: starting listener on port {} at {:?}",
wss_port, ip_addrs
);
let socket_addresses = self
.start_tcp_listener(
ip_addrs,
wss_port,
bind_set,
true,
Box::new(|c, t| Box::new(WebsocketProtocolHandler::new(c, t))),
)
.await?;
log_net!("WSS: listener started on {:#?}", socket_addresses);
log_net!("WSS: protocol handlers started on {:#?}", socket_addresses);
// NOTE: No interface dial info for WSS, as there is no way to connect to a local dialinfo via TLS
// If the hostname is specified, it is the public dialinfo via the URL. If no hostname
@ -586,7 +445,7 @@ impl Network {
editor_public_internet: &mut RoutingDomainEditor,
editor_local_network: &mut RoutingDomainEditor,
) -> EyreResult<()> {
log_net!("starting tcp listeners");
log_net!("TCP: binding protocol handlers");
let routing_table = self.routing_table();
let (listen_address, public_address, detect_address_changes) = {
@ -598,27 +457,30 @@ impl Network {
)
};
// Pick out TCP port we're going to use everywhere
// Keep sockets around until the end of this function
// to keep anyone else from binding in front of us
let (tcp_port, ip_addrs) = self.allocate_tcp_port(listen_address.clone()).await?;
// Get the binding parameters from the user-specified listen address
let bind_set = self
.convert_listen_address_to_bind_set(listen_address.clone())
.await?;
// Save the bound tcp port for use later on
self.inner.lock().tcp_port = tcp_port;
info!(
"TCP: starting listener on port {} at {:?}",
tcp_port, ip_addrs
);
if bind_set.search {
info!(
"TCP: searching for free port starting with {} on {:?}",
bind_set.port, bind_set.addrs
);
} else {
info!(
"TCP: binding protocol handlers at port {} on {:?}",
bind_set.port, bind_set.addrs
);
}
let socket_addresses = self
.start_tcp_listener(
ip_addrs,
tcp_port,
bind_set,
false,
Box::new(|c, _| Box::new(RawTcpProtocolHandler::new(c))),
)
.await?;
log_net!("TCP: listener started on {:#?}", socket_addresses);
log_net!("TCP: protocol handlers started on {:#?}", socket_addresses);
let mut static_public = false;
let mut registered_addresses: HashSet<IpAddr> = HashSet::new();

2
veilid-flutter/example/pubspec.lock
View File

@ -458,7 +458,7 @@ packages:
path: ".."
relative: true
source: path
version: "0.3.0"
version: "0.3.1"
vm_service:
dependency: transitive
description:

9
veilid-tools/src/tools.rs
View File

@ -274,12 +274,17 @@ pub fn listen_address_to_socket_addrs(listen_address: &str) -> Result<Vec<Socket
} else if let Ok(port) = listen_address.parse::<u16>() {
ip_addrs.iter().map(|a| SocketAddr::new(*a, port)).collect()
} else {
let listen_address_with_port = if listen_address.contains(':') {
listen_address.to_string()
} else {
format!("{}:0", listen_address)
};
cfg_if! {
if #[cfg(target_arch = "wasm32")] {
use core::str::FromStr;
vec![SocketAddr::from_str(listen_address).map_err(|e| format!("Unable to parse address: {}",e))?]
vec![SocketAddr::from_str(listen_address_with_port).map_err(|e| format!("Unable to parse address: {}",e))?]
} else {
listen_address
listen_address_with_port
.to_socket_addrs()
.map_err(|e| format!("Unable to resolve address: {}", e))?
.collect()