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use std::{
collections::HashMap,
io::Read,
net::{IpAddr, SocketAddr},
thread::JoinHandle,
time::Duration,
};
use crate::{ip::to_canonical, messages::MessagesHandler};
use massa_channel::{receiver::MassaReceiver, sender::MassaSender, MassaChannel};
use massa_metrics::MassaMetrics;
use massa_models::version::VersionDeserializer;
use massa_protocol_exports::{PeerConnectionType, PeerId, PeerIdDeserializer, ProtocolConfig};
use massa_serialization::{DeserializeError, Deserializer};
use massa_time::MassaTime;
use peernet::{
error::{PeerNetError, PeerNetResult},
messages::MessagesHandler as PeerNetMessagesHandler,
transports::TransportType,
};
use tracing::debug;
use super::{
announcement::{AnnouncementDeserializer, AnnouncementDeserializerArgs},
models::PeerInfo,
SharedPeerDB,
};
use crate::wrap_network::ActiveConnectionsTrait;
const THREAD_NAME: &str = "pph-tester";
static_assertions::const_assert!(THREAD_NAME.len() < 16);
pub struct Tester {
pub handler: Option<JoinHandle<()>>,
}
#[allow(clippy::type_complexity)]
impl Tester {
pub fn run(
config: &ProtocolConfig,
active_connections: Box<dyn ActiveConnectionsTrait>,
peer_db: SharedPeerDB,
messages_handler: MessagesHandler,
target_out_connections: HashMap<String, (Vec<IpAddr>, usize)>,
default_target_out_connections: usize,
massa_metrics: MassaMetrics,
) -> (
(
MassaSender<(PeerId, HashMap<SocketAddr, TransportType>)>,
MassaReceiver<(PeerId, HashMap<SocketAddr, TransportType>)>,
),
Vec<Tester>,
) {
let mut testers = Vec::new();
// create shared channel between thread for launching test
let (test_sender, test_receiver) = MassaChannel::new(
"test_sender".to_string(),
Some(config.max_size_channel_commands_peer_testers),
);
for _ in 0..config.thread_tester_count {
testers.push(Tester::new(
peer_db.clone(),
active_connections.clone(),
config.clone(),
test_receiver.clone(),
messages_handler.clone(),
target_out_connections.clone(),
default_target_out_connections,
massa_metrics.clone(),
));
}
((test_sender, test_receiver), testers)
}
#[allow(clippy::too_many_arguments)]
pub fn tcp_handshake(
messages_handler: MessagesHandler,
peer_db: SharedPeerDB,
announcement_deserializer: AnnouncementDeserializer,
version_deserializer: VersionDeserializer,
peer_id_deserializer: PeerIdDeserializer,
addr: SocketAddr,
config: &ProtocolConfig,
massa_metrics: MassaMetrics,
) -> PeerNetResult<PeerId> {
let our_version = config.version;
let exec_handshake = || {
let mut socket =
std::net::TcpStream::connect_timeout(&addr, config.tester_timeout.into())
.map_err(|e| PeerNetError::PeerConnectionError.new("connect", e, None))?;
socket
.set_read_timeout(Some(config.tester_timeout.into()))
.map_err(|err| PeerNetError::PeerConnectionError.new("read timeout", err, None))?;
socket
.set_write_timeout(Some(config.tester_timeout.into()))
.map_err(|err| PeerNetError::PeerConnectionError.new("write timeout", err, None))?;
// data.receive() from Endpoint
let mut len_bytes = vec![0u8; 4];
socket
.read_exact(&mut len_bytes)
.map_err(|err| PeerNetError::PeerConnectionError.new("recv len", err, None))?;
let res_size = u32::from_be_bytes(len_bytes.try_into().map_err(|err| {
PeerNetError::PeerConnectionError.error("recv len", Some(format!("{:?}", err)))
})?);
if res_size > 1048576000 {
return Err(PeerNetError::InvalidMessage
.error("len too long", Some(format!("{:?}", res_size))));
}
let mut data = vec![0u8; res_size as usize];
socket
.read_exact(&mut data)
.map_err(|err| PeerNetError::PeerConnectionError.new("recv data", err, None))?;
// handshake
if data.is_empty() {
return Err(PeerNetError::HandshakeError.error(
"Tester Handshake",
Some(String::from("Peer didn't accepted us")),
));
}
let (data, peer_id) = peer_id_deserializer
.deserialize::<DeserializeError>(&data)
.map_err(|_| {
PeerNetError::HandshakeError.error(
"Massa Handshake",
Some("Failed to deserialize PeerId".to_string()),
)
})?;
let res = {
{
// check if peer is banned
let peer_db_read = peer_db.read();
if let Some(info) = peer_db_read.get_peers().get(&peer_id) {
if info.state == super::PeerState::Banned {
return Err(PeerNetError::HandshakeError
.error("Tester Handshake", Some(String::from("Peer is banned"))));
}
}
}
let (data, version) = version_deserializer
.deserialize::<DeserializeError>(data)
.map_err(|err| {
PeerNetError::HandshakeError.error(
"Tester Handshake",
Some(format!("Failed to deserialize version: {}", err)),
)
})?;
if !our_version.is_compatible(&version) {
return Err(PeerNetError::HandshakeError.error(
"Massa Handshake",
Some(format!("Received version incompatible: {}", version)),
));
}
let id = data.first().ok_or(
PeerNetError::HandshakeError
.error("Massa Handshake", Some("Failed to get id".to_string())),
)?;
match id {
0 => {
let (_, announcement) = announcement_deserializer
.deserialize::<DeserializeError>(data.get(1..).ok_or(
PeerNetError::HandshakeError.error(
"Massa Handshake",
Some("Failed to get buffer".to_string()),
),
)?)
.map_err(|err| {
PeerNetError::HandshakeError.error(
"Tester Handshake",
Some(format!("Failed to deserialize announcement: {}", err)),
)
})?;
if peer_id
.verify_signature(&announcement.hash, &announcement.signature)
.is_err()
{
return Err(PeerNetError::HandshakeError.error(
"Tester Handshake",
Some(String::from("Invalid signature")),
));
}
//TODO: Check ip we are connected match one of the announced ips
{
let mut peer_db_write = peer_db.write();
peer_db_write
.get_peers_mut()
.entry(peer_id)
.and_modify(|info| {
if let Some(last_announce) = &info.last_announce {
if last_announce.timestamp < announcement.timestamp {
info.last_announce = Some(announcement.clone());
}
} else {
info.last_announce = Some(announcement.clone());
}
info.state = super::PeerState::Trusted;
})
.or_insert(PeerInfo {
last_announce: Some(announcement),
state: super::PeerState::Trusted,
});
}
Ok(peer_id)
}
1 => {
messages_handler.handle(
data.get(1..).ok_or(PeerNetError::HandshakeError.error(
"Massa Handshake",
Some("Failed to get buffer".to_string()),
))?,
&peer_id,
)?;
Err(PeerNetError::HandshakeError.error(
"Massa Handshake",
Some("Tester Handshake failed received a message that our connection has been refused".to_string()),
))
//TODO: Add the peerdb but for now impossible as we don't have announcement and we need one to place in peerdb
}
_ => Err(PeerNetError::HandshakeError
.error("Massa handshake", Some("Invalid id".to_string()))),
}
};
{
let mut peer_db_write = peer_db.write();
// if handshake failed, we set the peer state to HandshakeFailed
if res.is_err() {
peer_db_write
.get_peers_mut()
.entry(peer_id)
.and_modify(|info| {
info.state = super::PeerState::HandshakeFailed;
})
.or_insert(PeerInfo {
last_announce: None,
state: super::PeerState::HandshakeFailed,
});
peer_db_write.set_try_connect_test_failure_or_insert(&addr);
} else {
peer_db_write.set_try_connect_test_success_or_insert(&addr);
}
}
if let Err(e) = socket.shutdown(std::net::Shutdown::Both) {
tracing::error!("Failed to shutdown socket for {} : {}", addr, e);
}
res
};
let result = exec_handshake();
if result.is_ok() {
massa_metrics.inc_protocol_tester_success();
} else {
massa_metrics.inc_protocol_tester_failed();
}
result
}
/// Create a new tester (spawn a thread)
#[allow(clippy::too_many_arguments)]
pub fn new(
peer_db: SharedPeerDB,
active_connections: Box<dyn ActiveConnectionsTrait>,
protocol_config: ProtocolConfig,
receiver: MassaReceiver<(PeerId, HashMap<SocketAddr, TransportType>)>,
messages_handler: MessagesHandler,
target_out_connections: HashMap<String, (Vec<IpAddr>, usize)>,
default_target_out_connections: usize,
massa_metrics: MassaMetrics,
) -> Self {
let handle = std::thread::Builder::new()
.name(THREAD_NAME.to_string())
.spawn(move || {
let db = peer_db;
let active_connections = active_connections.clone();
let announcement_deser = AnnouncementDeserializer::new(
AnnouncementDeserializerArgs {
max_listeners: protocol_config.max_size_listeners_per_peer,
},
);
//let mut network_manager = PeerNetManager::new(config);
let protocol_config = protocol_config.clone();
'main_loop: loop {
crossbeam::select! {
recv(receiver) -> res => {
receiver.update_metrics();
match res {
Ok(listener) => {
if listener.1.is_empty() {
continue;
}
//Test
let peers_connected = active_connections.get_peers_connected();
let slots_out_connections: HashMap<String, (Vec<IpAddr>, usize)> = target_out_connections
.iter()
.map(|(key, value)| {
let mut value = value.clone();
value.1 = value.1.saturating_sub(peers_connected.iter().filter(|(_, (_, ty, category))| {
if ty == &PeerConnectionType::IN {
return false;
}
if let Some(category) = category {
category == key
} else {
false
}
}).count());
(key.clone(), value)
})
.collect();
let slot_default_category = default_target_out_connections.saturating_sub(peers_connected.iter().filter(|(_, (_, ty, category))| {
if ty == &PeerConnectionType::IN {
return false;
}
if category.is_some() {
return false;
}
true
}).count());
{
let now = MassaTime::now();
let db = db.clone();
// receive new listener to test
for (addr, _) in listener.1.iter() {
if !db.write().insert_peer_in_test(addr) {
// if the peer is already in test, we skip it
continue;
}
//Find category of that address
let ip_canonical = to_canonical(addr.ip());
let cooldown = 'cooldown: {
for category in &slots_out_connections {
if category.1.0.contains(&ip_canonical) {
if category.1.1 == 0 {
break 'cooldown Duration::from_secs(60 * 60 * 2);
} else {
break 'cooldown Duration::from_secs(30);
}
}
}
if slot_default_category == 0 {
Duration::from_secs(60 * 60 * 2)
} else {
Duration::from_secs(30)
}
};
//TODO: Change it to manage multiple listeners SAFETY: Check above
{
let mut db_write = db.write();
if let Some(last_tested_time) = db_write.get_tested_addresses().get(addr) {
let last_tested_time = last_tested_time.estimate_instant().expect("Time went backward");
if last_tested_time.elapsed() < cooldown {
db_write.remove_peer_in_test(addr);
continue;
}
}
db_write.insert_tested_address(addr, now);
}
// TODO: Don't launch test if peer is already connected to us as a normal connection.
// Maybe we need to have a way to still update his last announce timestamp because he is a great peer
if !active_connections.get_peers_connected().iter().any(|(_, (addr, _, _))| to_canonical(addr.ip()) == ip_canonical) {
//Don't test our local addresses
if protocol_config.listeners.iter().any(|(local_addr, _transport)| addr == local_addr) {
db.write().remove_peer_in_test(addr);
continue 'main_loop;
}
//Don't test our proper ip
if let Some(ip) = protocol_config.routable_ip {
if to_canonical(ip) == ip_canonical {
db.write().remove_peer_in_test(addr);
continue 'main_loop;
}
}
debug!("testing peer {} listener addr: {}", &listener.0, &addr);
let res = Tester::tcp_handshake(
messages_handler.clone(),
db.clone(),
announcement_deser.clone(),
VersionDeserializer::new(),
PeerIdDeserializer::new(),
*addr,
&protocol_config,
massa_metrics.clone(),
);
db.write().remove_peer_in_test(addr);
// let _res = network_manager.try_connect(
// *addr,
// protocol_config.timeout_connection.to_duration(),
// &OutConnectionConfig::Tcp(Box::new(TcpOutConnectionConfig::new(protocol_config.read_write_limit_bytes_per_second / 10, Duration::from_millis(100)))),
// );
tracing::debug!("{:?}", res);
}
};
}
},
Err(_e) => break,
}
}
default(Duration::from_secs(2)) => {
// If no message in 2 seconds they will test a peer that hasn't been tested for long time
let listener = {
let mut db_write = db.write();
if let Some(listener) = db_write.get_oldest_peer(
protocol_config.test_oldest_peer_cooldown.into(),
db_write.get_peers_in_test(),
) {
db_write.insert_peer_in_test(&listener);
db_write.insert_tested_address(&listener, MassaTime::now());
listener
} else {
continue;
}
};
// we try to connect to all peer listener (For now we have only one listener)
let ip_canonical = to_canonical(listener.ip());
if active_connections.get_peers_connected().iter().any(|(_, (addr, _, _))| to_canonical(addr.ip()) == ip_canonical) {
db.write().remove_peer_in_test(&listener);
continue;
}
//Don't test our local addresses
for (local_addr, _transport) in protocol_config.listeners.iter() {
if listener == *local_addr {
db.write().remove_peer_in_test(&listener);
continue;
}
}
//Don't test our proper ip
if let Some(ip) = protocol_config.routable_ip {
if to_canonical(ip) == ip_canonical {
db.write().remove_peer_in_test(&listener);
continue;
}
}
debug!("testing listener addr: {}", &listener);
let _ = Tester::tcp_handshake(
messages_handler.clone(),
db.clone(),
announcement_deser.clone(),
VersionDeserializer::new(),
PeerIdDeserializer::new(),
listener,
&protocol_config,
massa_metrics.clone(),
);
// let res = network_manager.try_connect(
// listener,
// protocol_config.timeout_connection.to_duration(),
// &OutConnectionConfig::Tcp(Box::new(TcpOutConnectionConfig::new(protocol_config.read_write_limit_bytes_per_second / 10, Duration::from_millis(100)))),
// );
db.write().remove_peer_in_test(&listener);
// debug!("{:?}", res);
}
}
}
}).expect("OS failed to start peer tester thread");
Self {
handler: Some(handle),
}
}
}