iota/src/omikron/omikron_connection.rs
2026-02-01 16:32:30 +01:00

886 lines
38 KiB
Rust

use crate::auth::local_auth;
use crate::gui::log_panel::{log_cv, log_message_format};
use crate::users::contact::Contact;
use crate::users::user_community_util::UserCommunityUtil;
use crate::util::chat_files::MessageState;
use crate::util::chats_util::{get_user, mod_user};
use crate::util::crypto_util::{DataFormat, SecurePayload};
use crate::util::file_util::{get_children, load_file, save_file};
use crate::util::{chat_files, chats_util};
use crate::{ACTIVE_TASKS, SHUTDOWN};
use crate::{
data::communication::{CommunicationType, CommunicationValue, DataTypes},
gui::log_panel::{log_message, log_message_trans},
util::{config_util::CONFIG, crypto_helper},
};
use dashmap::DashMap;
use futures::stream::{SplitSink, SplitStream};
use futures::{FutureExt, Stream};
use futures_util::sink::Sink;
use futures_util::{SinkExt, StreamExt};
use hyper::upgrade::Upgraded;
use hyper_util::rt::TokioIo;
use json::JsonValue;
use json::number::Number;
use pkcs8::DecodePrivateKey;
use std::collections::HashMap;
use std::sync::{Arc, LazyLock};
use std::time::{SystemTime, UNIX_EPOCH};
use tokio::sync::{Mutex, RwLock, mpsc};
use tokio::time::{Duration, Instant, sleep};
use tokio_tungstenite::{connect_async, tungstenite::protocol::Message};
use tungstenite::Utf8Bytes;
use uuid::Uuid;
use warp::reply::Json;
pub static OMIKRON_CONNECTION: LazyLock<Arc<RwLock<Option<Arc<OmikronConnection>>>>> =
LazyLock::new(|| Arc::new(RwLock::new(None)));
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ConnectionVariant {
Omikron,
ClientUnauthenticated,
ClientAuthenticated,
}
#[derive(Clone)]
pub struct OmikronConnection {
pub variant: Arc<RwLock<ConnectionVariant>>,
pub user_id: Arc<RwLock<i64>>,
pub(crate) writer:
Arc<Mutex<Option<Box<dyn Sink<Message, Error = tungstenite::Error> + Send + Unpin>>>>,
waiting: Arc<DashMap<Uuid, Box<dyn Fn(CommunicationValue) + Send + Sync>>>,
pingpong: Arc<Mutex<Option<tokio::task::JoinHandle<()>>>>,
pub last_ping: Arc<Mutex<i64>>,
pub message_send_times: Arc<Mutex<HashMap<Uuid, Instant>>>,
pub is_connected: Arc<Mutex<bool>>,
}
impl OmikronConnection {
pub fn new() -> Self {
Self {
variant: Arc::new(RwLock::new(ConnectionVariant::Omikron)),
user_id: Arc::new(RwLock::new(0)),
writer: Arc::new(Mutex::new(None)),
waiting: Arc::new(DashMap::new()),
pingpong: Arc::new(Mutex::new(None)),
last_ping: Arc::new(Mutex::new(-1)),
message_send_times: Arc::new(Mutex::new(HashMap::new())),
is_connected: Arc::new(Mutex::new(false)),
}
}
pub async fn client(
writer: SplitSink<tokio_tungstenite::WebSocketStream<TokioIo<Upgraded>>, Message>,
reader: SplitStream<tokio_tungstenite::WebSocketStream<TokioIo<Upgraded>>>,
) -> Arc<Self> {
let connection = Arc::new(Self {
variant: Arc::new(RwLock::new(ConnectionVariant::ClientUnauthenticated)),
user_id: Arc::new(RwLock::new(0)),
writer: Arc::new(Mutex::new(Some(Box::new(writer)
as Box<dyn Sink<Message, Error = tungstenite::Error> + Send + Unpin>))),
waiting: Arc::new(DashMap::new()),
pingpong: Arc::new(Mutex::new(None)),
last_ping: Arc::new(Mutex::new(-1)),
message_send_times: Arc::new(Mutex::new(HashMap::new())),
is_connected: Arc::new(Mutex::new(true)),
});
let boxed_reader: Box<
dyn Stream<Item = Result<Message, tungstenite::Error>> + Send + Unpin,
> = Box::new(reader);
connection.spawn_listener(boxed_reader).await;
connection
}
pub async fn is_connected(&self) -> bool {
*self.is_connected.lock().await
}
/// Connect loop with retry
pub async fn connect(self: &Arc<Self>, user_ids: String) {
if self.is_connected().await {
return;
}
let conf = CONFIG.read().await;
let iota_id = conf.get_iota_id();
let public_key = conf.get_public_key();
let private_key = conf.get_private_key();
drop(conf); // release read lock
if iota_id == 0 || public_key.is_none() || private_key.is_none() {
// Registration flow
log_message_trans("iota_register_new");
let key_pair = crypto_helper::generate_keypair();
let public_key_base64 = crypto_helper::public_key_to_base64(&key_pair.public);
let private_key_base64 = crypto_helper::secret_key_to_base64(&key_pair.secret);
let mut conf_write = CONFIG.write().await;
conf_write.change("public_key", JsonValue::String(public_key_base64.clone()));
conf_write.change("private_key", JsonValue::String(private_key_base64));
conf_write.update();
drop(conf_write);
if self.connect_internal().await {
// a new helper function to just connect
match self
.clone()
.await_response(
&CommunicationValue::new(CommunicationType::register_iota)
.add_data(DataTypes::public_key, JsonValue::String(public_key_base64)),
Some(Duration::from_secs(20)),
)
.await
{
Ok(response_cv) => {
let iota_json = response_cv
.get_data(DataTypes::register_id)
.unwrap_or(&JsonValue::Null);
let iota_id = iota_json.as_i64().unwrap_or(0);
let mut conf_write = CONFIG.write().await;
conf_write.change("iota_id", iota_json.clone());
conf_write.update();
drop(conf_write);
log_message(format!("Registered with Iota-ID: {}", iota_id));
}
Err(timeout) => {
log_message(timeout);
}
}
}
} else {
// Login flow
if self.connect_internal().await {
self.send_message(
&CommunicationValue::new(CommunicationType::identification).add_data(
DataTypes::iota_id,
JsonValue::Number(json::number::Number::from(iota_id)),
),
)
.await;
}
}
}
async fn connect_internal(self: &Arc<Self>) -> bool {
if self.is_connected().await {
return true;
}
log_message_trans("omikron_connecting");
// connect to omikron
let conf = CONFIG.read().await;
let addr = conf
.get("omikron_addr")
.as_str()
.unwrap_or("wss://app.tensamin.net/ws/iota/");
let stream_res = connect_async(addr).await;
if let Err(e) = stream_res {
log_message(format!("con error {}", e.to_string()));
return false;
}
let (stream, _) = stream_res.unwrap();
log_message_trans("omikron_connection_success");
let (write_half, read_half) = stream.split();
*self.writer.lock().await = Some(Box::new(write_half));
let boxed_reader: Box<
dyn Stream<Item = Result<Message, tungstenite::Error>> + Send + Unpin,
> = Box::new(read_half);
self.spawn_listener(boxed_reader).await;
let mut is_connected = self.is_connected.lock().await;
*is_connected = true;
drop(is_connected);
let sel_arc_clone = self.clone();
tokio::spawn(async move {
loop {
if !sel_arc_clone.is_connected().await {
break;
}
sel_arc_clone.send_ping().await;
sleep(Duration::from_secs(10)).await;
}
});
true
}
pub async fn send_message(&self, cv: &CommunicationValue) {
Self::send_message_static(
&self.writer,
Arc::clone(&self.is_connected),
cv.to_json().to_string(),
)
.await;
}
pub async fn set_variant(self: &Arc<Self>, variant: ConnectionVariant) {
*self.variant.write().await = variant;
}
pub async fn set_user_id(self: &Arc<Self>, user_id: i64) {
*self.user_id.write().await = user_id;
}
/// Listener for all incoming messages
async fn spawn_listener(
self: &Arc<Self>,
mut read_half: Box<dyn Stream<Item = Result<Message, tungstenite::Error>> + Send + Unpin>,
) {
let waiting_out = self.waiting.clone();
let writer_out = self.writer.clone();
let is_connected_out = self.is_connected.clone();
let sel_out = self.clone();
let variant = self.variant.clone();
{
ACTIVE_TASKS.lock().unwrap().push("Listener".to_string());
}
tokio::spawn(async move {
while let Some(msg) = read_half.next().await {
if *SHUTDOWN.read().await {
break;
}
sel_out.clone().handle_message(
msg,
waiting_out.clone(),
writer_out.clone(),
is_connected_out.clone(),
variant.clone(),
);
}
*is_connected_out.lock().await = false;
log_message("Connection closed.");
});
{
ACTIVE_TASKS
.lock()
.unwrap()
.retain(|t| !t.eq(&"Listener".to_string()));
}
}
pub fn handle_message(
self: Arc<Self>,
msg: Result<Message, tungstenite::Error>,
waiting: Arc<DashMap<Uuid, Box<dyn Fn(CommunicationValue) + Send + Sync + 'static>>>,
writer: Arc<
Mutex<
Option<Box<dyn Sink<Message, Error = tungstenite::Error> + Send + Unpin + 'static>>,
>,
>,
is_connected: Arc<Mutex<bool>>,
variant: Arc<RwLock<ConnectionVariant>>,
) {
tokio::spawn(async move {
match msg {
Ok(Message::Close(Some(frame))) => {
log_message(format!("[Omikron] Closed: {:?}", frame));
*is_connected.lock().await = false;
return;
}
Ok(Message::Text(text)) => {
let cv = CommunicationValue::from_json(&text);
if cv.is_type(CommunicationType::pong) {
self.handle_pong(&cv, true).await;
return;
}
if cv.is_type(CommunicationType::challenge) {
let conf = CONFIG.read().await;
let private_key = conf.get_private_key().unwrap();
drop(conf);
let omikron_public_key = cv
.get_data(DataTypes::public_key)
.unwrap()
.as_str()
.unwrap();
let encrypted_challenge =
cv.get_data(DataTypes::challenge).unwrap().as_str().unwrap();
let solved_challenge = {
if let Ok(decrypted) = SecurePayload::new(
encrypted_challenge,
DataFormat::Base64,
crypto_helper::load_secret_key(&private_key).unwrap(),
) {
if let Ok(decrypted) = decrypted.decrypt_x448(
crypto_helper::load_public_key(omikron_public_key).unwrap(),
) {
Some(decrypted)
} else {
None
}
} else {
None
}
};
if let Some(decrypted) = solved_challenge {
let response =
CommunicationValue::new(CommunicationType::challenge_response)
.with_id(cv.get_id())
.add_data(
DataTypes::challenge,
JsonValue::String(decrypted.export(DataFormat::Base64)),
);
self.send_message(&response).await;
} else {
log_message("Failed to decrypt challenge");
}
return;
}
if cv.is_type(CommunicationType::success) {
let iota_id = cv
.get_data(DataTypes::iota_id)
.unwrap_or(&JsonValue::Null)
.as_i64()
.unwrap_or(0);
if iota_id != 0 {
let mut conf = CONFIG.write().await;
conf.change("iota_id", JsonValue::Number(iota_id.into()));
conf.update();
log_message(format!("Iota registered with ID: {}", iota_id));
// Now, proceed to login
let login_message =
CommunicationValue::new(CommunicationType::identification)
.add_data(
DataTypes::iota_id,
JsonValue::Number(json::number::Number::from(iota_id)),
);
let self_clone = self.clone();
tokio::spawn(async move {
self_clone.send_message(&login_message).await;
});
} else {
log_message("Iota registration failed.");
}
return;
}
if cv.is_type(CommunicationType::identification_response) {
if let Some(accepted) = cv.get_data(DataTypes::accepted) {
log_message(format!("Omikron connected: {}", accepted.to_string()));
}
return;
}
let com = variant.read().await.clone();
if com == ConnectionVariant::ClientUnauthenticated {
if cv.is_type(CommunicationType::identification) {
// Extract user ID
let user_id: i64 = cv
.get_data(DataTypes::user_id)
.unwrap_or(&JsonValue::Null)
.as_i64()
.unwrap_or(0);
if user_id == 0 {
self.send_message(
&CommunicationValue::new(
CommunicationType::error_invalid_user_id,
)
.with_id(cv.get_id()),
)
.await;
return;
}
// Validate private key
if let Some(private_key_hash) = cv.get_data(DataTypes::private_key_hash)
{
log_message(format!("private_key_hash: {}", private_key_hash));
let is_valid = local_auth::is_private_key_valid(
&user_id,
&private_key_hash.to_string(),
);
if !is_valid {
log_message("Invalid private key");
self.send_message(
&CommunicationValue::new(
CommunicationType::error_invalid_private_key,
)
.with_id(cv.get_id()),
)
.await;
return;
}
} else {
log_message("Missing private key");
self.send_message(
&CommunicationValue::new(
CommunicationType::error_invalid_private_key,
)
.with_id(cv.get_id()),
)
.await;
return;
}
// Set identification data
self.set_user_id(user_id).await;
self.set_variant(ConnectionVariant::ClientAuthenticated)
.await;
let response =
CommunicationValue::new(CommunicationType::identification_response)
.with_id(cv.get_id());
self.send_message(&response).await;
}
}
// ************************************************ //
// Direct messages //
// ************************************************ //
log_cv(&cv);
if let Some((_, y)) = waiting.remove(&cv.get_id()) {
y(cv);
return;
}
if cv.is_type(CommunicationType::message_state) {
let sender_id = &cv.get_sender();
let receiver_id = &cv.get_receiver();
chat_files::change_message_state(
cv.get_data(DataTypes::send_time)
.unwrap_or(&JsonValue::new_object())
.as_i64()
.unwrap_or(0) as i64,
*receiver_id,
*sender_id,
MessageState::from_str(
cv.get_data(DataTypes::message_state)
.unwrap_or(&JsonValue::Null)
.as_str()
.unwrap_or(""),
),
);
}
if cv.is_type(CommunicationType::message_other_iota) {
let sender_id = &cv.get_sender();
let receiver_id = &cv.get_receiver();
chat_files::add_message(
cv.get_data(DataTypes::send_time)
.unwrap_or(&JsonValue::new_object())
.as_i64()
.unwrap_or(
SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_millis() as i64,
) as u128,
false,
*receiver_id,
*sender_id,
cv.get_data(DataTypes::content).unwrap().as_str().unwrap(),
);
let user_forward = CommunicationValue::new(CommunicationType::message_live)
.with_id(cv.get_id())
.with_receiver(*receiver_id)
.add_data(
DataTypes::send_time,
cv.get_data(DataTypes::send_time).unwrap().clone(),
)
.add_data(
DataTypes::message,
cv.get_data(DataTypes::content).unwrap().clone(),
)
.add_data(
DataTypes::sender_id,
JsonValue::Number(Number::from(cv.get_sender())),
);
let user_resp = self
.clone()
.await_response(&user_forward, Some(Duration::from_secs(10)))
.await;
if let Ok(user_resp) = user_resp {
let ms: MessageState = MessageState::from_str(
user_resp
.get_data(DataTypes::message_state)
.unwrap_or(&JsonValue::Null)
.as_str()
.unwrap_or(""),
)
.upgrade(MessageState::Send);
self.send_message(
&CommunicationValue::new(CommunicationType::message_state)
.with_id(cv.get_id())
.with_receiver(*sender_id)
.with_sender(*receiver_id)
.add_data(
DataTypes::send_time,
cv.get_data(DataTypes::send_time).unwrap().clone(),
)
.add_data(
DataTypes::message_state,
JsonValue::from(ms.as_str()),
),
);
} else {
self.send_message(
&CommunicationValue::new(CommunicationType::message_state)
.with_id(cv.get_id())
.with_receiver(*sender_id)
.with_sender(*receiver_id)
.add_data(
DataTypes::send_time,
cv.get_data(DataTypes::send_time).unwrap().clone(),
)
.add_data(
DataTypes::message_state,
JsonValue::from(MessageState::Send.as_str()),
),
);
}
return;
}
if cv.is_type(CommunicationType::message_send) {
let my_id = cv.get_sender();
let other_id = cv
.get_data(DataTypes::receiver_id)
.unwrap_or(&JsonValue::Null)
.as_i64()
.unwrap_or(0);
let now_ms = SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_millis() as u128;
chat_files::add_message(
now_ms,
true,
my_id,
other_id,
&*cv.get_data(DataTypes::content).unwrap().to_string(),
);
let ack = CommunicationValue::new(CommunicationType::success)
.with_id(cv.get_id())
.with_receiver(my_id);
Self::send_message_static(
&writer.clone(),
Arc::clone(&is_connected),
ack.to_json().to_string(),
)
.await;
let forward =
CommunicationValue::new(CommunicationType::message_other_iota)
.with_id(cv.get_id())
.with_receiver(other_id)
.add_data(
DataTypes::receiver_id,
JsonValue::Number(Number::from(other_id)),
)
.with_sender(my_id)
.add_data(
DataTypes::send_time,
JsonValue::String(now_ms.to_string()),
)
.add_data(
DataTypes::sender_id,
JsonValue::Number(Number::from(my_id)),
)
.add_data(
DataTypes::content,
JsonValue::String(
cv.get_data(DataTypes::content).unwrap().to_string(),
),
);
Self::send_message_static(
&writer.clone(),
is_connected,
forward.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::messages_get) {
let my_id = cv.get_sender();
let partner_id = cv
.get_data(DataTypes::user_id)
.unwrap_or(&JsonValue::Null)
.as_i64()
.unwrap_or(0);
let offset = cv
.get_data(DataTypes::offset)
.unwrap_or(&JsonValue::Null)
.to_string()
.parse::<i64>()
.unwrap_or(0);
let amount = cv
.get_data(DataTypes::amount)
.unwrap_or(&JsonValue::Null)
.to_string()
.parse::<i64>()
.unwrap_or(0);
let messages = chat_files::get_messages(my_id, partner_id, offset, amount);
let resp = CommunicationValue::new(CommunicationType::messages_get)
.with_id(cv.get_id())
.with_receiver(my_id)
.add_data(DataTypes::messages, messages);
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::get_chats) {
let user_id = cv.get_sender();
let users = chats_util::get_users(user_id);
let resp = CommunicationValue::new(CommunicationType::get_chats)
.with_id(cv.get_id())
.with_receiver(user_id)
.add_data(DataTypes::user_ids, users);
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::add_conversation) {
let user_id = cv.get_sender();
let other_id = cv
.get_data(DataTypes::chat_partner_id)
.unwrap_or(&JsonValue::Null)
.as_i64()
.unwrap_or(0);
let mut contact =
get_user(user_id, other_id).unwrap_or(Contact::new(other_id));
contact.set_last_message_at(
SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_millis() as i64,
);
mod_user(user_id, &contact);
let resp = CommunicationValue::new(CommunicationType::add_conversation)
.with_id(cv.get_id())
.with_receiver(user_id);
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::add_community) {
UserCommunityUtil::add_community(
cv.get_sender(),
cv.get_data(DataTypes::community_address)
.unwrap()
.to_string(),
cv.get_data(DataTypes::community_title).unwrap().to_string(),
cv.get_data(DataTypes::position).unwrap().to_string(),
);
let resp = CommunicationValue::new(CommunicationType::add_community)
.with_id(cv.get_id())
.with_receiver(cv.get_sender());
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::get_communities) {
let resp = CommunicationValue::new(CommunicationType::get_communities)
.with_id(cv.get_id())
.with_receiver(cv.get_sender())
.add_array(
DataTypes::communities,
UserCommunityUtil::get_communities(cv.get_sender()),
);
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::remove_community) {
UserCommunityUtil::remove_community(
cv.get_sender(),
cv.get_data(DataTypes::community_address)
.unwrap()
.to_string(),
); // needs UserCommunityUtil
let resp = CommunicationValue::new(CommunicationType::remove_community)
.with_id(cv.get_id())
.with_receiver(cv.get_sender());
Self::send_message_static(
&writer.clone(),
is_connected,
resp.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::settings_save) {
let my_id = cv.get_sender();
let settings_name =
cv.get_data(DataTypes::settings_name).unwrap().to_string();
let settings_value = cv.get_data(DataTypes::payload).unwrap().to_string();
save_file(
&format!("users/{}/settings/", my_id),
&format!("{}.settings", settings_name),
&settings_value,
);
let response = CommunicationValue::new(CommunicationType::settings_save)
.with_receiver(my_id)
.with_id(cv.get_id());
Self::send_message_static(
&writer.clone(),
is_connected,
response.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::settings_load) {
let my_id = cv.get_sender();
let settings_name =
cv.get_data(DataTypes::settings_name).unwrap().to_string();
let settings_value_str = load_file(
&format!("users/{}/settings/", my_id),
&format!("{}.settings", settings_name),
);
let settings_value_json = JsonValue::from(settings_value_str);
let response = CommunicationValue::new(CommunicationType::settings_load)
.with_id(cv.get_id())
.with_receiver(my_id)
.add_data(DataTypes::payload, settings_value_json)
.add_data_str(DataTypes::settings_name, settings_name);
Self::send_message_static(
&writer.clone(),
is_connected,
response.to_json().to_string(),
)
.await;
return;
}
if cv.is_type(CommunicationType::settings_list) {
let my_id = cv.get_sender();
let settings = get_children(&format!("users/{}/settings/", my_id));
let mut settings_json = JsonValue::new_array();
for s in settings {
let s = s.replace(".settings", "");
if s.is_empty() {
continue;
}
let _ = settings_json.push(JsonValue::String(s));
}
let response = CommunicationValue::new(CommunicationType::settings_list)
.with_id(cv.get_id())
.with_receiver(my_id)
.add_data(DataTypes::settings, settings_json);
Self::send_message_static(
&writer.clone(),
is_connected,
response.to_json().to_string(),
)
.await;
return;
}
}
Err(e) => {
log_message(format!("[Omikron] Error: {}", e));
*is_connected.lock().await = false;
return;
}
_ => {}
}
});
}
pub async fn send_message_static(
writer: &Arc<
Mutex<Option<Box<dyn Sink<Message, Error = tungstenite::Error> + Send + Unpin>>>,
>,
connected: Arc<Mutex<bool>>,
msg: String,
) {
let mut guard = writer.lock().await;
if let Some(writer) = guard.as_mut() {
match writer.send(Message::Text(Utf8Bytes::from(msg))).await {
Ok(_) => match writer.flush().await {
Ok(_) => return,
Err(e) => {
log_message_format("send_message_failed", &[&e.to_string()]);
*connected.lock().await = false;
}
},
Err(e) => {
log_message_format("send_message_failed", &[&e.to_string()]);
*connected.lock().await = false;
}
}
} else {
log_message_format("send_message_failed", &["Immutable Writer"]);
*connected.lock().await = false;
}
}
pub async fn await_response(
self: Arc<Self>,
cv: &CommunicationValue,
timeout_duration: Option<Duration>,
) -> Result<CommunicationValue, String> {
let (tx, mut rx) = mpsc::channel(1);
let msg_id = cv.get_id();
let task_tx = tx.clone();
self.waiting.insert(
msg_id,
Box::new(move |response_cv| {
let inner_tx = task_tx.clone();
tokio::spawn(async move {
if let Err(e) = inner_tx.send(response_cv).await {
log_message(format!("Failed to send response back to awaiter: {}", &e));
}
});
}),
);
self.send_message(&cv).await;
let timeout = timeout_duration.unwrap_or(Duration::from_secs(10));
match tokio::time::timeout(timeout, rx.recv()).await {
Ok(Some(response_cv)) => Ok(response_cv),
Ok(_) => Err("Failed to receive response, channel was closed.".to_string()),
Err(_) => {
self.waiting.remove(&msg_id);
Err(format!(
"Request timed out after {} seconds.",
timeout.as_secs()
))
}
}
}
}