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use super::{
Arc, Client, ClientContext, ClientOperation, ConnectionType, DownloadPeer,
DownloadStatus, Listen, Peer, PeerRegistry, Receiver, Result, RwLock,
RwLockExt, Sender, ServerActor, ServerMessage, Shares, SoulseekRs,
TcpStream, error, info, mpsc, thread, trace,
};
/// Ceiling on the wait for a login verdict. Generous enough for a slow server
/// and a retrying connect, short enough that an unattended caller ends.
const LOGIN_RESPONSE_TIMEOUT: std::time::Duration =
std::time::Duration::from_secs(45);
impl Client {
pub fn connect(&mut self) -> Result<()> {
let (sender, message_reader): (
Sender<ClientOperation>,
Receiver<ClientOperation>,
) = mpsc::channel();
let mut ctx = self.context.write_safe()?;
let peer_registry = PeerRegistry::new(
ctx.actor_system.clone(),
sender.clone(),
self.username.clone(),
);
ctx.peer_registry = Some(peer_registry);
let listen_sender = sender.clone();
// Scan the shared directories once into the read-only index, and
// report the real folder/file counts to the server on login.
let roots: Vec<std::path::PathBuf> = self
.shared_directories
.iter()
.filter(|dir| !dir.trim().is_empty())
.map(std::path::PathBuf::from)
.collect();
let shares = if roots.is_empty() {
Arc::new(Shares::empty())
} else {
let scanned = Shares::scan_many(&roots);
info!(
"Sharing {} files in {} folders from {} directories",
scanned.file_count(),
scanned.folder_count(),
roots.len()
);
Arc::new(scanned)
};
let shared_folder_count = shares.folder_count();
let shared_file_count = shares.file_count();
ctx.shares = shares;
ctx.shared_directories.clone_from(&self.shared_directories);
// Bind before logging in: the port we advertise has to be the port we
// hold, and a bind that fails outright is the caller's to see rather
// than a panic on a thread nobody is watching.
let listener = if self.enable_listen {
let listener = Listen::bind(self.listen_port)?;
self.bound_port = Some(listener.local_addr()?.port());
Some(listener)
} else {
None
};
let mut server_actor = ServerActor::new(
self.address.clone(),
sender,
self.bound_port.unwrap_or(self.listen_port),
self.enable_listen,
shared_folder_count,
shared_file_count,
);
server_actor.set_session_watch(self.session.clone());
self.server_handle = Some(ctx.actor_system.spawn_with_handle(
server_actor,
|actor, handle| {
actor.set_self_handle(handle);
},
));
if let Some(listener) = listener {
let client_sender = listen_sender;
let context = self.context.clone();
let own_username = self.username.clone();
thread::spawn(move || {
Listen::serve(&listener, client_sender, context, own_username);
});
}
Self::listen_to_client_operations(
message_reader,
self.context.clone(),
self.username.clone(),
);
Ok(())
}
/// Log in and wait for the server's verdict.
///
/// The wait is bounded: the actor only answers once it has a working
/// connection, so a server that never completes the TCP handshake would
/// otherwise block the caller forever. A caller that hits
/// [`SoulseekRs::Timeout`] can retry or give up, but it always regains
/// control.
pub fn login(&self) -> Result<bool> {
info!("Logging in as {}", self.username);
if let Some(handle) = &self.server_handle {
let (tx, rx) = std::sync::mpsc::channel();
let _ = handle.send(ServerMessage::Login {
username: self.username.clone(),
password: self.password.clone(),
version: self.version,
response: tx,
});
match rx.recv_timeout(LOGIN_RESPONSE_TIMEOUT) {
Ok(result) => result,
Err(_) => Err(SoulseekRs::Timeout),
}
} else {
Err(SoulseekRs::NotConnected)
}
}
/// Ask the server for a peer's address and open a direct control
/// connection to it. Downloads queued for that peer are sent automatically
/// once the connection is established.
///
/// # Errors
/// Returns [`SoulseekRs::NotConnected`] if the client is not connected.
pub fn connect_peer(&self, username: &str) -> Result<()> {
let handle = self
.server_handle
.as_ref()
.ok_or(SoulseekRs::NotConnected)?;
handle
.send(ServerMessage::GetPeerAddress(username.to_string()))
.map_err(|_| SoulseekRs::NotConnected)?;
Ok(())
}
#[allow(dead_code)]
pub fn remove_peer(&self, username: &str) {
let context = match self.context.read_safe() {
Ok(c) => c,
Err(e) => {
error!("[client] remove_peer: {}", e);
return;
}
};
if let Some(ref registry) = context.peer_registry
&& let Some(handle) = registry.remove_peer(username)
{
let _ = handle.stop();
}
}
pub(crate) fn connect_to_peer(
peer: Peer,
client_context: Arc<RwLock<ClientContext>>,
own_username: String,
stream: Option<TcpStream>,
) {
let peer_clone = peer.clone();
trace!(
"[client] connecting to {}, with connection_type: {}, and token {:?}",
peer.username, peer.connection_type, peer.token
);
match peer.connection_type {
ConnectionType::P => {
let username = peer.username;
let context = match client_context.read_safe() {
Ok(c) => c,
Err(e) => {
error!("[client] connect_to_peer read: {}", e);
return;
}
};
if let Some(ref registry) = context.peer_registry {
match registry.register_peer(peer_clone, stream, None) {
Ok(_) => (),
Err(e) => {
trace!(
"Failed to spawn peer actor for {:?}: {:?}",
username, e
);
}
}
} else {
trace!("PeerRegistry not initialized");
}
}
ConnectionType::F => {
trace!(
"[client] downloading from: {}, {:?}",
peer.username, peer.token
);
let Some(token) = peer.token else {
error!(
"[client] F connection from {} without token",
peer.username
);
return;
};
let download_peer = DownloadPeer::new(
peer.username,
peer.host,
peer.port,
token,
false,
own_username,
);
match download_peer.download_file(
client_context.clone(),
None,
None,
) {
Ok((download, filename)) => {
trace!(
"[client] downloaded {} bytes {:?} ",
filename, download.size
);
let _ = download.sender.send(DownloadStatus::Completed);
match client_context.write_safe() {
Ok(mut ctx) => ctx.update_download_with_status(
download.token,
DownloadStatus::Completed,
),
Err(e) => error!(
"[client] connect_to_peer F write: {}",
e
),
}
}
Err(e) => {
trace!("[client] failed to download: {}", e);
}
}
}
ConnectionType::D => {
error!("ConnectionType::D not implemented");
}
}
}
}