成功解决CmdUpdateOnlineUsers的问题+尚未发现验证错误，等待后续验证

src/client.rs

@@ -4,7 +4,7 @@ use crate::handles::close_connection::handle_connection_error;
 use crate::handles::handle_messages::handle_other_message;
 use crate::handles::handshake::handle_handshake;
 use crate::handles::heartbeat::{handle_heartbeat, heart_resp};
-use crate::handles::online_users_update::{send_online_users_resp, OnlineUserMessage, ServerOnlineUserMessage};
+use crate::handles::online_users_update::{send_online_users_resp, ServerOnlineUserMessage};
 use crate::handles::redis::{insert_this_connection, remove_this_connection};
 use crate::utils::json_utils::{get_current_timestamp, parse_message};
 use futures::{SinkExt, StreamExt};
@@ -15,7 +15,6 @@ use std::time::{Duration, Instant};
 use tokio::sync::mpsc::{Receiver, Sender, UnboundedSender};
 use tokio::sync::RwLock as AsyncRwLock;
 use tokio::time;
-use tokio::time::interval;
 use tokio_tungstenite::accept_hdr_async;
 use tungstenite::handshake::server::{Request, Response};
 use tungstenite::{Error, Message};
@@ -256,8 +255,9 @@ async fn send_online_users_and_send(
         from_id: "0".to_string(),
         to_id: from_id.to_string(),
         msg_data: messages,
-        time: get_current_timestamp()
-    }).map_err(|e| Error::Io(std::io::Error::new(std::io::ErrorKind::Other, e)))?;
+        time: get_current_timestamp(),
+    })
+    .map_err(|e| Error::Io(std::io::Error::new(std::io::ErrorKind::Other, e)))?;
     if let Err(e) = sender.send(Message::text(json_message)).await {
         println!("发送在线用户列表消息给用户 {} 失败: {}", from_id, e);
         return Err(e);